Air purification device

Abstract

The utility model discloses an air purification equipment relates to air purification technical field, wherein, air purification equipment includes equipment main part, grating and top cap. Equipment main part top is equipped with air outlet and the purification air duct that links first air inlet with air outlet. Grating is located at air outlet, and it includes the annular flow guide plate that extends peripherally, and the annular flow guide plate extends from below to outside upwards. The bottom of top cap is installed in equipment main part top, and its side portion is equipped with the first annular flow guide surface that extends from below to outside upwards. The annular flow guide plate and the first annular flow guide surface form the annular air outlet flow channel that links the purification air duct between, and the airflow is shot to the outside upper direction with 15 to 30 degrees angle of separation with horizontal direction through the flow channel. The air outlet angle prolongs airflow induction distance, avoids landing short circuit or top accumulation, thereby forms the stable and larger range lower vortex suction area under the air purification equipment, promotes the floating hair trapping ability, reduces the floating hair and is blown apart or jumps the phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of air purification technology, and in particular to an air purification device. Background Technology

[0002] Existing air purification equipment, especially those used in pet environments, commonly suffers from poor airflow organization during actual operation. If the purified airflow from the equipment's outlet is projected horizontally, it is prone to short-circuiting upon landing due to mixing with surrounding air, resulting in insufficient airflow range. Simultaneously, when the outlet angle or wind speed is improperly designed, large-angle vortices can easily form, causing airflow turbulence and further limiting the effective guiding distance. These airflow defects mean the equipment lacks sufficient directional guidance capability for lightweight particles such as pet hair suspended in the air, leading to decreased intake air capture efficiency. Due to the limited airflow coverage, some pet hair cannot be effectively transported to the first air inlet and is instead blown away or even lifted up by strong winds, resulting in a "blown-away" phenomenon that severely affects purification performance. To compensate for insufficient airflow coverage, existing solutions often increase the fan component speed to enhance airflow, but this easily leads to increased noise and energy consumption. Therefore, optimizing the airflow structure to achieve long-distance, stable, and low-disturbance airflow induction, thereby improving the capture efficiency and purification range of lint, is a technical challenge that urgently needs to be solved in this field. Utility Model Content

[0003] The main purpose of this utility model is to propose an air purification device that aims to solve the technical problems of existing air purification devices, such as small adsorption range and low adsorption efficiency due to unreasonable airflow organization during operation, and even hair being blown away.

[0004] To achieve the above objectives, the air purification device proposed in this utility model includes:

[0005] The main body of the equipment has a first air inlet, an air outlet, and a purification air duct connecting the first air inlet and the air outlet, with the air outlet located at the top of the main body of the equipment.

[0006] A grille, disposed at the air outlet, the grille including an annular guide vane extending circumferentially thereon; and,

[0007] A top cover, the bottom of which is mounted on the top of the main body of the device, and the side of the top cover having a first annular guide surface extending circumferentially thereon;

[0008] The annular guide plate and the first annular guide surface define an annular air outlet channel that communicates with the purification air duct. The annular guide plate extends outward from bottom to top, and the first annular guide surface extends outward from bottom to top, so that the angle between the airflow direction blown out of the annular air outlet channel and the horizontal direction is A, wherein 15°≤A≤30°.

[0009] In one embodiment, the angle between the extension direction of the first annular guide surface and the horizontal direction is set to B, wherein 15°≤B≤20°.

[0010] In one embodiment, the annular guide plate has a second annular guide surface facing the first annular guide surface, and the angle between the extension direction of the second annular guide surface and the horizontal direction is set to C, wherein 40°≤C≤60°.

[0011] In one embodiment, multiple annular guide vanes are provided, and the multiple annular guide vanes are coaxially arranged and sequentially arranged from the inside to the outside along the radial direction of the grille:

[0012] The spacing between any two adjacent annular guide vanes is set to D, where 10mm ≤ D ≤ 14mm; and / or,

[0013] The number of the annular guide vanes is N, where 3 ≤ N ≤ 5.

[0014] In one embodiment, the radial spacing between two adjacent annular guide vanes is set to gradually decrease from the outside to the inside.

[0015] In one embodiment, the air purification device further includes a fan assembly and an air guide structure disposed within the purification duct, the air guide structure being located between the grille and the fan assembly;

[0016] The air guiding structure includes a plurality of air guiding plates extending radially and spaced apart circumferentially. A guide air duct is formed between two adjacent air guiding plates. The air inlet of the guide air duct is positioned toward the air outlet of the fan assembly, and the air outlet of the guide air duct is positioned toward the bottom of the grille. The air guiding plates are inclined from bottom to top at an angle of E, wherein 30°≤E≤60°.

[0017] In one embodiment, the surface of the air guide plate is arc-shaped or streamlined.

[0018] In one embodiment, an annular air duct section is formed between the air outlet port of the fan assembly and the air outlet port of the annular air outlet channel.

[0019] In the vertical direction, the inner periphery of the annular air duct section does not extend beyond the inner periphery of the air outlet port of the fan assembly.

[0020] In one embodiment, the grille further includes a plurality of support ribs extending radially and spaced apart circumferentially, the annular guide plate being supported on the upper ends of the plurality of support ribs;

[0021] The plurality of air guide plates and the plurality of supporting ribs are respectively arranged in a one-to-one correspondence in the vertical direction.

[0022] In one embodiment, the bottom of the device body is provided with the first air inlet; and / or,

[0023] A second air inlet is provided on the lower side of the main body of the equipment, and the second air inlet extends along the circumference of the main body of the equipment.

[0024] The technical solution provided by this utility model has at least the following advantages:

[0025] By controlling the included angle A between 15° and 30°, the airflow can avoid falling too early and causing short-circuit backflow, and also prevent the airflow from rising too much and failing to effectively drive the air below to participate in circulation. This ensures that the purified air is discharged evenly and circumferentially at a suitable elevation angle, forming a stable downward vortex zone. It also allows the air purifier to generate an effective negative pressure area below during operation, attracting the surrounding air containing floating hair to converge at the air inlet, thereby expanding the adsorption range of floating hair and improving adsorption efficiency. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the structure of an embodiment of the air purification device provided by this utility model;

[0028] Figure 2 for Figure 1 Explosion diagram of an air purification device;

[0029] Figure 3 for Figure 1 A cross-sectional schematic diagram of an air purification device;

[0030] Figure 4 for Figure 3 A cross-sectional schematic diagram of part of the structure of an air purification device;

[0031] Figure 5 for Figure 2 Schematic diagram of the central grille structure;

[0032] Figure 6 for Figure 2 Schematic diagram of the central air guide structure;

[0033] Figure 7 for Figure 2 Schematic diagram of the central grille and air guide structure;

[0034] Figure 8 for Figure 1 Schematic diagram of airflow field and hair removal effect of air purification equipment;

[0035] Figure 9 A schematic diagram of the airflow field distribution and pressure distribution of the air purification device provided by this utility model when the air outlet angle is 0°.

[0036] Figure 10 A schematic diagram of the airflow field distribution and pressure distribution of the air purification device provided by this utility model when the air outlet angle is 45°.

[0037] Figure 11 A schematic diagram of the airflow field distribution and pressure distribution of the air purification device provided by this utility model when the air outlet angle is 22.5°;

[0038] Figure 12 A schematic diagram showing the vector relationship between the actual outflow direction and the air delivery direction and outlet tangent direction of the fan assembly in the air purification equipment provided by this utility model;

[0039] Figure 13 A simulation diagram of the airflow velocity distribution and vortex region at the air guide structure in the air purification device provided by this utility model;

[0040] Figure 14 A comparative schematic diagram of different structural forms of the annular air duct section in the air purification equipment provided by this utility model;

[0041] Figure 15 A schematic diagram comparing the suction distance and absorption volume of different air inlet layout schemes in the air purification equipment provided by this utility model.

[0042] Explanation of icon numbers:

[0043] 100. Air purification equipment; 1. Equipment body; 1a. First air inlet; 1b. Air outlet; 1c. Purification duct; 1d. Annular air outlet duct; d1. Annular duct section; 2. Grille; 21. Annular guide plate; 211. Second annular guide surface; 22. Support rib; 3. Top cover; 31. First annular guide surface; 4. Fan assembly; 5. Air guiding structure; 51. Air guide plate; 5a. Air guiding duct;

[0044] 11. Base; 12. Main body; 121. Filter assembly; 122. Outer shell; a. Air inlet channel; b. Filter air duct; c. Second air inlet.

[0045] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0046] 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 scope of protection of the present utility model.

[0047] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0048] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0049] This utility model proposes an air purification device suitable for various places requiring air purification, such as homes, offices, hospitals, laboratories, and vehicles. It can be integrated into air purifiers, air conditioners, fresh air systems, and fan assembly boxes to remove particulate pollutants such as dust, hair, pollen, and PM2.5 from the air. The air purification device can also be applied to portable purification devices to achieve indoor air circulation and purification. For ease of explanation, the following description uses an application to a vertical air purifier as an example to specifically describe its filtration method. For other applications, such as vehicle-mounted purification modules, portable purifiers, or embedded fresh air unit assemblies, the structure can be adapted to meet actual space and airflow requirements; this specification does not limit such applications.

[0050] Please see Figures 1 to 3 In one embodiment of this utility model, the air purification device 100 includes a device body 1, a grille 2, and a top cover 3. The device body 1 has a first air inlet 1a, an air outlet 1b, and a purification air duct 1c connecting the first air inlet 1a and the air outlet 1b. The air outlet 1b is located at the top of the device body 1. The grille 2 is disposed at the air outlet 1b and includes an annular guide plate 21 extending circumferentially therefrom. The bottom of the top cover 3 is mounted on the top of the device body 1, and the side of the top cover 3 has a first annular guide surface 31 extending circumferentially therefrom. An annular air outlet duct 1d communicating with the purification air duct 1c is defined between the annular guide plate 21 and the first annular guide surface 31. The annular guide plate 21 extends outward from bottom to top, and the first annular guide surface 31 extends outward from bottom to top, such that the angle between the airflow direction blown out of the annular air outlet duct 1d and the horizontal direction is A, wherein 15°≤A≤30°.

[0051] Specifically, the purification unit has an air inlet, an air outlet 1b, and an internal purification duct 1c connecting the two. The air outlet 1b is located at the top of the purification unit, facilitating airflow discharge from the top. During the purification process, air enters the purification duct 1c through the air inlet, is purified by the filter components, and is discharged from the top air outlet 1b. This arrangement facilitates an airflow circulation pattern of top-supply and bottom-return air, and, in conjunction with the subsequent airflow guiding structure, prevents ineffective backflow in the area near the equipment.

[0052] The grille 2 is located at the air outlet 1b and includes an annular guide plate 21 extending circumferentially. The annular guide plate 21 extends outwards and upwards. It guides the airflow, causing the airflow to adhere to the surface of the guide plate and flow along it. Utilizing the Coanda effect of the fluid, it controls the airflow to diffuse in a predetermined direction. The inclination angle of the annular guide plate 21 can be adjusted according to actual needs. Of course, it can also adopt a segmented or multi-curvature surface design, and the specific form is not limited to these.

[0053] The top cover 3 has a first annular guide surface 31 that extends continuously in the circumferential direction on its side. The first annular guide surface 31 extends from bottom to top and outward at an angle. Its surface shape can be a straight inclined surface, an arc surface, or a folded structure composed of multiple planes. The specific shape can be adjusted according to the airflow simulation results or the mold forming process. This specification does not impose specific limitations on this embodiment.

[0054] The grille 2 is located at the air outlet 1b of the purification unit and includes an annular guide plate 21 extending circumferentially, which also extends outward from bottom to top. The annular guide plate 21 and the first annular guide surface 31 are spatially opposite to each other, forming an annular air outlet channel 1d that is continuously connected circumferentially between them. The cross-section of the annular air outlet channel 1d can be convergent, of equal width, or slightly diffused, and the specific structure can be designed according to the requirements of air pressure distribution and air outlet uniformity.

[0055] The annular air outlet duct 1d is connected to the internal purification air duct 1c, so that the purified air can be discharged evenly from the top of the equipment in a circumferential manner, avoiding airflow deflection or excessive local vortices caused by uneven air outlet.

[0056] Please see Figure 3 and Figure 4 The angle between the air outlet direction of the annular air outlet duct 1d and the horizontal direction is A, and the range of the angle A is limited to 15° to 30°.

[0057] Please see Figure 8 and Figure 9 When the included angle A is less than 15°, the outlet airflow is nearly horizontal or slightly downward tilted. After leaving the annular outlet duct 1d, the airflow rapidly decays due to gravity and momentum, and tends to fall quickly at a location close to the equipment (e.g., within 1 meter), forming a significant "short-circuit" phenomenon. At this time, a local positive pressure zone appears within approximately 0.5 to 1 meter directly in front of the equipment, causing intensified airflow recirculation. Some of the purified air is re-inhaled into the inlet area, resulting in a decrease in circulation efficiency. Simultaneously, an unstable vortex structure forms in this area, where floating hair repeatedly disturbs and bounces between the inlet and outlet 1b, making it difficult to be effectively captured. It may even be blown to a more distant area due to localized strong shear, reducing the overall purification effect.

[0058] Please see Figure 10When the included angle A is greater than 30°, for example, reaching 45°, the airflow is directed too upwards, causing a large amount of airflow to diffuse upwards, forming a rising column of air resembling a "candle flame." At this time, negative pressure is generated in the central area surrounded by the annular region, but the actual airflow does not flow upwards at the set angle; instead, it bends and dissipates upwards along the edge of the equipment. This unintended flow pattern prevents the airflow from effectively covering the space below, limiting the air delivery distance and resulting in significant energy loss. Furthermore, because the airflow is mainly concentrated in the top area, it is difficult to engage the air at the bottom in circulation, causing the loose hair below to be insufficiently drawn in, thus weakening the adsorption capacity.

[0059] Please see Figure 11 By controlling the included angle A between 15° and 30°, preferably 22.5°, the airflow is directed out at a moderate upward angle. Under the influence of fluid viscosity and the Coanda effect, the airflow adheres smoothly to the surfaces of the annular guide plate 21 and the first annular guide surface 31, preventing early flow separation. Under these conditions, the airflow has good range stability after leaving the outlet channel, enabling it to deliver purified air to an area more than 1 meter away from the equipment, effectively avoiding the risk of near-field short circuits. Simultaneously, due to the upward angle of the airflow release, an induced flow field is formed below it, moving from the outside in and from top to bottom. A stable and continuous lower vortex zone is formed approximately 300 mm below the equipment. This area has low static pressure and moderate dynamic pressure, possessing strong negative pressure attraction capabilities, which can gradually guide pet hair suspended on the ground and in low-altitude areas to the vicinity of the air inlet for efficient collection. Experimental results show that the outflow pattern within this angle range significantly improves airflow organization, reduces the phenomenon of pet hair being blown away or flowing back, and enhances overall purification performance.

[0060] Because the lower vortex zone is formed by the movement of surrounding air induced by the outlet airflow, its coverage is positively correlated with the outlet distance, and its intensity is affected by the outlet air velocity, static pressure distribution, and return air path. Under this airflow organization, the lower vortex zone can effectively cover a certain radius area around the equipment, forming an airflow trend from the outside to the inside and from top to bottom. This gradually guides suspended or drifting pet hair to the vicinity of the air inlet, achieving long-distance, low-disturbance particulate matter transport, reducing the phenomenon of pet hair being directly blown away or lifted, and improving the overall collection efficiency.

[0061] By controlling the included angle A between 15° and 30°, the airflow can avoid falling too early and causing short-circuit backflow, and also prevent the airflow from rising too much and failing to effectively drive the air below to participate in circulation. This ensures that the purified air is discharged evenly and circumferentially at a suitable elevation angle, forming a stable downward vortex zone. It also allows the air purifier 100 to generate an effective negative pressure area below during operation, attracting the surrounding air containing floating hair to converge at the air inlet, thereby expanding the adsorption range of floating hair and improving adsorption efficiency.

[0062] It should be noted that in order to keep the included angle A between 15° and 30°, combined with Figure 12 It can be seen that the actual outflow direction is the vector synthesis of the air supply direction of the fan assembly 4 and the outlet tangential direction, and the outlet tangential direction is affected by the length and shape of the outlet duct. The angles of the first annular guide surface 31 and the second annular guide surface 211 need to be set appropriately to effectively adjust the outlet tangential direction, ensuring that the synthesized actual outflow direction falls within the ideal range of 20° to 30°, thus ensuring that the airflow is discharged at a suitable elevation angle and avoiding short-circuit backflow or upward accumulation problems.

[0063] Specifically, please refer to Figure 3 and Figure 4 In this embodiment, the angle between the extension direction of the first annular guide surface 31 and the horizontal direction is set to B, where 15°≤B≤20°.

[0064] It should be noted that the design of this angle range is based on the vector composition relationship between the outlet tangential of the air duct and the air supply direction of the fan assembly 4. Since the purification air duct 1c has a certain length of transition section at the top outlet, the airflow already has a certain lateral momentum before entering the annular outlet air duct 1d. Therefore, the actual outlet direction is not entirely determined by the air supply direction of the fan assembly 4, but is formed by the combined effect of the air supply direction of the fan assembly 4 and the outlet tangential direction.

[0065] By controlling the inclination angle B of the first annular guide surface 31 between 15° and 20°, it can match the deflection trend of the outlet tangential direction, so that the airflow maintains a stable and controllable deflection angle when it leaves the annular outlet airflow channel 1d, avoiding airflow turbulence caused by the guide surface being too steep or too gentle. Of course, other angle settings can also be used, and the specific settings can be adjusted according to the air duct structure and experimental results. This specification does not limit this embodiment.

[0066] For details, please continue reading Figure 3 and Figure 4 In this embodiment, the annular guide plate 21 has a second annular guide surface 211 facing the first annular guide surface 31. The angle between the extension direction of the second annular guide surface 211 and the horizontal direction is set to C, where 40°≤C≤60°.

[0067] The purpose of setting the included angle C within this range is to enhance the adhesion of the airflow within the annular outlet channel 1d.

[0068] Specifically, since the airflow has a large vertical component when it enters the annular outlet airflow duct 1d from the purification air duct 1c, if the angle of the second annular guide surface 211 is too small, the airflow is prone to detachment, causing local eddies; if the angle is too large, it may lead to excessive airflow acceleration and increased pressure loss.

[0069] By controlling the included angle C between 40° and 60°, the airflow can smoothly transition along the guide surface after entering the annular outlet channel 1d, so that the airflow can complete the direction adjustment before the outlet, reduce energy loss, and at the same time play a role in suppressing boundary layer separation, thereby ensuring that the airflow maintains good continuity and stability in the outlet channel.

[0070] It should be noted that the shape of the second annular guide surface can be a straight inclined surface or an arc-shaped curved surface. The specific form can be determined according to the mold process and flow field simulation results. This specification does not limit this aspect in the embodiments.

[0071] Furthermore, to avoid problems such as uneven airflow distribution, poor air guiding effect, excessive wind resistance, or insufficient effective air outlet area caused by unreasonable air outlet structure design in air purification equipment, please refer to... Figure 2 and Figure 5 In this embodiment, multiple annular guide plates 21 are provided, and the multiple annular guide plates 21 are coaxially arranged and arranged sequentially from the inside to the outside along the radial direction of the grille 2: the spacing between each pair of adjacent annular guide plates 21 is set to D, where 10mm≤D≤14mm; and / or, the number of annular guide plates 21 is N, where 3≤N≤5.

[0072] Multiple annular guide vanes 21 are arranged coaxially and sequentially from the inside to the outside along the radial direction of the grille 2, so that the airflow can be guided in layers when passing through the guide vanes at different radius positions, forming a multi-layer annular outflow, thereby enhancing the entrainment effect on the surrounding air and improving the overall airflow induction capability.

[0073] Multiple annular guide vanes 21 can be set with the same or different tilt angles. The specific angle can be adjusted according to the actual airflow requirements. This specification does not limit this aspect in the embodiments.

[0074] The spacing D between any two adjacent annular guide vanes 21 is controlled between 10mm and 14mm. This range is set based on a comprehensive consideration of the air outlet area and airflow uniformity.

[0075] When the spacing D is less than 10mm, the distance between adjacent guide vanes is too small, resulting in a reduction in the cross-sectional area of ​​the air outlet channel, an increase in local wind speed, an increase in flow resistance, and a tendency to cause turbulence and pressure loss.

[0076] When the spacing D is greater than 14mm, the distance between adjacent guide vanes is too large, and the airflow diffuses freely without being effectively guided, weakening the guiding effect and affecting the stability of the outflow direction.

[0077] By controlling the spacing D between 10mm and 14mm, preferably 11mm to 13mm, both the air outlet area and the air guiding effect can be taken into account, so that the airflow is evenly distributed between each layer, reducing flow interference and thus ensuring stable and continuous air outlet.

[0078] The number N of the annular guide vanes 21 is controlled between 3 and 5, which is based on the balance between guiding efficiency and wind resistance characteristics.

[0079] When the number N is less than 3, the number of guide vanes is too small, resulting in insufficient constraint and guidance of airflow, making it difficult to form a stable and uniform annular outflow, and the air guiding effect is poor.

[0080] When the number N is greater than 5, although the guiding effect is enhanced, the total obstruction area between the guide vanes increases, the effective air outlet area decreases, resulting in increased wind resistance, increased load on the fan assembly 4, and reduced energy efficiency.

[0081] Setting the quantity N to 3 to 5, for example, preferably 4 pieces, can ensure sufficient airflow levels while maintaining a reasonable airflow area, thus avoiding the impact on overall ventilation performance due to excessive structural density.

[0082] This configuration allows multiple annular guide vanes 21 to form a graded flow guiding structure in the radial direction. By rationally controlling the spacing between adjacent vanes and the total number, the airflow in the outlet area can be guided in an orderly manner while maintaining a sufficient flow area. This improves the uniformity and directional controllability of the outlet airflow and reduces flow resistance.

[0083] Furthermore, in this embodiment, the radial distance between two adjacent annular guide plates 21 is set to gradually decrease from the outside to the inside.

[0084] This configuration results in a larger spacing between the outer guide vanes and a smaller spacing between the inner guide vanes. Since the airflow distribution within the purification duct 1c is influenced by the duct geometry and pressure gradient when entering the annular outlet duct 1d, the outer region typically has more space to accommodate the airflow. By increasing the spacing between the outer guide vanes, a larger outlet duct cross-sectional area can be provided for the outer region, allowing more airflow to be discharged through the outer wall. Correspondingly, the spacing between the inner guide vanes is reduced to avoid excessive concentration of airflow on the inner side due to an excessively large duct, which could cause excessively high local wind speeds and induce turbulence or disturbance.

[0085] It should also be noted that the outer air outlet area is farther from the center of the equipment. If the air volume is insufficient, it will be difficult to effectively drive the surrounding air to form a stable downward vortex zone, affecting the adsorption range of lint. On the other hand, the inner area is closer to the central axis, and the airflow itself has a strong converging tendency. Appropriately reducing the air outlet area can still ensure sufficient air volume output. Therefore, by gradually reducing the radial spacing from the outside to the inside, the air volume can be preferentially distributed on the outer wall, making the outer ring air outlet stronger and more complete, thereby enhancing the entrainment effect on the distant air and expanding the coverage radius of the downward vortex zone.

[0086] The change in the radial spacing can be linear or non-linear, such as adjusting according to a specific curve. The specific form can be determined based on the actual duct structure and airflow simulation results. This specification does not limit this aspect in the embodiments.

[0087] This configuration results in a gradient distribution of the radial spacing between adjacent annular guide plates 21, allowing more airflow to be discharged from the outer area. This enhances the airflow induction capability around the equipment, expands the adsorption range of lint, and reduces the "edge failure" phenomenon caused by weak airflow from the outer side.

[0088] Furthermore, to prevent rotational disturbances in the airflow at the outlet of the fan assembly 4 in the air purification equipment, and to avoid violent collisions with the air guide structure 5 that could lead to eddy currents, thereby affecting airflow smoothness, reducing air delivery distance, and decreasing lint adsorption efficiency, please refer to [link to relevant documentation]. Figure 2 and Figure 6 In this embodiment, the air purification device 100 further includes a fan assembly 4 and an air guide structure 5 disposed within the purification duct 1c. The air guide structure 5 is located between the grille 2 and the fan assembly 4. The air guide structure 5 includes a plurality of air guide plates 51 extending radially and spaced apart circumferentially. A guide duct 5a is formed between two adjacent air guide plates 51. The air inlet of the guide duct 5a faces the air outlet of the fan assembly 4, and the air outlet of the guide duct 5a faces the bottom of the grille 2. The air guide plates 51 are inclined from bottom to top at an angle of E, wherein 30°≤E≤60°.

[0089] It should be noted that in the air purification device 100, the fan assembly 4 is the power source for gas flow. The airflow output from the air port of the fan assembly 4 rotates outward at a 45° angle in a clockwise or counterclockwise direction. If the rotating airflow directly enters the subsequent guide duct 5a, it is prone to colliding with the wall or structural edge of the guide duct 5a, forming local vortices, increasing flow resistance, causing energy loss, and affecting the airflow range and stability.

[0090] In this embodiment, the inlet port of the guide duct 5a is positioned facing the outlet port of the fan assembly 4 to receive the rotating airflow from the fan assembly 4; the outlet port is positioned facing the bottom of the grille 2 to deliver the guided airflow to the annular outlet duct 1d. This structure serves as a transition connecting the outlet of the fan assembly 4 and the final outlet 1b, allowing the airflow to gradually transform from a high-momentum, swirling state into an orderly, low-disturbance axial flow.

[0091] By setting the air guide plate 51 to be tilted from bottom to top with an angle E in the range of 30° to 60°, the airflow can be continuously attached to the surface of the air guide plate 51. The Coanda effect is used to achieve gradual adjustment of the airflow direction, thereby effectively suppressing eddy generation, reducing local pressure loss, and improving airflow transmission efficiency.

[0092] For further information, please refer to [link / reference]. Figure 6 In this embodiment, the surface of the air guide plate 51 is arc-shaped or streamlined. This allows the air guide plate 51 to provide a continuously varying curvature surface as airflow passes through, avoiding sharp corners or abrupt cross-sections.

[0093] Specifically, when airflow flows along the surface of the guide vane 51, the streamlined or arc-shaped surface can reduce the deflection gradient of the airflow and decrease the rate of change of the velocity gradient, thereby suppressing boundary layer separation and maintaining airflow adhesion. During the rotating outflow of the fan assembly 4, the arc-shaped or streamlined surface of the guide vane 51 can better conform to the airflow trajectory and achieve smooth guidance.

[0094] Combination Figure 13 As can be seen, if the surface of the air guide plate 51 is a straight slope or has an angled structure, the airflow is prone to form a low-pressure area on the leeward side under high-speed impact, inducing local vortices (as shown in area ② in the figure), increasing flow losses. However, by using an arc-shaped or streamlined surface, the airflow can smoothly transition along the curved surface, the flow separation point is delayed or even eliminated, effectively reducing the formation of vortex regions, reducing pressure drop, and improving flow efficiency.

[0095] Further, please refer to Figure 3 and Figure 4 In this embodiment, an annular air duct section d1 is formed between the air outlet port of the fan assembly 4 and the air outlet port of the annular air outlet channel 1d. In the vertical direction, the inner periphery of the annular air duct section d1 does not extend beyond the inner periphery of the air outlet port of the fan assembly 4.

[0096] It is understandable that the annular duct section d1 serves as a transition channel connecting the outlet end of the fan assembly 4 and the air outlet 1b of the final air purification device 100. The annular duct section d1 directly affects the airflow efficiency and distribution uniformity. In the vertical direction, the inner periphery of the annular duct section d1 does not extend beyond the inner periphery of the air outlet port of the fan assembly 4.

[0097] Combination Figure 14 As can be seen, by taking the inner diameter of the air outlet of the fan assembly 4 as the vertical reference line, the bending path of the annular air duct section d1 is ensured not to exceed the reference line, thereby avoiding excessive bending of the airflow during the turning process.

[0098] In Type 1 and Type 2, the curved portion of the annular duct section d1 extends beyond the vertical line, resulting in an airflow turning angle greater than 90°. A large amount of airflow accumulates in the corner area, forming a significant vortex zone, causing energy loss and airflow reduction. Simultaneously, because the airflow cannot pass smoothly, localized pressure increases and uneven velocity occur, affecting the subsequent guiding effect.

[0099] In Type 3, the bend of the annular duct section d1 does not exceed the vertical line, and the airflow can transition along a relatively gentle path. Although basic flow can be achieved, the upper and lower edges are parallel, the jet does not have an acceleration structure, the air outlet speed is limited, and the air delivery distance is still restricted.

[0100] In contrast, in Type 4, the upper and lower edges of the annular air duct section d1 are not parallel. The upper edge has an inclination angle of approximately 15°, and the lower edge has an inclination angle of approximately 30°. Furthermore, the overall curvature does not cross the vertical line, causing the airflow to form a converging nozzle structure before entering the annular outlet air duct 1d. This creates a static pressure chamber at the outlet 1b, allowing the airflow to convert some of the static pressure into dynamic pressure as it passes through, thereby increasing the outlet velocity and enabling it to have a longer range after leaving the outlet 1b, thus expanding the area for adsorbing floating hair.

[0101] Furthermore, to reduce the increase in flow resistance caused by misalignment of structural components in the airflow path during the operation of air purification equipment, please refer to [link to relevant documentation]. Figure 7 In this embodiment, the grille 2 further includes a plurality of support ribs 22 extending radially and spaced apart circumferentially, and the annular guide plate 21 is supported on the upper ends of the plurality of support ribs 22. The plurality of air guide plates 51 and the plurality of support ribs 22 are respectively arranged in a one-to-one correspondence in the vertical direction.

[0102] The support ribs 22 support multiple annular guide vanes 21 on their upper ends to maintain the spatial position and overall stability of the annular guide vanes 21. Multiple guide vanes 51 and multiple support ribs 22 are respectively arranged in a one-to-one correspondence in the vertical direction, that is, in the vertical projection direction, each guide vane 51 and its upper support rib 22 are located in the same radial plane, and the two are aligned in the circumferential position.

[0103] If the air guide plate 51 and the support rib 22 are not aligned, the airflow may collide with the side edge of the support rib 22 or enter the asymmetric channel after leaving the air guide plate 51, which may easily form eddies or boundary layer separation in a local area, increasing pressure drop and energy loss.

[0104] Thus, multiple air guide plates 51 and multiple support ribs 22 are arranged one-to-one in the vertical direction, ensuring that the airflow direction remains continuous as it flows from bottom to top through the channel area formed by the air guide plates 51 and support ribs 22, avoiding airflow deflection, sudden expansion, or sudden contraction caused by structural misalignment. In the vertically continuous air outlet direction, this reduces flow interference when the airflow passes through multiple stages of the structure, resulting in a straighter airflow path and smoother flow transition.

[0105] Furthermore, to avoid situations where improper air inlet placement results in limited suction range for loose hair near the floor, the creation of dust-trapping blind spots, or the hair being easily dispersed by the exhaust airflow, please refer to [link to relevant documentation]. Figure 1 and Figure 2In this embodiment, a first air inlet 1a is provided at the bottom of the device body 1; and / or a second air inlet c is provided on the lower side of the device body 1, the second air inlet c extending along the circumference of the device body 1.

[0106] Because pet hair tends to sink due to gravity, its main distribution area is concentrated near the ground. Therefore, the first air inlet 1a is located at the bottom, close to the ground, to make it more direct and effective to draw in air containing pet hair from the ground area, and to more efficiently capture pet hair particles that have fallen to the ground or are suspended in the low air. At the same time, a large vertical distance is maintained between the first air inlet 1a and the top air outlet 1b to avoid the formation of an "airflow short circuit" due to an excessively short airflow path, and to reduce the phenomenon of pet hair bouncing back and forth between the air inlet and outlet 1b.

[0107] The second air inlet c extends circumferentially along the main body 1 of the equipment, allowing it to be arranged in a ring or segmented continuous manner. The second air inlet c, together with the first air inlet 1a, forms a multi-faceted air intake structure, enabling the air purification equipment 100 to simultaneously intake air from the bottom and lower sides.

[0108] This setup expands the air coverage area around the equipment, improves airflow uniformity, reduces dead zones, and enhances the overall ability to capture dispersed hair. Combined with... Figure 15 As can be seen, the bottom + lower side air intake scheme (case 2) results in a greater forward and lateral influence distance compared to bottom air intake only (case 1), side air intake only (case 3), or double-sided vertical strip air intake (case 4), with a calculated absorption volume of 0.18m³. 3 This is significantly better than other structural forms, indicating that this multi-faceted air intake method can effectively improve the range and efficiency of hair removal.

[0109] Specifically, please refer to Figure 1 and Figure 2 In this embodiment, the first air inlet 1a extends circumferentially along the main body 1 of the device. The first air inlet 1a extends continuously or in segments along the outer periphery of the main body 1 of the device, forming an annular or nearly annular air intake channel a. The first air inlet 1a can realize a circumferentially distributed air intake area under the device, which can expand the bottom air intake area and avoid uneven air intake or airflow deviation caused by local openings.

[0110] When the first air inlet 1a extends circumferentially, it can work together with the second air inlet c set on the lower side to form a multi-faceted air intake structure. During operation, the air purification equipment 100 can simultaneously draw in air from the bottom and the lower side, enhancing its ability to capture air from the ground and near-ground space and reducing dead zones in air intake.

[0111] In addition, the first air inlet 1a extends circumferentially, which can disperse the airflow and reduce the local air velocity under the same total air volume conditions, thereby reducing the turbulence intensity and pressure loss at the inlet.

[0112] Specifically, please refer to Figure 3 and Figure 4 In this embodiment, the main body 1 of the device includes a base 11 and a main body 12. The main body 12 is mounted on the top of the base 11, and there is a gap between the two to form an air inlet channel a. The air inlet port of the air inlet channel a is located at the bottom of the base 11, forming a first air inlet 1a, which is used to draw in air near the ground; the air outlet port is connected to the filter air duct b of the main body 12 to realize airflow introduction.

[0113] The main body 12 includes a filter assembly 121 and a housing 122. The housing 122 is disposed around the filter assembly 121 and is spaced apart from the filter assembly 121, forming a vertically extending filter duct b between the two. The lower port of the filter duct b is connected to the air outlet port of the air inlet channel a, so that the air entering from the first air inlet 1a flows from bottom to top into the filter duct b after passing through the air inlet channel a, and is purified by the filter assembly 121.

[0114] The filter assembly 121 may include a pre-filter, a HEPA layer, an activated carbon layer, etc. The specific structure and materials can be configured according to actual purification needs, and this specification does not limit this aspect. The gap between the housing 122 and the filter assembly 121 can be set according to airflow and pressure drop requirements to ensure flow area and filtration efficiency.

[0115] By forming a continuous air intake path at the bottom of the air purifier 100, with the first air intake 1a exposed to the ground area circumferentially, the air intake range can be effectively expanded, reducing dead zones. At the same time, the air intake position is far from the top air outlet 1b, reducing the risk of airflow short-circuiting and preventing loose hair from being blown away.

[0116] Furthermore, to optimize the air intake performance and lint collection capability of the air purification device 100, in this embodiment, the side surface area of ​​the device body 1 is S, and the area of ​​the first air inlet 1a is S1, wherein 1 / 6S ≤ S1 ≤ 1 / 3S, preferably, S1 is set to 1 / 4S. It should be noted that this ratio range is set based on a comprehensive consideration of air intake volume, airflow resistance, adsorption distance, and structural layout.

[0117] Specifically, when S1 is less than 1 / 6S, the air inlet area is too small, which limits the flow capacity, increases the air intake resistance, affects the overall air volume output, and makes it difficult to form an effective negative pressure zone, thereby reducing the ability to adsorb ground hair; when S1 is greater than 1 / 3S, although the flow area increases, it causes a decrease in local wind speed or weakens the structural strength, and is prone to uneven airflow distribution, which is not conducive to stable air intake.

[0118] The experimental results show that the adsorption distance of clumps varies significantly under different air inlet areas. When the air inlet area of ​​the cabin door is 150-400 mm²... 2 When S1 = 1 / 8S, the tuft adsorption distance is 350mm; when the air inlet area increases to approximately 75200mm², the adsorption distance of the tuft is 350mm. 2 When S1 = 1 / 2S, the adsorption distance reaches 400mm; when the air inlet area is 1 / 4S, the adsorption performance is optimal, and the adsorption distance of the clump of hair is greater than 400mm. This data shows that by reasonably configuring the air inlet area, the air inlet efficiency and long-distance capture capability can be improved, especially at medium and high air volume settings.

[0119] It should be noted that the side surface area S of the main body 1 here is the surface area of ​​the entire door, and S1 is the actual effective air intake area of ​​the first air inlet 1a located at the bottom of the main body 1. This proportional relationship applies to the bottom air intake structure and aims to balance air intake capacity and structural integrity.

[0120] The specific value of S1 can be adjusted within the above range according to the overall size of the equipment, the performance of the fan component 4, and actual usage requirements. The opening form, grid density, and edge treatment method of the air inlet can be designed according to process requirements, and this specification does not limit them in the embodiments.

[0121] By controlling the area of ​​the first air inlet 1a to between 1 / 6 and 1 / 3 of the side surface area of ​​the main body 1 of the equipment, and preferably 1 / 4S, the equipment has good air intake capacity and structural adaptability during operation, thereby improving the collection range and purification efficiency of floating hair near the ground.

[0122] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An air purification device (100), characterized in that, include: The main body of the equipment (1) has a first air inlet (1a), an air outlet (1b), and a purification air duct (1c) connecting the first air inlet (1a) and the air outlet (1b), wherein the air outlet (1b) is located at the top of the main body of the equipment (1); A grille (2) is disposed at the air outlet (1b), the grille (2) comprising an annular guide vane (21) extending circumferentially thereon; and, Top cover (3), the bottom of which is mounted on the top of the main body (1) of the device, and the side of the top cover (3) has a first annular guide surface (31) extending circumferentially thereon; The annular guide plate (21) and the first annular guide surface (31) define an annular air outlet channel (1d) that communicates with the purification air duct (1c). The annular guide plate (21) extends outward from bottom to top, and the first annular guide surface (31) extends outward from bottom to top, so that the angle between the airflow direction blown out by the annular air outlet channel (1d) and the horizontal direction is A, wherein 15°≤A≤30°.

2. The air purification device (100) as described in claim 1, characterized in that, The angle between the extension direction of the first annular guide surface (31) and the horizontal direction is set to B, where 15°≤B≤20°.

3. The air purification device (100) as described in claim 1, characterized in that, The annular guide plate (21) has a second annular guide surface (211) facing the first annular guide surface (31), and the angle between the extension direction of the second annular guide surface (211) and the horizontal direction is set to C, wherein 40°≤C≤60°.

4. The air purification device (100) as described in claim 1, characterized in that, Multiple annular guide plates (21) are provided, and the multiple annular guide plates (21) are coaxially arranged and arranged sequentially from the inside to the outside along the radial direction of the grille (2): The spacing between any two adjacent annular guide vanes (21) is set to D, where 10 mm ≤ D ≤ 14 mm; and / or, The number of the annular guide vanes (21) is N, where 3≤N≤5.

5. The air purification device (100) as described in claim 4, characterized in that, The radial spacing between two adjacent annular guide plates (21) is set to gradually decrease from the outside to the inside.

6. The air purification device (100) as described in claim 1, characterized in that, The air purification device (100) further includes a fan assembly (4) and an air guide structure (5) disposed in the purification duct (1c), wherein the air guide structure (5) is located between the grille (2) and the fan assembly (4); The air guiding structure (5) includes a plurality of air guiding plates (51) extending radially and spaced apart circumferentially. A guide air duct (5a) is formed between two adjacent air guiding plates (51). The air inlet of the guide air duct (5a) is arranged toward the air outlet of the fan assembly (4). The air outlet of the guide air duct (5a) is arranged toward the bottom of the grille (2). The air guiding plate (51) is inclined from bottom to top with an inclination angle of E, wherein 30°≤E≤60°.

7. The air purification device (100) as described in claim 6, characterized in that, The surface of the air guide plate (51) is arc-shaped or streamlined.

8. The air purification device (100) as described in claim 6, characterized in that, An annular air duct section (d1) is formed between the air outlet port of the fan assembly (4) and the air outlet port of the annular air outlet duct (1d). In the vertical direction, the inner periphery of the annular air duct section (d1) does not extend beyond the inner periphery of the air outlet port of the fan assembly (4).

9. The air purification device (100) as described in claim 6, characterized in that, The grille (2) also includes a plurality of support ribs (22) extending radially and spaced apart circumferentially, and the annular guide plate (21) is supported on the upper end of the plurality of support ribs (22). The plurality of air guide plates (51) and the plurality of support ribs (22) are respectively arranged in a one-to-one correspondence in the vertical direction.

10. The air purification device (100) as described in claim 1, characterized in that, The bottom of the main body of the equipment (1) is provided with a first air inlet (1a); and / or, The lower part of the main body (1) of the equipment is also provided with a second air inlet (c), which extends along the circumference of the main body (1).

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