Air purifier

Abstract

The utility model belongs to the field of air purifier, specifically provides an air purifier, can be in the upstream of negative pressure source without using consumable filter case high -efficiently filter air suspended matter, and the floor area is small, and the processing height range is big. Air purifier includes: cyclone separation part, separates dust gas through cyclone separation mode, contain: the dust bucket for dust collection, at least one suction port of dust bucket upper portion, the negative pressure source that the import is linked with dust bucket communication;At least two flow guide channels, form the flow guide gas path that will suspend the material in the outside environment guide into the suction port, every flow guide channel all have the flow guide entrance that sets up in the air purifier outer surface, located flow guide gas path upstream, and the flow guide exit that is located flow guide gas path downstream and is linked with the suction port communication. Among them, the area that sets up flow guide exit is S1, the area that flow guide entrance is S2, then S2: S1 is greater than or equal to 3;Suppose the maximum height of flow guide entrance upper and lower direction is L2, the maximum height of dust bucket upper and lower direction is L3, then L2: L3 is greater than or equal to 1:2.

Description

Technical Field

[0001] This utility model belongs to the field of air purifiers, specifically relating to an air purifier that can efficiently absorb airborne suspended particles. Background Technology

[0002] In the fast-paced urban life, allergens such as pet hair and dust floating indoors can easily trigger allergic reactions such as sneezing and nasal congestion, and even aggravate respiratory diseases. As a core device for improving indoor air quality, air purifiers are gradually becoming a standard feature of healthy living in modern families.

[0003] Existing air purifiers generally trap airborne dust using filter materials, such as HEPA (High-Efficiency Particulate Air) filters, located upstream of the negative pressure source. With use, the surface of these filter materials (filter media / screens) becomes covered with trapped dirt, which clogs the filter pores, causing a sharp decline in the filter's filtration capacity. Therefore, it is necessary to periodically remove the old filter media and replace it with new one. For example, Honeywell's patent CN2015208658368 discloses an air purifier where a cylindrical filter element forms the purifier's body. The filter element uses multiple layers of filter media, including a pre-filter, HEPA filter, activated carbon filter, formaldehyde removal filter, deodorizing filter, and humidifying filter. This requires periodic complete removal and replacement of the entire filter element. This is not only time-consuming and laborious, but also expensive due to the high cost of frequent filter element replacements, as the filter material is difficult to degrade and easily pollutes the environment. Blueair's patent CN2020111338905 discloses another air purifier that uses a two-layer plate-shaped HEPA filter for purification. This purifier also suffers from the problems of difficult replacement, expensive consumables, and potential environmental pollution. Furthermore, because the filters in these air purifiers are consumables that need to be replaced as a whole, users often wait until the filters are completely covered in dirt before removing and replacing them to save costs. This leads to long-term accumulation of dirt on the filters, which can easily breed bacteria and produce odors.

[0004] It is evident that existing technologies generally rely on consumable filters, which not only increases the user's operational burden and maintenance costs for disassembling and installing consumables, but also makes it difficult to recycle discarded consumables, resulting in a large amount of non-degradable waste, causing resource waste and environmental pollution. Summary of the Invention

[0005] This invention was developed to solve the above-mentioned problems, and its purpose is to provide an air purifier that can filter airborne suspended particles (such as hair, particles, and other dust or dirt) over a wide range and with high efficiency without using consumable filters upstream of the negative pressure source.

[0006] This utility model provides an air purifier, comprising: a cyclone separator, including: a dust bin for dust collection, at least one inlet disposed on the upper part of the dust bin, and a negative pressure source connected to the dust bin; at least two guide channels forming a guide air path for guiding suspended matter or dust from the external environment into the inlet, each guide channel having a guide inlet located on the outer surface of the air purifier and upstream of the guide air path, and a guide outlet located downstream of the guide air path and connected to the inlet; wherein, let the area of ​​the guide outlet be S1, and the area of ​​the guide inlet be S2, then S2:S1≥3; let the maximum height of the guide inlet in the vertical direction be L2, and the maximum height of the dust bin in the vertical direction be L3, then L2:L3≥1:2; let the maximum width of the guide inlet in the direction perpendicular to the height be w2, then L2>w2.

[0007] The beneficial effects of the above scheme are:

[0008] The specially designed flow channel draws suspended particles from the external environment into the airflow, entraining them into a large, vertically extending inlet. From there, the particles accelerate upwards into a smaller outlet, eventually entering the dustbin. There, a cyclone separation process (centrifugal separation) separates the dust and air, causing the suspended particles to settle at the bottom of the bin. This eliminates the need for filter media to intercept and adhere to contaminants upstream of the negative pressure source, reducing the need for frequent filter replacements, minimizing clogging, and saving time and money. The unique design of the flow channel allows for a wide vertical purification height range, facilitating the extraction of suspended particles such as hair and lint from different height levels over a broad range. This prevents dust from falling and accumulating on the ground (where friction is high and particles are easily compacted, making them harder to clean). Furthermore, the flow inlet maintains a moderate velocity, distributing suction power appropriately across the height range. This prevents the suction from clinging to clothing, hair, or animal tails of people and animals in the vicinity, thus minimizing disruption to their activities. Furthermore, within the same volume, the air purifier of this invention, due to its above-mentioned structure, can occupy a minimal floor space while maximizing the processing range in the vertical / height direction (relative to the ground / height in space), thus effectively purifying floating dust at different heights. Preferably, in the air purifier provided by this invention, if the maximum straight-line distance between any two points on the outer contour of the dustbin's cross-section is w3, then L2:w3≥1:2; if the height of the lower edge of the flow inlet from the bottom cover (or bottom plate) of the dustbin is h2, and the height of the lower edge of the flow outlet from the bottom cover of the dustbin is h1, then h2:h1≤1:3. This design results in a larger purification range in the vertical direction. Additionally, if the lower edge of the flow inlet is flush with the bottom cover, the ratio is 0; if the lower edge of the flow inlet is lower than the bottom cover, the ratio is negative. A bottom cover can be opened on the bottom plate, allowing the bottom cover to move relative to the side of the dustbin (e.g., rotate / move outwards) to open the bottom and expose the internal structure.

[0009] Preferably, in the air purifier provided by this utility model, if the total area of ​​all airflow inlets is Su (for example, if there are three airflow inlets, then Su is the sum of the areas of the three airflow inlets), and the surface area of ​​the air purifier is S3, then Su ≥ 1 / 2S3. This design allows for the extraction of floating dust over a wider area.

[0010] Preferably, in the air purifier provided by this utility model, L2 > 2 × w2, S2:S1 ≥ 5, L2:w3 ≥ 1:1, and h2:h1 ≤ 1:5. This design allows the air purifier to extract floating hair over a wider range in the vertical direction, resulting in a greater purification height range. More preferably, L2:L3 ≥ 0.8.

[0011] Preferably, in the air purifier provided by this utility model, the number of intake ports is equal to the number of airflow channels, and both are at least three, resulting in higher and more stable purification efficiency. The intake ports are evenly spaced circumferentially relative to the dustbin, and these airflow channels are also evenly spaced circumferentially relative to the air purifier shell, facilitating the adjustment of the number of intake ports. For example, if a certain direction does not require suction, the airflow channel facing that direction can be sealed. The sealing method can use soft or hard baffles, such as plastic film or rigid baffles. For a dustbin with a non-circular cross-sectional profile, circumferential refers to the direction surrounded by the inner surface profile of the dustbin's cross-section; for an air purifier shell with a non-circular cross-sectional profile, circumferential refers to the direction surrounded by the outer surface profile of the air purifier's cross-section.

[0012] Preferably, in the air purifier provided by this utility model, the flow guiding channel has a spiral section extending around the axis of the dustbin, and the spiral section is located between the flow guiding inlet and the flow guiding outlet of the flow guiding channel. The spiral section is designed so that the velocity of the dust entering the dustbin has the largest component in the tangential direction, while the components in other directions are minimized, so that the kinetic energy is used for centrifugal separation as it enters the dustbin. In this utility model, for dustbins with non-circular cross-sectional profiles, the dustbin axis is the axis of symmetry of the dustbin; for non-circular and asymmetrical dustbins, the dustbin axis is the axis of the cyclone airflow inside the dustbin.

[0013] Preferably, in the air purifier provided by this utility model, the cross-sectional area of ​​the airflow channel gradually decreases from the airflow inlet to the airflow outlet. This gradual reduction is more uniform and smooth, which is conducive to the stable and rapid increase of dust and air.

[0014] Preferably, in the air purifier provided by this utility model, the flow guide channel is configured such that, after the negative pressure source is turned on, the lowest pressure point on each cross-section from the flow guide inlet to the flow guide outlet is located at the geometric center of the corresponding cross-section. This design ensures that the negative pressure is continuously and uniformly distributed across all pipe cross-sections of the flow guide channel, resulting in more stable airflow, less pipe wall friction, and less air resistance; furthermore, the flow guide inlet can uniformly draw in floating dust from the external environment corresponding to the entire height range.

[0015] Preferably, in the air purifier provided by this utility model, the airflow channel includes a horn section with an airflow inlet and a connecting section connecting the horn section and the intake port. The airflow channel is configured such that, after the negative pressure source is turned on, the lowest pressure point on each cross-section of the horn section is located at the geometric center of that cross-section. This design allows the negative pressure to be continuously and uniformly distributed across the cross-section of the horn section, resulting in stable airflow, less pipe wall friction, and less air resistance. Furthermore, the airflow inlet can uniformly draw in floating dust from the external environment corresponding to the entire height range. For example, if the negative pressure is lowest at the upper part of the airflow inlet, the upper part of the airflow inlet can be widened and the lower part narrowed to adjust the cross-sectional shape so that the lowest negative pressure point is located at the geometric center. The horn section can be equal to the airflow inlet, or it can include the airflow inlet and extend downstream for a distance; the latter will make the dust entering the air purifier more stable.

[0016] Preferably, in the air purifier provided by this utility model, in the airflow path, the lengths of the airflow path (path) from any point in the upper, middle, and lower regions of the airflow inlet to the airflow outlet are La, Lb, and Lc, respectively, where La = Lb = Lc. This design ensures the most uniform negative pressure at the airflow inlet. Similarly, to ensure uniform negative pressure in the channels downstream of the airflow inlet, the lengths of the airflow path from all points in each cross-section of these channels, or all points in the main area of ​​each cross-section, to the airflow outlet can be made equal.

[0017] Preferably, in the air purifier provided by this utility model, in the airflow path, the lengths of the airflow path from any point in the upper, middle, and lower regions of the airflow inlet to the airflow outlet are La, Lb, and Lc, respectively, where La < Lb and La < Lc. This design ensures that the airflow path in the upper region of the airflow inlet is the shortest and the pressure is the lowest, allowing dust particles to be drawn into the airflow inlet from a high position and preventing them from falling downwards, thus minimizing the risk of dust settling on the ground.

[0018] Preferably, in the air purifier provided by this utility model, the airflow channel includes: a horn section with an airflow inlet, and a connecting section connecting the horn section and the suction inlet; let d1 be the minimum distance from the inner surface of section A in the connecting section to the outer wall of the dustbin (outer surface of the dustbin), and d0 be the wall thickness of the connecting section, then d1≤d0. Let L5 be the extension length of the connecting section, then section A is the connecting section extending from the airflow outlet along the airflow channel to at least 1 / 4×L5. Accordingly, the airflow channel with a length of at least 1 / 4×L5 serves as the connecting section, spiraling around the dustbin; when d1=d0, the outer surface of the connecting section spirals tightly against the outer wall of the dustbin, and especially when d1=0, the wall of the dustbin forms the tube wall of the connecting section, and the tube wall of the connecting section completely overlaps with the wall of the dustbin; in addition, when d1<d0, the tube wall of the connecting section partially overlaps with the wall of the dustbin. This design minimizes the footprint and maximizes the height of the air purifier within a given volume, making it more effective at sucking up airborne dust. It also allows the dust to accelerate sufficiently in the spiral section before entering the intake, maximizing the tangential velocity of the dust entering the dustbin and using all the kinetic energy for high-speed centrifugal separation into the dustbin.

[0019] Preferably, in the air purifier provided by this utility model, the air purifier may further include an outer shell arranged around the dust bin, the outer shell being spaced a certain distance from the dust bin, the air inlets being opened on the outer shell, and all the air inlets being evenly spaced on the outer shell.

[0020] Preferably, in the air purifier provided by this utility model, the cyclone separation section may further include a secondary cone for secondary cyclone separation of the airflow after the dustbin cyclone separation. The upper part of the secondary cone is provided with at least three secondary inlets. The airflow after the primary cyclone separation enters the secondary cone through the secondary cone inlets for secondary cyclone separation, thereby further separating fine dust. The separated fine dust will accumulate at the bottom of the secondary cone. When emptying the dustbin, the fine dust at the bottom of the secondary cone can be emptied at the same time, which is easy to clean and can be emptied at any time without worrying about wasting consumables.

[0021] In addition, in the air purifier provided by this utility model, the number of inlet ports can be 1, and the outlet ports of all the flow channels are converged and connected to the inlet port. A dust baffle (deflector plate) is set at the inlet port to guide the airflow tangentially into the dust bin.

[0022] Furthermore, in the air purifier provided by this utility model, a guardrail can be installed at the airflow inlet to prevent pets or large foreign objects from accidentally entering the airflow inlet.

[0023] Furthermore, in the air purifier provided by this utility model, a soft or hard baffle can be installed at the airflow inlet to adjust the size and opening direction of the inlet. Since there is a guardrail for support, a soft baffle is also suitable.

[0024] Furthermore, in the air purifier provided by this utility model, the outline shape of the air inlet can be any one or a combination of several of the following: circle, ellipse, oblong, polygon. Attached Figure Description

[0025] Figure 1 is a schematic diagram of the structure of the air purifier according to an embodiment of the present utility model;

[0026] Figure 2 is a cross-sectional view of an air purifier according to an embodiment of the present invention;

[0027] Figure 3 shows the air purifier in its cleanup state after the upper part is lifted, according to an embodiment of this utility model. Figure 1 ;

[0028] Figure 4 shows the air purifier in its cleanup state after the upper part is lifted, according to an embodiment of this utility model. Figure 2 ;

[0029] Figure 5 is a cross-sectional view of the negative pressure source assembly, the secondary cone, and the steel mesh assembly;

[0030] Figure 6 is Figure 1 A schematic diagram of the structure after removing the outer shell;

[0031] Figure 7 is Figure 1 Schematic diagram of the structure after removing the moving parts and the outer shell Figure 1 ;

[0032] Figure 8 is Figure 1 Schematic diagram of the structure after removing the moving parts and the outer shell Figure 2 ;

[0033] Figure 9 is Figure 1 Top view after removing the negative pressure source component and the moving part;

[0034] Figure 10 is Figure 8 A sectional view;

[0035] Figure 11 is a simplified diagram showing the dimensions of the flow inlet after the outer shell is unfolded and laid flat in an embodiment of this utility model.

[0036] Figure 12 shows the maximum vertical height and maximum width dimensions of the oblong (a) and crescent-shaped (b) flow inlets. Detailed Implementation

[0037] The specific implementation scheme of the air purifier involved in this utility model will be described in detail below with reference to the accompanying drawings.

[0038] <Example>

[0039] like Figures 1-4As shown, the air purifier 1000 can absorb dust, lint, and other floating particles (dirt) suspended or floating in the air. The air purifier 1000 includes a cyclone separator 10, three airflow guides 20, a housing 30, and a moving part 40.

[0040] The cyclone separator 10 is used to separate dust and gas by cyclone separation. It includes a primary cone 11, a filter screen 12, a secondary cone 13, and a negative pressure source 14.

[0041] The primary cone 11 includes a dust bin 111 and three suction inlets 112. The dust bin 111 is used for dust collection, and the three suction inlets 112 are evenly arranged circumferentially on the upper part of the dust bin 111 relative to its circumference. The dust bin 111 can be a rigid dust cup, or it can be composed of a flexible sealing bag and a support frame. In this embodiment, the dust bin 111 is a rigid dust cup.

[0042] A filter screen 12 is disposed inside the dust bin 111 and located in the middle of the dust bin 111. It is cylindrical in shape, with at least a portion of the filter screen 12 located below the suction inlet 112 (closer to the bottom of the dust bin 111 than the suction inlet 112). The filter screen 12 is a non-consumable type and does not require replacement. In this embodiment, the filter screen 12 is a steel mesh. A primary cyclone separation chamber 113 is formed between the outer wall of the filter screen 12 and the inner wall of the dust bin 111. Dust and air are separated by cyclone centrifugal force, causing floating dust to settle at the bottom of the primary cyclone separation chamber 113, while the separated gas enters the filter screen 12. The cyclone separation method ensures that dirt is primarily deposited at the bottom of the dust bin 111. When cleaning is required, the dust bin 111 can be emptied or the bottom cover opened, making cleaning easy and convenient, eliminating concerns about wasting consumables.

[0043] The secondary cone 13 is used to perform secondary cyclone separation on the airflow entering the filter screen 12 after cyclone separation in the dust bin 111, making the airflow entering the electric fan 142 cleaner. The secondary cone 13 includes a secondary cone barrel 131 and three secondary inlets 132 evenly arranged on the upper part of the secondary cone barrel 131. The airflow entering the filter screen 12 flows tangentially into the secondary cone barrel 131 through the secondary inlets 132, and the dust and air are separated by secondary cyclone centrifugal separation, causing smaller fine dust to fall to the bottom of the secondary cone barrel 131. The bottom of the secondary cone barrel 131 is open and is closed by the upper surface of the bottom of the dust bin 111 (bottom plate 111a). A hollow support barrel 133 is provided below the filter screen 12. This support barrel 133 not only supports the filter screen 12, but also serves as a dust collection chamber at the bottom of the secondary cone barrel 131 to collect fine dust.

[0044] The negative pressure source 14 is used to generate negative pressure to form an intake airflow. Its inlet faces the top of the secondary cone 13 and is connected to the secondary cone 13, and then to the inside of the filter screen 12. The negative pressure can be sequentially transmitted from the inside of the filter screen 12 to the primary cyclone separation chamber 113, the intake port 112, and the guide section 20. In this embodiment, the negative pressure source 14 is an electric fan unit 14. The electric fan unit 14 is located above the dust-air separation unit 20. The motor inlet of the electric fan unit 14 is sealed and connected to the secondary cone 13, and is used to agitate the air to generate an intake airflow, drawing suspended matter or dust from the external environment of the dust bin 111 into the cyclone separation section 10 for centrifugal separation through the guide channel 21. Figures 2-8 As shown, in this embodiment, the electric fan unit 14 includes a support plate 141, an electric fan 142, a power supply 143, an exhaust hood 144, a switch 145, and a charging port 146.

[0045] The support plate 141 is mounted on top of the dust bin 111 to support the electric fan 142. The support plate 141 has a through hole in the middle, through which the motor inlet is sealed and connected to the upper part of the secondary cone 13.

[0046] The electric fan 142 is mounted on the support plate 141, and the motor inlet draws in air that has been cleaned by the secondary cone 13. In order to extend the life of the electric fan 142, the controller can also make the electric fan 142 turn on intermittently, and when it stops, the electric fan 142 will automatically charge. After the power reaches the required level, it will turn on again for a period of time, and then the automatic control cycle of intermittent opening and closing can be repeated.

[0047] The power supply 143 is connected to the electric fan 142. In this embodiment, the power supply 143 is a rechargeable battery pack.

[0048] An exhaust hood 144 is mounted on a support plate 141, and multiple exhaust ports 144a connected to the outlet of the electric fan 142 are provided on the hood wall to discharge cleaned air from the air purifier 1000. In this invention, the exhaust direction of these exhaust ports can be directed in only one direction (e.g., parallel to the ground) or in different directions (e.g., at different angles to the ground). When the user moves the air purifier 1000 in the room, the air discharged from the exhaust ports can be blown in different directions to blow hair, particles, and other dirt from the surfaces of various furniture into floating dust, which is then easily sucked away by the airflow flowing towards the air intake channel 15. In this embodiment, the multiple exhaust ports 144a are evenly arranged around the outer periphery of the exhaust hood 144. A handle can be provided on the upper part of the exhaust hood 144 to facilitate the user to remove the upper part of the air purifier 1000 (the cyclone separator 10 outside the dust collection bin 111) through the handle during cleaning.

[0049] To remove the upper part of the air purifier 1000, first turn the handle to unlock the upper part of the air purifier 1000 from the dustbin 111, then lift the upper part of the air purifier 1000 to expose the dirt separated by the primary cone 11 and secondary cone 13 that has accumulated on the bottom plate 111a of the dustbin. The dirt can then be emptied by tilting the container, completing the cleaning process.

[0050] Switch 145 is installed on exhaust hood 144 and connected to electric fan 142 to control the operation of electric fan 142.

[0051] The charging port 146 is connected to the power supply 143 and is used to connect to an external power source to charge the power supply 143.

[0052] like Figures 1-12 As shown, the flow guide 20 is used to transfer negative pressure to the external environment to form airflow and guide suspended particles in the external environment into the inlet 112 with the airflow. Each flow guide 20 includes a flow channel 21 and a set of guardrails 22.

[0053] The guide channel 21 is used to form a guide air path, guiding suspended particles from the external environment into the intake port 112. Each guide channel 21 has a guide inlet 211 and a guide outlet 212 at its two ends. The guide inlet 211 is located on the outer surface of the air purifier 1000, upstream of the guide air path. The guide outlet 212 is located downstream of the guide air path and communicates with the intake port 112. In this embodiment, the number of intake ports 112 is equal to the number of guide channels 21, and both are at least three; the guide outlets 212 coincide with the intake ports 112.

[0054] The flow channel 21 also has a spiral segment 213 that spirals around the axis of the dustbin 111, and the spiral segment 213 is located between the flow inlet 211 and the flow outlet 212 of the flow channel 21. In this embodiment, as shown... Figure 10 As shown, the spiral segment 213 extends upstream from the suction inlet 112, rotates around the axis of the dust bin 111, and terminates at... Figure 10 In the section of pipe where the midpoint line is located, the spiral section 213 occupies more than 1 / 2 (approximately 3 / 4) of the length of the flow guiding channel 21. The upstream pipe section located upstream of the spiral section 213, extending downstream to the flow guiding inlet 211, extends in the opposite direction with a twist. The flow guiding channel 21 is generally S-shaped, and its cross-sectional area gradually decreases from the flow guiding inlet 211 to the flow guiding outlet 212. In this embodiment, both the flow guiding inlet 211 and the flow guiding outlet 212 are rectangular.

[0055] In this embodiment, as Figure 10As shown, the pipe segment extending upstream from the section marked by the dotted line is the trumpet segment 214, and the spiral segment 213 is the connecting segment. Let d1 be the minimum distance from the inner surface of the pipe wall near the dust bin 111 to the outer wall of the dust bin 111, and let d0 be the wall thickness of the connecting segment. Then d1 < d0, and d1 = 0. The wall of the dust bin 111 forms the pipe wall of the connecting segment. Further... Figures 6-8 As shown, the lower surface of the guide channel 21, similar to its two sides, is also S-shaped, forming a slope extending from bottom to top in an S-shape. The upper surface of the guide channel 21 is also S-shaped and is higher than the upper surface of the suction inlet 112 (or guide outlet 212). The distance of the difference is at least 1 / 4 of the vertical height of the suction inlet 112 (or guide outlet 212), thus providing a larger purification range in the vertical direction and making the dust and gas more stable. Furthermore, in this embodiment, the guide outlet 212 of each guide channel 21 is close to the side of the farthest end of the spiral section 213 of the adjacent guide channel 21, that is, the guide outlet 212 of each guide channel 21 is close to the junction of the spiral section 213 and the horn section 214 of the adjacent guide channel 21 and is closer to the side of the dust bin 111.

[0056] In the airflow path, let the path (airflow path) length from any point in the upper, middle, and lower regions of the airflow inlet 211 along the airflow channel 21 or airflow path to the airflow outlet 212 be La, Lb, and Lc, respectively. Then, La < Lb and La < Lc. Therefore, the pressure at the upper part of the airflow inlet 211 is the lowest, and the dust flow velocity is the highest. This allows the floating dust to be sucked into the airflow inlet 211 from a high position, instead of continuing to fall downwards, thus minimizing the fall of floating dust and greatly improving the speed and efficiency of floating dust purification.

[0057] Let the area of ​​the flow outlet 212 be S1, and the area of ​​the flow inlet 211 be S2, then S2:S1≥3; let the maximum height of the flow inlet 211 in the vertical direction (the opening extension dimension in the direction perpendicular to the ground) be L2, and the vertical height of the dust bin 111 be L3, then L2:L3≥1:2. In this embodiment, L2:L3≈1. Figure 11 As shown, L2 = AB or CD; let w2 be the maximum width of the guide inlet 211 in the direction perpendicular to the height (the opening extension dimension in the direction parallel to the ground), then L2 > w2, as shown. Figure 11 As shown, w2 = AD or BC. Let the maximum straight-line distance between any two points on the outer contour of the cross-section of the dustbin 111 be w3, then L2:w3 ≥ 1:2. In this embodiment, since the dustbin 111 is cylindrical, w3 is the outer diameter of the dustbin 111, and L2:w3 > 1. Let the height of the lower edge of the guide inlet 211 from the bottom plate 111a be h2, and the height of the lower edge of the guide outlet 212 from the bottom plate 111a be h1, then h2:h1 ≤ 1:3. Figure 11As shown, h2 = the distance from BC to EF. Specifically, in this embodiment, L2 ≥ 60cm, exceeding the height of an adult cat / dog. Further, let the vertical height of the main body of the air purifier 1000 (the air purifier 1000 after removing the moving part 40) be L4, then L2:L4 ≥ 1:2; let the maximum straight-line distance between any two points on the outer contour of the cross-section of the outer shell 30 surrounding the dustbin 111 in the air purifier 1000 be w4, then L2:w4 ≥ 1:2. In this embodiment, since the outer shell 30 is cylindrical, w4 is the outer diameter of the outer shell 30, w4 = 1 / 2EF. In this embodiment, as... Figure 11 As shown, after unfolding the outer shell 30, the flow inlet 211 is a rectangle whose length direction is parallel to the vertical direction. However, the flow inlet 211 in this invention is not limited to this; it can also be a rectangle whose length direction is inclined relative to the vertical direction, or other shapes, such as... Figure 12 As shown in (a), the maximum height of the inclined elongated oval flow inlet 211' is L2', and the maximum width is w2'; Figure 12 (b) The maximum height of the crescent-shaped airflow inlet 211'' is L2'', and the maximum width is w2''. In this utility model, "ground" refers to the support surface that provides stable support for the air purifier 1000 when it is running.

[0058] The guardrail 22 is used to protect the flow channel 21 and prevent pets or other large foreign objects from accidentally entering the flow inlet 211. In this embodiment, the guardrail 22 is a long, thin barrier that is spaced apart at the flow inlet 211. The guardrail 22 is a detachable structure. Alternatively, the flow channel 21 can also be a detachable structure.

[0059] The outer casing 30 is arranged around the cyclone separator 10 and three flow guides 20 to form the outer peripheral surface of the main body of the air purifier 1000, and the three flow guides 211 are evenly opened on the outer casing 30.

[0060] The movable part 40 is used to move the air purifier 1000 and includes a base 41, a slot 42 and a push rod 43.

[0061] The base 41 is located at the bottom of the dustbin 111 and includes a chassis 411, four rollers 412, and roller stops (not shown in the figure). The chassis 411 supports the cyclone separator 10 and all the air guides 20 and covers the bottom of the dustbin 111; that is, the bottom plate 111a is part of the chassis 411. The rollers 412 are installed below the chassis 411 for moving the air purifier 1000. The roller stops are connected to the rollers 412 to prevent the rollers 412 from moving, thus fixing the position of the air purifier 1000. When the roller stops are released, the user can push and pull the air purifier 1000 to move it freely, thereby entering more areas (e.g., different rooms) to extract floating dust. In addition, the base 41 can be equipped with an automatic driving mechanism, enabling the air purifier 1000 to automatically find its way, move, extract floating dust from a wide space to purify the air, and return to the charging station to recharge itself when the battery is low, or when it intermittently shuts down automatically or is manually stopped by the user. Similar automatic pathfinding and movement mechanisms are already widely used in robotic vacuum cleaners, and will not be elaborated on here.

[0062] The slot 42 is located on one side of the housing 30 for detachably connecting the fixed push rod 43.

[0063] The push rod 43 is used by the user to move the air purifier 1000 to the target location. The lower end of the push rod 43 is inserted into the side slot, and the upper part is equipped with a push handle. The push rod 43 is a telescopic structure, and the height of the push handle can be adjusted according to the user's needs, similar to a suitcase push rod.

[0064] like Figures 1-12 As shown, based on the above structure, the specific working process of the air purifier 1000 provided in this embodiment is as follows:

[0065] 1) Air purification

[0066] First, the air purifier 1000 is placed in the space containing the suspended particles to be purified. Then, the air purifier 1000 is turned on via switch 145, causing the electric fan 142 to generate negative pressure. This negative pressure is transmitted to the airflow inlet 211. At the airflow inlet 211, air from the external environment pushes suspended particles such as hair and other contaminants into the low-pressure airflow inlet 211, where they are accelerated along the airflow channel 21. The airflow then flows through the airflow outlet 212 into the suction inlet 112, and then tangentially into the dustbin 111. It then rotates downwards around the dustbin wall, where centrifugal separation of dust and air occurs. A large amount of contaminants are separated by centrifugation and accumulate at the bottom of the primary cyclone separator 113. The airflow then leaves the bottom of the primary cyclone separator 113 and rotates upwards into the filter screen 12. This allows for large-scale and efficient filtration of airborne suspended particles without the use of consumable filtration upstream of the negative pressure source 14.

[0067] Next, the airflow after primary separation is drawn into the secondary inlet 132 and flows tangentially into the secondary cone 131. Based on the same cyclone separation method, secondary dust and gas separation is carried out. Fine dust is separated and falls to the bottom of the secondary cone 131, and is then collected by the support barrel 133. The airflow rotates upward and flows from the top of the secondary cone 131 into the electric fan 142, and then is discharged from the exhaust hood 144.

[0068] When the air purifier 1000 needs to be moved to another room, the user can push and pull the air purifier 1000 by loosening the roller stop.

[0069] When you want to stop the purification process, you can turn off the electric fan by switching on switch 145.

[0070] 2) Clearance Sale

[0071] When it is necessary to clean the collected dirt, after turning off the machine by switching on switch 145, first turn and then lift the electric fan unit 14 by rotating and then lifting the upper part of the air purifier 1000 to expose the dirt separated by the first-stage cone 11 and the second-stage cone 13 accumulated on the bottom plate 111a. Then, tilt the dust bin 111 to pour the dirt out from the upper opening.

[0072] Alternatively, the bottom plate 111a can also be equipped with an openable and closable bottom cover. The opening button is located on the side of the dust bin 111. The dust bin 111 is placed on the base 41. When cleaning, the user can remove the dust bin 111 from the base 41 without tipping the dust bin 111. Instead, the user can open the bottom cover by pressing the opening button, allowing the dirt to be discharged downwards from the bottom cover opening.

[0073] 3) Charging

[0074] Users can manually stop the air purifier and then connect an external power source to charging port 146 via the power cord. Users can also set an automatic charging mode via the controller, causing the air purifier 1000 to automatically stop charging when the battery level drops below a target value and stop charging once fully charged. An intermittent charging mode can also be set via the controller, causing the air purifier 1000 to run for a predetermined time, then stop to charge, and then restart for air purification after a predetermined charging time. The air purifier 1000 can achieve air purification along a predetermined path and charge at designated locations using an automatic pathfinding system.

[0075] 4) Storage

[0076] Users can push the air purifier 1000 into a cabinet or corner using the push lever 43. Alternatively, users can set an automatic storage point via the controller, allowing the air purifier 1000 to automatically locate and store itself in a designated spot.

[0077] The above embodiments are merely illustrative examples of the technical solution of this utility model. The air purifier involved in this utility model is not limited to the content described in the above embodiments, but is subject to the scope defined by the claims. Any modifications, additions, or equivalent substitutions made by those skilled in the art based on these embodiments are within the scope of protection claimed by the claims of this utility model.

[0078] For example, in the above embodiments, the dustbin is cylindrical. In this invention, the shape of the dustbin (inner or outer surface) is not limited to this, and can also be arc-shaped, cubic, polyhedral, or other shapes (or composite shape structures such as polyhedrals containing arc surfaces).

[0079] In the above embodiments, the chassis covers the bottom of the dust bin, that is, the bottom plate of the bin is part of the chassis. This utility model is not limited to this. The bottom of the dust bin is independent of the chassis. The dust bin and all the flow guides can be separated from the chassis as a whole. Furthermore, the bottom of the dust bin is provided with a bottom cover that can be rotated outward to open the cover, thereby realizing the emptying and exposing the interior of the cyclone separator. This emptying method is simpler and easier to operate.

[0080] In the above embodiments, the electric fan is positioned above the dust bin. However, this invention is not limited to this. The electric fan can also be positioned to partially overlap with the dust bin, or located inside or below the dust bin.

[0081] In the above embodiments, the upper edge of the flow inlet is located below the electric fan. However, this utility model is not limited to this. The upper edge of the flow inlet can also be set to extend beyond the top of the electric fan (higher than the electric fan), or the upper edge of the flow inlet can extend beyond the upper edge of the dust bin (higher than the dust bin).

[0082] In the above embodiments, the number of inlets is equal to the number of guide channels, and there is a one-to-one correspondence between the inlets and guide channels. In the air purifier provided by this utility model, the number of inlets can be 1, and the guide outlets of all guide channels are converged and connected to the inlet. A dust baffle (deflector) is provided at the inlet to guide the airflow tangentially into the dust bin.

[0083] In the above embodiments, a rechargeable battery pack is used as the power source, and the battery pack can be charged with a conventional adapter. This invention can also employ a power cord assembly connected to an external power grid, allowing it to draw power from the grid after being connected / inserted. Alternatively, this invention can use a charging pin or wireless charging method for charging.

[0084] In the above embodiments, the slot is installed on one side of the outer casing for detachably connecting and fixing the push rod. In the air purifier provided by this utility model, the slot may also not be connected to the outer casing, but rather installed on the base.

[0085] In addition, in this invention, a soft or hard baffle can be installed at the flow inlet to adjust the size and opening direction of the flow inlet. Since there is a guardrail for support, a soft baffle is also suitable.

[0086] In addition, in this invention, the outline shape of the flow inlet can be any one or a combination of several of the following: circle, ellipse, oblong, polygon.

[0087] Furthermore, in this invention, the central axis of the guide channel can extend horizontally or obliquely, that is, the guide channel can spiral around the dustbin. Although the acceleration path is shorter and the floor area (projected area in the top view) is larger, the air passage of the guide channel is shorter. In addition, in this invention, when the guide channel spirals around the dustbin, it can also be away from the outer wall of the dustbin at a certain distance, d1>d0, but this will increase the floor area.

Claims

1. An air purifier, characterized in that, include: A cyclone separator includes: a dust bin for dust collection, at least one suction port disposed on the upper part of the dust bin, and a negative pressure source connected to the dust bin. At least two flow channels form a flow path that guides suspended particles from the external environment into the inlet. Each flow channel has a flow inlet located on the outer surface of the air purifier and upstream of the flow path, and a flow outlet located downstream of the flow path and connected to the inlet. Wherein, let the area of ​​the flow outlet be S1, and the area of ​​the flared mouth be S2, then S2:S1≥3; let the maximum height of the flow inlet in the vertical direction be L2, and the maximum height of the dustbin in the vertical direction be L3, then L2:L3≥1:2; let the maximum width of the flow inlet in the direction perpendicular to the height be w2, then L2>w2.

2. The air purifier according to claim 1, characterized in that: in, Let w3 be the maximum straight-line distance between any two points on the outer contour of the cross-section of the dust bin, then L2:w3≥1:

2. Let h2 be the height of the lower edge of the flow inlet from the bottom plate of the dust bin, and h1 be the height of the lower edge of the flow outlet from the bottom plate of the dust bin, then h2:h1≤1:

3.

3. The air purifier according to claim 2, characterized in that: in, L2>2×w2, S2: S1≥5, L2: w3≥1:1, h2: h1≤1:

5.

4. The air purifier according to claim 1, characterized in that: in, The number of suction ports is equal to the number of flow channels, and both are at least three; the suction ports are evenly spaced around the dust bin.

5. The air purifier according to claim 1, characterized in that: in, The flow channel has a spiral section extending around the axis of the dustbin, the spiral section being located between the flow inlet and the flow outlet of the flow channel.

6. The air purifier according to claim 1, characterized in that: in, The cross-sectional area of ​​the flow guiding channel gradually decreases from the flow guiding inlet to the flow guiding outlet.

7. The air purifier according to claim 1, characterized in that: in, The flow channel is configured such that, after the negative pressure source is turned on, the lowest pressure point on each cross-section from the flow inlet to the flow outlet is located at the geometric center of the corresponding cross-section; or, the flow channel includes a horn section having the flow inlet and a connecting section connecting the horn section and the suction port, and the flow channel is configured such that, after the negative pressure source is turned on, the lowest pressure point on each cross-section of the horn section is located at the geometric center of that cross-section.

8. The air purifier according to claim 1, characterized in that: in, In the guide gas path, let the gas path lengths from any point in the upper, middle, and lower regions of the guide inlet along the guide channel or guide gas path to the guide outlet be La, Lb, and Lc respectively. Then, La < Lb and La < Lc.

9. The air purifier according to claim 1, characterized in that: in, The flow channel includes: a horn section having the flow inlet, and a connecting section connecting the horn section to the suction inlet; let d1 be the minimum distance from the inner surface of section A in the connecting section to the outer wall of the dustbin, and d0 be the wall thickness of the connecting section, then d1≤d0; let L5 be the extension length of the connecting section, then section A is the connecting section extending from the flow outlet to at least 1 / 4×L5.

10. The air purifier according to claim 1, characterized in that: in, The air purifier also includes an outer casing surrounding the dustbin, and the air inlet is located on the outer casing; The cyclone separator also includes a secondary cone for secondary cyclone separation of the airflow after it has passed through the dust bin cyclone separator. The upper part of the secondary cone is provided with at least three secondary inlets.

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