Vacuum cleaner

Abstract

The utility model discloses a vacuum cleaner. The vacuum cleaner comprises a dust cup and a filtering device, the filtering device is arranged in the dust cup and comprises a first-stage cyclone filter and a second-stage cyclone filter which are communicated, the first-stage cyclone filter can rotate relative to the second-stage cyclone filter, the second-stage cyclone filter is located on the inner side of the first-stage cyclone filter, and the first-stage cyclone filter can rotate relative to the second-stage cyclone filter. The second-stage cyclone filter is arranged in the dust cup, at least part of the second-stage cyclone filter can extend out of the first-stage cyclone filter so as to be arranged in the dust cup in a suspended mode, and a second-stage dust discharging opening is formed in the part, extending out of the first-stage cyclone filter, of the second-stage cyclone filter. According to the technical scheme provided by the utility model, the cyclone filter can be better kept in a clean state and is not easy to block, the working efficiency is better, the time cost and the structure cost for cleaning the cyclone filter can be saved, and the working effect of the vacuum cleaner is better.

Description

Technical Field

[0001] This utility model relates to the technical field of cleaning tools, specifically to a vacuum cleaner. Background Technology

[0002] In some existing cleaning devices, the dust separation mechanism includes a cylindrical cyclone filter located inside the dust cup, with a ring-shaped filter screen on the filter surface. During cleaning, the airflow carrying contaminants enters the dust cup through the inlet and rotates around the cylindrical cyclone filter. The airflow, filtered by the cyclone filter screen, can then proceed to the next stage of filtration. However, when the cleaner draws in longer, fibrous materials (such as long hair or lint), the airflow causes the hair to rotate around the cyclone assembly due to the cyclone filter's mechanism. Over time, the longer hair can become entangled on the cyclone filter surface, clogging it and affecting its filtration efficiency. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the main purpose of this utility model is to provide a vacuum cleaner that solves the problem that hair and other filamentous objects are easily entangled on the surface of the cyclone filter of traditional cleaners, which leads to filter blockage and affects the normal operation of the cleaner.

[0004] To achieve the above objectives, this utility model proposes a vacuum cleaner, comprising:

[0005] Dust cup;

[0006] A filtration device, disposed within the dust cup, includes a primary cyclone filter and a secondary cyclone filter that are connected to each other. The primary cyclone filter is rotatable relative to the secondary cyclone filter. At least a portion of the secondary cyclone filter extends out from the primary cyclone filter and is suspended within the dust cup. The portion of the secondary cyclone filter extending out from the primary cyclone filter has a secondary dust discharge port.

[0007] Optionally, the end of the primary cyclone filter near the secondary dust outlet is suspended inside the dust cup to form a dust storage space between it and the dust cup.

[0008] Optionally, the primary cyclone filter is rotatably mounted on the secondary cyclone filter.

[0009] Optionally, the airflow entering the dust cup flows in a first direction, and the primary cyclone filter has a rotational stroke in the first direction.

[0010] Optionally, an air inlet is provided on one side of the dust cup, and the airflow entering the dust cup from the air inlet drives the primary cyclone filter to rotate.

[0011] Optionally, the primary cyclone filter is provided with a first blade group at the air inlet, and the airflow entering the dust cup from the air inlet can flow toward the first blade group to drive the primary cyclone filter to rotate.

[0012] Optionally, the first blade group includes a plurality of first blades arranged at circumferential intervals along the primary cyclone filter, each first blade extending along the axial direction of the primary cyclone filter; or, each first blade extending obliquely to the same side along the axial direction of the primary cyclone filter.

[0013] Optionally, the primary cyclone filter further includes a second blade group located at one end of the primary cyclone filter near the secondary dust discharge port.

[0014] Optionally, the second blade assembly includes a plurality of second blades, each second blade having a shape consistent with the shape of each first blade.

[0015] Optionally, the primary cyclone filter includes a filter support, the two ends of which are rotatably connected to the secondary cyclone filter along its axial direction.

[0016] Optionally, the first end of the filter support and the first end of the secondary cyclone filter are rotatably connected by a first bearing structure.

[0017] Optionally, the filter support includes a first annular portion at its first end, and the first bearing structure includes a plurality of first bearings at the first end of the secondary cyclone filter. The plurality of first bearings are arranged at intervals along the circumference of the secondary cyclone filter, and the first annular portion is sleeved on the outer peripheral side of the plurality of first bearings and makes rolling contact with the plurality of first bearings.

[0018] Optionally, the secondary cyclone filter includes:

[0019] A multi-cone filter structure is disposed on the inner side of the filter support and forms an axial stop fit with the first annular portion;

[0020] A cover plate is disposed at the first end of the multi-cone filter structure and abuts against both sides of the axial direction of the plurality of first bearings together with the multi-cone filter structure, and at least a portion of the cover plate is blocked at the end of the first annular portion.

[0021] Optionally, the secondary cyclone filter further includes a dust guiding chamber located at the dust collection end of the multi-cone filter structure, and the secondary dust discharge port located at the end of the dust guiding chamber away from the multi-cone filter structure.

[0022] Optionally, the filter bracket further includes a second annular portion sleeved on the outside of the dust guiding cavity, the second annular portion and the dust guiding cavity being rotatably connected by a second bearing structure.

[0023] Optionally, the dust guiding cavity is funnel-shaped; the second annular portion has a shielding section, a guiding section and a connecting section connected together, the shielding section and the connecting section both extend along the axial direction of the first-stage cyclone filter, the guiding section connects the shielding section and the connecting section and is inclined to fit the dust guiding cavity, and the connecting section is fixedly sleeved on the outside of the second bearing structure.

[0024] Optionally, a first set of blades is provided on the outer side of the shielding section, and a second set of blades is provided on the outer side of the connecting section; and / or,

[0025] At least a portion of the shielding section surrounds the outer periphery of the guide section.

[0026] Optionally, the second annular portion is provided with a first abutment portion, and the outer side of the dust guiding cavity is provided with a second abutment portion. The first abutment portion and the second abutment portion respectively abut against both sides of the second bearing structure along its axial direction.

[0027] Optionally, the second bearing structure includes a second bearing, which is sleeved on the outside of the dust guide cavity;

[0028] The first abutment includes a boss protruding from the inner side of the second annular portion, and the second abutment includes a detachable annular stop on the outer periphery of the dust guide cavity. The boss and the annular stop are respectively located at both ends of the second bearing along its axial direction.

[0029] Optionally, the annular stop is screwed to the dust guide cavity.

[0030] Optionally, the vacuum cleaner further includes a first seal disposed between the dust cup and the filter holder.

[0031] Optionally, the first end of the filter holder is located close to the dust cup and has a receiving groove on its outer periphery;

[0032] The first sealing element includes a brush element, which is disposed inside the dust cup and is at least partially accommodated in the receiving groove.

[0033] This utility model also provides a vacuum cleaner, comprising:

[0034] Dust cup;

[0035] A filtration device, disposed within the dust cup, includes a primary cyclone filter and a secondary cyclone filter that are connected to each other. The primary cyclone filter is rotatable relative to the secondary cyclone filter, and at least part of the secondary cyclone filter can extend out from the primary cyclone filter. The second end of the primary cyclone filter is suspended within the dust cup.

[0036] Optionally, at least a portion of the secondary cyclone filter extends beyond the second end of the primary cyclone filter, and a secondary dust discharge port is provided on the portion extending beyond the first end of the primary cyclone filter. The secondary dust discharge port is suspended inside the dust cup and forms a dust storage space between itself and the dust cup.

[0037] The technical solution provided by this utility model has the following beneficial effects:

[0038] The vacuum cleaner provided by this utility model includes a dust cup and a filter device. The filter device is located inside the dust cup. When the vacuum cleaner is cleaning, the airflow carrying dirt can enter the dust cup. After the first filtration by the primary cyclone filter, most of the dirt will remain in the dust cup. The airflow with residual dirt after filtration then enters the secondary cyclone filter for a second filtration. The residual dirt after the second filtration by the secondary cyclone filter can fall into the dust collection chamber of the secondary cyclone filter and be discharged through the secondary dust outlet of the secondary cyclone filter. Moreover, the primary cyclone filter is set in a... As the airflow entering the dust cup rotates around the outer surface of the primary cyclone filter, the rotation of the primary cyclone filter itself further reduces the velocity difference between the primary cyclone filter and the airflow, bringing it close to zero. This prevents filamentous materials like hair from becoming entangled on the outer surface of the primary cyclone filter, causing them to fall into the dust cup instead. This avoids the accumulation of dust that would otherwise be caused by entanglement, allowing the primary cyclone filter to maintain a cleaner state, reducing clogging and improving efficiency. It also saves time and structural costs associated with cleaning the cyclone filter, resulting in better vacuum cleaner performance. Furthermore, the secondary dust outlet is suspended within the dust cup, providing sufficient dust storage space between the outlet and the cup, preventing clogging and further ensuring the filtration efficiency of the secondary cyclone filter. Attached Figure Description

[0039] 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.

[0040] Figure 1A schematic diagram of an embodiment of a vacuum cleaner provided by this utility model;

[0041] Figure 2 for Figure 1 A cross-sectional structural diagram of the vacuum cleaner described herein;

[0042] Figure 3 for Figure 1 A cross-sectional structural schematic diagram of the filtration device described herein;

[0043] Figure 4 for Figure 3 A magnified structural diagram of detail A in the middle;

[0044] Figure 5 for Figure 3 A magnified structural diagram of detail B in the middle;

[0045] Figure 6 for Figure 1 An exploded structural diagram of the filtration device described herein.

[0046] Explanation of icon numbers:

[0047] 100-Vacuum cleaner; 1-Dust cup; 11-Dust cup cavity; 111-Air inlet; 12-Dust cup cover; 2-Filter device; 21-First stage cyclone filter; 211-Filter support; 2111-First annular part; 2111a-Receiving groove; 2112-Second annular part; 2112a-Shielding section; 2112b-Guide section; 2112c-Connecting section; 212-Filter screen; 213-First blocking part; 2131-Boss; 214-First blade group; 215-Second blade group; 22-Second stage cyclone filter; 221-Multi-cone filter structure; 2211-First positioning post; 2212-Extension; 222-Cover plate; 2221-Second positioning post; 223-Dust guide chamber; 224-Second stage dust discharge port; 225-Second blocking part; 2251-Annular stop; 226-Sealing plate; 3-First sealing element; 4-First bearing structure; 41-First bearing; 5-Second bearing structure; 51-Second bearing; 6-Fan.

[0048] The realization of the purpose, functional characteristics and excellent effects of this utility model will be further explained below in conjunction with specific embodiments and accompanying drawings. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0050] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0051] 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 meaning of "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.

[0052] This utility model provides a vacuum cleaner 100. For details, please refer to [link / reference needed]. Figures 1 to 3 In this embodiment, the vacuum cleaner 100 includes a dust cup 1 and a filter device 2. The filter device 2 is disposed in the dust cup 1 and includes a primary cyclone filter 21 and a secondary cyclone filter 22 that are connected to each other. The primary cyclone filter 21 can rotate relative to the secondary cyclone filter 22. The secondary cyclone filter 22 is located inside the primary cyclone filter 21 and can extend out of the primary cyclone filter 21 in a suspended manner in the dust cup 1. A secondary dust discharge port 224 is provided on the part of the secondary cyclone filter 22 that extends out of the primary cyclone filter 21.

[0053] In this embodiment, when the vacuum cleaner 100 is performing cleaning work, the airflow carrying dirt can enter the dust cup 1. After the first filtration by the primary cyclone filter 21, most of the dirt will remain in the dust cup 1. The airflow with residual dirt after filtration then enters the secondary cyclone filter 22 for a second filtration. The residual dirt after the second filtration by the secondary cyclone filter 22 can fall into the dust collection chamber of the secondary cyclone filter 22. When discharging, it can be discharged through the secondary dust discharge port 224 of the secondary cyclone filter 22. Moreover, the primary cyclone filter 21 is set to rotate, so when the air entering the dust cup 1... When the airflow rotates around the outer surface of the primary cyclone filter 21, the velocity difference between the primary cyclone filter 21 and the airflow is reduced to near zero due to the rotation of the primary cyclone filter 21 itself. Therefore, filamentous materials such as hair are less likely to become entangled on the outer surface of the primary cyclone filter 21 and instead fall into the dust cup 1. This also prevents the accumulation of dust after the filaments become entangled, allowing the primary cyclone filter 21 to maintain a cleaner state, reducing clogging and improving working efficiency. Furthermore, it saves time and structural costs associated with cleaning the cyclone filter, resulting in better performance of the vacuum cleaner 100. Moreover, the secondary dust outlet 224 is suspended within the dust cup 1, providing sufficient dust storage space between the secondary dust outlet 224 and the dust cup 1. This prevents the secondary dust outlet 224 from becoming clogged, further ensuring the filtration efficiency of the secondary cyclone filter 22.

[0054] The size and shape of the dust cup 1 are not specifically limited. Preferably, the dust cup 1 is generally cylindrical. In this utility model, combined with Figure 1 and Figure 2 As shown in the diagram, the dust cup 1 is axially positioned vertically. The dust cup 1 includes a dust cup cavity 11 and a dust cup cover 12 that covers the primary dust outlet of the dust cup cavity 11. Preferably, the primary dust outlet is located at the bottom of the dust cup cavity 11, and the dust cup cover 12 is rotatably positioned at the primary dust outlet to open and close it. The primary cyclone filter 21 is also generally cylindrical, and preferably, both the primary cyclone filter 21 and the secondary cyclone filter 22 are coaxially aligned with the dust cup 1. The secondary dust outlet 224 is located at the bottom of the secondary cyclone filter 22 and is positioned opposite to the primary dust outlet. Unless otherwise specified, all descriptions of orientation in this invention refer to the directions described above.

[0055] It is understandable that the primary cyclone filter 21 can be rotatably connected to the dust cup 1 and / or rotatably connected to the secondary cyclone filter 22, so that the primary cyclone filter 21 can rotate autonomously or passively, thereby preventing filamentous materials from getting tangled on it.

[0056] Preferably, the primary cyclone filter 21 is rotatably mounted on the secondary cyclone filter 22. The primary cyclone filter 21 and the secondary cyclone filter 22 are rotatably connected. This avoids vibration of the dust cup 1. In addition, during assembly, the primary cyclone filter 21 and the secondary cyclone filter 22 can be assembled first and then installed in the dust cup 1. The assembly operation space is not limited by the small internal space of the dust cup 1, so the assembly is more convenient and the assembly efficiency is higher.

[0057] Moreover, such as Figure 2 As shown, the end of the primary cyclone filter 21 near the secondary dust outlet 224, that is, the bottom end of the primary cyclone filter 21, is suspended inside the dust cup 1 to form a dust storage space between it and the dust cup 1. This ensures that the bottom of the primary cyclone filter 21 does not abut against the dust cup cover 12 or the inner wall of the dust cup 1. Therefore, no area that is easy for dirt to accumulate is formed on the primary cyclone filter 21, and it does not occupy too much internal space, making the storage space of the dust cup 1 larger.

[0058] It is understandable that when the airflow direction is opposite to the rotation direction of the primary cyclone filter 21, the velocity difference between the two will increase, thus accelerating the entanglement of filaments. Therefore, preferably, the airflow direction within the dust cup 1 should be consistent with the rotation direction of the primary cyclone filter 21.

[0059] Furthermore, the primary cyclone filter 21 can be driven by a drive component to rotate actively, or the primary cyclone filter 21 can be driven passively by manual operation.

[0060] Preferably, the primary cyclone filter 21 can rotate under the impetus of the airflow entering the dust cup 1, and the rotation directions of both are the same. Specifically, the airflow entering the dust cup 1 flows in a first direction, the primary cyclone filter 21 has a rotation stroke in the first direction, and an air inlet 111 is provided on one side of the dust cup 1. Under the action of the airflow entering the dust cup 1 through the air inlet 111, the primary cyclone filter 21 is driven to rotate, so that filamentous materials are not easily wrapped around the outer surface of the primary cyclone filter 21, and the rotation of the primary cyclone filter 21 itself will also throw off some of the dirt that falls on it, better ensuring cleanliness and avoiding blockage.

[0061] Among them, combined Figure 2 and Figure 6 As shown, the primary cyclone filter 21 is provided with a first blade group 214 at the corresponding air inlet 111. The airflow entering the dust cup 1 from the air inlet 111 can flow toward the first blade group 214 to drive the primary cyclone filter 21 to rotate. The airflow pushes the first blade group 214, which drives the primary cyclone filter 21 to rotate better.

[0062] Preferably, the first blade group 214 includes a plurality of first blades arranged circumferentially along the primary cyclone filter 21, each first blade extending axially along the primary cyclone filter 21; or, each first blade extends obliquely to the same side along the axial direction of the primary cyclone filter 21, inclined in the direction of airflow, so that the normal phase of each first blade is as parallel as possible to the direction of airflow, optimizing the driving effect of airflow on the blades. Preferably, the angle between the first blade and the axis of rotation of the primary cyclone filter 21 is less than 90°, preferably less than 45°, so that the primary cyclone filter 21 can still rotate better even when the airflow is very small.

[0063] Furthermore, such as Figure 6 As shown, the primary cyclone filter 21 also includes a second blade group 215. The second blade group 215 is located at one end of the primary cyclone filter 21 near the secondary dust discharge port 224, forming an auxiliary driving effect. Moreover, the first blade group 214 and the second blade group 215 are arranged at intervals along the axial direction of the primary cyclone filter 21, so that the force is more balanced and the primary cyclone filter 21 is more stable when rotating.

[0064] More preferably, the second blade group 215 includes a plurality of second blades, each second blade having the same shape as each first blade, so as to achieve the same optimized airflow propulsion effect on the blades.

[0065] Specifically, for the primary cyclone filter 21, the primary cyclone filter 21 includes a filter support 211 and a filter screen 212 disposed on the filter support 211. Preferably, it is combined with... Figure 2 and Figure 3 As shown, the filter support 211 is generally cylindrical, and its two ends along its axial direction are rotatably connected to the secondary cyclone filter 22. A perforated area is provided on the peripheral side of the filter support 211, and a filter screen 212 is positioned corresponding to this perforated area. Airflow flows from the outside of the filter screen 212 towards the inside of the filter screen 212, i.e., the center of the filter support 211, filtering and blocking out contaminants through the filter screen 212.

[0066] The first end of the filter bracket 211 and the first end of the secondary cyclone filter 22 are rotatably connected by a first bearing structure. The first end here specifically refers to the upper end, that is, the upper end of the filter bracket 211 and the upper end of the secondary cyclone filter 22 are rotatably connected by the first bearing structure, which makes the rotatable connection more stable and the rotation smoother.

[0067] Furthermore, combined Figure 3 and Figure 4As shown, the filter support 211 includes a first annular portion 2111 at its first end, and the first bearing structure 4 includes a plurality of first bearings 41 at the first end of the secondary cyclone filter 22. The plurality of first bearings 41 are arranged at intervals along the circumference of the secondary cyclone filter 22. The first annular portion 2111 is sleeved on the outer periphery of the plurality of first bearings 41 and makes rolling contact with the plurality of first bearings 41. Through the rolling fit between the plurality of first bearings 41 and the filter support 211, a line-surface fit is formed between the filter support 211 and each of the first bearings 41, resulting in less frictional resistance and smoother rotation during rotation.

[0068] Furthermore, in conjunction with the secondary cyclone filter 22, in conjunction with Figure 2 and Figure 3 As shown, the secondary cyclone filter 22 includes a multi-cone filter structure 221 and a cover plate 222. The multi-cone filter structure 221 is located inside the filter support 211 and forms an axial stop fit with the first annular portion 2111. The cover plate 222 is located at the first end of the multi-cone filter structure 221 and, together with the multi-cone filter structure 221, abuts against both sides of the plurality of first bearings 41 along the axial direction. At least a portion of the cover plate 222 is blocked at the end of the first annular portion 2111. The cover plate 222 and the multi-cone filter structure 221 restrict the position of the plurality of first bearings 41, and the multi-cone filter structure 221 and the cover plate 222 also restrict the position of the upper end of the filter support 211 along the axial direction of the dust cup 1.

[0069] Specifically, in combination Figure 4 and Figure 6 As shown, a plurality of first positioning posts 2211 are provided at the upper end of the multi-cone filter structure 221, and a plurality of second positioning posts 2221 are provided on the cover plate 222. Each second positioning post 2221 is provided with a positioning hole. The plurality of first positioning posts 2211 are inserted into the plurality of positioning holes one by one, and a plurality of first bearings 41 are sleeved on the outer side of the plurality of second positioning posts 2221 one by one. The surfaces of the first positioning posts 2211 and the surfaces of the second positioning posts 2221 are respectively pressed against the two ends of the first bearings 41 along their axial direction, thereby completely restricting the inner ring fixing ring of each first bearing 41, so that the outer ring moving ring of each first bearing 41 can roll in contact with the filter bracket 211.

[0070] Furthermore, the multi-cone filter structure 221 is provided with multiple first connection holes, and the cover plate 222 is provided with multiple second connection holes. The multiple first connection holes and multiple second connection holes are arranged one-to-one and are all fixedly connected by connectors such as screws and bolts. This makes the connection stability between the multi-cone filter structure 221 and the cover plate 222 better.

[0071] The multi-cone filter structure 221 includes multiple conical cylinders and multiple extensions 2212 protruding from a portion of the conical cylinders. Multiple first positioning posts 2211 protrude from a portion of the extensions 2212, and multiple first connecting holes protrude from the remaining extensions 2212. Preferably, the multiple first positioning posts 2211 and the multiple first connecting holes are staggered along the circumference of the secondary cyclone filter 22. The bottom wall of each extension 2212 connected to each conical cylinder extends radially inclined along the secondary cyclone filter 22. The first annular portion 2111 of the filter support 211 has a contact portion at the top and a transition portion connected to the contact portion. The contact portion has an annular structure extending axially. The shape of the inner surface of the transition portion is adapted to the shape of the bottom wall of the multiple extensions 2212 and is inclined towards the center of the filter support 211 in a top-to-bottom direction. The cover plate 222 is placed on the top of the dust cup 1 and is at least partially pressed against the top of the contact portion, thereby limiting the position of the filter bracket 211.

[0072] Furthermore, the vacuum cleaner 100 also includes a first seal 3, which is disposed between the dust cup 1 and the filter support 211 to prevent dirt in the dust cup 1 from leaking out from the gap between the filter support 211 and the dust cup 1.

[0073] Specifically, the first end of the filter holder 211 is positioned close to the dust cup 1, preferably in conjunction with... Figure 3 and Figure 4 As shown, a receiving groove 2111a is provided on the outer periphery of the connection between the contact part and the transition part; the first sealing member 3 includes a brush member, which is located inside the dust cup 1 and is at least partially received in the receiving groove 2111a, thereby blocking dirt and preventing dust from entering between the upper end of the primary cyclone filter 21 and the secondary cyclone filter 22 when the filter support 211 rotates, making it impossible to clean. Long-term accumulation will increase the rotational resistance of the primary cyclone filter 21 and may even cause it to jam in severe cases; moreover, the brush member can clean the primary cyclone transition device during its rotation.

[0074] In one embodiment, such as Figure 3 As shown, the secondary cyclone filter 22 also includes a dust guiding chamber 223, which is located at the dust collection end of the multi-cone filter structure 221. The secondary dust discharge port 224 is located at the end of the dust guiding chamber 223 away from the multi-cone filter structure 221. The larger ends of each cone face upwards to form air outlets. The vacuum cleaner 100 may also include a fan 6, whose inlet end is connected to the air outlet of each cone. Specifically, multiple air passage holes are provided on the cover plate 222, through which multiple air outlets and the fan 6 can be correspondingly connected. Figure 2The dashed arrows indicate the airflow direction. The small openings of each conical cylinder face downwards to form dust collection ports. Filter inlets are formed on the periphery of each conical cylinder. The airflow filtered by the primary cyclone filter 21 enters each conical cylinder through the filter inlets, and then undergoes secondary separation and filtration in each conical cylinder. This allows residual dirt to be separated and fall into the dust guide chamber 223 for collection from the dust collection ports, while clean airflow flows out from the air outlets of each conical cylinder, passes through multiple air passages on the cover plate 222, and enters the fan 6. The secondary dust discharge port 224 is located at the bottom of the dust collection chamber, and a sealing plate 226 can be installed at the secondary dust discharge port 224. When the vacuum cleaner 100 is cleaning, the sealing plate 226 is set to close the secondary dust discharge port 224. When the vacuum cleaner 100 is placed on the base station for dust collection, under the negative pressure of the base station, the sealing plate 226 can open the secondary dust discharge port 224, so that the dirt in the dust collection chamber can fall out and fall into the dust cup 1, which can be sucked out by the base station to achieve automatic cleaning of the dust cup 1.

[0075] The filter bracket 211 also includes a second annular portion 2112 sleeved on the outside of the dust guiding chamber 223. The second annular portion 2112 and the dust guiding chamber 223 are rotatably connected through a second bearing structure 5. The lower end of the filter bracket 211 is rotatably connected to the dust guiding chamber 223 through the second bearing structure 5, so that both the upper and lower ends of the filter bracket 211 can be stably rotatably connected to the two-stage cyclone filter structure.

[0076] Furthermore, combined Figure 3 and Figure 5As shown, the dust guiding chamber 223 is funnel-shaped. The flared end of the dust guiding chamber 223 is connected to the dust discharge ports of multiple conical cylinders. The constricted end of the dust guiding chamber 223 forms a secondary dust discharge port 224, so that the dirt falling into the dust guiding chamber 223 can flow better toward the secondary dust discharge port 224 under the guidance of the chamber wall of the dust guiding chamber 223. The second annular portion 2112 has a shielding section 2112a, a guide section 2112b, and a connecting section 2112c connected together. The shielding section 2112a, the guide section 2112b, and the connecting section 2112c are arranged sequentially from top to bottom. The shielding section 2112a and the connecting section 2112c both extend along the axial direction of the primary cyclone filter 21. The guide section 2112b connects the shielding section 2112a and the connecting section 2112c and is arranged in an inclined shape that is adapted to the dust guiding chamber 223, making the structure more compact and the dust storage space in the dust cup 1 larger. The connecting section 2112c is fixedly sleeved on the outside of the second bearing structure. The first blade group 214 is disposed on the shielding section 2112a, and the second blade group 215 is disposed on the outside of the connecting section 2112c. At least part of the shielding section 2112a surrounds the outer periphery of the guide section 2112b. This arrangement of the shielding section 2112a, guide section 2112b, and connecting section 2112c can extend the path that dust takes when passing through the gap, increase the difficulty of dust passing through, and better prevent dust from directly entering between the primary cyclone filter 21 and the secondary cyclone filter 22.

[0077] Moreover, such as Figure 5 As shown, a first abutment 213 is provided on the second annular portion 2112, and a second abutment 225 is provided on the outside of the dust guiding chamber 223. The first abutment 213 and the second abutment 225 respectively abut against both sides of the second bearing structure 5 along its axial direction. The first abutment 213 abuts against the upper end of the second bearing structure 5, and the upper end of the filter support abuts against the lower end of the cover plate 222. Therefore, both ends of the filter bracket 211 along its axial direction are restricted, which can better ensure the position of the filter bracket 211.

[0078] The second bearing structure 5 includes a second bearing 51, which is sleeved on the outside of the dust guiding cavity 223. A connecting section 2112c is fixedly sleeved on the outside of the second bearing 51 and forms an interference fit with the outer periphery of the second bearing 51. The first abutment 213 includes a boss 2131 protruding from the inner side of the second annular portion 2112. The second abutment 225 includes a detachable annular stop 2251 located on the outer periphery of the dust guiding cavity 223. The boss 2131 and the annular stop 2251 are respectively located at both ends of the second bearing 51 along its axial direction. The annular stop 2251 detachably connects to the dust guiding cavity 223, thus facilitating the assembly and disassembly of the second bearing 51 and the primary cyclone filter 21.

[0079] Preferably, the annular stop 2251 is screwed to the dust guide cavity 223. The outer peripheral side of the secondary dust discharge port 224 of the dust guide cavity 223 is provided with external threads, and the inner ring side of the annular stop 2251 is provided with internal threads. The annular stop 2251 can be disassembled and assembled by screwing on it. The structure is simple and the operation is convenient.

[0080] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structure made using the contents of the present utility model specification and drawings, or directly or indirectly applied to other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A vacuum cleaner (100), characterized by The dust cup (1) comprises: A filtering device (2) arranged in the dust cup (1) and comprising a first cyclone filter (21) and a second cyclone filter (22) connected in series, the first cyclone filter (21) being rotatable relative to the second cyclone filter (22), and the second cyclone filter (22) being at least partially extendable from the first cyclone filter (21) to be suspended in the dust cup (1), wherein a second dust outlet (224) is formed on the part of the second cyclone filter (22) extending from the first cyclone filter (21). The end of the first cyclone filter (21) close to the second dust outlet (224) is suspended in the dust cup (1) to form a dust storage space with the dust cup (1).

2. The vacuum cleaner (100) of claim 1, wherein, The first cyclone filter (21) is rotatably arranged on the second cyclone filter (22).

3. The vacuum cleaner (100) of claim 1, wherein, The airflow entering the dust cup (1) flows in a first direction, and the first cyclone filter (21) has a rotation stroke in the first direction.

4. The vacuum cleaner (100) of claim 1, wherein, The dust cup (1) is provided with an air inlet (111) on one side, and the airflow entering the dust cup (1) from the air inlet (111) drives the first cyclone filter (21) to rotate.

5. The vacuum cleaner (100) of claim 4, wherein, The first cyclone filter (21) is provided with a first blade group (214) corresponding to the air inlet (111), and the airflow entering the dust cup (1) from the air inlet (111) can flow towards the first blade group (214) to drive the first cyclone filter (21) to rotate.

6. The vacuum cleaner (100) of claim 5, wherein, The first blade group (214) comprises a plurality of first blades arranged at intervals in the circumferential direction of the first cyclone filter (21), and each first blade is arranged in the axial direction of the first cyclone filter (21); or each first blade is arranged in the axial direction of the first cyclone filter (21) and inclined towards the same side.

7. The vacuum cleaner (100) of claim 6, wherein, The first cyclone filter (21) further comprises a second blade group (215) located at the end of the first cyclone filter (21) close to the second dust outlet (224).

8. The vacuum cleaner (100) of claim 7, wherein, The second blade group (215) comprises a plurality of second blades, and the shape of each second blade is consistent with the shape of each first blade.

9. The vacuum cleaner (100) of claim 8, wherein, The first cyclone filter (21) comprises a filtering support (211), and the two ends of the filtering support (211) in the axial direction are respectively rotatably connected with the second cyclone filter (22).

10. The vacuum cleaner (100) of claim 1, wherein, The first end of the filtering support (211) and the first end of the second cyclone filter (22) are rotatably connected by a first bearing structure (4).

11. The vacuum cleaner (100) of claim 10, wherein, ​ 12. The vacuum cleaner (100) of claim 11, wherein, The filter support (211) comprises a first annular portion (2111) arranged at a first end thereof, and the first bearing structure (4) comprises a plurality of first bearings (41) arranged at a first end of the secondary cyclone filter (22), the first bearings (41) being spaced apart along a circumferential direction of the secondary cyclone filter (22), and the first annular portion (2111) is arranged on an outer circumferential side of the first bearings (41) and in rolling contact with the first bearings (41).

13. The vacuum cleaner (100) of claim 12, wherein, The secondary cyclone filter (22) comprises: a multi-cone filter structure (221) arranged on an inner side of the filter support (211) and in axial abutting contact with the first annular portion (2111); a cover plate (222) arranged at a first end of the multi-cone filter structure (221) and abutting the multi-cone filter structure (221) on both sides of the first bearings (41) in the axial direction, at least a portion of the cover plate (222) being arranged on an end portion of the first annular portion (2111).

14. The vacuum cleaner (100) of claim 13, wherein, The secondary cyclone filter (22) further comprises a dust guide cavity (223) arranged at a dust falling end of the multi-cone filter structure (221), and the secondary dust outlet (224) is arranged at an end of the dust guide cavity (223) away from the multi-cone filter structure (221).

15. The vacuum cleaner (100) of claim 14, wherein, The filter support (211) further comprises a second annular portion (2112) arranged on an outer side of the dust guide cavity (223), and the second annular portion (2112) and the dust guide cavity (223) are rotationally connected by a second bearing structure (5).

16. The vacuum cleaner (100) of claim 15, wherein, The dust guide cavity (223) is funnel-shaped, and the second annular portion (2112) has a shielding segment (2112a), a guide segment (2112b) and a connecting segment (2112c) connected with each other, the shielding segment (2112a) and the connecting segment (2112c) are arranged along the axial direction of the primary cyclone filter (21), the guide segment (2112b) connects the shielding segment (2112a) and the connecting segment (2112c) and is arranged in an inclined shape matching the dust guide cavity (223), and the connecting segment (2112c) is fixedly arranged on an outer side of the second bearing structure (5).

17. The vacuum cleaner (100) of claim 16, wherein, An outer side of the shielding segment (2112a) is provided with a first vane group (214), and an outer side of the connecting segment (2112c) is provided with a second vane group (215); and / or, At least a portion of the shielding segment (2112a) is arranged on an outer circumferential side of the guide segment (2112b).

18. The vacuum cleaner (100) of claim 15, wherein, The second annular portion (2112) is provided with a first abutting portion (213), and an outer side of the dust guide cavity (223) is provided with a second abutting portion (225), the first abutting portion (213) and the second abutting portion (225) abut on both sides of the second bearing structure (5) in the axial direction, respectively.

19. The vacuum cleaner (100) of claim 18, wherein, The second bearing structure (5) comprises a second bearing (51) arranged on an outer side of the dust guide cavity (223). The first stop portion (213) comprises a boss (2131) protruding inside the second annular portion (2112), and the second stop portion (225) comprises a detachable annular stopper (2251) arranged on the outer circumferential side of the dust guide cavity (223), and the boss (2131) and the annular stopper (2251) are arranged at two ends of the second bearing (51) along the axial direction of the second bearing (51) respectively.

20. The vacuum cleaner (100) of claim 19, wherein, The annular stopper (2251) is screwed with the dust guide cavity (223).

21. The vacuum cleaner (100) of claim 10, wherein, The vacuum cleaner (100) further comprises a first sealing member (3) arranged between the dust cup (1) and the filter support (211).

22. The vacuum cleaner (100) of claim 21, wherein, The first end of the filter support (211) is arranged close to the dust cup (1) and is provided with a receiving groove (2111a) on the outer circumferential side. The first sealing member (3) comprises a brush member arranged inside the dust cup (1) and at least partially arranged in the receiving groove (2111a).

23. A vacuum cleaner (100) characterised in that, Comprise: a dust cup (1); a filter device (2) arranged in the dust cup (1) and comprising a first-stage cyclone filter (21) and a second-stage cyclone filter (22) connected in communication, the first-stage cyclone filter (21) being rotatable relative to the second-stage cyclone filter (22), and the second-stage cyclone filter (22) being at least partially extendable from the first-stage cyclone filter (21), wherein a second end of the first-stage cyclone filter (21) is arranged in suspension in the dust cup (1).

24. The vacuum cleaner (100) of claim 23, wherein, At least a part of the second-stage cyclone filter (22) extends from the second end of the first-stage cyclone filter (21), and a second-stage dust discharge port (224) is arranged on the part of the second-stage cyclone filter (22) extending from the first end of the first-stage cyclone filter (21), the second-stage dust discharge port (224) being arranged in suspension in the dust cup (1) and forming a dust storage space with the dust cup (1).

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