Vacuum cleaner
By designing a rotating cyclone filter structure in the vacuum cleaner, the problem of tangled filaments in the cyclone filter is solved, achieving more efficient filtration and assembly, and ensuring cleaning effect.
Patent Information
- Application Number
- CN202520243312.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-14
AI Technical Summary
Traditional cleaners' cyclone filters are prone to getting tangled with hair and other filaments, causing filter blockage and affecting cleaning efficiency.
A vacuum cleaner was designed, which uses a filtration device in the dust cup, including a primary cyclone filter and a secondary cyclone filter. The primary cyclone filter is rotatably sleeved on the outside of the secondary cyclone filter and is rotatably connected by a lower bearing structure to restrict its downward movement. Combined with the upper bearing structure to restrict its upward movement, it ensures smooth rotation.
It effectively prevents filaments from tangling, keeps the filter surface clean, improves filtration efficiency, reduces the need for rotational drive force, and simplifies the assembly process.
Smart Images
Figure CN223773648U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of cleaning tools, and particularly relates to a vacuum cleaner. BACKGROUND
[0002] The dust separating device of some cleaners in the prior art comprises a cylindrical cyclone filter located in a dust cup, and the surface of the filter is provided with a filter screen in the form of a ring. When the cleaner is working, the airflow with dirt sucked in enters the dust cup through the air inlet on the dust cup and rotates around the cylindrical cyclone filter, at which time the airflow filtered by the filter screen of the cyclone filter can enter the next stage of filtration. However, when the cleaner sucks in some long filamentary objects (such as long hair or wool strips), the airflow drives the hair to rotate around the cyclone assembly due to the principle of the cyclone filter, and after a long time, the long hair will be entangled on the surface of the cyclone filter, causing the cyclone filter to be blocked and affecting the efficiency of dust suction and filtration. SUMMARY
[0003] In order to solve the above technical problems, the main purpose of the utility model is to provide a vacuum cleaner, which aims to solve the problem that the surface of the cyclone filter of the conventional cleaner is easily entangled with filamentary objects such as hair, causing the filter to be blocked and affecting the normal work of the cleaner.
[0004] In order to achieve the above purpose, the utility model provides a vacuum cleaner, which comprises:
[0005] a dust cup;
[0006] a filtering device arranged in the dust cup and comprising a primary cyclone filter and a secondary cyclone filter, the primary cyclone filter being rotatably sleeved on the outside of the secondary cyclone filter, and the rotation axis of the primary cyclone filter being arranged to extend in the up-down direction, wherein the bottom end of the primary cyclone filter is rotatably connected to the secondary cyclone filter through a lower bearing structure, and the primary cyclone filter is limited from moving downward by the lower bearing structure.
[0007] Optionally, the primary cyclone filter is arranged in interference fit with the lower bearing structure.
[0008] Optionally, the lower bearing structure comprises a lower bearing, the lower bearing being sleeved on the bottom end of the secondary cyclone filter, and the primary cyclone filter being fixedly sleeved on the outside of the lower bearing.
[0009] Optionally, the lower bearing structure further comprises a limiting piece, the limiting piece being abutted and limited at the bottom end of the lower bearing.
[0010] Optionally, the limiting piece comprises a limiting ring, and the limiting ring is screwed on the lower end of the secondary cyclone filter.
[0011] Optionally, the primary cyclone filter further comprises a stop portion, which forms a stop fit with the upper end of the lower bearing.
[0012] Optionally, the upper end of the primary cyclone filter is rotatably connected to the secondary cyclone filter through an upper bearing structure.
[0013] Optionally, the upper end of the primary cyclone filter forms a stop fit with the upper bearing structure to limit upward displacement of the primary cyclone filter.
[0014] Optionally, the upper bearing structure comprises an extension portion and an upper bearing arranged on the extension portion.
[0015] The primary cyclone filter comprises a contact portion and an abutment portion, the abutment portion forms a stop fit with the extension portion to limit upward movement of the primary cyclone filter, and the contact portion is annularly arranged outside the upper bearing and forms a rolling fit with the upper bearing.
[0016] Optionally, the bottom surface of the extension portion is arranged in an inclined manner, and the top surface of the abutment portion is arranged in an inclined manner matching the bottom surface of the extension portion.
[0017] Optionally, a plurality of extension portions are arranged, the plurality of extension portions are arranged at intervals along the circumference of the secondary cyclone filter, a plurality of upper bearings are arranged, the plurality of upper bearings are arranged one by one on the plurality of extension portions, and the contact portion is annularly arranged outside the plurality of upper bearings and is in rolling contact with the plurality of upper bearings.
[0018] Optionally, a sealing member is arranged between the dust cup and the contact portion and / or the abutment portion.
[0019] Optionally, the secondary cyclone filter comprises a multi-cone filter structure and a cover plate, a plurality of extension portions are arranged outside the multi-cone filter structure, and the cover plate is arranged on the top end of the multi-cone filter structure and is limited by the multi-cone filter structure at both ends of the plurality of upper bearings.
[0020] Optionally, a first positioning column is arranged on each extension portion, a plurality of second positioning columns are arranged on the cover plate, a positioning hole is arranged on each second positioning column, the plurality of first positioning columns are inserted one by one into the plurality of positioning holes, and the plurality of upper bearings are arranged one by one outside the plurality of second positioning columns.
[0021] Optionally, at least part of the cover plate is crimped on the top end of the contact portion.
[0022] The utility model further provides a vacuum cleaner, which comprises:
[0023] a dust cup;
[0024] A filtering device is arranged in the dust cup and comprises a primary cyclone filter and a secondary cyclone filter, the upper end of the primary cyclone filter is rotatably connected with the secondary cyclone filter through an upper bearing structure, the lower end of the primary cyclone filter is rotatably connected with the secondary cyclone filter through a lower bearing structure, and the upper bearing structure and the lower bearing structure can respectively limit the displacement of the primary cyclone filter in the up-down direction.
[0025] Optionally, the bottom of the dust cup is formed with a primary dust discharging port, the secondary cyclone filter is provided with a secondary dust discharging port, the secondary dust discharging port can extend from the bottom of the primary cyclone filter and is arranged in opposite spacing with the primary dust discharging port.
[0026] Optionally, one side of the dust cup is provided with an air inlet, the air inlet is arranged towards one side of the dust cup, so that the airflow entering the dust cup can rotate in the first direction.
[0027] Optionally, the outer circumferential side of the primary cyclone filter is provided with a plurality of first blades.
[0028] The plurality of first blades are arranged in extension along the axial direction of the primary cyclone filter; or,
[0029] The plurality of first blades are arranged in inclination along the same side of the axial direction of the primary cyclone filter, and the rotation direction of the plurality of first blades is consistent with the first direction.
[0030] Optionally, the primary cyclone filter further comprises a plurality of second blades, and the shape of the plurality of second blades is consistent with the shape of the plurality of first blades.
[0031] The technical scheme provided by the utility model has the following beneficial effects:
[0032] The vacuum cleaner provided by the utility model, comprising a dust cup and a filtering device, the filtering device is arranged in the dust cup, when the vacuum cleaner is normally cleaning, the airflow mixed with dirt enters the vacuum cleaner under the suction of the dust suction port of the vacuum cleaner, after entering the dust cup from the air inlet of the dust cup, the airflow is firstly filtered by the first cyclone filter for the first time, most of the dirt can be filtered by the first cyclone filter and remain in the dust cup, the airflow mixed with some fine dust is filtered by the second cyclone filter for the second time, the fine dust is separated from the airflow and falls into the dust falling cavity of the second cyclone filter, and the clean airflow can flow out of the second cyclone filter and enter the suction device (such as a fan) of the vacuum cleaner, so that the dirt is completely remained in the dust cup, and the better cleaning effect is ensured; the first cyclone filter is rotatably arranged outside the second cyclone filter, when the hair and other filamentous materials enter the dust cup, the filamentous materials are not easy to wind outside the first cyclone filter, the outer surface of the first cyclone filter is cleaner, the first cyclone filter is not easy to be blocked, and the better filtering effect is maintained; the first cyclone filter and the second cyclone filter are rotatably connected through the lower bearing structure and are limited, the first cyclone filter is more smooth when rotating, the rotating driving force required is smaller, the first cyclone filter and the second cyclone filter can be assembled first and then installed in the dust cup, therefore, the assembling operation is not limited by the space in the dust cup, and the assembling efficiency is higher. BRIEF DESCRIPTION OF DRAWINGS
[0033] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained from the structure shown in these drawings without creative labor.
[0034] Figure 1 It is an embodiment of the structure schematic diagram of the vacuum cleaner provided by the utility model;
[0035] Figure 2 It is Figure 1 It is the sectional structure schematic diagram of the vacuum cleaner described in the embodiment;
[0036] Figure 3 It is Figure 1 It is the sectional structure schematic diagram of the filtering device described in the embodiment;
[0037] Figure 4 It is Figure 3 It is the enlarged structure schematic diagram of the detail A in the embodiment;
[0038] Figure 5For Figure 3 Enlarged structural schematic view of detail A;
[0039] Figure 6 For Figure 1 Structural schematic view of the filter device in the middle;
[0040] Figure 7 For Figure 6 Structural schematic view of the filter device from another perspective in the middle;
[0041] Figure 8 For Figure 1 Exploded structural schematic view of the filter device in the middle.
[0042] Brief Description of the Drawings:
[0043] 100 - vacuum cleaner; 1 - dust cup; 11 - dust cup cavity; 111 - air inlet; 12 - dust cup cover; 2 - filter device; 21 - first cyclone filter; 211 - filter support; 2111 - contact part; 2112 - abutment part; 2111a - accommodating groove; 212 - filter screen; 213 - stop part; 2131 - boss; 214 - first blade; 215 - second blade; 22 - second cyclone filter; 221 - multi-cone filter structure; 2211 - first positioning column; 2212 - extension part; 222 - cover plate; 2221 - second positioning column; 223 - dust guide cavity; 224 - second dust outlet; 225 - limiting piece; 2251 - limiting ring; 226 - sealing plate; 3 - sealing piece; 4 - upper bearing structure; 41 - upper bearing; 5 - lower bearing structure; 51 - lower bearing; 6 - fan.
[0044] The implementation, functional features and excellent effects of the present application will be further described below in combination with specific embodiments and drawings. DETAILED DESCRIPTION
[0045] The technical solutions in the embodiments of the present application will be apparently and completely described in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.
[0046] It should be noted that if the present application embodiments involve directional indications, the directional indications are only used to explain the relative position relationship, movement condition and the like between components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.
[0047] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.
[0048] The utility model provides a kind of vacuum cleaner 100, specifically, please refer to Figures 1 to 3 In the embodiment, the vacuum cleaner 100 includes a dust cup 1 and a filter device 2, the filter device 2 is arranged in the dust cup 1, and includes a primary cyclone filter 21 and a secondary cyclone filter 22, the primary cyclone filter 21 is rotatably arranged outside the secondary cyclone filter 22, and the rotation axis of the primary cyclone filter 21 is arranged along the up-down direction, wherein the bottom end of the primary cyclone filter 21 is rotatably connected to the secondary cyclone filter 22 through a lower bearing structure 5, and the primary cyclone filter 21 is limited to move downward by the lower bearing structure 5.
[0049] In the embodiment, when the vacuum cleaner is working normally, the air flow mixed with dirt enters the vacuum cleaner 100 under the suction of the suction port of the vacuum cleaner 100, enters the dust cup 1 from the air inlet 111 of the dust cup 1, is filtered for the first time by the first cyclone filter 21, so that most of the dirt can be filtered by the first cyclone filter 21 and remain in the dust cup 1, and the air flow mixed with part of the fine dust is filtered for the second time by the second cyclone filter 22, so that the dust and the air flow are completely separated, the fine dust separated by the second cyclone filter 22 falls into the dust falling cavity of the second cyclone filter 22, and the clean air flow can flow out of the second cyclone filter 22 to enter the suction device (such as the fan 6) of the vacuum cleaner 100, so that the dirt is completely retained in the dust cup 1, and a better cleaning effect is ensured. Furthermore, the first cyclone filter 21 is rotatably sleeved outside the second cyclone filter 22, and the rotation of the first cyclone filter 21 can prevent the silk-like material such as hair from winding outside the first cyclone filter 21 when the silk-like material enters the dust cup 1, so that the outer surface of the first cyclone filter 21 is cleaner and is less likely to be blocked, and a better filtering effect is maintained. Furthermore, the first cyclone filter 21 and the second cyclone filter 22 are rotatably connected by the lower bearing structure 5 and are limited, so that the first cyclone filter 21 rotates more smoothly, the driving force required for rotation is smaller, and the first cyclone filter 21 and the second cyclone filter 22 can be assembled first and then installed in the dust cup 1, so that the assembly operation is not limited by the space in the inner cavity of the dust cup 1, and the assembly efficiency is higher.
[0050] It should be noted that, in combination with the description in the Figure 2 When the vacuum cleaner 100 works normally, the axial direction of the dust cup 1 is arranged along the up-down direction, and the axial directions of the first cyclone filter 21 and the second cyclone filter 22 also extend along the up-down direction. Preferably, the dust cup 1 is arranged in a substantially cylindrical shape, the rotation axis of the first cyclone filter 21 is consistent with the axial direction of the dust cup 1, and further preferably, the rotation axis of the first cyclone filter 21 is the central axis thereof, and the first cyclone filter 21 and the second cyclone filter 22 are coaxially arranged with the dust cup 1. When the axial direction of the dust cup 1 changes, the axial directions of the first cyclone filter 21 and the second cyclone filter 22 also change correspondingly to remain consistent with the axial direction of the dust cup 1. In the present application, the description of the relative position can be referred to the above description unless otherwise specified.
[0051] For example, Figure 3As shown in Figs. 1-2, the lower end of the primary cyclone filter 21 is rotatably connected with the secondary cyclone filter 22 through the lower bearing structure 5, and the primary cyclone filter 21 can be limited by the lower bearing structure 5, so as to avoid moving downward relative to the secondary cyclone filter 22 under the action of its own gravity. Preferably, the primary cyclone filter 21 is arranged in an interference fit with the lower bearing structure 5, so that the connection between the primary cyclone filter 21 and the lower bearing structure 5 is more reliable and stable, and the relative position of the primary cyclone filter 21 and the lower bearing structure 5 can be better ensured.
[0052] Further, as shown in Figs. 1-2, Figure 3 and Figure 5 the lower bearing structure 5 comprises a lower bearing 51, the lower bearing 51 is sleeved on the bottom end of the secondary cyclone filter 22, and the primary cyclone filter 21 is fixedly sleeved on the outside of the lower bearing 51. It can be understood that the lower bearing 51 has a bearing inner ring and a bearing outer ring, the bearing inner ring is fixedly sleeved on the outside of the secondary cyclone filter 22, and the bearing outer ring is fixedly sleeved on the inside of the primary cyclone filter 21, so that the primary cyclone filter 21 can better rotate relative to the secondary cyclone filter 22.
[0053] Moreover, the lower bearing structure 5 further comprises a limiting piece 225, the limiting piece 225 abuts and limits the lower end of the lower bearing 51, so as to limit the downward movement of the lower bearing 51 relative to the secondary cyclone filter 22, and better limit the position of the primary cyclone filter 21.
[0054] Preferably, as shown in Figs. 1-2, Figure 3 and Figure 5 the limiting piece 225 comprises a limiting ring 2251, the limiting ring 2251 is screwed on the lower end of the secondary cyclone filter 22. The limiting ring 2251 is substantially annular, and has an internal thread on the inside thereof. An external thread is arranged on the outer circumferential side of the secondary cyclone filter 22, the limiting ring 2251 can be sleeved on the secondary cyclone filter 22 from the bottom thereof and screwed with the secondary cyclone filter 22, so as to abut the bottom end of the lower bearing 51 in the axial direction thereof. It can be understood that the arrangement mode of the limiting piece 225 includes but is not limited to the above-mentioned mode, and in other embodiments, the limiting piece 225 can also be arranged as a limiting protrusion, a limiting convex, or an elastic limiting piece, etc. However, by the screwing mode of the limiting ring 2251, the disassembly of the limiting ring 2251 is more convenient, and the assembly of the primary cyclone filter 21 and the secondary cyclone filter 22 is also more convenient.
[0055] In addition, as shown in Figs. 1-2, Figure 5As shown in the figures, the primary cyclone filter 21 further comprises a stop portion 213 which forms a stop fit with the upper end of the lower bearing 51, so as to further limit the downward movement of the primary cyclone filter 21 relative to the lower bearing 51, and to further ensure the position of the primary cyclone filter 21. The stop portion 213 comprises a boss 2131 protruding from the inner side of the bottom end of the primary cyclone filter 21, which is press-fitted to the upper end of the lower bearing 51 along the axial direction thereof, and the limit ring 2251 abuts against the upper end of the lower bearing 51 along the axial direction thereof, so that the primary cyclone filter 21 cannot move downward relative to the bearing and relative to the secondary cyclone filter 22, and the position of the primary cyclone filter 21 in the dust cup 1 is more accurate and stable.
[0056] The upper end of the primary cyclone filter 21 is also rotatably connected to the secondary cyclone filter 22, and the rotatable connection at both ends makes the rotation of the primary cyclone filter 21 more stable. Preferably, the upper end of the primary cyclone filter 21 is rotatably connected to the secondary cyclone filter 22 through the upper bearing structure 4, so that the rotation of the primary cyclone filter 21 is smoother.
[0057] Moreover, the upper end of the primary cyclone filter 21 forms a stop fit with the upper bearing structure 4 to limit the upward displacement of the primary cyclone filter 21, and the upward movement of the primary cyclone filter 21 is limited by the upper bearing structure 4, and the downward movement of the primary cyclone filter 21 is limited by the lower bearing structure 5, so as to completely limit the relative position of the primary cyclone filter 21 and the secondary cyclone filter 22.
[0058] In an embodiment, the upper bearing structure 4 can be arranged in the same way as the lower bearing structure 5, so as to be more convenient to manufacture. However, since the upper end of the secondary cyclone filter 22 is the air outlet end, the required air outlet space is relatively large, so the upper bearing structure 4 needs to be arranged to be relatively large, which is not easy to install and has high cost.
[0059] Preferably, the upper bearing structure 4 is arranged in combination with the lower bearing structure 5. Figure 3 and Figure 6As shown, the upper bearing structure 4 can be formed on the circumferential side of the secondary cyclone filter 22, and specifically, the upper bearing structure 4 comprises an extension portion 2212 and an upper bearing 41 arranged on the extension portion 2212; the primary cyclone filter 21 comprises a contact portion 2111 and an abutting portion 2112, the abutting portion 2112 is in abutting cooperation with the extension portion 2212 to limit the upward movement of the primary cyclone filter 21; and the contact portion 2111 is annularly arranged on the outer side of the upper bearing 41 and is in rolling cooperation with the upper bearing 41. Through the abutting cooperation between the abutting portion 2112 and the extension portion 2212, the upward movement of the primary cyclone filter 21 relative to the secondary cyclone filter 22 is limited; and through the rolling cooperation between the upper bearing 41 and the contact portion 2111, the upper end of the primary cyclone filter 21 can be in rotational cooperation with the secondary cyclone filter 22, and the size of the upper bearing 41 is relatively smaller, so that the installation is more convenient and the cost is lower.
[0060] Further preferably, the bottom surface of the extension portion 2212 is obliquely arranged, and specifically, in the radial direction of the dust cup 1 and in the direction from the inside to the outside, the bottom surface of the extension portion 2212 is obliquely arranged upward, and the top surface of the abutting portion 2112 is obliquely arranged in a shape matched with the bottom surface of the extension portion 2212 to better fit the bottom surface of the extension portion 2212, so that the structure is more compact and the abutting effect is better.
[0061] In an embodiment, as shown in Figure 6 the extension portion 2212 is arranged in plurality, and the plurality of extension portions 2212 are arranged in interval along the circumferential direction of the secondary cyclone filter 22 to be uniformly arranged on the circumferential side of the secondary cyclone filter 22; the upper bearing 41 is arranged in plurality, and the plurality of upper bearings 41 are one-to-one arranged on the plurality of extension portions 2212; and the contact portion 2111 is annularly arranged on the outer circumferential side of the plurality of upper bearings 41 and is in rolling contact cooperation with the plurality of upper bearings. Through the rolling connection between the plurality of upper bearings 41 and the contact portion 2111, the contact between the primary cyclone filter 21 and each side of the secondary cyclone filter 22 is more balanced, and the rotation is more smooth.
[0062] Further, in combination with the specific structure of the primary cyclone filter 21 and the secondary cyclone filter 22, the primary cyclone filter 21 comprises a filter support 211 and a filter screen 212 arranged on the filter support 211. Preferably, the filter support 211 is arranged in a substantially cylindrical shape, and the filter support 211 is rotatably connected to the secondary cyclone filter 22 at both ends along the axial direction thereof, and a contact portion is formed at the top end of the filter support 211. A hollow region is arranged on the circumferential surface of the filter support 211, and the filter screen 212 is arranged corresponding to the hollow region. The airflow flows from the outside of the filter screen 212 to the inside of the filter screen 212, i.e. towards the center of the filter support 211, and the dirt is filtered and blocked by the filter screen 212. The secondary cyclone filter 22 comprises a multi-cone filter structure 221 and a cover plate 222. The multi-cone filter structure 221 is arranged on the inside of the filter support 211, and the cover plate 222 is arranged at the upper end of the multi-cone filter structure 221 and abuts against both sides of the axial direction of the plurality of upper bearings 41 together with the multi-cone filter structure 221. At least part of the cover plate 222 is crimped to the top end of the contact portion to further limit the upward movement of the filter support 211. The position of the plurality of upper bearings 41 is limited by the cover plate 222 and the multi-cone filter structure 221, and the position of the upper end of the filter support 211 along the axial direction of the dust cup 1 is limited by the multi-cone filter structure 221 and the cover plate 222.
[0063] In particular, in combination with the specific structure of the primary cyclone filter 21 and the secondary cyclone filter 22, Figure 4 , Figure 6 and Figure 8 as shown, a first positioning column 2211 is arranged on each epitaxial portion 2212, a plurality of second positioning columns 2221 are arranged on the cover plate 222, and a positioning hole is arranged on each second positioning column 2221. The plurality of first positioning columns 2211 are inserted one by one into the plurality of positioning holes, and the plurality of upper bearings 41 are sleeved one by one on the outside of the plurality of second positioning columns 2221. The surface on which the first positioning column 2211 is arranged and the surface on which the second positioning column 2221 is arranged are respectively crimped to both ends of the upper bearing 41 along the axial direction thereof, so as to completely limit the inner ring of each upper bearing 41, and the outer ring of each upper bearing 41 can be in rolling contact with the filter support 211.
[0064] Furthermore, a plurality of first connecting holes are arranged on the multi-cone filter structure 221, and a plurality of second connecting holes are arranged on the cover plate 222. The plurality of first connecting holes and the plurality of second connecting holes are arranged one by one and are fixedly connected by connecting members such as screws, bolts, etc. The connection stability of the multi-cone filter structure 221 and the cover plate 222 is better.
[0065] The multi-cone filter structure 221 comprises a plurality of conical cylinders, a plurality of extension portions 2212 are protruded on the outer side of the plurality of conical cylinders, a plurality of first positioning columns 2211 are protruded on some of the extension portions 2212, a plurality of first connecting holes are protruded on the rest of the extension portions 2212, and preferably, the plurality of first positioning columns 2211 and the plurality of first connecting holes are arranged in a staggered manner along the circumference of the secondary cyclone filter 22, so as to ensure more reliable connection and more consistent contact.
[0066] Moreover, a sealing member 3 is arranged between the dust cup and the contact portion and / or the abutting portion, so that leakage of dirt in the dust cup 1 from the gap between the filter support 211 and the dust cup 1 can be avoided.
[0067] Specifically, the upper end of the filter support 211 is arranged close to the dust cup 1, and preferably, the upper end of the filter support 211 is arranged in the dust cup 1. Figure 3 and Figure 4 As shown, the abutting portion is provided with a receiving groove 2111a on the outer circumferential side; the sealing member 3 comprises a brush member, which is arranged on the inner side of the dust cup 1 and at least partially accommodated in the receiving groove 2111a, so as to form a barrier to the dirt and avoid the dust entering the gap between the upper end of the primary cyclone filter 21 and the secondary cyclone filter 22 when the filter support 211 rotates, which cannot be cleaned and causes the rotation resistance of the primary cyclone filter 21 to increase, and even be stuck. Moreover, the brush member can clean the primary cyclone filter during rotation.
[0068] The dust cup 1 comprises a dust cup cavity 11 and a dust cup cover 12, and a primary dust outlet is formed at the bottom of the dust cup 1, and the dust cup cover 12 can open and close the primary dust outlet. The secondary cyclone filter 22 is provided with a secondary dust outlet 224, which is arranged in a spaced-apart manner with the primary dust outlet and extends from the bottom of the primary cyclone filter 21.
[0069] In an embodiment, as shown in Figure 3 The secondary cyclone filter 22 further comprises a dust guide cavity 223, which is arranged at the dust falling end of the multi-cone filter structure 221, and the secondary dust outlet 224 is arranged at the end of the dust guide cavity 223 away from the multi-cone filter structure 221. The large end of each conical cylinder faces upward to form an air outlet, and the vacuum cleaner 100 further comprises a fan 6, the air inlet end of which is in communication with the air outlets of the conical cylinders, and specifically, a plurality of air passing holes are arranged on the cover plate 222, which can correspondingly guide the air passing through the air outlets and the fan 6. Figure 2The middle dotted arrow indicates the airflow direction, and the small opening end of each conical cylinder is downward to form a dust falling port. A filter inlet is formed on the side of each conical cylinder. The airflow filtered by the first cyclone filter 21 enters each conical cylinder through the filter inlet, and then is filtered again by each conical cylinder. The remaining dirt can be separated and falls into the dust collecting cavity 223 through the dust falling port, and the clean airflow can flow out of the air outlet of each conical cylinder, pass through the plurality of air holes in the cover plate 222, and then enter the fan 6. The secondary dust discharge port 224 is arranged at the bottom of the dust falling cavity, and a sealing plate 226 can be arranged at the secondary dust discharge port 224. When the vacuum cleaner 100 is working, the sealing plate 226 closes the secondary dust discharge port 224. When the vacuum cleaner 100 is placed in the base station for dust collection, the sealing plate 226 opens the secondary dust discharge port 224 under the action of the negative pressure of the base station, so that the dirt in the dust falling cavity can fall out and fall into the dust cup 1, which can be sucked out by the base station, thereby realizing automatic cleaning of the dust cup 1.
[0070] It can be understood that when the flow direction of the airflow is opposite to the rotation direction of the first cyclone filter 21, the speed difference between the two will increase, and the winding of the filament will be accelerated. Therefore, preferably, the flow direction of the airflow in the dust cup 1 should be consistent with the rotation direction of the first cyclone filter 21.
[0071] Furthermore, the first cyclone filter 21 can be driven by a driving member to rotate actively, or the first cyclone filter 21 can be rotated passively under manual driving.
[0072] Preferably, the first cyclone filter 21 can be rotated under the pushing action of the airflow entering the dust cup 1, and the rotation directions of the two are consistent. Specifically, the airflow entering the dust cup 1 flows in a first direction, the first cyclone filter 21 has a rotation stroke in the first direction, and the air inlet 111 is arranged on one side of the dust cup 1 and faces the one side of the dust cup 1, so that the airflow entering the dust cup 1 can rotate in the first direction. The first cyclone filter 21 is driven to rotate under the action of the airflow entering the dust cup 1 from the air inlet 111, so that the filament is not easy to wind on the outer surface of the first cyclone filter 21, and part of the dirt falling on the first cyclone filter 21 can also be thrown off by the rotation of the first cyclone filter 21 itself, which better ensures the cleanliness and avoids blockage. The first direction can be clockwise or counterclockwise around the axial direction of the dust cup 1.
[0073] In combination with Figure 7 and Figure 8As shown, a plurality of first vanes 214 are arranged at intervals on the outer periphery of the primary cyclone filter 21, and each first vane 214 extends along the axial direction of the primary cyclone filter 21; or each first vane 214 extends obliquely along the axial direction of the primary cyclone filter 21 towards the same side, and the rotation directions of the plurality of first vanes 214 are consistent with the first direction, so that the normal of each first vane 214 is as parallel as possible to the direction of the airflow, and the pushing effect of the airflow on the vanes is optimized. Preferably, the angle between the first vane 214 and the rotation axis of the primary cyclone filter 21 is less than 90°, preferably less than 45°, so that the primary cyclone filter 21 can rotate better even when the airflow is very small.
[0074] Further, as shown in Figure 7 The primary cyclone filter 21 further comprises a plurality of second vanes 215, which are located at one end of the primary cyclone filter 21 close to the secondary dust outlet 224, form an auxiliary pushing effect, and the first vanes 214 and the second vanes 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. Preferably, the shape of each second vane 215 is consistent with the shape of each first vane 214, so as to optimize the pushing effect of the airflow on the vanes.
[0075] The above description is only preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or direct or indirect application in other related technical fields based on the content of the present application specification and drawings is also included in the patent protection scope of the present application.
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 primary cyclone filter (21) and a secondary cyclone filter (22), the primary cyclone filter (21) being rotatably sleeved outside the secondary cyclone filter (22), and the rotation axis of the primary cyclone filter (21) extending in the up-down direction, wherein the bottom end of the primary cyclone filter (21) is rotatably connected to the secondary cyclone filter (22) through a lower bearing structure (5), and the primary cyclone filter (21) is limited from moving downward by the lower bearing structure (5). The primary cyclone filter (21) is arranged in interference fit with the lower bearing structure (5).
2. The vacuum cleaner (100) of claim 1, wherein, The lower bearing structure (5) comprises a lower bearing (51) sleeved at the bottom end of the secondary cyclone filter (22), and the primary cyclone filter (21) is fixedly sleeved outside the lower bearing (51).
3. The vacuum cleaner (100) of claim 1, wherein, The lower bearing structure (5) further comprises a limiting piece (225) abutting and limiting the bottom end of the lower bearing (51).
4. The vacuum cleaner (100) of claim 3, wherein, The limiting piece (225) comprises a limiting ring (2251) screwed to the lower end of the secondary cyclone filter (22).
5. The vacuum cleaner (100) of claim 4, wherein, The primary cyclone filter (21) further comprises a stop portion (213) in abutting fit with the upper end of the lower bearing (51).
6. The vacuum cleaner (100) of claim 3, wherein, The upper end of the primary cyclone filter (21) is rotatably connected to the secondary cyclone filter (22) through an upper bearing structure (4).
7. The vacuum cleaner (100) of claim 1, wherein, The upper end of the primary cyclone filter (21) is in abutting fit with the upper bearing structure (4) to limit the upward displacement of the primary cyclone filter (21).
8. The vacuum cleaner (100) of claim 7, wherein, The upper bearing structure (4) comprises an extension portion (2212) and an upper bearing (41) arranged on the extension portion (2212); 9. The vacuum cleaner (100) of claim 8, wherein, The primary cyclone filter (21) comprises a contact portion (2111) and an abutting portion (2112), the abutting portion (2112) is in abutting fit with the extension portion (2212) to limit the upward movement of the primary cyclone filter (21), and the contact portion (2111) is annularly arranged outside the upper bearing (41) and in rolling fit with the upper bearing (41). The bottom surface of the extension portion (2212) is arranged in an inclined manner, and the top surface of the abutting portion (2112) is arranged in an inclined manner matching the bottom surface of the extension portion (2212).
10. The vacuum cleaner (100) of claim 9, wherein, The extension portion (2212) is provided in plurality, the plurality of extension portions (2212) are arranged at intervals along the circumference of the secondary cyclone filter (22), the upper bearing (41) is provided in plurality, the plurality of upper bearings (41) are arranged one by one on the plurality of extension portions (2212), and the contact portion (2111) is annularly arranged outside the plurality of upper bearings (41) and in rolling contact fit with the plurality of outer bearings.
11. The vacuum cleaner (100) of claim 9, wherein, A sealing piece (3) is arranged between the dust cup (1) and the contact portion (2111) and / or the abutting portion (2112).
12. The vacuum cleaner (100) of claim 9, wherein, 13. The vacuum cleaner (100) of claim 11, wherein, The secondary cyclone filter (22) comprises a multi-cone filter structure (221) and a cover plate (222), a plurality of the outer extension portions (2212) are arranged on the outer circumferential side of the multi-cone filter structure (221), and the cover plate (222) is arranged on the top end of the multi-cone filter structure (221) and is limited to both ends of the multi-cone filter structure (221) together with the plurality of upper bearings (41).
14. The vacuum cleaner (100) of claim 13, wherein, A first positioning column (2211) is arranged on each of the outer extension portions (2212), a plurality of second positioning columns (2221) are arranged on the cover plate (222), and a positioning hole is arranged on each of the second positioning columns (2221); the plurality of first positioning columns (2211) are inserted into the plurality of positioning holes one by one, and the plurality of upper bearings (41) are arranged on the outer circumferential side of the plurality of second positioning columns (2221) one by one.
15. The vacuum cleaner (100) of claim 13, wherein, At least part of the cover plate (222) is crimped on the top end of the contact portion (2111).
16. A vacuum cleaner (100) characterized by Comprise: A dust cup (1); A filtering device (2) arranged in the dust cup (1) and comprising a primary cyclone filter (21) and a secondary cyclone filter (22), the upper end of the primary cyclone filter (21) is rotatably connected to the secondary cyclone filter (22) through an upper bearing structure (4), the lower end of the primary cyclone filter (21) is rotatably connected to the secondary cyclone filter (22) through a lower bearing structure (5), and the upper bearing structure (4) and the lower bearing structure (5) can limit the displacement of the primary cyclone filter (21) in the up-down direction respectively.
17. The vacuum cleaner (100) of claim 16, wherein, A primary dust outlet is formed at the bottom of the dust cup (1), a secondary dust outlet (224) is arranged on the secondary cyclone filter (22), the secondary dust outlet (224) can be extended from the bottom of the primary cyclone filter (21) and arranged in opposite intervals with the primary dust outlet.
18. The vacuum cleaner (100) of claim 16, wherein, An air inlet (111) is arranged on one side of the dust cup (1), the air inlet (111) is arranged towards one side of the dust cup (1), so that the airflow entering the dust cup (1) can rotate in a first direction.
19. The vacuum cleaner (100) of claim 18, wherein, A plurality of first vanes (214) are arranged on the outer circumferential side of the primary cyclone filter (21); The plurality of first vanes (214) are arranged in the axial direction of the primary cyclone filter (21); or The plurality of first vanes (214) are arranged on the same side of the axial direction of the primary cyclone filter (21) and the rotation direction of the plurality of first vanes (214) is consistent with the first direction.
20. The vacuum cleaner (100) of claim 19, wherein, The primary cyclone filter (21) further comprises a plurality of second vanes (215), and the shape of the plurality of second vanes (215) is consistent with the shape of the plurality of first vanes (214).