Filtering assembly, vacuum cleaner and cleaning set

Abstract

A filtering assembly, a vacuum cleaner and a cleaning set. The filtering assembly comprises a cyclone separator (321) and a HEPA assembly (322); the cyclone separator (321) comprises a filtering support (3211) and a filtering screen (3212), wherein an air guide structure (32111) protruding outwards in the radial direction and spirally extending towards one side of the filtering screen (3212) is formed on the side wall of one end of the filtering support (3211), and a plurality of through first air outlet holes (32112) are formed in the air guide structure (32111); the HEPA assembly (322) comprises a HEPA holder and a HEPA body (3222), a plurality of second air outlet holes (32211) being formed in the HEPA holder, the HEPA body (3222) being arranged on the HEPA holder and comprising a plurality of folds (32221), and an airflow circulation channel in the axis direction of the cyclone separator (321) being formed between any two adjacent folds (32221). Providing the spiral air guide structure and forming the spirally-arranged first air outlet holes (32112) in the air guide structure can achieve gas-solid separation in a dust collecting state, and can achieve self-cleaning of the inside and outside of the filtering assembly as well as the inner wall of a dust cup during automatic dust collection. The present invention achieves a simple structure and good self-cleaning and dust discharging effects.

Description

Filter assembly, vacuum cleaner and cleaning kit Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and in particular to a filter component, a vacuum cleaner and a cleaning kit. Background Art

[0002] Handheld vacuum cleaners, thanks to their compact size and portability, are increasingly becoming commonplace in households. These cleaners typically use the negative pressure generated by a fan to draw debris and other impurities into a dust bin for collection. The dust cup is small, and after use, the bin must be opened to empty the waste. However, this process can scatter dust, causing secondary pollution. To address this issue, base stations with dust collection capabilities have emerged on the market, collecting dust from the dust cup and preventing it from becoming airborne. For example, Chinese patent document No. CN218651617U discloses a vacuum cleaner base station dust collection system, including a base station and a vacuum cleaner. The base station includes a base, a support rod and a support component. A dust collection chamber is provided in the support component. A dust bag and a negative pressure component are provided in the base. The vacuum cleaner includes a handheld rod and a dust cup. The dust cup has a dust cup body and a dust cup bottom cover. The dust cup body is provided with a release button for controlling the rotation of the dust cup bottom cover to open or close. The vacuum cleaner is placed on the base station, and the trigger part on the base station triggers the bottom cover release button. The dust cup bottom cover opens, and the negative pressure component sucks to generate negative pressure inside the receiving chamber. The dust inside the dust cup body automatically falls and is collected in the base station, thereby achieving the purpose of self-dust collection. This conventional cleaning equipment has two suction devices in the entire cleaning set. One suction device is set in the vacuum cleaner, and is used to generate negative pressure in the dust cup when the vacuum cleaner is in the vacuuming state to achieve the purpose of dust collection. The other suction device is used to generate negative pressure in the dust collection chamber of the base station when collecting dust to achieve the purpose of collecting dust in the dust cup, that is, collecting dust. On the one hand, the cost is relatively high. On the other hand, because the airflow passes through the long suction channel at the front end during suction, the air volume loss is relatively large, resulting in a small integrated effective air volume and poor dust collection effect. On the other hand, the weight of the entire cleaning set is relatively large, which is not conducive to customer transportation. In addition, the dust cup of the vacuum cleaner is usually provided with a filter separation component for separating dust particles, such as a conventional cyclone filter. As the core component of the vacuum cleaner, the filter separation component will accumulate a lot of dust and debris on the filter element after frequent use, resulting in a poor filtering effect. It needs to be cleaned to improve its filtering effect, and cleaning has always been a major problem that troubles consumers. The original technology generally involved disassembling the filter assembly and manually washing it with water or blowing it clean. However, this cleaning method is cumbersome and inefficient. During manual washing, dust is kept close to the user, making it easy for dust to enter the human respiratory system. Therefore, it cannot meet current market demand. To address this problem, various filter self-cleaning mechanisms are currently available on the market. They can be roughly divided into contact cleaning mechanisms and non-contact cleaning mechanisms. Contact cleaning mechanisms use scraping strips, brushes, and blades that directly act on the filter screen, while non-contact cleaning mechanisms use percussion vibration or negative pressure suction.Contact cleaning methods generally operate simultaneously with the startup of the vacuum cleaner. Users cannot choose the self-cleaning time according to their needs. The noise during operation is relatively loud, affecting the user experience, and the cleaning effect is also poor. For relatively hard cleaning components such as scrapers, it is easy to damage the filter screen during the cleaning process, resulting in a decrease in the filtering effect of the filter screen or even causing the filter screen to fail. Non-contact solutions are widely used in existing vacuum cleaners on the market, such as the filter self-cleaning device and vacuum cleaner disclosed in Chinese Patent Document Publication No. CN116019386A. The filter self-cleaning device includes a housing, a power source, a transmission assembly, a cam, a knocking member, and an elastic member. The knocking member includes a contact portion and a knocking portion. The contact portion contacts the cam, and the knocking portion is used to knock a knocking object connected to the filter. The knocking of the knocking member causes the filter to vibrate, causing dust to be vibrated and separated from the filter screen, thereby achieving the purpose of filter cleaning. However, in this solution, on the one hand, the structure of the filter self-cleaning device is very complex, resulting in high design costs. On the other hand, the knocking member can only clean the filter screen of the filter, but cannot clean dust attached to the inner wall of the dust cup. On the other hand, negative pressure suction solutions also require the addition of a suction device, resulting in higher costs. Furthermore, because the suction airflow must pass through a long suction channel at the front end, air volume loss is significant, and the amount of air actually entering the dust cup to backwash the filter screen is relatively small, resulting in poor self-cleaning of the filter. Furthermore, most existing filter assembly structures utilize a cyclone filter structure, which is only used to achieve gas-solid separation during dust collection and has a relatively simple function. Further improvements are necessary to enhance its functionality. Therefore, to address the above-mentioned issues, the present invention has been developed.

[0003] Summary of the Invention

[0004] In view of at least one of the above-mentioned technical problems, the present invention aims to provide a filter assembly, a vacuum cleaner and a cleaning kit.

[0005] The technical solution of the present invention is:

[0006] One of the objects of the present invention is to provide a filter assembly, comprising a cyclone separator for primary filtration and a HEPA assembly for secondary filtration disposed within the cyclone separator; the cyclone separator comprises a filter bracket and a filter screen disposed on the filter bracket, a side wall at one end of the filter bracket being formed with an air guide structure that protrudes radially outward and spirally extends toward one side of the filter screen, the air guide structure being provided with a plurality of first air outlet holes extending therethrough;

[0007] The HEPA assembly includes a HEPA bracket and a HEPA body. The HEPA bracket is suitable for being fixed to the end of the filter bracket where the first air outlet is opened and has a plurality of second air outlets opened thereon. The HEPA body is arranged on the HEPA bracket and includes a plurality of pleats. An airflow channel is formed between any two adjacent pleats along the axis of the cyclone separator.

[0008] When the filter assembly is used in a vacuum cleaner, it has a dust suction state and a dust blowing state. In the dust suction state, the other end of the filter bracket is closed, and the airflow forms a spiral airflow along the outer contour of the air guide structure, passes through the filter screen for one filtration, enters the filter bracket, and is filtered twice by the HEPA assembly before being discharged along the air flow flow channel from the top opening of the HEPA body; in the dust blowing state, the airflow enters the filter bracket from the second air outlet and is partially blown through the first air outlet to the space between the outer wall of the filter screen and the inner wall of the dust cup body of the vacuum cleaner, and partially blown to the space between the inner wall of the filter bracket and the outer wall of the HEPA body, thereby realizing self-cleaning of the cyclone separator, HEPA assembly and dust cup.

[0009] Another object of the present invention is to provide a vacuum cleaner, comprising a brush head assembly, a body assembly, a fan assembly and a dust cup assembly, wherein the brush head assembly is connected to the air inlet channel on the body assembly through an extension tube, the fan assembly and the dust cup assembly are installed on the body assembly, and the dust cup assembly comprises a dust cup body and a filter assembly provided in the dust cup body, and the filter assembly is the filter assembly described in any one of the above items.

[0010] Another object of the present invention is to provide a cleaning kit, comprising a vacuum cleaner and a base station, wherein the vacuum cleaner is the above-mentioned vacuum cleaner, and / or the power source of the base station in the dust collecting state and the vacuum cleaner in the dust collecting state is the fan assembly in the vacuum cleaner, and in the dust collecting state, the fan assembly blows air forward into the dust cup assembly and the base station.

[0011] Compared with the prior art, the advantages of the present invention are:

[0012] The filter assembly of the present invention is provided with a spiral air guide structure and a plurality of spiral first air outlet holes formed therein. This not only achieves gas-solid separation during dust collection, but also enables self-cleaning of the filter assembly interior, exterior, and inner wall of the dust cup during dust collection. The structure is simple and the self-cleaning dust removal effect is excellent. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0014] FIG1 is a schematic diagram of the three-dimensional structure of a cleaning kit according to an embodiment of the present invention;

[0015] FIG2 is a schematic diagram of the three-dimensional structure of a filter assembly according to an embodiment of the present invention;

[0016] FIG3 is a schematic diagram of a three-dimensional structure of the filter assembly in FIG2 with the bottom facing upward;

[0017] FIG4 is a top view of the filter assembly of FIG2 ;

[0018] FIG5 is a schematic cross-sectional view of the filter assembly of FIG2 (arrows indicate airflow directions in the dust suction state and the dust blowing state);

[0019] FIG6 is a front view of the HEPA component of the filter assembly of FIG2;

[0020] FIG7 is a schematic diagram of a three-dimensional structure of the filter assembly of FIG2 with the HEPA component bottom facing upward;

[0021] FIG8 is a top view of the HEPA filter assembly of FIG2;

[0022] FIG9 is a cross-sectional view of a vacuum cleaner according to an embodiment of the present invention. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0024] A filter assembly according to an embodiment of the present invention, as shown in Figures 2 to 8, includes a cyclone separator 321 and a HEPA assembly 322. The HEPA assembly 322 is disposed within the cyclone separator 321 and serves as a filter element. The cyclone separator 321 is used for primary filtration, and the HEPA assembly 322 is used for secondary filtration. The cyclone separator 321 includes a filter bracket 3211 and a filter screen 3212 disposed on the filter bracket 3211. A sidewall at one end of the filter bracket 3211 is formed with an air guide structure 32111 that protrudes radially outward and spirally extends toward one side of the filter screen 3212. The air guide structure 32111 is provided with a plurality of first air outlet holes 32112 extending therethrough. The HEPA component 322 includes a HEPA bracket and a HEPA body 3222. The HEPA bracket is suitable for being fixed on one end of the filter bracket 3211 having a first air outlet hole 32112 and having a plurality of second air outlet holes 32211 thereon. The HEPA body 3222 is arranged on the HEPA bracket and includes a plurality of pleats 32221. An air flow channel 32222 is formed between any two adjacent pleats 32221 along the axial direction of the cyclone separator 321. It should be noted that the top of the HEPA body has an opening so that the air flow can be discharged from the dust cup assembly through this opening when in the vacuuming state. When the filter assembly 32 is used in the vacuum cleaner, it has a dust suction state and a dust blowing state. In the dust suction state, the other end of the filter bracket 3211 is closed, and the air flow forms a spiral air flow along the outer contour of the air guide structure to pass through the filter mesh 3212 for one filtration, then enters the filter bracket 3211 and is filtered for the second time by the HEPA assembly 322, and then is discharged from the top opening of the HEPA body along the air flow channel 32222. That is to say, in the dust suction state, the air flow does not pass through the second air outlet 32211 when being discharged; in the dust blowing state, the air flow enters the filter bracket 3211 through the second air outlet 32211 and is partially blown through the first air outlet 32112 to the space between the outer wall of the filter mesh 3212 and the inner wall of the dust cup body 31 of the vacuum cleaner, and partially blows to the space between the inner wall of the filter bracket 3211 and the outer wall of the HEPA body 3222, thereby realizing self-cleaning of the cyclone separator 321, the HEPA assembly 322 and the dust cup. The filter assembly of this embodiment of the present invention is provided with a spiral air guide structure 32111 and a plurality of spiral first air outlet holes 32112 formed in the air guide structure 32111. This not only achieves gas-solid separation during dust collection, but also enables self-cleaning of the interior and exterior of the filter assembly 32 and the inner wall of the dust cup body during dust collection. This structure is simple and has excellent self-cleaning and dust removal effects.

[0025] It should be noted that in the embodiment of the present invention, the HEPA body 3222 is a sheet or plate-shaped HEPA that is folded back multiple times and rolled into a frustum structure. Each pleat 32221 is triangular in shape as shown in FIG. 7 , and the air flow channel 32222 formed between any two adjacent pleats 32221 is also triangular in shape.

[0026] Specifically, as shown in Figures 2 to 8, the filter bracket 3211 has a cavity in the middle to facilitate the installation of the HEPA assembly 322. The use of the filter bracket 3211 will be described and explained as an example. As shown in Figure 2, from top to bottom, the filter bracket 3211 includes a first section, a second section, and a third section. The outer diameter of the first section is larger than the outer diameters of the second and third sections, meaning that the filter bracket 3211 is thicker at the top and thinner at the bottom. More specifically, the outer wall of the first section protrudes radially outward to form a wind guide structure that spirally extends downward. In the embodiment of the present invention, the wind guide structure is preferably a spiral wind guide groove as shown in Figure 3. Specifically, the wind guide structure includes a guide wall 321111 that spirally extends downward from the top of the first section in the axial direction, as shown in Figure 5, and a wind shield wall 321112 that extends in the axial direction and is formed on the outside of the guide wall 321111. The top of the first section has an opening to facilitate the placement and fixation of the HEPA assembly 322. The second section is provided with a filter 3212, and the third section is in the shape of an inverted cone. Preferably, as shown in Figure 3, the third section is specifically as shown in Figure 2, and the lower end has a blowing dust shield structure 3214, which is closed in the dust suction state and opened in the dust blowing state. The air guide structure, that is, the spiral air guide groove, is specifically a guide wall 321111 with several penetrating first air outlet holes 32112, and the lower end outlet of the spiral air guide groove extends to connect with the outer side of the filter 3212. When the filter bracket 3211 is installed, the air outlet position facing the air inlet channel is also provided with an air inlet dust blocking structure 3213, which is opened in the dust suction state to connect the air inlet channel and the dust cup body 31, and is closed in the positive pressure dust blowing state to cut off the air inlet duct 11 and the dust cup body 31. Preferably, the air inlet dust reversing structure is flippably arranged on the top side wall of the first section of the filter bracket 3211, and after the air inlet channel is opened, it is flipped to block the entrance of the spiral air guide groove. That is to say, in the dust suction state, the airflow entering the dust cup body 31 through the air inlet channel will not enter the interior of the spiral air guide groove, but will only spiral downward along the outer wall of the spiral air guide groove to form a spiral airflow. As for the HEPA component 322, as shown in Figures 6 to 8, the HEPA component 322 includes a HEPA frame 3221, a HEPA body 3222 and a HEPA bottom cover 3223. The HEPA frame 3221 is provided with a plurality of second air outlet holes 32211. When installed, the HEPA frame 3221 is covered at the top opening of the first section of the filter bracket 3211, and the first air outlet holes 32112 and the second air outlet holes 32211 correspond to each other. The correspondence here means that the projections of the two on the same horizontal plane, that is, along the axis direction of the filter component 32, are at least partially overlapped, which can be completely overlapped or partially overlapped.In a preferred embodiment of the present invention, as shown in Figures 7 and 8, the HEPA frame 3221 is a circular disc frame, and there are two groups of second air outlet holes 32211 on the HEPA frame 3221. The two groups of second air outlet holes 32211 are concentric and have different radii, that is, the HEPA frame 3221 is provided with an inner and outer circle of second air outlet holes 32211, and each circle of second air outlet holes 32211 is preferably composed of a plurality of circumferentially spaced arc-shaped air holes, wherein the inner circle of second air outlet holes 32211 corresponds to the gap between the outer wall of the HEPA body 3222 and the inner wall of the filter bracket 3211, that is, the projection of the inner circle of second air outlet holes 32211 and the space between the inner wall of the cyclone separator 321 and the outer wall of the HEPA body 3222 on the horizontal plane overlaps. The second air outlet holes 32211 of the outer ring correspond to the first air outlet holes 32112 , that is, the projections of the second air outlet holes 32211 and the first air outlet holes 32112 of the outer ring on the horizontal plane overlap.

[0027] The HEPA filter 3221 of the embodiment of the present invention is a kind of HEPA filter that is used for filtering out pollutants in the air. In the cleaning device of the embodiment of the present invention, in the dust collection state, airflow can directly enter the airflow channel 32222 through the avoidance gap 32231 for secondary filtration. In the dust blowing state, specifically in the self-cleaning mode, airflow blows through the HEPA body 3222 through the airflow channel 3222 and then passes through the avoidance gap 32231 and is discharged through the bottom opening of the filter bracket 3211. The provision of the avoidance gap 32231 also ensures that dust will not be temporarily trapped in dead corners during the self-cleaning operation, which can greatly improve the self-cleaning efficiency of the filter. Specifically, as shown in Figure 6, the HEPA body 3222 is in the shape of an inverted cone with a thicker upper end and a thinner lower end, and the HEPA bottom cover 3223 is a polygon with multiple corners. In an alternative embodiment, the HEPA bottom cover 3223 of the HEPA assembly 322 is not provided with the avoidance gap 32231. In another alternative embodiment, the HEPA body 3222 can also be arranged in a conventional sheet-like manner, that is, one or more sheet-like HEPAs spaced side by side or distributed in an array can be set at the bottom of the HEPA frame 3221, and each sheet-like HEPA body 3222 also has multiple pleats 32221. It should be noted that the airflow circulation channel is different in the dust collection state and the dust blowing state. Specifically, as described above, in the dust collection state, the airflow circulation channel 32222 is specifically the side of the inner wall of the HEPA body 3222 facing away from the filter bracket 3211, that is, the space defined between any adjacent pleats on the inner wall of the HEPA body. In the dust blowing state, the airflow circulation channel 32222 is the space defined between any two adjacent pleats on the outer wall of the HEPA body 3222.

[0028] In the embodiment of the present invention, in the dust suction state, the air inlet dust shield structure 3213 is opened, and the air blowing dust shield structure 3214 is closed, the air flow with dust and debris sucked into the air inlet channel enters the dust cup body 31 and is filtered once through the filter screen 3212 along the air guide structure, after which the dust particles fall directly, the air flow enters the interior of the filter bracket 3211 and is filtered twice along the air flow channel 32222, and then enters the fan assembly 20 through the second air outlet 32211 and is finally discharged through the dust suction exhaust port 12; in the positive pressure dust blowing state, the air inlet dust shield structure 3213 is closed, and the air blowing dust shield structure 3214 is closed, and the air flow with dust and debris sucked into the air inlet channel enters the dust cup body 31 and is filtered once through the filter screen 3212 along the air guide structure, after which the dust particles fall directly, the air flow enters the interior of the filter bracket 3211 and is filtered twice along the air flow channel 32222, and then enters the fan assembly 20 through the second air outlet 32211 and is finally discharged through the dust suction exhaust port 12; in the positive pressure dust blowing state When the structure 3214 is opened, the airflow entering the dust blowing inlet 13 passes through the fan assembly 20 and the second air outlet 32211, and is blown into the space between the outer wall of the filter bracket 3211 and the inner wall of the dust cup body 31, or partially blown into the space between the inner wall of the filter bracket 3211 and the outer wall of the HEPA body 3222, and partially blown into the space between the outer wall of the filter bracket 3211 and the inner wall of the dust cup body 31, and finally enters the base station 40 through the opening at the bottom of the dust cup body 31 to achieve self-dust collection and self-cleaning of the filter assembly 32 and the inner wall of the dust cup body 31. It should be noted that in the dust blowing state, part of the airflow goes out through the first air outlet 32112 and also forms a spiral airflow around the outer wall of the air guide structure. This part of the airflow has the same spiral direction as the airflow entering the dust cup body 31 from the air inlet channel in the dust suction state, which can achieve self-cleaning of the outer wall of the cyclone filter and the inner wall of the dust cup body 31. In addition, part of the airflow passing through the first air outlet 32112 will spiral downward along the guide wall 321111 to self-clean the inner wall of the filter 3212, and another part of the airflow will enter between the inner wall of the filter bracket 3211 and the outer wall of the HEPA body 3222 through the second air outlet 32211, and the flow direction of this part of the airflow is consistent with the fold line between the two adjacent folds 32221 of the HEPA body 3222, so as to clean the outer wall of the HEPA body 3222. The cleaning device of the embodiment of the present invention, through the improvement of the structure of the filter component 32, although the cleaning device of the embodiment of the present invention blows the airflow in the opposite direction to the filter component 32 in the dust blowing state like the existing suction self-cleaning cleaning device, but the embodiment of the present invention adopts the structural setting and the positive pressure self-cleaning method, not only the outer wall of the cyclone filter and the outer wall of the HEPA body 3222 can be self-cleaned, but also the inner wall of the dust cup can be self-cleaned. Compared with the prior art of setting a suction device or other negative pressure device in the base station 40, the distance from the dust cup component 30 is shorter, the wind loss is smaller, the self-cleaning wind force is strong, and the self-cleaning effect is naturally better.

[0029] As for the air-blowing dust shield structure 3214, it is a dust shield made of an existing conventional soft material, such as a rubber sheet with a cross cut in the middle as shown in FIG4 . As an alternative embodiment, the air-blowing dust shield structure 3214 can also be an existing conventional one-way valve, and the wind can only flow in one direction, that is, in the dust suction state, the wind cannot enter the inside of the filter bracket 3211 from the bottom to the top, but in the dust blowing state, the air flow can be discharged from the inside of the filter bracket 3211 into the dust cup and then introduced into the base station 40. As another alternative embodiment, the air-blowing dust shield structure 3214 can also be omitted, and an opening can be opened at the bottom end of the third section of the filter bracket 3211, and the opening can be directly extended to contact the inner surface of the movable cover plate 34 on the bottom cover plate 33 of the dust cup body 31, without being fixed. In the dust suction state, due to the negative pressure in the dust cup body 31, the bottom end of the filter bracket 3211 can be tightly attracted to the movable cover 34 to play a sealing role. In the positive pressure dust blowing state, since the bottom end of the filter bracket 3211 and the movable cover 34 are not fixedly connected, the movable cover 34 will be blown open under the action of positive pressure, causing the bottom end opening of the filter bracket 3211 to open, so that during the self-cleaning operation, dust and other debris on the outer wall of the HEPA body 3222 can be blown off and introduced into the base station 40.

[0030] For the air guide structure, as shown in FIG4 , the projection of the air guide structure in the horizontal plane direction is a circular ring, and the arrangement of the first air outlet holes 32112 on the air guide structure can be partially spiral or fully spiral. Specifically, any first air outlet hole 32112 is but not limited to a waist-shaped hole or an elliptical hole as shown in FIG3 and FIG4 , and the extension direction of any first air outlet hole 32112, that is, the long axis direction, is set at an angle to the line connecting the center of the circular ring and any end of the first air outlet hole 32112 (the end close to the center of the circular ring or the end away from the center of the circular ring), that is, the extension direction of any first air outlet hole 32112 is not along the radius or diameter direction of the circular ring, but is at an angle to the radius or diameter direction of the circular ring, and the angle is not zero. With such a design, a spiral airflow will be formed when blowing air during self-cleaning, which can achieve a better self-cleaning and dust removal effect. Preferably, the extending direction of all the first air outlet holes 32112 is equal to the angle formed by the line connecting the midpoint of the ring and any end of the first air outlet hole 32112. This facilitates design and processing, and is more conducive to forming a spiral airflow, further improving the self-cleaning effect.

[0031] The embodiment of the present invention also provides a vacuum cleaner, as shown in Figures 2 to 9, including a brush head assembly 50, a body assembly 10, a fan assembly 20 and a dust cup assembly 30. The brush head assembly 50 is connected to the air inlet channel on the body assembly 10 through an extension tube. The fan assembly 20 and the dust cup assembly 30 are installed on the body assembly 10. The dust cup assembly 30 includes a dust cup body 31 and a filter assembly 32 provided in the dust cup body 31. The filter assembly 32 is the filter assembly 32 in the above embodiment. Since the filter assembly 32 in the above embodiment is adopted, it at least has the beneficial effects of the filter assembly 32 in the above embodiment, and the details will not be repeated. As for the brush head assembly 50, it is an existing conventional roller brush type floor brush assembly, which will not be described and limited in detail, and is not the invention point of this application.

[0032] An embodiment of the present invention further provides a cleaning kit, as shown in Figures 1 to 9 , comprising a vacuum cleaner and a base station 40. The vacuum cleaner is the vacuum cleaner of the above embodiment. Since the vacuum cleaner of the above embodiment is used, the cleaning kit has at least the beneficial effects of the above embodiment, and the details will not be repeated here.

[0033] According to some preferred embodiments of the present invention, the power source for the cleaning kit in both the dust collection and vacuuming modes is the fan assembly 20 within the vacuum cleaner. Furthermore, in the dust collection mode, the fan assembly 20 blows air in a forward direction toward the dust cup assembly 30 and the base station 40, which is opposite to the wind direction when the vacuum cleaner is used alone in the vacuuming mode. The specific structure and principle will not be described or limited in detail herein; reference may be made to the description in the application document "A Cleaning Device with Dust Collection, Self-Cleaning, and Dust Collection Functions" filed by the applicant on the same day.

[0034] It should be understood that the above-described specific embodiments of the present invention are merely illustrative or illustrative of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included within the scope of protection of the present invention. In addition, the appended claims are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.

Claims

1. A filter assembly, characterized in that: It comprises a cyclone separator for primary filtration and a HEPA component for secondary filtration arranged in the cyclone separator; the cyclone separator comprises a filter bracket and a filter screen arranged on the filter bracket, a side wall at one end of the filter bracket is formed with an air guide structure protruding radially outward and spirally extending toward one side of the filter screen, and the air guide structure is provided with a plurality of first air outlet holes penetrating therethrough; The HEPA component includes a HEPA bracket and a HEPA body, wherein the HEPA bracket is suitable for being fixed to one end of the filter bracket having the first air outlet hole and having a plurality of second air outlet holes thereon, and the HEPA body is arranged on the HEPA bracket and includes a plurality of folds, and an air flow passage along the axial direction of the cyclone separator is formed between any two adjacent folds; When the filter assembly is used in a vacuum cleaner, it has a dust suction state and a dust blowing state. In the dust suction state, the other end of the filter bracket is closed, and the airflow forms a spiral airflow along the outer contour of the air guide structure, passes through the filter screen for one filtration, enters the filter bracket, and is filtered twice by the HEPA assembly before being discharged from the top opening of the HEPA body along the air flow channel; in the dust blowing state, the airflow enters the filter bracket through the second air outlet and is partially blown through the first air outlet to the space between the outer wall of the filter screen and the inner wall of the dust cup body of the vacuum cleaner, and partially blown to the space between the inner wall of the filter bracket and the outer wall of the HEPA body, thereby realizing self-cleaning of the cyclone separator, HEPA assembly and dust cup.

2. A filter assembly according to claim 1, characterized in that: The projection of the air guide structure on the horizontal plane is a circular ring, and the extension direction of at least part of the first air outlet holes and the line connecting the center of the circular ring and any end of the first air outlet holes form a non-zero angle.

3. A filter assembly according to claim 2, characterized in that: The extending direction of all the first air outlet holes on the horizontal projection plane and the angle formed by the line connecting the center of the circular ring and any end of the first air outlet hole are equal.

4. A filter assembly according to claim 1, characterized in that: The wall surface of the HEPA bracket on which the second air outlet holes are opened is a circular plane, and the second air outlet holes include two circles of air outlet holes distributed radially with the center of the circular plane as the center, wherein the projections of the second air outlet holes in the inner circle and the space between the inner wall of the cyclone separator and the outer wall of the HEPA body in the horizontal plane overlap, and the projections of the second air outlet holes in the outer circle and the first air outlet holes in the horizontal plane overlap.

5. A filter assembly according to claim 1, characterized in that: The HEPA component further comprises a HEPA bottom cover, which is arranged at one end of the HEPA body away from the HEPA bracket, and the HEPA bottom cover is provided with an avoidance gap corresponding to any air flow passage.

6. A filter assembly according to claim 1, characterized in that: The HEPA body is in a columnar or sheet shape.

7. A filter assembly according to any one of claims 1 to 6, characterized in that: The other end of the filter bracket is in an inverted cone shape and extends to contact with the movable cover plate on the bottom cover of the dust cup of the vacuum cleaner or is provided with a blowing dust shielding structure which can be closed in the dust suction state and opened in the dust blowing state.

8. A filter assembly according to claim 7, characterized in that: The air blowing dust shielding structure is a dust shielding sheet made of a soft material or a one-way valve.

9. A vacuum cleaner, comprising a brush head assembly, a body assembly, a fan assembly and a dust cup assembly, wherein the brush head assembly is connected to an air inlet passage on the body assembly through an extension tube, the fan assembly and the dust cup assembly are mounted on the body assembly, and the dust cup assembly comprises a dust cup body and a filter assembly disposed in the dust cup body, characterized in that: The filter assembly is the filter assembly according to any one of claims 1 to 8.

10. A cleaning kit, comprising a vacuum cleaner and a base station, characterized in that: The vacuum cleaner is the vacuum cleaner described in claim 9, and / or the power sources of the base station in the dust collecting state and the vacuum cleaner in the dust suction state are both the fan assembly in the vacuum cleaner, and in the dust collecting state, the fan assembly blows air forward into the dust cup assembly and the base station.

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