Cleaning apparatus

Abstract

The application relates to the technical field of cleaning products, in particular to a cleaning device. The application provides a cleaning device which comprises a dust cup assembly, a first filter assembly and a second filter assembly; the length direction of the dust cup assembly is a first direction; the first filter assembly and the second filter assembly are arranged in the dust cup assembly and are arranged at intervals along the first direction; the two ends of the dust cup assembly along the first direction are respectively provided with an air inlet and an air outlet; the airflow entering the dust cup assembly from the air inlet flows through the second filter assembly and the first filter assembly in sequence and flows out from the air outlet; wherein the second filter assembly is coarse filtering, and the first filter assembly is fine filtering. The cleaning device provided by the application optimizes the structure of the dust cup assembly, improves the filtering effect through multi-stage filtering, and makes the main body diameter smaller, so that the cleaning device is more convenient and labor-saving.

Description

Technical Field

[0001] This application relates to the field of cleaning product technology, and more particularly to a cleaning device. Background Technology

[0002] Vacuum cleaners, floor scrubbers, and robotic vacuum cleaners are widely used for cleaning home environments. These cleaning devices can suck up dust from surfaces to be cleaned and separate the dust from the air, thus collecting the dust.

[0003] In related technologies, cleaning equipment is usually equipped with a floor brush and a dust cup. The floor brush sucks in dust from the surface to be cleaned through the suction port. The airflow carrying the dust enters the dust cup radially, is centrifuged by the cyclone separation structure, and then enters the filter assembly for filtration, thereby achieving dust-air separation.

[0004] However, current dust cups have poor airflow filtration and unreasonable structural design, resulting in a large overall diameter of the device and affecting its flexibility of use. Utility Model Content

[0005] This application provides a cleaning device to solve the technical problems of current dust cups having poor airflow filtration effect and unreasonable structural design, resulting in a large overall diameter of the device and affecting its flexibility of use.

[0006] This application provides a cleaning device, which includes a dust cup assembly, a first filter assembly, and a second filter assembly; the length direction of the dust cup assembly is a first direction; the first filter assembly and the second filter assembly are disposed inside the dust cup assembly and are arranged at intervals along the first direction.

[0007] The dust cup assembly has an air inlet and an air outlet at both ends along the first direction. The airflow entering the dust cup assembly from the air inlet flows through the second filter assembly and the first filter assembly in sequence, and flows out from the air outlet. The second filter assembly is a coarse filter, and the first filter assembly is a fine filter.

[0008] The dust cup assembly of the cleaning equipment provided in this application has a first filter assembly and a second filter assembly inside. After the airflow enters the dust cup assembly from the air inlet, it first enters the second filter assembly for coarse filtration, then enters the first filter assembly for fine filtration, and finally flows out from the air outlet. The multi-stage filtration improves the dust removal effect. In addition, the first filter assembly and the second filter assembly are arranged at intervals along the first direction, which helps to reduce the diameter of the dust cup assembly, making the cleaning equipment smaller and easier to use.

[0009] As an optional implementation, the second filter assembly includes an annular support and a filter screen; the filter screen is connected to the annular support and is arranged around the annular support to form a filter chamber; the filter chamber is open at one end facing the air inlet and covers the air inlet.

[0010] This configuration, by surrounding the filter screen with the ring-shaped support, increases the filtration area and improves the filtration effect.

[0011] As an optional implementation, the annular support is coaxially arranged with the dust cup assembly; there is a ventilation gap between the outer side of the filter screen and the inner sidewall of the dust cup assembly; the airflow entering the filter chamber from the air inlet passes through the filter screen and enters the ventilation gap.

[0012] With this configuration, airflow can flow smoothly to downstream components through the ventilation gaps, ensuring energy transfer efficiency.

[0013] As an optional implementation, the annular bracket is provided with support ribs on its periphery. The support ribs protrude relative to the filter screen toward the inner wall of the dust cup assembly and abut against the inner wall of the dust cup assembly, so as to form a ventilation gap between the filter screen and the inner wall of the dust cup assembly.

[0014] This design allows for ventilation gaps to be created between the filter and the inner wall of the dust cup assembly via the support ribs, thus forming a channel for stable airflow.

[0015] As an optional implementation, the air inlet is provided with a dust baffle, and the dust baffle covers the inside of the air inlet; the dust baffle can be folded inward towards the dust cup assembly under the action of airflow to open the air inlet; the projection of the second filter assembly along the first direction covers the dust baffle.

[0016] This design allows the dust baffle to open and close automatically via airflow, preventing debris and dust from leaking out of the air inlet.

[0017] As an optional implementation, the cleaning device also includes a spiral guide, which is disposed between the first filter assembly and the second filter assembly; the airflow from the second filter assembly enters the spiral guide and forms a spiral airflow to separate dust particles from the airflow.

[0018] With this setup, the airflow can be made to swirl through the spiral guide, generating centrifugal force to separate dust from the airflow.

[0019] As an optional implementation, the first filtration assembly includes a riser pipe and a first filtration unit; the riser pipe is coaxially arranged with the spiral guide and its axial direction is parallel to the first direction; the first filtration unit is arranged around the riser pipe.

[0020] This configuration, by arranging the first filter unit around the riser pipe, improves both the filtration effect and the structural compactness.

[0021] As an optional implementation, the dust cup assembly includes a first cup body and a second cup body, which are joined together in a first direction; a first filter assembly is disposed in the first cup body, and a second filter assembly and a spiral guide are disposed in the second cup body; there is a gap between the air inlet end of the riser pipe and the air outlet end of the spiral guide.

[0022] This design facilitates cleaning by using multiple cups, while ensuring a gap between the air inlet of the riser and the air outlet of the spiral guide to allow the airflow to rotate fully and improve the centrifugal effect.

[0023] As an optional implementation, the first filter assembly includes a riser pipe and a second filter unit; the second filter unit is disposed at the air outlet end of the riser pipe; the spiral guide includes a housing and spiral blades, with the air inlet end of the housing facing the first filter assembly; the air inlet end of the riser pipe is at least partially inserted into the interior of the housing from the air inlet end of the housing; the spiral blades are disposed between the inner wall of the housing and the outer wall of the riser pipe.

[0024] This configuration, by orienting the air inlet end of the housing toward the first filter assembly, reduces the diameter of the spiral guide, thereby reducing the overall diameter of the cleaning equipment and improving ease of use.

[0025] As an alternative implementation, the spiral guide is connected to the end of the second filter assembly facing away from the air inlet.

[0026] This design makes it easy to remove the second filter component along with the spiral guide for cleaning.

[0027] This application provides a cleaning device, including a dust cup assembly, a first filter assembly, and a second filter assembly. The length direction of the dust cup assembly is a first direction. The first and second filter assemblies are disposed inside the dust cup assembly and arranged at intervals along the first direction. The dust cup assembly has an air inlet and an air outlet at its two ends along the first direction, respectively. Airflow entering the dust cup assembly from the air inlet flows sequentially through the second and first filter assemblies and exits from the air outlet. The second filter assemblies are coarse filters, and the first filter assemblies are fine filters. The cleaning device provided by this application optimizes the structure of the dust cup assembly, improving the filtration effect through multi-stage filtration while reducing the diameter of the main body, making it more convenient, easier, and less labor-intensive.

[0028] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that the cleaning equipment provided by this application can solve, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific embodiments. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A schematic diagram of a cleaning device with a spiral structure as a guide vane, provided in an embodiment of this application;

[0031] Figure 2 A schematic diagram of a cleaning device with a spiral structure as the air guide surface, provided in an embodiment of this application;

[0032] Figure 3 A schematic diagram of a spiral guide with a guide vane as the spiral structure provided in an embodiment of this application;

[0033] Figure 4 A schematic diagram of a spiral guide with a spiral structure as the air guide surface provided in an embodiment of this application;

[0034] Figure 5 This is a schematic diagram of the structure of the second filtering component provided in an embodiment of this application;

[0035] Figure 6 This is a schematic diagram of the structure of a first filter assembly with filter paper provided in an embodiment of this application;

[0036] Figure 7 A schematic diagram of the structure of a cleaning device with a filter element provided in an embodiment of this application;

[0037] Figure 8 A schematic diagram of a cleaning device with a second ventilation hole in a ventilation duct body provided in an embodiment of this application;

[0038] Figure 9 A schematic diagram of the structure of the air riser pipe with a first ventilation hole provided in the embodiment of this application;

[0039] Figure 10 A schematic diagram of a riser pipe with a second ventilation hole provided in an embodiment of this application;

[0040] Figure 11 A schematic diagram of the structure of a cleaning device with a dust collection box provided in an embodiment of this application;

[0041] Figure 12 This is a schematic diagram of the structure of the riser pipe with a dust collection box provided in an embodiment of this application;

[0042] Figure 13This is a schematic diagram of the structure of the dust collection box provided in the embodiments of this application;

[0043] Figure 14 A schematic diagram of the cleaning device with the spiral separation structure provided in the embodiment of this application installed in the lifting pipe;

[0044] Figure 15 This is a schematic diagram of the structure of the first filter assembly when the spiral separation structure provided in the embodiment of this application is installed in the rising pipe.

[0045] Explanation of reference numerals in the attached figures:

[0046] 10- Cleaning equipment;

[0047] 100 - Dust cup assembly; 110 - First cup body; 120 - Second cup body; 130 - Baffle; 140 - Air inlet; 150 - Air outlet;

[0048] 200 - Spiral guide vane; 210 - Intermediate shaft; 220 - Guide vane; 230 - Air guide surface;

[0049] 300-First filter assembly; 310-Air riser pipe; 311-Mounting bracket; 3111-First ventilation hole; 3112-Windproof surface; 312-Ventilation duct body; 3121-Opening; 3122-Second ventilation hole; 320-First filter unit; 321-Filter element; 322-Dust collection box; 3221-Box body; 3222-Adsorbent material; 3223-Dust inlet; 323-Filter paper; 330-Outer shell; 331-Dustproof component; 3311-Connecting part; 3312-Dustproof part; 3313-Air guide slope; 340-Helical blade; 350-Airflow duct;

[0050] 400 - Second Filter Unit;

[0051] 500 - Second filter assembly; 510 - Annular support; 511 - Support rib; 520 - Filter screen; 530 - Filter chamber;

[0052] 600 - Floor brush assembly; 610 - Floor brush; 611 - Air intake; 612 - Air intake channel; 620 - Lower cover of the unit;

[0053] 700 - Main body of equipment; 710 - Fan. Detailed Implementation

[0054] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0055] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0056] The terms "first," "second," and "third" (if any) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0057] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such as a process, method, system, product, or maintenance tool that includes a series of steps or units, not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or maintenance tool.

[0058] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0059] Vacuum cleaners, floor scrubbers, and robotic vacuum cleaners are widely used for cleaning household environments. These devices suck up dust from surfaces to be cleaned and separate the dust from the air, thus collecting the dust. In these technologies, cleaning equipment typically includes a floor brush and a dust cup. The floor brush sucks in dust from the surface through the suction port, and the airflow carrying the dust enters the dust cup radially. After being centrifuged by a cyclone separator, the air then enters a filter assembly for filtration, achieving dust-air separation.

[0060] However, current dust cups only separate dust and gas through centrifugation and single filtration, resulting in poor filtration efficiency. Furthermore, their unreasonable structural design leads to a large diameter of the dust cup components, resulting in a large overall diameter of the equipment, making it more laborious to use and affecting operational flexibility.

[0061] To address the aforementioned technical problems, this application provides a cleaning device. The dust cup assembly contains a first filter component and a second filter component. After the airflow enters the dust cup assembly from the air inlet, it first enters the second filter component for coarse filtration, then enters the first filter component for fine filtration, and finally flows out from the air outlet. The multi-stage filtration improves the dust removal effect. Furthermore, the first and second filter components are arranged at intervals along a first direction, which helps to reduce the diameter of the dust cup assembly, making the cleaning device smaller and easier to use.

[0062] The following is an example illustrating the application scenarios of the cleaning equipment provided in the embodiments of this application.

[0063] The cleaning equipment provided in this application embodiment can be applied to various product types, including but not limited to mite removers, mopping machines, floor scrubbers, and robotic vacuum cleaners, depending on the product type. The cleaning equipment provided in this application embodiment can be used to clean surfaces of various materials, such as flexible surfaces like bedding, sofas, and clothing, or hard surfaces like floors, tiles, and glass. This application embodiment does not specifically limit the application in this regard.

[0064] See Figures 1 to 15 As shown, this application provides a cleaning device 10, including a device body 700, a dust cup assembly 100, and a floor brush assembly 600. The floor brush assembly 600 includes a floor brush 610 that contacts the surface to be cleaned and a lower cover 620 extending axially along the device body 700. One end of the dust cup assembly 100 is connected to the lower cover 620, and the other end is connected to the device body 700, forming a long rod-shaped body body. The floor brush 610 has an air intake 611 and an air intake channel 612. One end of the air intake channel 612 communicates with the air intake 611, and the other end communicates with the dust cup assembly 100. The floor brush 610 can move on the surface to be cleaned and sucks in debris and dust through the air intake 611. The debris and dust enter the dust cup assembly 100 through the air intake channel 612 and are collected. The device body 700 extends in a first direction and is equipped with a fan 710 to provide power for the airflow of the entire machine.

[0065] The cleaning device 10 also includes a dust cup assembly 100, a first filter assembly 300, and a second filter assembly 500; the length direction of the dust cup assembly 100 is a first direction; the first filter assembly 300 and the second filter assembly 500 are disposed inside the dust cup assembly 100 and are arranged at intervals along the first direction.

[0066] It should be noted that the dust cup assembly 100 is cylindrical, and the first filter assembly 300 and the second filter assembly 500 are arranged at intervals along the length of the dust cup assembly 100, making the dust cup assembly 100 form a slender rod with a smaller diameter. When cleaning, the angle between the long rod formed by the dust cup assembly 100 and the main body of the equipment 700 and the floor brush 610 is constantly changing due to the cleaning action. The smaller the diameter of the long rod formed by the dust cup assembly 100 and the main body of the equipment 700, the greater the flexibility of use, and the easier and less strenuous it is for cleaning personnel to drag.

[0067] The dust cup assembly 100 has an air inlet 140 and an air outlet 150 at both ends along the first direction. The airflow entering the dust cup assembly 100 from the air inlet 140 flows through the second filter assembly 500 and the first filter assembly 300 in sequence, and flows out from the air outlet 150. The second filter assembly 500 is a coarse filter, and the first filter assembly 300 is a fine filter.

[0068] Understandably, during cleaning by the cleaning device 10, the airflow carrying dust and debris enters the dust cup assembly 100 from the air inlet 140. Since dust and debris vary in size, using a single filter can easily cause clogging. By setting up a second filter assembly 500 for initial coarse filtration, larger debris and dust particles can be intercepted, thus delaying the clogging time of the filter units in the first filter assembly 300 and reducing the frequency of cleaning the dust cup assembly 100. Furthermore, the multi-stage filtration formed by the second filter assembly 500 and the first filter assembly 300 provides better dust and air separation compared to a single filter.

[0069] See Figure 5 The second filter assembly 500 includes an annular support 510 and a filter screen 520; the filter screen 520 is connected to the annular support 510 and is arranged around the annular support 510 to form a filter chamber 530; the filter chamber 530 is open at one end facing the air inlet 140 and covers the air inlet 140.

[0070] Understandably, the second filter assembly 500 has axial air intake and lateral air exhaust. The filter screen 520 covers the side, providing a larger filtration area and higher ventilation efficiency. The side of the second filter assembly 500 away from the air inlet 140 is a sealed surface, ensuring that airflow exits from the side. The opening of the second filter assembly 500 covers the air inlet 140, guaranteeing that airflow passes through the filter screen 520.

[0071] As one possible implementation, the annular support 510 is coaxially arranged with the dust cup assembly 100; there is a ventilation gap between the outer side of the filter screen 520 and the inner sidewall of the dust cup assembly 100; the airflow entering the filter chamber 530 from the air inlet 140 passes through the filter screen 520 and enters the ventilation gap.

[0072] Understandably, the ventilation gap surrounds the annular support 510 and extends along the first direction, with its height matching that of the annular support 510. Airflow through the ventilation gap can flow smoothly to downstream components, ensuring energy transfer efficiency.

[0073] As one possible implementation, the annular bracket 510 is provided with a support rib 511 on its periphery. The support rib 511 protrudes relative to the filter screen 520 toward the inner wall of the dust cup assembly 100 and abuts against the inner wall of the dust cup assembly 100, so that a ventilation gap is formed between the filter screen 520 and the inner wall of the dust cup assembly 100.

[0074] It should be noted that there are multiple support ribs 511, which are arranged at intervals around the annular bracket 510 and extend along the first direction. The protrusion height of the support ribs 511 relative to the annular bracket 510 determines the width of the ventilation gap.

[0075] In some embodiments, the filter screen 520 can be multiple pieces, which can be detachably installed between two support ribs 511. When clogged, the filter screen 520 can be removed for cleaning.

[0076] As one possible implementation, the air inlet 140 is provided with a dust baffle, and the dust baffle covers the inner side of the air inlet 140; the dust baffle can be folded inward toward the dust cup assembly 100 under the action of airflow to open the air inlet 140; the projection of the second filter assembly 500 along the first direction covers the dust baffle.

[0077] It should be noted that the air inlet 140 is connected to the suction channel 612. The area of ​​the air inlet 140 is smaller than the area of ​​the dust baffle. One side of the dust baffle can be rotatably connected to the bottom wall of the dust cup assembly 100. When the suction port 611 of the floor brush 610 is sucking air, the airflow carries dust and debris through the suction channel 612 to the air inlet 140. Since the driving force of the airflow is greater than the weight of the dust baffle, the dust baffle is pushed by the airflow to fold inward to the dust cup assembly 100 to open the air inlet 140. When the fan 710 is turned off, the dust baffle closes the air inlet 140 under the action of gravity to prevent dust and debris from falling back into the suction channel 612.

[0078] The second filter assembly 500 is projected along the first direction to cover the dustproof sheet, and the dustproof sheet is located in the filter chamber 530 of the second filter assembly 500 when it is open or closed.

[0079] As one possible implementation, the cleaning device 10 also includes a spiral guide 200, which is disposed between the first filter assembly 300 and the second filter assembly 500; the airflow from the second filter assembly 500 enters the spiral guide 200 and forms a spiral airflow to separate dust particles from the airflow.

[0080] See Figure 3In some embodiments, the spiral guide 200 includes an intermediate shaft 210 and a plurality of guide vanes 220, the intermediate shaft 210 extending along a first direction and the plurality of guide vanes 220 arranged around the intermediate shaft 210.

[0081] It should be noted that the intermediate shaft 210 can serve as a mounting base and support for the guide vane 220, and rotates together with the guide vane 220. The guide vane 220 is arc-shaped. When airflow passes through the guide vane 220, the arc-shaped blades can apply a continuous, tangential force to the axial airflow. As the airflow flows along the arc-shaped surface of the blades, it is forced to change direction, transforming from axial motion to helical motion. The airflow can drive the guide vane 220 to rotate, and the rotating guide vane 220 simultaneously enhances the helical motion of the airflow, thereby improving energy conversion efficiency.

[0082] See Figure 4 In some other embodiments, the air inlet side of the spiral guide 200 has an air guide surface 230 that extends spirally with a first direction as the axis, and the end of the air guide surface 230 has a vent, from which the spiral airflow flows toward the first filter assembly 300.

[0083] It should be noted that after the airflow enters from the air inlet side of the spiral guide 200, the airflow will spiral up along the guide surface 230. The guide surface 230 can apply a continuous tangential force to the axial airflow. When the airflow rises along the guide surface 230, it is forced to change direction, changing from axial motion to spiral motion.

[0084] As one possible implementation, the first filter assembly 300 includes an air riser 310 and a first filter unit 320; the air riser 310 is coaxially arranged with the spiral guide 200 and its axis is parallel to the first direction; the first filter unit 320 is arranged around the air riser 310.

[0085] During operation, the fan 710 starts, and the airflow carries up dust and debris from the surface to be cleaned. The airflow enters the main body 700 of the cleaning device 10 from the floor brush 610. The airflow forms a cyclone after passing through the spiral guide 200 and spirals upward in the dust cup assembly 100. Due to the high density of dust, it will accumulate near the inner side wall of the dust cup assembly under the action of centrifugal force, making it easier to contact the first filter unit 320. The airflow spirals upward through the spiral guide 200 and enters the first filter assembly 300. The spiral upward airflow separates the dust particles from the airflow. After being filtered, the dust can be collected in the cavity of the dust cup assembly 100. The airflow continues to flow towards the fan 710 after passing through the first filter element 321.

[0086] Understandably, the riser pipe 310 is inserted in the middle of the first filter unit 320, and has an opening 3121 at the end facing the spiral guide 200. When the first filter unit 320 is working normally, as the airflow spirals upward, dust is concentrated on the outer layer of the cyclone, comes into contact with the first filter unit 320 and is isolated. The airflow continues to pass through the first filter unit 320, and a small portion of clean gas in the middle of the cyclone can pass through the opening 3121. When the first filter unit 320 is blocked due to continuous operation, the airflow can pass directly through the opening 3121 of the riser pipe 310, preventing damage to the fan 710. At the same time, there is a gap between the opening 3121 and the air outlet side of the spiral guide 200, which can prevent dust from directly entering the opening 3121 without sufficient centrifugation.

[0087] See Figure 6 , Figure 9 , Figure 10 and Figure 12 The riser pipe 310 includes a mounting bracket 311 and a ventilation pipe body 312; the ventilation pipe body 312 is axially open at both ends, and the opening 3121 is located at the downward end of the ventilation pipe body 312, that is, the opening 3121 is the air inlet end of the ventilation pipe body 312; the mounting bracket 311 is connected to the air outlet end of the ventilation pipe body 312, and the air inlet end of the ventilation pipe body 312 protrudes downward relative to the mounting bracket 311, and the mounting bracket 311 is connected to the inner wall of the dust cup assembly 100; the first filter unit 320 is arranged around the periphery of the ventilation pipe body 312, and the first filter unit 320 is blocked on the side of the mounting bracket 311 facing the spiral guide 200.

[0088] See Figure 1 , Figure 2 and Figure 6 In some embodiments, the first filtration unit 320 includes filter paper 323, which is attached to the side of the mounting bracket 311 facing the spiral guide 200; the mounting bracket 311 has ventilation holes, and the filter paper 323 covers the ventilation holes.

[0089] It should be noted that the ventilation holes penetrate the mounting bracket 311, connecting the upper and lower spaces of the mounting bracket 311. There are multiple ventilation holes, which are spaced apart along the annular surface at the bottom of the mounting bracket 311. The annular surface at the bottom of the mounting bracket 311 is the side of the mounting bracket 311 facing the spiral guide 200. The filter paper 323 is attached to the annular surface at the bottom of the mounting bracket 311 and covers all the ventilation holes. When the airflow rises and reaches the filter paper 323, the dust is blocked by the filter paper 323, and the airflow passes through the filter paper 323 and then through the ventilation holes, completing the dust-air separation.

[0090] See Figure 7 and Figure 8In other embodiments, the first filter unit 320 includes a filter element 321 that fills the space between the outer wall of the ventilation duct 312 and the inner wall of the dust cup assembly 100; along a first direction, the thickness of the filter element 321 is less than or equal to the length of the ventilation duct 312.

[0091] It is understandable that the filter element 321 can be filter cotton, which can trap dust while allowing airflow to pass through. In addition, the thickness of the filter element 321 is less than or equal to the length of the ventilation duct 312, that is, the bottom surface of the filter element 321 is higher than or flush with the opening 3121 of the riser pipe 310. When the airflow reaches the bottom surface of the first filter unit 320, it can only pass through the first filter unit 320 and will not flow radially along the dust cup assembly 100 to the opening 3121 of the riser pipe 310.

[0092] See Figure 9 and Figure 10 The end face of the mounting bracket 311 facing the spiral guide 200 surrounds the ventilation duct 312, and the end face of the mounting bracket 311 facing the spiral guide 200 is provided with a plurality of first ventilation holes 3111, and the upper end face of the filter element 321 covers the first ventilation holes 3111; and / or, the side wall of the ventilation duct 312 is provided with a plurality of second ventilation holes 3122 connecting its inner and outer sides, and the inner side wall of the filter element 321 covers the second ventilation holes 3122.

[0093] As one possible implementation, the annular bottom surface of the mounting bracket 311 is provided with multiple first ventilation holes 3111. After the airflow is filtered by the filter element 321, it can continue to rise without changing the flow direction and pass directly through the first ventilation holes 3111, making the air path smoother.

[0094] As one possible implementation, the ventilation duct 312 has multiple second ventilation holes 3122 connecting its inner and outer sides on its sidewall. The ventilation duct 312 can be made relatively long, and its sidewall can have more second ventilation holes 3122, thereby increasing the contact area between the filter element 321 and the second ventilation holes 3122 and improving the ventilation efficiency. In this embodiment, after the airflow is filtered by the filter element 321, it enters the ventilation duct 3122 through the second ventilation holes 3122 and then continues to rise.

[0095] As one possible implementation, the annular bottom surface of the mounting bracket 311 is provided with multiple first ventilation holes 3111, while the side wall of the ventilation pipe 312 is provided with multiple second ventilation holes 3122. After being filtered by the filter element 321, part of the airflow passes through the first ventilation holes 3111 and the other part of the airflow passes through the second ventilation holes 3122, thus further increasing the ventilation efficiency.

[0096] It should be noted that when the side wall of the ventilation duct 312 is provided with multiple second ventilation holes 3122, the bottommost second ventilation hole 3122 is spaced apart from the air inlet end of the ventilation duct 312. At the same time, the bottommost second ventilation hole 3122 is higher than the bottom end of the filter element 321 and is spaced apart from the bottom end of the filter element 321. That is, in the first direction, the bottom end of the filter element 321 is located between the bottommost second ventilation hole 3122 and the air inlet end of the ventilation duct 312. In this way, it can be ensured that the airflow is fully filtered before entering the second ventilation hole 3122.

[0097] See Figure 11 , Figure 12 and Figure 13 In some other embodiments, the first filter unit 320 includes a dust collection box 322, which includes a box body 3221 and an adsorbent material 3222 disposed within the box body 3221. The shape of the box body 3221 matches the shape of the space between the outer wall of the ventilation duct 312 and the inner wall of the dust cup assembly 100. The end face of the box body 3221 facing the spiral guide 200 is provided with a dust inlet 3223.

[0098] It should be noted that the storage box is annular and fitted onto the ventilation duct 312. The inner and outer walls of the storage box abut against the outer wall of the ventilation duct 312 and the inner wall of the dust cup assembly 100, respectively, with an interference fit, thereby reducing the gap between the storage box and the outer wall of the ventilation duct 312 and the inner wall of the dust cup assembly 100. The bottom surface of the storage box, i.e., the end face of the box body 3221 facing the spiral guide 200, is higher than or flush with the air inlet end of the ventilation duct 312, preventing turbulent airflow from causing dust to directly enter the ventilation duct 312. During operation, airflow enters the box body 3221 through the dust inlet 3223, the adsorption material 3222 adsorbs the dust in the airflow, and clean gas passes through the gaps in the adsorption material 3222, achieving dust-gas separation.

[0099] Among them, the adsorbent material 3222 can be a material with adsorption properties such as silica gel balls, zeolite, and activated carbon.

[0100] It should be noted that the cleaning assembly also includes a second filter unit 400, which is located on the side of the riser pipe 310 away from the spiral guide 200; the second filter unit 400 can filter dust particles smaller than the dust particles filtered by the first filter unit 320.

[0101] The second filter unit 400 can be a HEPA filter assembly. The HEPA filter assembly is located on the upper side of the pipe support and completely seals the cross-section of the receiving cavity. The airflow that has been centrifuged and filtered by the first filter unit 320 may still carry small dust particles. After the airflow passes through the ventilation hole or ventilation duct 312, it flows through the HEPA filter assembly, which can further filter out small dust particles and improve the cleanliness of the airflow. After being filtered by the second filter unit 400, the airflow continues to rise and flows to the fan 710.

[0102] In one possible implementation, the dust cup assembly 100 includes a first cup body 110 and a second cup body 120, which are joined together in a first direction; a first filter assembly 300 is disposed in the first cup body 110, and a second filter assembly 500 and a spiral guide 200 are disposed in the second cup body 120; there is a gap between the air inlet end of the riser pipe 310 and the air outlet end of the spiral guide 200.

[0103] It should be noted that there is a gap between the first filter component 300 and the spiral guide 200 along the first direction. In this way, after the airflow starts to swirl through the spiral guide 200, it will not directly enter the first filter component 300, but will have a certain spiral upward space so that the dust and air can be fully separated.

[0104] It should be noted that the lower end of the first cup 110 is detachably connected to the upper end of the lower cover 620 of the machine body, the lower end of the second cup 120 is detachably connected to the upper end of the first cup 110, and the lower end of the main body 700 is detachably connected to the upper end of the second cup 120. During cleaning, the dust cup assembly 100 can be disassembled, along with the first and second cups 110, for cleaning of the internal components. The spiral guide 200 is connected to the end of the second filter assembly 500 opposite to the air inlet 140. The top sealing surface of the second filter assembly 500 has an installation notch. The intermediate shaft 210 of the spiral guide 200 can be snapped or threaded into the installation notch. When the spiral guide 200 is pulled out, the second filter assembly 500 can be pulled out and cleaned. Waste, debris, and dust are collected at the bottom of the second cup 120 and can be emptied.

[0105] The second cup body 120 has an air inlet 140 at the end opposite to the first cup body 110. The air inlet 140 is provided with an openable and closable baffle 130. The projection of the second filter assembly 500 along the first direction covers the baffle 130.

[0106] It should be noted that the baffle 130 can only open and close into the second cup 120. When the motor is working, the fan 710 starts, and the airflow can force open the baffle 130, opening the air inlet 140, allowing garbage and dust to enter the second cup 120. When the motor is off, without the support of the airflow, the baffle 130 closes the air inlet 140 under the action of gravity, preventing garbage and dust from flowing back from the air inlet 140 into the floor brush 610.

[0107] See Figure 14 and Figure 15 In some embodiments, the first filter assembly 300 includes a riser pipe 310 and a second filter unit 400; the second filter unit 400 is disposed at the air outlet end of the riser pipe 310; the spiral guide 200 includes a housing 330 and spiral blades 340, with the air inlet end of the housing 330 facing the first filter assembly 300; the air inlet end of the riser pipe 310 is at least partially inserted into the interior of the housing 330 from the air inlet end of the housing 330; the spiral blades 340 are disposed between the inner wall of the housing 330 and the outer wall of the riser pipe 310, and there are multiple spiral blades 340 arranged circumferentially around the ventilation duct 312. The housing 330, the riser pipe 310, and the spiral blades 340 are integrally formed.

[0108] In this embodiment, the dust cup assembly 100 has only one cup body, and the first filter assembly 300 and the second filter assembly 500 are disposed in the same cup body. The outer shell 330 of the first filter assembly 300 is coaxially disposed with the dust cup assembly 100, and there is a gap between the outer wall of the outer shell 330 and the inner wall of the dust cup assembly 100 to form a guide air duct 350 for airflow. The airflow entering the dust cup assembly 100 from the air inlet 140 flows along the length direction of the dust cup assembly 100 through the guide air duct 350 to the air inlet end of the outer shell 330.

[0109] It should be noted that the end of the mounting bracket 311 facing the outer casing 330 has a windproof surface 3112. The airflow from the guide duct 350 is guided by the windproof surface 3112 and the outer wall of the ventilation pipe 312, and then turns and flows into the air inlet of the outer casing 330.

[0110] It should be noted that the ventilation duct 312 has an opening 3121 facing the bottom wall of the outer casing 330, and there is a gap between the opening 3121 and the bottom wall of the outer casing 330.

[0111] It should be noted that after the airflow enters the dust cup assembly 100 through the air inlet 140, it rises axially along the dust cup assembly 100. Upon reaching the air inlet end of the outer casing 330, the airflow direction changes, and it descends axially along the outer casing 330. A spiral blade 340 is provided between the inner wall of the outer casing 330 and the outer wall of the riser pipe 310. The spiral blade 340 has the portion of the riser pipe 310 extending into the outer casing 330 as its intermediate axis 210. There are multiple spiral blades 340, and the blades are arc-shaped. When the airflow passes through the spiral blades 340, the arc-shaped blades can apply a continuous, tangential force to the axial airflow. As the airflow flows along the arc-shaped surface of the blades, it is forced to change direction, transforming from axial motion to spiral motion. The airflow can drive the spiral blades 340 to rotate around the riser pipe 310. The rotating spiral blades 340 simultaneously enhance the spiral motion of the airflow, thereby improving energy conversion efficiency.

[0112] After the axial airflow is converted into spiral motion by the spiral blades 340, the dust particles in the airflow, due to their higher density, will concentrate on the outer layer of the spiral airflow under the action of centrifugal force and collide with the inner wall of the outer casing 330, thereby gradually losing kinetic energy. Under the action of gravity and inertia, they will continue to move downward until they reach the bottom wall of the outer casing 330 and finally stay on the bottom wall of the outer casing 330. Due to the pressure difference, the airflow will enter from the air inlet of the riser pipe 310 and flow out of the outer casing 330. In this way, the initial dust-air separation is achieved. At this time, the gas still carries small dust particles. The gas flowing out of the outer casing 330 will finally pass through the second filter unit 400 for filtration. The second filter unit 400 can be a HEPA filter, which can adsorb small dust particles and make the gas at the final outlet cleaner.

[0113] It should be noted that a dust-blocking component 331 is provided on the bottom wall inside the outer casing 330, and the dust-blocking component 331 protrudes towards the ventilation duct 312; the top end of the dust-blocking component 331 is opposite to the opening 3121 and there is a gap between them. The dust-blocking component 331 includes a connecting part 3311 and a dust-blocking part 3312. The first end of the connecting part 3311 is connected to the bottom wall of the outer casing 330, and the dust-blocking part 3312 is connected to the second end of the connecting part 3311; the projection of the dust-blocking part 3312 along the length direction of the dust cup assembly 100 covers the opening 3121.

[0114] Understandably, when the dust-laden airflow collides with the bottom wall, some dust will be thrown up above the bottom wall and easily enter the opening 3121 with the airflow. Therefore, a dust baffle 331 is provided on the bottom wall inside the outer casing 330. The dust baffle portion 3312 of the dust baffle 331 can block the thrown-up dust and prevent it from entering the opening 3121. At the same time, the dust baffle portion 3312 is convex from the edge of the dust baffle portion 3312 toward the center of the dust baffle portion 3312 on the side facing the opening 3121, so as to form a guide slope 3313 that guides the airflow to the opening 3121. The airflow can enter the opening 3121 along the guide slope 3313 under the action of pressure difference, realizing dust and gas separation.

[0115] This application provides a cleaning device 10, including a dust cup assembly 100, a first filter assembly 300, and a second filter assembly 500. The length direction of the dust cup assembly 100 is a first direction. The first filter assembly 300 and the second filter assembly 500 are disposed inside the dust cup assembly 100 and arranged at intervals along the first direction. The dust cup assembly 100 has an air inlet 140 and an air outlet 150 at its two ends along the first direction, respectively. Airflow entering the dust cup assembly 100 from the air inlet 140 flows sequentially through the second filter assembly 500 and the first filter assembly 300, and flows out from the air outlet 150. The second filter assembly 500 is a coarse filter, and the first filter assembly 300 is a fine filter. The cleaning device 10 provided by this application improves the filtration effect through multi-stage filtration, and at the same time optimizes the structure of the dust cup assembly 100, making the device body thinner and easier to use.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cleaning device, characterized in that, The cleaning device (10) includes a dust cup assembly (100), a first filter assembly (300), and a second filter assembly (500); the length direction of the dust cup assembly (100) is a first direction; the first filter assembly (300) and the second filter assembly (500) are disposed inside the dust cup assembly (100) and are arranged at intervals along the first direction; The dust cup assembly (100) has an air inlet (140) and an air outlet (150) at both ends along the first direction. The airflow entering the dust cup assembly (100) from the air inlet (140) flows sequentially through the second filter assembly (500) and the first filter assembly (300), and flows out from the air outlet (150). The second filter assembly (500) is a coarse filter, and the first filter assembly (300) is a fine filter.

2. The cleaning equipment according to claim 1, characterized in that, The second filter assembly (500) includes an annular support (510) and a filter screen (520); the filter screen (520) is connected to the annular support (510) and is arranged around the annular support (510) to form a filter chamber (530). The filter chamber (530) is open at one end facing the air inlet (140) and covers the air inlet (140).

3. The cleaning equipment according to claim 2, characterized in that, The annular support (510) is coaxially arranged with the dust cup assembly (100); there is a ventilation gap between the outer side of the filter screen (520) and the inner sidewall of the dust cup assembly (100); the airflow entering the filter chamber (530) from the air inlet (140) passes through the filter screen (520) and enters the ventilation gap.

4. The cleaning equipment according to claim 3, characterized in that, The annular bracket (510) is provided with a support rib (511) on its periphery. The support rib (511) protrudes toward the inner wall of the dust cup assembly (100) relative to the filter screen (520) and abuts against the inner wall of the dust cup assembly (100) so that the ventilation gap is formed between the filter screen (520) and the inner wall of the dust cup assembly (100).

5. The cleaning equipment according to any one of claims 1-4, characterized in that, The air inlet (140) is provided with a dust baffle, and the dust baffle covers the inside of the air inlet (140); the dust baffle can be folded inward to the dust cup assembly (100) under the action of airflow to open the air inlet (140); the projection of the second filter assembly (500) along the first direction covers the dust baffle.

6. The cleaning equipment according to any one of claims 1-4, characterized in that, The cleaning device (10) further includes a spiral guide (200) disposed between the first filter assembly (300) and the second filter assembly (500); the airflow from the second filter assembly (500) enters the spiral guide (200) and forms a spiral airflow to separate dust particles from the airflow.

7. The cleaning equipment according to claim 6, characterized in that, The first filter assembly (300) includes an air riser (310) and a first filter unit (320); the air riser (310) is coaxially arranged with the spiral guide (200) and its axial direction is parallel to the first direction; the first filter unit (320) is arranged around the air riser (310).

8. The cleaning equipment according to claim 7, characterized in that, The dust cup assembly (100) includes a first cup body (110) and a second cup body (120), which are connected along the first direction; the first filter assembly (300) is disposed in the first cup body (110), and the second filter assembly (500) and the spiral guide (200) are disposed in the second cup body (120); there is a gap between the air inlet end of the riser pipe (310) and the air outlet end of the spiral guide (200).

9. The cleaning equipment according to claim 6, characterized in that, The first filter assembly (300) includes a riser pipe (310) and a second filter unit (400); the second filter unit (400) is disposed at the air outlet end of the riser pipe (310); the spiral guide (200) includes a housing (330) and spiral blades (340), with the air inlet end of the housing (330) facing the first filter assembly (300); the air inlet end of the riser pipe (310) is at least partially inserted into the interior of the housing (330) from the air inlet end of the housing (330); the spiral blades (340) are disposed between the inner wall of the housing (330) and the outer wall of the riser pipe (310).

10. The cleaning equipment according to claim 6, characterized in that, The spiral guide (200) is connected to the end of the second filter assembly (500) away from the air inlet (140).

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