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 and a first filter assembly; the first filter assembly is arranged in the dust cup assembly; dust-gas mixed fluid entering the dust cup assembly can form a spiral airflow and enter the first filter assembly; the first filter assembly comprises a gas lifting pipe and a filter piece, the filter piece is arranged around the gas lifting pipe, and the filter piece fills the space between the outer wall of the gas lifting pipe and the inner wall of the dust cup assembly; the filter piece has an air inlet surface and an air outlet surface, the air inlet surface faces one side where the airflow of the first filter assembly enters, the air outlet surface is in contact with the surface of the gas lifting pipe and is communicated with the gas lifting pipe, so that the spiral airflow can pass through the gas lifting pipe after passing through the filter piece, and the filter piece is used for filtering dust particles in the spiral airflow. The cleaning device provided by the application centrifugally separates dust through the spiral airflow, so that the dust can be concentrated to pass through the filter piece for filtration, and the dust removal efficiency is improved.

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, as a suction port, can suck up dust from the surface to be cleaned. The airflow carrying dust enters the dust cup radially and rotates through the cyclone separation structure, thereby generating centrifugal force to separate dust and air.

[0004] However, currently, dust cups only separate dust and gas through centrifugal force, resulting in low dust removal efficiency. Utility Model Content

[0005] This application provides a cleaning device to solve the technical problem that the current dust cups only separate dust and gas through centrifugal force, resulting in low dust removal efficiency.

[0006] This application provides a cleaning device, including a dust cup assembly and a first filter assembly; the first filter assembly is disposed inside the dust cup assembly; the dust-air mixture entering the dust cup assembly can form a spiral airflow and enter the first filter assembly.

[0007] The first filter assembly includes a riser pipe and a filter element. The filter element is arranged around the riser pipe and fills the space between the outer wall of the riser pipe and the inner wall of the dust cup assembly. The filter element has an inlet surface and an outlet surface. The inlet surface faces the side where the airflow enters the first filter assembly, and the outlet surface contacts the surface of the riser pipe and communicates with the riser pipe so that the spiral airflow can pass through the riser pipe after passing through the filter element. The filter element is used to filter dust particles in the spiral airflow.

[0008] The cleaning equipment provided in this application includes a dust cup assembly and a first filter assembly. The first filter assembly is disposed inside the dust cup assembly. Before the dust-air mixture enters the first filter assembly, a spiral airflow is formed. Due to the high density of dust, the dust is concentrated on the outer layer of the spiral airflow under the action of centrifugal force. The first filter assembly includes a riser pipe and a filter element. The filter element is arranged around the riser pipe. In this way, the outer layer of the spiral airflow mainly passes through the filter element. The outer layer of the spiral airflow carries a large amount of dust, which can be filtered by the filter element, greatly improving the dust removal efficiency.

[0009] As an alternative implementation, the filter element is annular, with its inner wall in contact with the outer wall of the riser pipe and its outer wall in contact with the inner wall of the dust cup assembly.

[0010] This configuration ensures that the filter element is in contact with the inner walls of the riser pipe and dust cup assembly, reducing the gap between the filter element and the inner walls of the riser pipe and dust cup assembly, and preventing gas leakage.

[0011] As an optional implementation, the riser includes a mounting bracket and a ventilation duct body; the ventilation duct body is axially continuous at both ends; the mounting bracket is connected to the air outlet end of the ventilation duct body and is abutted against the inner wall of the dust cup assembly; the filter element is arranged around the periphery of the ventilation duct body.

[0012] This configuration provides support for the first filter unit through the ventilation duct and mounting bracket, thus improving structural stability.

[0013] As an optional implementation, the mounting bracket has a first end face surrounding the ventilation duct body, the first end face is provided with a plurality of first ventilation holes, and the air outlet surface includes the surface of the filter element facing away from the air inlet surface, the air outlet surface abutting against the first end face.

[0014] With this configuration, the airflow, after being filtered by the filter, can pass through the riser pipe from the first ventilation hole, making the air path smoother.

[0015] As an optional implementation, the side wall of the ventilation duct is provided with a second ventilation hole, and the inner side wall of the filter element covers the second ventilation hole.

[0016] With this configuration, the airflow, after being filtered by the filter, can pass through the second ventilation hole and the riser pipe, making the air path smoother.

[0017] As an optional implementation, there are multiple second ventilation holes, which are circumferentially spaced on the side wall of the ventilation duct; the distribution area of ​​the multiple second ventilation holes is close to the end of the ventilation duct that is connected to the mounting bracket.

[0018] This configuration, by placing the distribution area of ​​multiple second ventilation holes near the end where the ventilation duct connects to the mounting bracket, can extend the airflow path in the filter element and improve the filtration effect.

[0019] As an optional implementation, the end of the ventilation duct facing the airflow entering the first filter assembly has an opening; along the axial direction of the ventilation duct, the air inlet surface is positioned higher than the opening and lower than the second ventilation hole.

[0020] This design, by adjusting the height of the air inlet surface, ensures filtration effectiveness while preventing airflow from directly entering the opening.

[0021] As an optional implementation, the dust cup assembly extends along a first direction, and the fluid entering the dust cup assembly flows along the first direction; wherein, the first direction is the length direction of the cleaning device.

[0022] The cleaning equipment also includes a second filter assembly disposed within the dust cup assembly; the second filter assembly and the first filter assembly are spaced apart along a first direction, and the second filter assembly is located upstream of the first filter assembly in the airflow direction.

[0023] This configuration, with the first and second filter components forming a two-stage filtration system, improves the filtration effect while preventing the filter components from clogging.

[0024] As an optional implementation, the cleaning device also includes a spiral guide, which is disposed within the dust cup assembly; the spiral guide is located between the first filter assembly and the second filter assembly; the spiral guide is used to form a spiral airflow.

[0025] This configuration, through the spiral guide to form a spiral airflow, can separate dust using centrifugal force, thus improving the dust-air separation effect.

[0026] As an optional implementation, the spiral guide is coaxially arranged with the riser pipe, and the projected profile of the spiral guide along the first direction covers the riser pipe.

[0027] This design facilitates the upward movement of the spiral airflow while ensuring that dust on the outer layer of the cyclone can enter the dust collection box.

[0028] This application provides a cleaning device, including a dust cup assembly and a first filter assembly. The first filter assembly is disposed within the dust cup assembly. Dust-air mixture entering the dust cup assembly forms a spiral airflow and enters the first filter assembly. The first filter assembly includes a riser pipe and a filter element. The filter element surrounds the riser pipe and fills the space between the outer wall of the riser pipe and the inner wall of the dust cup assembly. The filter element has an inlet surface and an outlet surface. The inlet surface faces the side where the airflow enters the first filter assembly, and the outlet surface contacts the surface of the riser pipe and communicates with the riser pipe, so that the spiral airflow can pass through the riser pipe after passing through the filter element. The filter element is used to filter dust particles in the spiral airflow. The cleaning device of this application centrifuges dust through the spiral airflow, so that the dust can be concentrated and passed through the filter element for filtration, thereby improving dust removal efficiency.

[0029] 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

[0030] 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.

[0031] Figure 1 A schematic diagram of a cleaning device with a spiral structure as a guide vane, provided in an embodiment of this application;

[0032] 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;

[0033] Figure 3 A schematic diagram of a spiral guide with a guide vane as the spiral structure provided in an embodiment of this application;

[0034] 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;

[0035] Figure 5 This is a schematic diagram of the structure of the second filtering component provided in an embodiment of this application;

[0036] 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;

[0037] Figure 7 A schematic diagram of the structure of a cleaning device with a filter element provided in an embodiment of this application;

[0038] 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;

[0039] 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;

[0040] Figure 10 A schematic diagram of a riser pipe with a second ventilation hole provided in an embodiment of this application;

[0041] Figure 11 A schematic diagram of the structure of a cleaning device with a dust collection box provided in an embodiment of this application;

[0042] 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;

[0043] Figure 13This is a schematic diagram of the structure of the dust collection box provided in an embodiment of this application.

[0044] Explanation of reference numerals in the attached figures:

[0045] 10- Cleaning equipment;

[0046] 100 - Dust cup assembly; 110 - First cup body; 120 - Second cup body; 130 - Dust baffle; 140 - Air inlet; 150 - Air outlet;

[0047] 200 - Spiral guide vane; 210 - Intermediate shaft; 220 - Guide vane; 230 - Air guide surface;

[0048] 300 - First filter assembly; 310 - Air riser pipe; 311 - Mounting bracket; 3111 - First ventilation hole; 312 - Ventilation pipe 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;

[0049] 400 - Second Filter Unit;

[0050] 500 - Second filter assembly; 510 - Annular support; 511 - Support rib; 520 - Filter screen; 530 - Filter chamber;

[0051] 600 - Floor brush assembly; 610 - Floor brush; 611 - Air intake; 612 - Air intake channel; 620 - Lower cover of the unit;

[0052] 700 - Main body of equipment; 710 - Fan. Detailed Implementation

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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 devices typically include a floor brush and a dust cup. The floor brush sucks in dust from the surface through a suction port, and the airflow carrying the dust enters the dust cup radially. There, a cyclone separator generates rotation, creating centrifugal force to separate the dust from the air.

[0059] However, currently, dust cups only separate dust and gas through centrifugal force. Under the condition of a certain fan power, the generated centrifugal force can only separate larger particles, and it is difficult to separate some smaller particles with lower density, resulting in low dust removal efficiency.

[0060] To address the aforementioned technical problems, this application provides a cleaning device including a dust cup assembly and a first filter assembly. The first filter assembly is disposed within the dust cup assembly. Before the dust-air mixture enters the first filter assembly, a spiral airflow is formed. Due to the high density of dust, it concentrates on the outer layer of the spiral airflow under centrifugal force. The first filter assembly includes a riser pipe and a filter element, which surrounds the riser pipe. Thus, the outer layer of the spiral airflow mainly passes through the filter element, and since the outer layer of the spiral airflow carries a large amount of dust, it can be filtered by the filter element, greatly improving the dust removal efficiency.

[0061] The following is an example illustrating the application scenarios of the cleaning equipment provided in the embodiments of this application.

[0062] The cleaning equipment provided in this application embodiment may include, but is not limited to, mite removers, mopping machines, floor scrubbers, and robot 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 materials like bedding, sofas, and clothing, or hard materials like floors, tiles, and glass. This application embodiment does not specifically limit the scope of the cleaning equipment.

[0063] See Figures 1 to 13 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.

[0064] The cleaning device 10 also includes a dust cup assembly 100 and a first filter assembly 300; the first filter assembly 300 is disposed within the dust cup assembly 100; the dust-air mixture entering the dust cup assembly 100 can form a spiral airflow and enter the first filter assembly 300.

[0065] See Figure 7 and Figure 8 The first filter assembly 300 includes a riser pipe 310 and a filter element 321. The filter element 321 is arranged around the riser pipe 310 and fills the space between the outer wall of the riser pipe 310 and the inner wall of the dust cup assembly 100. The filter element 321 has an air inlet surface and an air outlet surface. The air inlet surface faces the side where the airflow of the first filter assembly 300 enters, and the air outlet surface contacts the surface of the riser pipe 310 and communicates with the riser pipe 310 so that the spiral airflow can pass through the riser pipe 310 after passing through the filter element 321. The filter element 321 is used to filter dust particles in the spiral airflow.

[0066] It is understandable that after the dust-air mixture fluid entering the dust cup assembly 100 forms a spiral airflow, since the density of dust is greater than that of air, the dust mainly concentrates on the outer layer of the spiral airflow under the action of centrifugal force. The filter element 321 is arranged around the riser pipe 310. When the spiral airflow comes into contact with the first filter assembly 300, the concentrated dust mainly comes into contact with the filter element 321. After being filtered by the filter element 321, dust-air separation is achieved.

[0067] It should be noted that the filter element 321 can be a flexible filter material such as filter cotton, and is in the shape of a ring. The space between the outer wall of the riser pipe 310 and the inner wall of the dust cup assembly 100 is also ring-shaped. The filter element 321 fills this space, and its inner sidewall contacts the outer sidewall of the riser pipe 310, and its outer sidewall contacts the inner sidewall of the dust cup assembly 100. After being filled, the filter element 321 is in a compressed state, which makes the gaps between the inner sidewall of the filter element 321 and the outer sidewall of the riser pipe 310, as well as between the outer sidewall of the filter element 321 and the inner sidewall of the dust cup assembly 100, very small, preventing gas from passing directly through the gaps.

[0068] 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 connected 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 filter element 321 is arranged around the periphery of the ventilation pipe body 312, and the filter element 321 is blocked on the lower end face of the mounting bracket 311.

[0069] The mounting bracket 311 can be connected to the inner wall of the dust cup assembly 100 by a snap-fit, a threaded connection, or it can be mounted on the baffle of the inner wall of the dust cup assembly 100 by gravity. This application embodiment does not make specific limitations.

[0070] For example, the side of the mounting bracket 311 has an annular recess, and the inner wall of the dust cup assembly 100 has a protrusion that matches the recess. During installation, the mounting bracket 311 is pressed so that the protrusion engages with the recess, thereby fixing the mounting bracket 311.

[0071] See Figure 9 and Figure 10In some embodiments, the mounting bracket 311 has a first end face surrounding the ventilation duct body 312. The first end face is provided with a plurality of spaced first ventilation holes 3111. The first ventilation holes 3111 penetrate the mounting bracket 311 along a first direction. The air outlet surface of the filter element 321 includes the surface of the filter element 321 facing away from the air inlet surface. The air outlet surface abuts against the first end face. Airflow enters from the air inlet surface of the filter element 321, flows directly along the first direction, is filtered, and flows out from the air outlet surface. Then, it flows out of the riser pipe 310 through the first ventilation holes 3111. After being filtered by the filter element 321, the airflow can continue to rise without changing its flow direction and passes directly through the first ventilation holes 3111, making the airflow path smoother.

[0072] In some embodiments, the sidewall of the ventilation duct 312 is provided with a second ventilation hole 3122, which penetrates the sidewall of the ventilation duct 312, and the inner sidewall of the filter element 321 covers the second ventilation hole 3122. It is understood that the filter element 321 can discharge air in all directions. When the sidewall of the ventilation duct 312 is provided with the second ventilation hole 3122, since the inner sidewall of the filter element 321 is in contact with the outer sidewall of the ventilation duct 312, the airflow enters the filter element 321 from the air inlet surface, is filtered, flows out from the inner sidewall, and enters the ventilation duct 312 through the second ventilation hole 3122, and then continues to flow in the first direction.

[0073] In one possible implementation, there are multiple second ventilation holes 3122, which are circumferentially spaced on the sidewall of the ventilation duct 312. The distribution area of ​​the multiple second ventilation holes 3122 is close to the end of the ventilation duct 312 connected to the mounting bracket 311. In this way, after the airflow enters from the air inlet surface, it can travel a certain distance in the filter element 321 before entering the second ventilation holes for thorough filtration. 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 ventilation efficiency.

[0074] In some embodiments, the first end face of the mounting bracket 311 is provided with a plurality of first ventilation holes 3111, and the side wall of the ventilation pipe 312 is provided with a plurality of second ventilation holes 3122. After being filtered by the filter element 321, part of the airflow passes through the first ventilation holes 3111 and another part of the airflow passes through the second ventilation holes 3122, thereby further increasing the ventilation efficiency.

[0075] The ventilation duct 312 has an opening 3121 at the end facing the airflow into the first filter assembly 300; along the axial direction of the ventilation duct 312, the air inlet surface is higher than the opening 3121 and lower than the second ventilation hole 3122.

[0076] It should be noted that the axial direction of the ventilation duct 312 is parallel to the first direction. Along the first direction, the thickness of the filter element 321 is less than the length of the ventilation duct 312. That is, the air inlet surface of the filter element 321 is higher than the opening 3121 of the ventilation duct 312. When the airflow reaches the filter element 321, it can only pass through the filter element 321 due to the obstruction of the ventilation duct 312, and will not flow radially along the dust cup assembly 100 to the opening 3121 of the riser pipe 310. At the same time, the air inlet surface being lower than the second ventilation hole 3122 ensures that the airflow can be fully filtered.

[0077] In some embodiments, the thickness of the filter element 321 can be equal to the length of the ventilation duct 312, that is, the air inlet surface of the filter element 321 is flush with the opening 3121 of the ventilation duct 312.

[0078] In one possible implementation, the dust cup assembly 100 extends along a first direction, the axial direction of the dust cup assembly 100 is parallel to the first direction, and the fluid entering the dust cup assembly 100 flows along the first direction; wherein, the first direction is the length direction of the cleaning device 10.

[0079] The cleaning device 10 also includes a second filter assembly 500 and a spiral guide 200. The second filter assembly 500 is disposed within the dust cup assembly 100. The second filter assembly 500 and the first filter assembly 300 are spaced apart along a first direction, and the second filter assembly 500 is located upstream of the first filter assembly 300 in the airflow direction.

[0080] The spiral guide 200 is disposed within the dust cup assembly 100; the spiral guide 200 is located between the first filter assembly 300 and the second filter assembly 500; the spiral guide 200 is used to form a spiral airflow.

[0081] See Figure 5 The second filter assembly 500 includes an annular support 510 and a filter screen 520. The annular support 510 has multiple support ribs 511 extending axially along its sides. The filter screens 520 can be installed in the recesses between adjacent support ribs 511. Multiple filter screens 520 form the sidewalls of the second filter assembly 500. The filter screens 520 are connected to the annular support 510 and form a filter cavity 530. The filter cavity 530 is open at one end facing the air inlet 140, forming an opening 3121 end, and covers the air inlet 140. The end of the annular support 510 facing the spiral guide 200 is a sealing surface, which is connected to the spiral guide 200.

[0082] During operation, multiple support protrusions abut against the inner wall of the dust cup assembly 100. The filter screen 520 and the inner wall of the dust cup assembly 100 are spaced apart. Airflow enters from the opening 3121 end. Due to the obstruction of the sealing surface, the airflow can only flow through the filter screen 520 and flows in the first direction along the gap between the filter screen 520 and the inner wall of the dust cup assembly 100, and then enters the spiral guide 200.

[0083] The mesh size of filter 520 is larger than that of the first filter unit 320. It is mainly used to intercept garbage and large dust particles, protecting subsequent filter units and preventing them from becoming clogged. Filter 520, together with the first filter unit 320 and the second filter unit 400, forms a multi-stage filtration structure, improving the overall filtration efficiency.

[0084] It should be noted that there is a gap between the first filter component 300 and the spiral guide 200 along the first direction. This allows the airflow, after swirling through the spiral guide 200, to not directly enter the first filter component 300, but rather to have a certain spiral upward space, enabling thorough separation of dust and air. The size of the gap between the first filter component 300 and the spiral guide 200 can be adjusted according to the dust and air separation effect; this embodiment does not impose a specific limitation.

[0085] See Figure 3 In 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] It should be noted that the spiral guide 200 is coaxially arranged with the riser pipe 310. The projected outline of the spiral guide 200 along the first direction covers the riser pipe 310, and the outer outline of the spiral guide 200 along the first direction covers the opening 3121. After the airflow flows out of the spiral guide 200, it forms a cyclone. Dust mainly concentrates on the outer layer of the cyclone, forming a dust ring. Along the projection of the first direction, the dust ring and the outer outline of the spiral guide 200 are located at the same position. Since the outer outline of the spiral guide 200 along the first direction covers the opening 3121, the dust ring can fall around the opening 3121 and contact the filter element 321 without entering the opening 3121.

[0090] See Figure 1 , Figure 2 and Figure 6 In some embodiments, the first filter assembly 300 includes an air riser 310 and a first filter unit 320. The first filter unit 320 includes filter paper 323, which is attached to the side of the mounting bracket 311 facing the spiral guide 200 and covers the first ventilation hole 3111.

[0091] See Figure 11 , Figure 12 and Figure 13 In some embodiments, the first filter assembly 300 includes an air riser 310 and a first filter unit 320. The first filter unit 320 includes a dust collection box 322. The dust collection box 322 includes a box body 3221 and an adsorbent material 3222 disposed in the box body 3221. The shape of the box body 3221 matches the shape of the space between the outer wall of the ventilation pipe 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.

[0092] 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.

[0093] Among them, the adsorbent material 3222 can be a material with adsorption properties such as silica gel balls, zeolite, and activated carbon.

[0094] 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.

[0095] 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.

[0096] In this way, by filtering through the second filter component 500, the first filter component 300, and the second filter unit 400 in stages, the dust removal efficiency is improved, and the clogging time of the second filter unit 400 can be delayed.

[0097] This application provides a cleaning device 10, including a dust cup assembly 100 and a first filter assembly 300. The first filter assembly 300 is disposed within the dust cup assembly 100. Dust-air mixture entering the dust cup assembly 100 forms a spiral airflow and enters the first filter assembly 300. The first filter assembly 300 includes a riser pipe 310 and a filter element 321. The filter element 321 surrounds the riser pipe 310 and fills the space between the outer wall of the riser pipe 310 and the inner wall of the dust cup assembly 100. The filter element 321 has an inlet surface and an outlet surface. The inlet surface faces the side where the airflow enters the first filter assembly 300, and the outlet surface contacts and communicates with the surface of the riser pipe 310, allowing the spiral airflow to pass through the riser pipe 310 after passing through the filter element 321. The filter element 321 filters dust particles in the spiral airflow. The cleaning device 10 of this application centrifuges dust using a spiral airflow, allowing the dust to be concentrated and filtered through the filter element 321, thus improving dust removal efficiency.

[0098] 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) and a first filter assembly (300); the first filter assembly (300) is disposed inside the dust cup assembly (100); the dust-air mixture entering the dust cup assembly (100) can form a spiral airflow and enter the first filter assembly (300). The first filter assembly (300) includes an air riser (310) and a filter element (321). The filter element (321) is arranged around the air riser (310) and fills the space between the outer wall of the air riser (310) and the inner wall of the dust cup assembly (100). The filter element (321) has an air inlet surface and an air outlet surface. The air inlet surface faces the side where the airflow enters the first filter assembly (300), and the air outlet surface contacts the surface of the air riser (310) and communicates with the air riser (310) so that the spiral airflow can pass through the air riser (310) after passing through the filter element (321). The filter element (321) is used to filter dust particles in the spiral airflow.

2. The cleaning equipment according to claim 1, characterized in that, The filter element (321) is annular, and the inner wall of the filter element (321) is in contact with the outer wall of the riser pipe (310), while the outer wall of the filter element (321) is in contact with the inner wall of the dust cup assembly (100).

3. The cleaning equipment according to claim 1, characterized in that, The riser pipe (310) includes a mounting bracket (311) and a ventilation pipe body (312); the ventilation pipe body (312) is axially connected at both ends; the mounting bracket (311) is connected to the air outlet end of the ventilation pipe body (312), and the mounting bracket (311) is connected to the inner wall of the dust cup assembly (100); the filter element (321) is arranged around the periphery of the ventilation pipe body (312).

4. The cleaning equipment according to claim 3, characterized in that, The mounting bracket (311) has a first end face surrounding the ventilation duct (312), the first end face is provided with a plurality of first ventilation holes (3111), the air outlet surface includes the surface of the filter (321) facing away from the air inlet surface, and the air outlet surface abuts against the first end face.

5. The cleaning equipment according to claim 3, characterized in that, The side wall of the ventilation duct (312) is provided with a second ventilation hole (3122), and the inner side wall of the filter element (321) covers the second ventilation hole (3122).

6. The cleaning equipment according to claim 5, characterized in that, There are multiple second ventilation holes (3122), and the multiple second ventilation holes (3122) are arranged circumferentially on the side wall of the ventilation pipe (312); the distribution area of ​​the multiple second ventilation holes (3122) is close to the end of the ventilation pipe (312) connected to the mounting bracket (311).

7. The cleaning equipment according to claim 5, characterized in that, The ventilation duct (312) has an opening (3121) at the end facing the airflow entering the first filter assembly (300); along the axial direction of the ventilation duct (312), the air inlet surface is higher than the opening (3121) and lower than the second ventilation hole (3122).

8. The cleaning equipment according to any one of claims 1-7, characterized in that, The dust cup assembly (100) extends along a first direction, and the fluid entering the dust cup assembly (100) flows along the first direction; wherein, the first direction is the length direction of the cleaning device (10); The cleaning device (10) further includes a second filter assembly (500), which is disposed within the dust cup assembly (100); the second filter assembly (500) and the first filter assembly (300) are spaced apart along the first direction, and the second filter assembly (500) is located upstream of the first filter assembly (300) in the airflow direction.

9. The cleaning equipment according to claim 8, characterized in that, The cleaning device (10) further includes a spiral guide (200) disposed within the dust cup assembly (100); the spiral guide (200) is located between the first filter assembly (300) and the second filter assembly (500); the spiral guide (200) is used to form the spiral airflow.

10. The cleaning equipment according to claim 9, characterized in that, The spiral guide (200) is coaxially arranged with the riser pipe (310), and the spiral guide (200) covers the riser pipe (310) along the projected outline of the first direction.

Images