Cleaning apparatus and dustbin assembly

Abstract

The application relates to the field of intelligent electrical appliances, in particular to a cleaning device and a dust box assembly. The dust box assembly comprises a first box cover, a second box cover, a third box cover and a filtering assembly. The first box cover is provided with a dust collection cavity with an open end, and a dust suction opening communicating with the dust collection cavity is formed; the second box cover is arranged at the open end and is in sealing connection with the dust collection cavity; a mounting and positioning groove for mounting the filtering assembly is formed on the side of the second box cover away from the first box cover; a ventilation opening communicating with the dust collection cavity is formed in the groove bottom of the mounting and positioning groove, and a dust collection filter screen is arranged on the ventilation opening; the third box cover is arranged on the side of the second box cover away from the first box cover, is detachably connected with the first box cover and is in sealing connection with the periphery of the second box cover, and the third box cover is provided with a suction opening communicating with the dust collection cavity through the ventilation opening. The cleaning device and the dust box assembly provided by the application can reduce the resistance and operation energy consumption of the dust suction air duct, and improve the cleaning effect.

Description

Technical Field

[0001] This application relates to the field of smart appliances, and more particularly to a cleaning device and dustbin assembly. Background Technology

[0002] Robotic vacuum cleaners, also known as automatic cleaning machines, intelligent vacuum cleaners, or robotic vacuums, are a type of smart home appliance that uses artificial intelligence to automatically clean floors in a room. They typically use a combination of brushing and vacuuming to suck up debris and collect it in their dustbin. The dustbin, or collection box, is a key component of the robotic vacuum cleaner, primarily responsible for dust extraction, filtration, and collection. Dust and debris filtered by the dust filter and HEPA (High-efficiency Particulate Air) filter fall into the dustbin under gravity. The dustbin section of most robotic vacuum cleaners on the market has many structural components. This increased number of components makes assembly more complex and increases mold costs. More importantly, space constraints result in greater airflow resistance and poorer airflow, severely impacting the vacuum cleaner's energy consumption, suction power, and cleaning performance, thus hindering further improvements in the user experience. Summary of the Invention

[0003] This application provides a cleaning device and dust box assembly to reduce the resistance of the dust extraction duct and the energy consumption of the device, ensure the suction power of the suction port, and improve the cleaning effect.

[0004] In a first aspect, this application provides a dustbin assembly, comprising:

[0005] The first box cover has a dust collection chamber with an open end on the side away from the surface to be cleaned. The open end extends in the direction away from the surface to be cleaned. The first box cover has a suction port that extends towards the surface to be cleaned and communicates with the dust collection chamber.

[0006] A filter assembly for filtering the air drawn in from the suction port;

[0007] The second cover is located at the open end, and the periphery of the second cover is sealed to the wall of the dust collection chamber. The side of the second cover away from the first cover forms an installation positioning groove for installing the filter assembly. The second cover passes through the bottom of the installation positioning groove and opens a ventilation opening that connects to the dust collection chamber. The ventilation opening is covered with a dust collection filter.

[0008] The third cover is located on the side of the second cover away from the first cover. It is detachably connected to the first cover and sealed to the periphery of the second cover. The third cover has an exhaust port that connects to the dust collection chamber through a ventilation opening.

[0009] In some embodiments, the sidewall of the second cover facing the air intake is provided with a recessed portion that is recessed toward the dust collection chamber, the recessed portion being flush with the air intake, and the filter assembly being at least partially disposed below the recessed portion.

[0010] In some embodiments, the dimension of the mounting positioning groove along the width direction of the air extraction port is larger than that of the air extraction port, and a limiting baffle for securing the filter assembly is provided on the side of the mounting positioning groove facing the air extraction port. The orthographic projection of the limiting baffle on the plane where the air extraction port is located falls outside the air extraction port.

[0011] In some embodiments, the side of the third cover facing the second cover protrudes towards the second cover and a positioning pressure post abuts against the side of the filter assembly away from the dust collection chamber.

[0012] In some embodiments, the dimension of the positioning pressure column gradually increases from the direction away from the air extraction port to the direction closer to the air extraction port along the direction parallel to the air extraction port.

[0013] In some embodiments, a dust collection filter is disposed on the side of the second cover facing the dust collection chamber.

[0014] In some embodiments, multiple sets of vents are provided, and support ribs are formed between adjacent vents to support the filter assembly.

[0015] In some embodiments, the second lid includes a lid body and an annular sealing portion located on the outer periphery of the lid body. The annular sealing portion is provided with a first lip that elastically abuts against the first lid and a second lip that elastically abuts against the third lid.

[0016] In some embodiments, the outer peripheral portion of the annular sealing part located between the first lip and the second lip is provided with a positioning groove, and the inner wall of the third cover is provided with a positioning buckle that cooperates with the positioning groove.

[0017] Secondly, this application provides a cleaning device that uses the dust box assembly provided in the above embodiments.

[0018] Compared with the prior art, the above-mentioned technical solution provided in this application has the following advantages: The dust box assembly provided in this application adopts a setting method in which the dust collection filter and the filter assembly are fixed by the second box cover. The second box cover is fixed between the first box cover and the third box cover, which are detachably connected. The structure is simple, the installation and fixing are convenient, the number of parts is reduced, the installation height of the filter assembly is reduced, and the installation height of the filter assembly is further reduced by the recessed setting of the mounting positioning groove on the side of the second box cover away from the first box cover. This reduces the obstruction of the air intake port by the filter assembly in the height direction of the air intake port, so that the air carrying dust and debris enters the dust collection chamber from the dust suction port of the first box cover. After the dust and debris are initially filtered by the dust collection filter, they fall into the dust collection chamber under the action of gravity. The air carrying fine dust enters the filter assembly through the ventilation port for further filtration, and is finally extracted from the air intake port of the third box cover.

[0019] The reduction in the number of components and the use of the mounting slot in the second cover to fix the filter assembly allows for a relatively lower installation height. This reduces the obstruction of the air intake by the filter assembly in the height direction. During suction, air flows primarily upwards along the filter assembly, i.e., along its thickness, and then turns backwards towards the air intake. This reduces the amount of air flowing along the width of the filter assembly, thereby lowering airflow resistance. With a fixed suction power (i.e., the same suction force at the air intake), the suction force at the suction port is increased, thus reducing equipment energy consumption and improving cleaning performance. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0021] 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0023] Figure 1 A schematic diagram of the dustbin assembly provided in an embodiment of this application;

[0024] Figure 2 for Figure 1 Top view;

[0025] Figure 3 for Figure 1 Exploded view;

[0026] Figure 4 for Figure 3 A diagram from another perspective;

[0027] Figure 5 for Figure 1 The longitudinal sectional view.

[0028] Explanation of reference numerals in the attached figures:

[0029] 10-First lid; 11-Dust inlet; 12-Dust collection chamber; 13-Open end; 20-Second lid; 21-Lid body; 22-Annular sealing part; 221-First lip; 222-Positioning slot; 223-Second lip; 23-Dust collection filter; 24-Installation positioning groove; 25-Ventilation port; 26-Supporting rib; 27-Limiting baffle; 28-Recessed part; 30-Filter assembly; 40-Third lid; 41-Exhaust port; 42-Positioning pressure column; 43-Positioning buckle; 44-Locking buckle; 50-Water tank. Detailed Implementation

[0030] 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.

[0031] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0032] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0033] In order to solve the technical problems of high energy consumption and poor cleaning effect caused by the high resistance of the dust extraction duct of existing cleaning equipment such as sweepers, this application provides a cleaning equipment and dust box assembly that can reduce the resistance of the dust extraction duct, reduce equipment energy consumption, and improve cleaning effect.

[0034] This application provides a dustbin assembly suitable for cleaning equipment with dust collection and storage functions, such as robot vacuums and robot mops. Figures 1 to 3 As shown, the dustbin assembly mainly includes a first cover 10, a second cover 20, a third cover 40, and a filter assembly 30, which is typically made of HEPA filter. The first cover 10 is usually flush with the surface to be cleaned and is located at the bottom, hence it is often referred to as the lower cover. Conversely, the third cover 40 is positioned away from the surface to be cleaned and is located at the top, hence it is also called the upper cover. The second cover 20 is sealed between the first cover 10 and the third cover 40 and is also called the middle cover. In this application, "upper" and "lower" are defined with reference to the surface to be cleaned; the side closer to the surface is considered "lower," and the side away is considered "upper." The direction from top to bottom represents the height of the cleaning equipment and the dustbin assembly.

[0035] In this embodiment, a concave dust collection chamber 12 is formed on the top or upper side of the first lid 10, i.e., the side facing away from the surface to be cleaned. The top of the dust collection chamber 12 has an open end 13. The first lid 10 has a suction port 11, which connects to the dust collection chamber 12 and extends to the surface to be cleaned, so as to draw dust and debris from the surface to be cleaned into the dust collection chamber 12 for filtration and storage. In the illustrated embodiment, the suction port 11 is located on the side wall of the first lid 10 and extends downward at an angle. In other embodiments, the suction port 11 may also be located at the bottom of the first lid 10 as needed. The second cover 20 is connected to the open end of the dust collection chamber 12, thus sealing the second cover 20 with the dust collection chamber 12. Preferably, the peripheral edge of the second cover 20 is sealed to the cavity wall of the dust collection chamber 12, i.e., the inner wall of the first cover 10. Simultaneously, the upper side of the second cover 20, away from the first cover 10, has a recessed mounting groove 24, through which the filter assembly 30 is mounted. The mounting groove 24 has a ventilation opening 25 extending into the dust collection chamber 12, and a dust collection filter 23 is installed at the ventilation opening 25. Preferably, there are several ventilation openings 25. The second cover 20 or the middle cover integrates the filter assembly 30 and the dust collection filter 23, greatly simplifying the overall structure of the dust box assembly.

[0036] The third cover 40 is located above the second cover 20 and is detachably connected to the first cover 10. The second cover 20 is sealed between the first cover 10 and the third cover 40. The third cover 40 has an air extraction port 41, which communicates with the dust collection chamber 12 of the first cover 10 via the ventilation port 25 of the second cover 20. The detachable connection between the third cover 40 and the first cover 10, and the integrated dust collection filter 23 and filter assembly 30 structure of the second cover 20, greatly simplify the structure of the dust box assembly, reduce the number of parts, lower the installation height of the filter assembly 30, and reduce the obstruction of the air extraction port 41 by the filter assembly 30 in the vertical direction. More air flows upwards from the dust collection chamber 12 through the vent 25 along the thickness direction of the filter assembly 30, then turns and flows towards the exhaust port 41. This reduces the amount of air flowing through the filter assembly 30 to the exhaust port 41 along its width. Since the thickness of the filter assembly 30 is much smaller than its width, the resistance between the exhaust port 41 and the dust collection port 11 is reduced, thus lowering the equipment's energy consumption. Under the premise of a fixed suction force at the exhaust port 41, the suction force at the dust collection port 11 is increased, improving the cleaning effect. Simultaneously, the detachable structure of the first cover 10 and the third cover 40 facilitates direct replacement of the filter assembly 30 by opening the third cover 40, improving maintenance convenience.

[0037] When the dust box assembly is in operation, the air extraction port 41 is connected to the fan duct of the cleaning equipment. The air carrying dust and debris passes through the dust extraction port 11 and the dust collection chamber 12 to the dust collection filter 23 for primary filtration. Larger dust and debris particles are blocked by the dust collection filter 23 and fall into the dust collection chamber 12 for storage under gravity. The filtered air rises through the vent 25 into the filter assembly 30 for secondary filtration. The air after secondary filtration is discharged to the outside through the air extraction port 41 and the fan duct.

[0038] See also Figure 3 In this embodiment, to further reduce the flow resistance of the dust collection duct of the dust box assembly, i.e., the section from the suction port 11 to the exhaust port 41, this application provides a recessed portion 28 on the second cover 20 opposite to the exhaust port 41. The width of the recessed portion 28 is greater than or equal to the width of the exhaust port 41, and the bottom of the recessed portion 28 is flush with or lower than the bottom of the exhaust port 41, thereby reducing the obstruction of the exhaust port 41 and thus reducing the resistance of the airflow after filtration by the filter assembly 30 to the exhaust port 41. Because the second cover 20 integrates the dust collection filter 23 and the filter assembly 30, and the mounting positioning groove 24 reduces the installation height of the filter assembly 30, the bottom of the filter assembly 30 is lower than the bottom of the exhaust port 41 and the recessed portion 28, reducing the obstruction of the filter assembly 30 in the height direction of the exhaust port 41 and further reducing airflow resistance.

[0039] Furthermore, to ensure the reliability of the filter assembly 30's fixation and reduce the flow resistance of the dust extraction duct, the mounting positioning groove 24 facing the air intake 41 adopts an open design. Limiting baffles 27 are only provided at both ends of the mounting positioning groove 24 facing the air intake 41. These limiting baffles 27, in conjunction with the other groove walls of the mounting positioning groove 24, fix the filter assembly 30 horizontally. This structure, with limiting baffles 27 only at both ends of the mounting positioning groove 24 facing the air intake 41, reduces obstruction of the air intake 41, thereby reducing the flow resistance of the dust extraction duct. Specifically, the limiting baffles 27 are located outside the width direction of the air intake 41; in other words, the projection of the limiting baffles 27 onto the plane of the air intake 41 falls outside the area of ​​the air intake 41, preventing the limiting baffles 27 from coinciding with the air intake 41 and reducing air obstruction. The dimension of the limiting baffle 27 along the depth direction of the mounting positioning groove 24 is less than or equal to the dimension of the filter assembly 30 in that direction. In other words, the height of the limiting baffle 27 is less than or equal to the thickness of the filter assembly 30.

[0040] like Figures 3 to 5 As shown, in some embodiments, the third cover 40, facing the second cover 20 (i.e., the bottom of the third cover 40), has multiple downwardly extending positioning posts 42 that abut against the positioning filter assembly 30. These positioning posts 42 press the filter assembly 30 against the mounting positioning groove 24, achieving vertical positioning of the filter assembly 30 and preventing vertical shaking during air extraction. Simultaneously, the spaced positioning posts 42 form air passages between adjacent posts, facilitating vertical upward airflow through the filter assembly 30 before turning towards the exhaust port 41, reducing the amount of air horizontally passing through the filter assembly 30 and lowering airflow resistance.

[0041] Positioning column 42 can be adopted as follows Figure 4The cross-rib structure shown can also be a triangular prism structure. In some embodiments, the size of the positioning pressure column 42 gradually increases from the side away from the air intake 41 to the side closer to the air intake 41 along the direction parallel to the air intake 41, that is, forming a low flow resistance structure with a gradually expanding size from the air intake to the exhaust direction, reducing the obstruction of the air by the positioning pressure column 42 to the air. For example, the positioning pressure column 42 adopts a triangular prism structure, the side of the triangular prism facing the air intake 41 is parallel to the plane where the air intake 41 is located, the side of the triangular prism away from the air intake 41 is the side edge of the triangular prism, and the width of the positioning pressure column 42 gradually increases from the side away from the air intake 41 to the side closer to the air intake 41, ensuring the contact area with the filter assembly 30 while reducing the flow resistance of the air flowing from the vent 25 through the filter assembly 30 from bottom to top and turning towards the air intake 41. In addition, the positioning column 42 can also adopt a streamlined structure from the side away from the air intake 41 to the air intake 41, which can ensure that the filter component 30 is positioned and abutted, while reducing the air flow resistance.

[0042] In the above embodiments, multiple vents 25 can be arranged in an array, with support ribs 26 formed between adjacent vents 25. These support ribs 26 constitute the bottom support of the mounting and positioning grooves 24, ensuring airflow area while also providing support strength for the filter assembly 30. The dust collection filter 23 can be integrated on the upper or lower side of the support ribs 26. To improve the coverage of the dust collection filter 23 over the vents 25 and the ease of installation, the dust collection filter 23 is preferably located on the side of the second cover 20 facing the dust collection chamber 12, i.e., at the bottom of the support ribs 26. The area of ​​the dust collection filter 23 can be larger than the area of ​​the vent 25, improving the coverage of the outer periphery of the vent 25 and preventing debris from entering the filter assembly 30 through the connection gap between the dust collection filter 23 and the vent 25, thereby accelerating clogging and increasing flow resistance in the filter assembly 30. The dust collection filter 23 can be made of materials such as nylon, non-woven fabric, and stainless steel. Its main purpose is to filter coarse dust and debris so that the filtered coarse dust and debris fall into the bottom of the dust collection chamber 12 under the action of gravity.

[0043] The suction port 11 is located on the side wall of the first cover 10 and extends downwards at an angle, so that the air entering the dust collection chamber 12 flows upwards at an angle, which does not disturb the dust and debris accumulated at the bottom of the dust collection chamber 12 and helps to reduce the flow resistance of the suction duct. The function of the filter assembly 30 is to filter inhalable particles such as dust in the suction air, to prevent the exhaust from carrying dust during the dust removal process and increasing the concentration of inhalable particles in the air, thus ensuring air quality, and at the same time preventing dust from accumulating at the suction motor and affecting heat dissipation.

[0044] In some embodiments, the second lid 20 includes a lid body 21 located on the inner periphery and an annular sealing portion 22 disposed on the outer periphery of the lid body 21. The annular sealing portion 22 includes a sealing body located on the outer periphery of the lid body 21 and a first lip 221 and a second lip 223 connected to the upper and lower sides of the sealing body and protruding toward the outer periphery of the sealing body.

[0045] The first lip 221 is located on the bottom outer periphery of the sealing body and is used to elastically abut against the inner wall of the first cover 10 or the dust collection chamber 12, improving the sealing between the outer periphery of the second cover 20 and the inner periphery of the first cover 10, reducing or even preventing air from flowing along the gap between the first cover 10 and the second cover 20, thereby ensuring that the dust-laden air flows sequentially along the dust collection filter 23, the vent 25, and the filter assembly 30. The second lip 223 is located on the top outer periphery of the sealing body and is used to elastically abut against the inner wall of the third cover 40, improving the sealing between the second cover 20 and the third cover 40. With the sealing between the first cover 10 and the first lip 221, and the sealing between the second lip 223 and the third cover 40, a double seal is formed on the outer periphery of the second cover 20, effectively reducing or even preventing air from flowing directly from the gap between the second cover 20 and the first cover 10 and the third cover 40 to the exhaust port 41.

[0046] The annular sealing part 22 is located on the outer periphery between the first lip 221 and the second lip 223, which is also the middle outer periphery of the sealing body. Several positioning slots 222 are provided circumferentially. The inner periphery of the third cover 40 is provided with positioning buckles 43 that cooperate with the positioning slots 222. The second cover 20 is installed and fixed relative to the third cover 40 by cooperating with the positioning slots 222 on the outer periphery of the annular sealing part 22 and the positioning buckles 43 on the inner periphery of the third cover 40.

[0047] The lid body 21 is typically made of a strong, rigid silicone material to ensure its support strength for the filter assembly 30 and to prevent deformation due to suction during dust removal. The annular sealing part 22 is made of a soft silicone material, utilizing its elastic deformation capability to form an interference seal with the first lid 10 and the third lid 40. The lid body 21 and the annular sealing part 22 can be injection molded separately and then nested together, with sealant applied between their connecting surfaces during the nesting process. Alternatively, they can be integrally molded, integrating the dust collection filter 23 with the second lid 20 to improve the convenience of disassembling and replacing the filter assembly 30. The lid body 21 can also be integrally provided with a handle as needed to facilitate the removal and placement of the second lid 20.

[0048] To facilitate the replacement of the filter assembly 30, the first cover 10 and the second cover 20 can be rotatably connected. For example, the suction port 11 of the first cover 10 and the air intake port 41 of the third cover 40 are located on the same side. The first cover 10 and the third cover 40 are provided with mutually cooperating pivot lugs on this side, and are rotatably connected by the pivot and pivot lugs. The third cover 40 has a locking buckle 44 on its side opposite to the air intake port 41, and the first cover 10 can have a locking groove that engages with the locking buckle 44. When the filter assembly 30 needs to be replaced, the locking buckle 44 is moved to disengage from the locking groove to unlock it. Then, the third cover 40 is flipped open relative to the first cover 10, and the filter assembly 30 is removed from the mounting positioning groove 24 above the second cover 20. The cleaned filter assembly 30 or a new filter assembly 30 is placed in the mounting positioning groove 24, and the third cover 40 is then fastened onto the first cover 10. When the dustbin assembly provided in this application is used in a sweeping and mopping machine, a water tank 50 is also provided on the side of the dustbin assembly. The water tank 50 is usually located on the side of the first cover 10 away from the suction port 11. At this time, the locking groove can be provided on the top of the water tank 50, and a water inlet is provided on the top of the water tank 50 to facilitate timely replenishment of water into the water tank 50.

[0049] This application also provides a cleaning device, including the dust box assembly provided in the above embodiments. The cleaning device can be a sweeper or a sweeper-mop combo. Other parts of the sweeper and sweeper-mop combo are described in detail in this application.

[0050] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0051] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0052] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A dustbin assembly, characterized in that, include: The first box lid has a dust collection chamber with an open end on the side facing away from the surface to be cleaned, and a dust suction port that connects the outside to the dust collection chamber on the side facing the surface to be cleaned. A filter assembly for filtering the air drawn in from the suction port; A second cover is provided at the open end and is sealed to the dust collection chamber. The side of the second cover away from the first cover is provided with an installation positioning groove for installing the filter assembly. The installation positioning groove has a ventilation opening that communicates with the dust collection chamber. The ventilation opening is covered with a dust collection filter. The third cover is located on the side of the second cover away from the first cover, is detachably connected to the first cover and is sealed to the periphery of the second cover, and the third cover has an exhaust port that connects to the dust collection chamber through the ventilation port. The second lid has a recessed portion opposite to the air extraction port. The width of the recessed portion is greater than or equal to the width of the air extraction port. The recessed portion is flush with the air extraction port, and the filter assembly is at least partially lower than the recessed portion.

2. The dustbin assembly according to claim 1, characterized in that, The dimension of the mounting positioning groove along the width direction of the air extraction port is larger than that of the air extraction port. A limiting baffle for securing the filter component is provided on the side of the mounting positioning groove facing the air extraction port. The orthographic projection of the limiting baffle on the plane where the air extraction port is located falls outside the air extraction port.

3. The dustbin assembly according to claim 2, characterized in that, The dimension of the limiting baffle along the depth direction of the mounting positioning groove is less than or equal to the dimension of the filter assembly in that direction.

4. The dustbin assembly according to any one of claims 1-3, characterized in that, The third lid has a positioning pressure post on the side facing the second lid, and the positioning pressure post abuts against the filter assembly.

5. The dustbin assembly according to claim 4, characterized in that, The dimension of the positioning pressure column gradually increases along the direction parallel to the air extraction port from away from the air extraction port to near the air extraction port.

6. The dustbin assembly according to claim 1, characterized in that, The dust collection filter is located on the side of the second box cover facing the dust collection chamber.

7. The dustbin assembly according to claim 1, characterized in that, The ventilation openings are provided in multiple sets, and support ribs are formed between adjacent ventilation openings to support the filter assembly.

8. The dustbin assembly according to claim 1, characterized in that, The second lid includes a lid body and an annular sealing portion located on the outer periphery of the lid body. The annular sealing portion is provided with a first lip that elastically abuts against the first lid and a second lip that elastically abuts against the third lid.

9. The dustbin assembly according to claim 8, characterized in that, The annular sealing part has a positioning groove on its outer periphery between the first lip and the second lip, and the inner wall of the third box cover is provided with a positioning buckle that cooperates with the positioning groove.

10. A cleaning device, characterized in that, The dustbin assembly according to any one of claims 1-9 is used.

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