Filtering and dust collecting device and cleaning robot

Abstract

The present application relates to the technical field of cleaning robot apparatuses, and in particular to a filtering and dust collecting device and a cleaning robot. The filtering and dust collecting device comprises a housing, an inner housing component, a first filtering structure, a second filtering structure and a third filtering structure. In the filtering and dust collecting device, the second filtering structure, the first filtering structure and the third filtering structure sequentially and hierarchically perform layer-by-layer filtering and separation on an airflow carrying debris and dust, so that the debris and dust suctioned along with the airflow are more thoroughly intercepted in the filtering and dust collecting device, and the hierarchical filtering and separation of debris and dust would not prone to causing blockage of the filtering structures. Therefore, the use of the technical solution can solve the problem of the working effect of dust collection and cleaning during cleaning work being affected due to the suction force of the cleaning robot being weakened because an HEPA filter screen in an existing cleaning robot is prone to being blocked by dust or debris.

Description

Filter dust collection device and cleaning robot

[0001] This application claims priority to the Chinese patent application with application number 202311862554.8 filed with the Patent Office of China on December 29, 2023, and with the invention name “Filtering Dust Collection Device and Cleaning Robot”, as well as the Chinese patent application with application number 202323658343.0 filed with the Patent Office of China on December 29, 2023, and with the invention name “Filtering Dust Collection Device and Cleaning Robot”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application belongs to the technical field of cleaning robot equipment, and in particular relates to a filtering dust collection device and a cleaning robot. Background Art

[0003] Current cleaning robots typically use a high-efficiency particulate air (HEPA) filter to separate the dust and air they inhale. Typically, the HEPA filter is located within a chamber that collects dust. Consequently, the HEPA filter can easily become clogged with dust and debris, weakening the robot's suction power. This can affect the robot's cleaning performance and negatively impact the user experience. Technical issues

[0004] The purpose of this application is to provide a filtering dust collection device and a cleaning robot, aiming to solve the problem that the HEPA filter in the current cleaning robot is easily clogged by dust or debris, resulting in the weakening of the suction power of the cleaning robot and affecting the vacuum cleaning effect during cleaning work. Technical Solutions

[0005] To achieve the above-mentioned purpose, according to the first aspect of the present application, the technical solution adopted in the present application is: a filtering dust collecting device, comprising:

[0006] The shell is formed with a cavity, and the shell is provided with a mounting port, an air inlet and an air outlet;

[0007] an inner shell member installed in the cavity, wherein the bottom end of the inner shell member abuts against the bottom wall of the shell to divide the cavity into a first chamber and a second chamber, the inner shell member is provided with a first communication port and a second communication port, the first chamber is connected to the inner cavity of the inner shell member through the first communication port, the second chamber is connected to the inner cavity of the inner shell member through the second communication port, the air inlet is connected to the first chamber, and the installation port and the air outlet are both connected to the second chamber;

[0008] a first filter structure installed in the inner cavity of the inner shell member, the first filter structure having a first interface portion, a second interface portion, and a third interface portion, the first interface portion being in communication with the first communication port, the second interface portion extending toward the bottom end of the inner shell member, and the third interface portion being in communication with the second communication port, so that particulate matter carried by airflow passing through the first filter structure is filtered by the first filter structure and deposited into the inner cavity of the inner shell member;

[0009] a second filter structure mounted on the inner shell member, the second filter structure covering the first communication port, and configured to filter airflow toward the first interface portion;

[0010] The third filter structure is installed at the installation port. The third filter structure includes a fine filter screen. The fine filter screen extends to the inner shell component to isolate the second communication port and the air outlet.

[0011] In some embodiments of the present application, the first filtering structure includes at least one cyclone cylinder, which is a conical cylinder with two ends connected. The small end of the conical cyclone cylinder is the second interface part, and the large end of the conical cyclone cylinder is the third interface part. The side wall of the cyclone cylinder is provided with a first interface part, the first interface part is close to the third interface part, and the channel extension direction of the first interface part is tangent to the inner wall of the cyclone cylinder.

[0012] In some embodiments of the present application, the inner shell component includes a supporting bottom shell, a shell frame and a shell cover assembly, the bottom end of the supporting bottom shell abuts against the bottom wall of the shell, the shell frame and the shell cover assembly are stacked on the supporting bottom shell in sequence, the shell cover assembly divides the cavity into a first chamber and a second chamber, the first connecting port is arranged on the shell frame, the second connecting port is arranged on the shell cover assembly, and the third interface portion abuts against the shell cover assembly and is connected to the second connecting port.

[0013] In some embodiments of the present application, the shell cover assembly includes a cover member and a buffer cover, the cover member is connected to the inner wall of the shell to separate the cavity into a first chamber and a second chamber, the second connecting port is arranged on the cover member, the buffer cover is installed on the side of the cover member away from the first filter structure, and the buffer cover covers the second connecting port, and the buffer cover has an opening.

[0014] In some embodiments of the present application, an outer side wall of the supporting bottom shell is provided with an annular skirt, which circumferentially surrounds the supporting bottom shell and is inclined from top to bottom.

[0015] In some embodiments of the present application, the bottom wall of the shell is provided with a plurality of spaced blocking vertical plates, the plurality of blocking vertical plates surround the inner shell component, and the plane where the plate surface of each blocking vertical plate is located intersects with the outer side wall supporting the bottom shell.

[0016] In some embodiments of the present application, the shell includes a shell body and a flip door panel, the bottom end of the shell body is an open end, one side of the flip door panel is rotatably connected to the shell body, and the flip door panel is used to close or open the open end. When the flip door panel closes the open end, the flip door panel serves as the bottom wall of the shell, supporting the bottom end of the bottom shell and abutting against the flip door panel when the flip door panel closes the open end.

[0017] In some embodiments of the present application, a first seal is installed on the flip door panel, and the first seal abuts against the bottom end of the supporting bottom shell when the flip door panel closes the open end, so that the bottom end of the supporting bottom shell and the flip door panel are sealed.

[0018] In some embodiments of the present application, a second seal is further installed on the flip door panel. The second seal surrounds the first seal and abuts against the edge of the opening end to seal the opening end when the flip door panel closes the opening end.

[0019] According to a second aspect of the present application, a cleaning robot is provided. Specifically, the cleaning robot comprises: a body assembly and the aforementioned filtering dust collection device, wherein a mounting space is provided at the top of the body assembly, an air flow inlet and an air flow outlet are provided on the sidewalls of the mounting space, the filtering dust collection device is detachably mounted within the mounting space, an air inlet of the filtering dust collection device is in communication with the air flow inlet, and an air outlet of the filtering dust collection device is in communication with the air flow outlet. Beneficial effects

[0020] This application has at least the following beneficial effects:

[0021] When the cleaning robot provided by the present application is used to vacuum clean the floor, debris, garbage, and dust are sucked into the filter dust collection device for filtering and separating the debris, garbage, dust, and airflow, and the debris, garbage, and dust are collected and deposited in the filter dust collection device. In the filter dust collection device, the airflow carrying debris, garbage, and dust is filtered and separated layer by layer through the second filter structure, the first filter structure, and the third filter structure, so that the debris, garbage, and dust sucked in with the airflow are more thoroughly intercepted in the filter dust collection device. Moreover, the second filter structure, the first filter structure, and the third filter structure are filtered and separated layer by layer, so that the debris, garbage, and dust are collected and deposited layer by layer, thereby reducing the probability of clogging of each filter structure, being able to effectively maintain the suction power of the cleaning robot for a long time, significantly improving the vacuum cleaning effect of the cleaning robot, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] FIG1 is a schematic diagram of the assembly structure of a cleaning robot according to an embodiment of the present application;

[0024] FIG2 is an exploded schematic diagram of the cleaning robot according to an embodiment of the present application;

[0025] FIG3 is a second exploded schematic diagram of the cleaning robot according to an embodiment of the present application;

[0026] FIG4 is a cross-sectional schematic diagram of a filtering dust collecting device according to an embodiment of the present application;

[0027] FIG5 is an exploded schematic diagram of a filtering dust collecting device according to an embodiment of the present application;

[0028] FIG6 is a second exploded schematic diagram of the filtering and dust collecting device according to an embodiment of the present application;

[0029] FIG7 is a schematic structural diagram of the first filtering structure of the filtering dust collecting device according to an embodiment of the present application.

[0030] 1. The dust collecting device is shown in FIG. 1 ; 10. The dust collecting device is shown in FIG. 1 ; 11. The first chamber is shown in FIG. 1 ; 11. The second chamber is shown in FIG. 1 ; 12. The mounting port is shown in FIG. 1 ; 13. The air inlet is shown in FIG. 1 ; 14. The air outlet is shown in FIG. 1 ; 15. The housing is shown in FIG. 1 ; 16. The flip door is shown in FIG. 1 ; 161. The blocking plate is shown in FIG. 1 ; 17. The top cover is shown in FIG. 1 ; 18. The lock is shown in FIG. 20. The inner housing member is shown in FIG. 21. The first connecting port is shown in FIG. 22. The second connecting port is shown in FIG. 23. The supporting bottom housing is shown in FIG. 231. The annular skirt is shown in FIG. 24. The housing frame is shown in FIG. 25. The housing cover assembly is shown in FIG. 251. The cover member is shown in FIG. 2511. The cover plate is shown in FIG. 2512. The cover body is shown in FIG. 252. The buffer cover is shown in FIG. 2521. The opening is shown in FIG. 30. The first filtering structure is shown in FIG. 31. The first interface portion is shown in FIG. 32. The second interface portion is shown in FIG. 33. The third interface portion is shown in FIG. 34. The cyclone is shown in FIG. 40. The second filtering structure is shown in FIG. 50. The third filtering structure is shown in FIG. 51. The fine filter screen is shown in FIG. 61. First sealing member; 62. Second sealing member; 300. Cleaning robot; 310. Body assembly; 311. Installation space; 312. Airflow inlet; 313. Airflow outlet. Modes for Carrying Out the Invention

[0031] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0032] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0033] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0034] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0035] As shown in Figures 4 to 7, the dust filtering and collecting device 100 provided in an embodiment of the present application includes a housing 10, an inner housing member 20, a first filter structure 30, a second filter structure 40, and a third filter structure 50. The housing 10 is formed with a cavity, and the housing 10 is provided with a mounting port 12, an air inlet 13, and an air outlet 14. The inner housing member 20 is installed in the cavity, and the bottom end of the inner housing member 20 abuts against the bottom wall of the housing 10 to divide the cavity into a first chamber 111 and a second chamber 112. The inner housing member 20 is provided with a first communication port 21 and a second communication port 22. The first chamber 111 is connected to the inner cavity of the inner housing member 20 through the first communication port 21, and the second chamber 112 is connected to the inner cavity of the inner housing member 20 through the second communication port 22. The air inlet 13 is connected to the first chamber 111, and the mounting port 12 and the air outlet 14 are both connected to the second chamber 112. The first filter structure 30 is mounted within the inner cavity of the inner shell member 20. It comprises a first interface portion 31, a second interface portion 32, and a third interface portion 33. The first interface portion 31 communicates with the first communication port 21, the second interface portion 32 extends toward the bottom end of the inner shell member 20, and the third interface portion 33 communicates with the second communication port 22. Particulate matter carried by the airflow passing through the first filter structure 30 is filtered by the first filter structure 30 and deposited within the inner cavity of the inner shell member 20. A second filter structure 40 is mounted within the inner shell member 20, covering the first communication port 21. The second filter structure 40 is configured to filter airflow directed toward the first interface portion 31. A third filter structure 50 is mounted at the mounting port 12. The third filter structure 50 includes a fine filter screen 51 that extends into the inner shell member 20 to separate the second communication port 22 from the air outlet 14.

[0036] When the cleaning robot 300 provided by the present application is used to vacuum clean the floor, debris, garbage, and dust are sucked into the dust filter 100 for filtration and separation of the debris, garbage, dust, and airflow, and the debris, garbage, and dust are collected and deposited in the dust filter 100. In the dust filter 100, the airflow carrying debris, garbage, and dust is filtered and separated layer by layer by the second filter structure 40, the first filter structure 30, and the third filter structure 50, so that the debris, garbage, and dust sucked in with the airflow are more thoroughly trapped in the dust filter 100. Furthermore, the debris, garbage, and dust are filtered and separated layer by layer by the second filter structure 40, the first filter structure 30, and the third filter structure 50, so that the debris, garbage, and dust are collected and deposited layer by layer, thereby reducing the probability of clogging of each filter structure, effectively maintaining the suction power of the cleaning robot for a long time, significantly improving the vacuum cleaning effect of the cleaning robot 300, and enhancing the user experience.

[0037] In the embodiment of the present application, the second filter structure 40 uses a filter screen with larger mesh size (larger mesh size is relative to the mesh size of the fine filter screen 51 used in the third filter structure 50, which is a relative concept), so as to intercept larger volumes of debris and garbage and let them fall to the bottom of the first chamber 111.

[0038] As shown in Figures 4, 6 and 7, the first filtering structure 30 includes at least one cyclone cylinder 34, which is a conical cylinder with two ends connected. The small end of the conical cyclone cylinder 34 is the second interface part 32, and the large end of the conical cyclone cylinder 34 is the third interface part 33. The side wall of the cyclone cylinder 34 is provided with a first interface part 31, the first interface part 31 is close to the third interface part 33, and the channel extension direction of the first interface part 31 is tangent to the inner wall of the cyclone cylinder 34. Because the channel extension direction of the first interface portion 31 is tangential to the inner wall of the cyclone barrel 34, a rotation effect is generated when the airflow enters the cyclone barrel 34 from the first interface portion 31. The air and debris, garbage, and dust are subjected to different centrifugal forces. Part of the airflow flows downward along the cyclone barrel 34 toward the second interface portion 32, and part of the airflow flows upward along the cyclone barrel 34 toward the third interface portion 33. In addition, under the action of centrifugal force and gravity, larger particles of debris, garbage, and dust carried in the airflow are precipitated downward along the cyclone barrel 34, while smaller particles are transported upward with the airflow to the third filter structure 50 and are filtered and intercepted. Therefore, the first filter structure 30 utilizes the combined action of gravity and centrifugal force of the granular debris, garbage, and dust to achieve separation from the air, thereby allowing the granular debris, garbage, and dust to be collected and settled.

[0039] Furthermore, in the embodiment of the present application, the first filtering structure 30 includes multiple cyclones 34, which are arranged side by side as a single unit, making it easy to carry and move, and to assemble the multiple cyclones 34 simultaneously. The multiple cyclones 34 work together to filter and separate particulate debris, garbage, and dust from the airflow, greatly improving filtration efficiency.

[0040] As shown in Figures 4, 6 and 7, the inner shell member 20 includes a supporting bottom shell 23, a shell frame 24 and a shell cover assembly 25. The bottom end of the supporting bottom shell 23 abuts against the bottom wall of the shell 10, and the shell frame 24 and the shell cover assembly 25 are stacked on the supporting bottom shell 23 in sequence. A plurality of cyclone cylinders 34 are overhead mounted in the inner shell member 20 through the shell frame 24, and the shell cover assembly 25 divides the cavity into a first chamber 111 and a second chamber 112. The first connecting port 21 is provided on the shell frame 24, the second connecting port 22 is provided on the shell cover assembly 25, and the third interface portion 33 abuts against the shell cover assembly 25 and is connected to the second connecting port 22. This design structure can greatly reduce the difficulty of assembling the filtering dust collecting device 100, thereby improving the work efficiency of assembling and producing the filtering dust collecting device 100.

[0041] As shown in Figures 4 to 7, the shell cover assembly 25 includes a cover member 251 and a buffer cover 252. The cover member 251 is connected to the inner wall of the shell 10 to separate the cavity into the first chamber 111 and the second chamber 112, wherein the cover member 251 includes a cover plate 2511 and a cover body 2512. The cover body 2512 is a cylindrical structure. The cover plate 2511 is connected to the bottom end of the cover body 2512. The top end of the cover body 2512 is connected to the inner wall of the shell 10 and is arranged opposite to the installation port 12, thereby separating the cavity into the first chamber 111 and the second chamber 112. The second communication port 22 is provided on the cover plate 2511 of the cover member 251. The buffer cover 252 is installed on the side of the cover plate 2511 of the cover member 251 away from the first filter structure 30, and the buffer cover 252 covers the second communication port 22. The buffer cover 252 has an opening 2521. The buffer cover 252 buffers the airflow from the second communication port 22, converging it before blowing it toward the third filter structure 50. As the airflow is buffered by the buffer cover 252, the airflow velocity decreases, causing some granular debris, garbage, and dust carried in the airflow to settle downward under the action of gravity. This reduces the amount of oversized dust particles that are blown into and filtered by the third filter structure 50, lowering the probability of clogging the third filter structure 50 and protecting it. Furthermore, the smooth curved surface of the buffer cover 252 effectively reduces the impact of the airflow on the wall, thereby reducing wind noise to a certain extent.

[0042] As shown in Figures 4 and 6 , the outer wall of the support bottom shell 23 is provided with an annular skirt 231. The annular skirt 231 circumferentially surrounds the support bottom shell 23 and is arranged obliquely from top to bottom. As the airflow continues to flow, it tends to lift settled debris, garbage, and dust. To prevent the large amount of settled debris, garbage, and dust from being lifted up, the annular skirt 231 is provided. The annular skirt 231 intercepts the majority of the debris, garbage, and dust that is lifted up from the bottom, allowing the remaining debris, garbage, and dust to fall down along the outer wall of the support bottom shell 23.

[0043] As shown in Figures 4 and 6, the bottom wall of the housing 10 is provided with a plurality of spaced-apart blocking plates 161. The plurality of blocking plates 161 surround the inner shell member 20, and the plane of the plate surface of each blocking plate 161 intersects with the outer wall of the supporting bottom shell 23. Because the airflow continuously flows in a circular, rotating manner within the cavity, the airflow will also carry debris, garbage, and dust with it, thereby affecting the filtration and separation effect. In order to reduce the impact of the rotating debris, garbage, and dust on the filtration and separation effect, the plurality of blocking plates 161 block the rotating airflow, thereby disrupting the airflow and preventing it from rotating. The blocking plates 161 also prevent the debris, garbage, and dust from flowing with the airflow, thereby reducing the amount of debris, garbage, and dust that can be rotated, thereby helping to improve the filtration and separation effect.

[0044] In the embodiment of the present application, the central axis of the inner shell member 20 lies within the plane of each barrier plate 161. In other words, from a top-down perspective, each barrier plate 161 appears as a line segment, with the central axis of the inner shell member 20 as a point. The line along which the line segment passes passes through the point representing the central axis. This design of barrier plates 161 effectively prevents debris, garbage, and dust from rotating with the airflow.

[0045] As shown in Figures 4 to 7, the housing 10 includes a housing body 15, a flip door panel 16, and a top cover 17. The bottom end of the housing body 15 is open, and the top cover 17 is mounted on the top of the housing body 15. The mounting opening 12 is defined in the top cover 17. One side of the flip door panel 16 is rotatably connected to the housing body 15. The flip door panel 16 is used to close or open the opening. When the flip door panel 16 closes the opening, the flip door panel 16 serves as the bottom wall of the housing 10, supporting the bottom end of the bottom shell 23 against the flip door panel 16 when the opening is closed. When the flip door panel 16 closes the opening, the cavity and the inner cavity of the inner shell member are formed into a sealed chamber. During the vacuum cleaning process, debris, garbage, and dust that have been filtered and separated by the first filter structure 30, the second filter structure 40, and the third filter structure 50 are trapped in the cavity and the inner cavity of the inner shell member. When the opening end is opened by turning over the door panel 16, debris, garbage and dust trapped in the cavity and the inner cavity of the inner shell component can be cleaned out, and the cleaning work is convenient, simple and fast.

[0046] In the embodiment of the present application, when the flip door panel 16 closes the opening end, the flip door panel 16 is locked by the lock 18. When the flip door panel 16 needs to be opened, the lock 18 is unlocked, and then the flip door panel 16 will flip open the opening end under the action of its own gravity.

[0047] As shown in Figures 4 and 6, a first seal 61 is mounted on the flip door panel 16. When the flip door panel 16 closes its open end, the first seal 61 abuts the bottom end of the support bottom shell 23, thereby sealing the bottom end of the support bottom shell 23 and the flip door panel 16. The first seal 61 seals the bottom end of the support bottom shell 23 and the flip door panel 16, forming two completely independent chambers between the first chamber 111 and the inner cavity of the inner shell member 20. This prevents airflow from flowing between the two chambers, causing dust deposited in the inner shell member 20 to be refiltered into the first chamber 111, thereby ensuring efficient filtration and separation of debris, garbage, and dust.

[0048] Furthermore, as shown in Figures 4 and 6 , a second seal 62 is mounted on the flip door panel 16. The second seal 62 surrounds the first seal 61 and abuts against the edge of the opening when the flip door panel 16 closes the opening, sealing the opening. The second seal 62 seals the edge of the opening, preventing debris, trash, and dust deposited in the first chamber 111 from leaking out.

[0049] According to another aspect of the present application, a cleaning robot 300 is provided, as shown in Figures 1 to 3. Specifically, the cleaning robot 300 includes a body assembly 310 and the aforementioned filtering dust collection device 100. As shown in Figures 1 to 3, the top of the body assembly 310 is provided with an installation space 311, and the sidewalls of the installation space 311 are provided with an air flow inlet 312 and an air flow outlet 313. The filtering dust collection device 100 is detachably mounted in the installation space 311, with the air inlet 13 communicating with the air flow inlet 312, and the air outlet 14 communicating with the air flow outlet 313.

[0050] Among them, the fuselage component 310 includes a fan and an air duct component, the inlet of the fan is connected to its air flow outlet 313, and the outlet of the fan is connected to the air duct component. The fan is started to extract air, so that the air flow flows and flows through the filter dust collection device 100. At this time, the air pressure in the filter dust collection device 100 is negative pressure relative to the external atmospheric pressure, that is, suction is generated, so that the debris, garbage and dust on the ground can be adsorbed and flowed with the air flow through the various levels of filtering structures, thereby filtering and separating the air flow carrying debris, garbage and dust layer by layer, so that the debris, garbage and dust sucked in with the air flow are more thoroughly intercepted in the filter dust collection device, the dust collection and cleaning effect is better, and the user experience is improved.

[0051] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A filtering and dust collecting device, characterized in that, Comprising: A housing forming a cavity, the housing being provided with an installation opening, an air inlet and an air outlet; An inner housing member installed in the cavity, the bottom end of the inner housing member abutting against the bottom wall of the housing to divide the cavity into a first chamber and a second chamber. The inner housing member is provided with a first communication port and a second communication port. The first chamber is communicated with the inner cavity of the inner housing member through the first communication port, and the second chamber is communicated with the inner cavity of the inner housing member through the second communication port. The air inlet is communicated with the first chamber, and both the installation opening and the air outlet are communicated with the second chamber; A first filtering structure installed in the inner cavity of the inner housing member. The first filtering structure is provided with a first interface portion, a second interface portion and a third interface portion. The first interface portion is communicated with the first communication port. The second interface portion extends towards the bottom end of the inner housing member. The third interface portion is communicated with the second communication port. The particulate garbage carried by the airflow flowing through the first filtering structure is filtered by the first filtering structure and deposited in the inner cavity of the inner housing member; A second filtering structure installed on the inner housing member, the second filtering structure covering the first communication port, and the second filtering structure being used for filtering the airflow flowing towards the first interface portion; A third filtering structure installed at the installation opening, the third filtering structure including a fine filtering screen, and the fine filtering screen extending to the inner housing member to isolate the second communication port from the air outlet.

2. The dust collection and filtering device according to claim 1, wherein: The first filtering structure includes at least one cyclone cylinder. The cyclone cylinder is a conical cylinder with both ends penetrating. The small head end of the conical cyclone cylinder is the second interface portion, and the large head end of the conical cyclone cylinder is the third interface portion. The side wall of the cyclone cylinder is provided with the first interface portion. The first interface portion is close to the third interface portion, and the extending direction of the channel of the first interface portion is tangent to the inner wall of the cyclone cylinder.

3. The dust collection and filtering device according to claim 2, wherein: The inner housing member includes a supporting bottom shell, a housing frame and a housing cover assembly. The bottom end of the supporting bottom shell abuts against the bottom wall of the housing. The housing frame and the housing cover assembly are sequentially stacked on the supporting bottom shell. The housing cover assembly divides the cavity into the first chamber and the second chamber. The first communication port is arranged on the housing frame, and the second communication port is arranged on the housing cover assembly. The third interface portion abuts against the housing cover assembly and is communicated with the second communication port.

4. The dust collection and filtering device according to claim 3, wherein: The housing cover assembly includes a cover body member and a buffer cover. The cover body member is connected to the inner wall of the housing to divide the cavity into the first chamber and the second chamber. The second communication port is arranged on the cover body member. The buffer cover is installed on the side of the cover body member facing away from the first filtering structure, and the buffer cover covers the second communication port. The buffer cover is provided with an opening.

5. The dust collection and filtering device according to claim 3, wherein: The outer side wall of the support bottom shell is provided with an annular skirt plate. The annular skirt plate circumferentially surrounds the support bottom shell, and the annular skirt plate is inclined in the direction from top to bottom.

6. The dust filtering and collecting device according to claim 5, wherein: The bottom wall of the shell is provided with a plurality of spaced blocking vertical plates. The plurality of blocking vertical plates surround the inner shell member, and the plane where the plate surface of each blocking vertical plate is located intersects with the outer side wall of the support bottom shell.

7. The dust filtering and collecting device according to any one of claims 3-6, wherein: The shell includes a shell main body and a flip door panel. The bottom end of the shell main body is an open end. One side of the flip door panel is rotatably connected to the shell main body. The flip door panel is used to close or open the open end. The bottom end of the support bottom shell abuts against the flip door panel when the flip door panel closes the open end.

8. The dust filtering and collecting device according to claim 7, wherein: A first sealing member is installed on the flip door panel. The first sealing member abuts against the bottom end of the support bottom shell when the flip door panel closes the open end, so as to provide a sealed setting between the bottom end of the support bottom shell and the flip door panel.

9. The dust filtering and collecting device according to claim 8, wherein: A second sealing member is further installed on the flip door panel. The second sealing member surrounds the first sealing member. The second sealing member abuts against the edge of the open end when the flip door panel closes the open end to seal the open end.

10. A cleaning robot, characterized in that, Comprising: A fuselage assembly, the top of the fuselage assembly is provided with an installation space, and the side wall of the installation space is provided with an air inlet and an air outlet; And the dust filtering and collecting device according to any one of claims 1-9. The dust filtering and collecting device is detachably installed in the installation space. The air inlet is communicated with the air inlet, and the air outlet is communicated with the air outlet.

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