Cleaning device and air duct system thereof

Abstract

A cleaning device and an air duct system thereof. The air duct system comprises: an air duct cavity (10), provided with an air outlet (121), more than two air inlets (111A, 111B), and more than two dampers (13A, 13B), wherein each air inlet (111A, 111B) is provided with a corresponding damper (13A, 13B), so as to control the connection and disconnection between the air inlet (111A, 111B) and the air outlet (121) by means of the damper (13A, 13B); a fan (20), an air suction port of the fan (20) being communicated with the air outlet (121); a first accommodating box, communicated with at least one corresponding air inlet (111A, 111B); and a second accommodating box, communicated with at least one corresponding air inlet (111A, 111B). According to the cleaning device and the air duct system thereof, one fan (20) can be used to provide power to any one of multiple channels, or to provide power to any two or more of the multiple channels, thereby saving the number of fans (20) and reducing costs.

Description

Cleaning device and air duct system

[0001] This application claims priority to the prior application with application number 202311869978.7, filed with the State Intellectual Property Office of China on December 29, 2023, and application name “Cleaning device and its air duct system”. The contents of the above-mentioned prior application are incorporated into this text by introduction. Technical Field

[0002] The present application relates to the field of cleaning devices, and in particular to a cleaning device and an air duct system for the cleaning device. Background Art

[0003] Existing cleaning devices, when configured with multiple channels, such as a mid-sweeping channel and a washing and mopping channel, adopt a design of one fan corresponding to one channel, that is, a fan is configured for each channel to be driven separately, which requires more internal space of the machine and increases costs.

[0004] Application Contents

[0005] One purpose of the present application is to propose an air duct system for a cleaning device, which can use one fan to provide power to any one of multiple channels, or to provide power to any two or more of the multiple channels at the same time, thereby saving the number of fans and reducing costs.

[0006] To solve the above technical problems, this application adopts the following technical solutions:

[0007] The technical solution of one aspect of the present application proposes an air duct system for a cleaning device, including: an air duct cavity, provided with an air outlet, two or more air inlets, and two or more air doors, each of the air inlets being provided with an air door to control the conduction and cutoff between the air inlet and the air outlet through the air door; a fan, the air suction port of the fan being connected to the air outlet; a first storage box, being connected to at least one corresponding air inlet; and a second storage box, being connected to at least one corresponding air inlet.

[0008] According to some technical solutions of the present application, the damper is configured to move relative to the air duct cavity, and to switch between a position covering the air inlet and a position opening the air inlet by moving relative to the air duct cavity, wherein when the damper is located at a position covering the air inlet, the air inlet and the air outlet are cut off, and when the damper is located at a position opening the air inlet, the air inlet and the air outlet are connected.

[0009] According to some technical solutions of the present application, a guide hole and a guide rod passing through the guide hole are provided on the air duct cavity corresponding to each of the air doors. The guide rod can move axially along the guide hole. The air door is provided on the guide rod and moves synchronously with the guide rod to switch between a position of covering the air inlet and a position of opening the air inlet.

[0010] According to some technical solutions of the present application, one end of the guide rod passes through the guide hole to extend into the air duct cavity and connect with the damper, and the other end of the guide rod is located outside the air duct cavity and is provided with a fixed seat. The end of the guide rod provided with the fixed seat can be pressed to link the movement of the damper, and an elastic member is abutted between the fixed seat and the air duct cavity, and the elastic force of the elastic member is used to drive the guide rod to drive the damper to reset.

[0011] According to some technical solutions of the present application, a guide groove with an opening facing outward is provided on the air duct cavity, the guide hole is located on the bottom wall of the guide groove and passes through the bottom wall of the guide groove, the fixed seat and the elastic member are located in the guide groove, and the fixed seat can move along the guide groove and be adapted to the guide of the guide groove.

[0012] According to some technical solutions of the present application, a first fastening portion is provided on the air duct cavity, and a second fastening portion is provided on the air door. When the air door reaches a position blocking the air inlet, the first fastening portion and the second fastening portion are fastened to lock the air door and the air duct cavity together. When the air door moves from a position blocking the air inlet to a position opening the air inlet, the first fastening portion and the second fastening portion are disengaged; and / or limiting ribs are provided on opposite sides of the air door, and a limiting groove is provided in the air duct cavity. The limiting rib is located in the limiting groove and can slide along the limiting groove.

[0013] According to some technical solutions of the present application, sealant is embedded in the edge of the air inlet, and when the damper is located in a position covering the air inlet, the sealant abuts against the damper to seal the gap between the damper and the air inlet; the damper is configured to be able to move back and forth along a preset direction to switch between a position covering the air inlet and a position opening the air inlet, wherein the air inlet and the damper are both inclined relative to the preset direction.

[0014] According to some technical solutions of the present application, the first storage box and / or the second storage box includes an outlet and an inclined surface located around the outlet, the air inlet is arranged opposite to the outlet, and the sealant is inclined at one end away from the damper and abuts against the inclined surface.

[0015] According to some technical solutions of the present application, the air duct cavity includes a first cover body and a second cover body, the two or more air inlets are arranged side by side on the side walls of the first cover body, the second cover body is connected to the lower side of the first cover body, each air door is located in the space enclosed by the first cover body and the second cover body, and is respectively movably connected to the second cover body, and the air outlet is provided on the bottom surface of the second cover body; the first storage box and the second storage box are distributed side by side on the side of the first cover body, the outlet of the first storage box is connected to one side of the air inlet, and the outlet of the second storage box is connected to the other side of the air inlet; the fan includes an air inlet duct and an air outlet duct, the air inlet duct is located below the second cover body and is connected to the air outlet up and down, the air outlet duct is located on the side of the first cover body and the second cover body away from the first storage box and the second storage box, and the air outlet duct is connected to the air inlet duct up and down.

[0016] According to some technical solutions of the present application, the air duct system of the cleaning device also includes: a first cleaning component, the first cleaning component is connected to the first receiving box, and the first cleaning component is configured to be able to move up and down, wherein the air damper of the air inlet correspondingly connected to the first receiving box is linked to the first cleaning component, so that the first cleaning component can drive the air damper to control the cutoff between the corresponding air inlet and the air outlet by rising, and when the first cleaning component descends, the air damper can control the conduction between the corresponding air inlet and the air outlet; a second cleaning component, the second cleaning component is connected to the second receiving box, and the second cleaning component is configured to be able to move up and down, wherein the air damper of the air inlet correspondingly connected to the second receiving box is linked to the second cleaning component, so that the second cleaning component can drive the air damper to control the cutoff between the corresponding air inlet and the air outlet by rising, and when the second cleaning component descends, the air damper can control the conduction between the corresponding air inlet and the air outlet.

[0017] According to some technical solutions of the present application, a top rod for linking the air door is provided on the first cleaning assembly and / or the second cleaning assembly.

[0018] Another aspect of the present application provides a cleaning device comprising the air duct system described in any of the above technical solutions.

[0019] The cleaning device and its air duct system provided by the present application, when the air door is controlled to be on, the air inlet of the air duct cavity connected to the first storage box and the air outlet of the air duct cavity form a channel, and the air inlet of the air duct cavity connected to the second storage box and the air outlet of the air duct cavity form another channel. Combined with the control of the air door on and off, it is possible to use one fan to provide power to any one of the multiple channels, or to provide power to any two or more of the multiple channels at the same time, which can save the number of fans and reduce costs.

[0020] It should be understood that the foregoing general description and the following detailed description are merely illustrative and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects, features and advantages of the present application will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings.

[0022] FIG1 is a schematic structural diagram of an air duct system in one embodiment of the present application.

[0023] FIG2 is a structural diagram of the air duct system from another perspective in one embodiment of the present application.

[0024] FIG3 is a schematic diagram of the exploded structure of the air duct system in one embodiment of the present application.

[0025] FIG4 is a schematic diagram of the decomposed structure of the air duct system in one embodiment of the present application from another perspective.

[0026] FIG5 is a schematic diagram of the exploded structure of the air duct cavity in one embodiment of the present application.

[0027] FIG6 is a schematic diagram of the decomposed structure of the air duct cavity in one embodiment of the present application from another perspective.

[0028] FIG7 is a schematic cross-sectional view of the air duct cavity in a first state in one embodiment of the present application.

[0029] FIG8 is a schematic cross-sectional view of the air duct cavity in the second state in one embodiment of the present application.

[0030] FIG9 is a schematic cross-sectional view of the air duct cavity in the third state in one embodiment of the present application.

[0031] FIG10 is a schematic cross-sectional view of the air duct cavity in the fourth state in one embodiment of the present application.

[0032] FIG11 is a schematic side cross-sectional view of the air duct cavity in one embodiment of the present application.

[0033] FIG12 is a schematic structural diagram of the air duct cavity in FIG11 with the damper in a closed state.

[0034] FIG13 is another side cross-sectional structural diagram of the air duct cavity in one embodiment of the present application.

[0035] FIG14 is a schematic structural diagram of the air duct cavity in FIG13 with the damper in a closed state.

[0036] FIG15 is a schematic diagram of the top view of the air duct system in one embodiment of the present application.

[0037] FIG16 is a schematic diagram of the exploded structure of the air duct system in one embodiment of the present application.

[0038] FIG17 is a schematic diagram of a partial cross-sectional structure of an air duct system in one embodiment of the present application.

[0039] FIG18 is a schematic diagram of a partial cross-sectional structure of an air duct system in one embodiment of the present application.

[0040] FIG19 is a schematic cross-sectional view of the fifth state of the air duct system in one embodiment of the present application.

[0041] FIG20 is a schematic cross-sectional structural diagram of the sixth state of the air duct system in one embodiment of the present application.

[0042] FIG21 is a schematic cross-sectional structural diagram of the seventh state of the air duct system in one embodiment of the present application.

[0043] FIG22 is a schematic cross-sectional structural diagram of the air duct system in the eighth state in one embodiment of the present application.

[0044] FIG23 is a schematic diagram of the cross-sectional structure of the air duct system in one embodiment of the present application.

[0045] FIG24 is a schematic diagram of the three-dimensional structure of the middle sweep assembly in one embodiment of the present application.

[0046] FIG25 is a schematic diagram of a partially exploded structure of a middle sweep assembly in one embodiment of the present application.

[0047] FIG26 is a schematic diagram of a partial cross-sectional structure of an air duct system in one embodiment of the present application.

[0048] The accompanying drawings are numbered as follows: 1. Single-fan dual-channel assembly; 10. Air duct cavity; 11. First cover; 111A. First air inlet; 111B. Second air inlet; 112. Sealant; 12. Second cover; 121. Air outlet; 122. Guide hole; 123. Guide rod; 124. Guide groove; 125. Elastic member; 126. Fixing seat; 127. Sealing ring; 128. First buckling portion; 129. Limiting groove; 13A. First air door; 13B. Second air door; 131. Second buckling portion; 132. Limiting rib; 14. Concave position; 20. Fan; 21. Air inlet duct; 211. Channel entrance; 212. Channel exit; 22. Air outlet duct; 30. Dust box; 31. Dust box entrance; 32. Dust box outlet; 33. First inclined surface; 34. Filter; 40. Sewage tank; 41. Sewage tank inlet; 42. Sewage tank outlet; 43. Second inclined surface; 44. Nylon mesh air outlet; 45. Sponge;

[0049] 2. Middle sweep assembly;

[0050] 51. Middle sweep chamber; 511. Middle sweep swing shaft; 512. First dust exhaust port; 52. Middle sweep roller brush; 53. Middle sweep lifting mechanism; 531. Motor; 532. First synchronous belt; 533. Second synchronous belt; 534. Crankshaft; 535. Middle sweep shaft; 536. One-way bearing; 537. Rocker; 538. Roller; 539. Crank; 54. Middle sweep top rod;

[0051] 3. Washing and mopping components;

[0052] 61. Wash and mop chamber; 611. Wash and mop swing shaft; 612. Second dust outlet; 62. Wash and mop roller brush; 64. Wash and mop top rod;

[0053] 4. Bottom shell; 71. Fixing slot. DETAILED DESCRIPTION

[0054] Although the present application can be easily embodied in different forms of embodiments, only some of the specific embodiments are shown in the drawings and will be described in detail in this specification. It should be understood that this description should be regarded as an exemplary illustration of the principles of the application and is not intended to limit the application to what is described herein.

[0055] Thus, a feature indicated in this specification will be used to illustrate one of the features of one embodiment of the present application, rather than implying that each embodiment of the present application must have the described feature. In addition, it should be noted that this specification describes many features. Although certain features can be combined together to illustrate possible system designs, these features can also be used in other, not explicitly described, combinations. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0056] In the embodiments shown in the accompanying drawings, directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of various components of the present application are not absolute but relative. These descriptions are applicable when these components are in the positions shown in the accompanying drawings. If the descriptions of the positions of these components are changed, these directional indications will also change accordingly.

[0057] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that the description of this application will be more comprehensive and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The accompanying drawings are merely schematic illustrations of the present application and are not necessarily drawn to scale. Identical reference numerals in the figures indicate identical or similar parts, and thus repeated descriptions thereof will be omitted.

[0058] The present application provides a cleaning device, which includes an air duct system. The air duct system is used for the cleaning device to vacuum and clean a target object (such as the ground, etc.).

[0059] Example 1 (as shown in Figures 1 to 14)

[0060] The air duct system includes a single-fan multi-channel component. Through the single-fan multi-channel component, one fan 20 can be used to provide power to any one of the multiple channels, or to provide power to any number of the multiple channels at the same time. In this way, while meeting the dust collection requirements of the cleaning device in different cleaning modes, the number of fans 20 in the cleaning device can be streamlined, costs can be reduced, and the space volume of the product can be saved.

[0061] Alternatively, the single-fan multi-channel assembly can be configured as a single-fan dual-channel assembly 1 as shown in FIG1 , so that a single fan 20 can be used to power either of the two channels, or to power both channels simultaneously. Of course, the present application is not limited thereto. In other embodiments, the single-fan multi-channel assembly can also be configured as a single-fan three-channel assembly, a single-fan four-channel assembly, a single-fan five-channel assembly, etc.

[0062] For example, as shown in FIG1 , the single-fan dual-channel assembly 1 includes an air duct cavity 10 , a fan 20 , a first accommodating box, and a second accommodating box.

[0063] 1 to 6 , the air duct cavity 10 is provided with an air outlet 121, two or more air inlets (the air inlets can be specifically understood by referring to the first air inlet 111A and / or the second air inlet 111B), and two or more air gates (the air gates can be specifically understood by referring to the first air gate 13A and / or the second air gate 13B).

[0064] Each air inlet is provided with a damper to control the connection and disconnection between the corresponding air inlet and the air outlet 121. The air inlet of the fan 20 is connected to the air outlet 121, the first storage box is connected to one of the air inlets, and the second storage box is connected to the other air inlet.

[0065] To give a more detailed example, the cleaning device is, for example, a cleaning robot that can wash and sweep all in one. It can be understood that the cleaning robot that can wash and sweep all in one has a vacuuming mode and a washing and mopping mode. Accordingly, the cleaning robot that can wash and sweep all in one includes the single-fan dual-channel component 1. Through the fan 20 of the single-fan dual-channel component 1 and one of the channels (channel such as the first air inlet 111A-air outlet 121), power can be provided for the vacuuming mode of the cleaning robot. Through the fan 20 of the single-fan dual-channel component 1 and another channel (channel such as the second air inlet 111B-air outlet 121), power can be provided for the washing and mopping mode of the cleaning robot.

[0066] It can be understood that the air outlet 121 of the air duct cavity 10 and the first air inlet 111A, when connected, form a corresponding channel, and the air outlet 121 of the air duct cavity 10 and the second air inlet 111B, when connected, form another channel. Therefore, it can be understood that the number of air inlets corresponds to the number of channels. For example, in conjunction with Figures 3 and 4, it can be understood that for a single-fan dual-channel assembly 1, corresponding to the dual-channel design, the air duct cavity 10 is provided with a first air inlet 111A and a second air inlet 111B, wherein the air intake of the fan 20 is connected to the air outlet 121, the first storage box is specifically, for example, a dust box 30, the dust box outlet 32 ​​of the dust box 30 is connected to the first air inlet 111A, and the second storage box is specifically, for example, a sewage tank 40, the sewage tank outlet 42 of the sewage tank 40 is connected to the second air inlet 111B. A first damper 13A is provided corresponding to the first air inlet 111A, and a second damper 13B is provided corresponding to the second air inlet 111B.

[0067] For example, in combination with Figures 7 and 17, it can be understood that in the dust suction mode, the first air door 13A can be used to control the first air inlet 111A and the air outlet 121 to be connected, and the second air door 13B can be used to control the second air inlet 111B and the air outlet 121 to be cut off, so that the fan 20 drives the airflow to suck the dust into the dust box 30.

[0068] Further optionally, as shown in Figure 17, a filter 34 is provided in the dust box 30 on the air flow path between the dust box inlet 31 and the dust box outlet 32. The filter 34 is used to filter the dust and retain it in the dust box 30, reduce the dust entering the fan 20, and avoid secondary pollution problems.

[0069] For example, in combination with Figures 8 and 18, it can be understood that in the wash and mop mode, the first air door 13A can be used to control the first air inlet 111A and the air outlet 121 to be cut off, and the second air door 13B can be used to control the second air inlet 111B and the air outlet 121 to be connected, so that the fan 20 drives the airflow to suck dust and / or sewage into the sewage tank 40.

[0070] Further optionally, as shown in Figure 18, a nylon mesh air outlet 44 and a sponge 45 are provided in the sewage tank 40 on the air flow path between the sewage tank inlet 41 and the sewage tank outlet 42. The sponge 45 is provided on the downstream side of the air flow of the nylon mesh air outlet 44. The nylon mesh air outlet 44 is used to filter dust and retain it in the sewage tank 40. The sponge 45 is used to filter moisture to reduce the humidity of the air flow at the sewage tank outlet 42, reduce the dust and water ingress into the fan 20, and avoid secondary pollution problems.

[0071] For example, as shown in Figure 9, in other modes (such as the front sweep and rear wash mode), the first air door 13A can be used to control the connection between the first air inlet 111A and the air outlet 121, and the second air door 13B can be used to control the connection between the second air inlet 111B and the air outlet 121, so that the fan 20 drives the airflow to suck dust and / or sewage into the sewage tank 40, and drives the airflow to suck dust into the dust box 30.

[0072] For example, as shown in FIG10 , in other modes (such as shutdown mode, walking mode, etc.), the first damper 13A can be used to control the first air inlet 111A and the air outlet 121 to be cut off, and the second damper 13B can be used to control the second air inlet 111B and the air outlet 121 to be cut off.

[0073] By providing a first damper 13A corresponding to the first air inlet 111A and a second damper 13B corresponding to the second air inlet 111B, and utilizing the first and second dampers 13A, 13B to independently control the connection and disconnection between the first air inlet 111A / second air inlet 111B and the air outlet 121, the same fan 20 can be used to power either channel, or both channels simultaneously. This allows the same fan 20 to power both channels simultaneously, while achieving the same dual-channel functionality as a conventional dual-fan 20 for integrated cleaning and sweeping. The first and second storage boxes, or dust box 30 and sewage tank 40, share a single fan 20 and air duct cavity 10, reducing the number of fans 20 and air ducts, thereby saving both cost and space.

[0074] Of course, the present application is not limited to this. In other embodiments, for example, for a single-fan three-channel component, corresponding to the three-channel design, three air inlets and three dampers corresponding to the three air inlets are set on the air duct cavity 10; for a single-fan four-channel component, corresponding to the four-channel design, four air inlets and four dampers corresponding to the four air inlets are set on the air duct cavity 10.

[0075] Of course, the first storage box and / or the second storage box of the present application are not limited to the dust box 30 and / or the sewage box 40 exemplified. In other embodiments, the first storage box and / or the second storage box may also be a box body of other functional components.

[0076] Optionally, the air duct cavity 10 can be configured as a long strip cavity as shown in Figure 3, and a first air inlet 111A and a second air inlet 111B are provided on the side wall of one side of the air duct cavity 10, and the first air inlet 111A and the second air inlet 111B are arranged side by side at intervals along the length direction of the air duct cavity 10, wherein the dust box 30 and the sewage box 40 are located on the side of the air duct cavity 10 where the first air inlet 111A and the second air inlet 111B are provided, and the dust box 30 and the sewage box 40 are arranged side by side along the length direction of the air duct cavity 10, and a dust box outlet 32 ​​is provided on the side wall of the dust box 30, and the dust box outlet 32 ​​is connected to the side of the first air inlet 111A to achieve communication, and a sewage box outlet 42 is provided on the side wall of the sewage box 40, and the sewage box outlet 42 is connected to the side of the second air inlet 111B to achieve communication. In this way, the dust box 30, the sewage box 40, and the air duct cavity 10 are arranged compactly, which helps to save the space volume of the product.

[0077] Optionally, the first air inlet 111A and / or the second air inlet 111B can be configured as a rectangular opening as shown in FIG4 , with the length direction of the first air inlet 111A and / or the second air inlet 111B being substantially consistent with the length direction of the air duct cavity 10. In this way, the shape of the air duct cavity 10 is fully combined to achieve a larger area of ​​the first air inlet 111A and / or the second air inlet 111B, which is beneficial for improving driving efficiency while saving product space volume. Of course, the present application is not limited to this. In other embodiments, the shape of the first air inlet 111A and / or the second air inlet 111B can also be configured as a circle, an ellipse, a square, etc.

[0078] Optionally, the fan 20 is arranged close to the side of the air duct cavity 10 facing away from the sewage tank 40 and the dust box 30, so as to achieve a compact arrangement between the air duct cavity 10, the fan 20, the sewage tank 40 and the dust box 30, further saving the space volume of the product.

[0079] The air outlet 121 is provided on the bottom wall of the air duct cavity 10. The air outlet 121, the first air inlet 111A, and the second air inlet 111B are arranged in sequence along the length direction of the air duct cavity 10. A recess 14 is provided on the side wall of the air duct cavity 10 on the side facing away from the dust box 30 and the sewage tank 40 at the position corresponding to the air outlet 121. A portion of the fan 20 is embedded in the recess 14 to further save the space volume of the product.

[0080] To connect the fan 20 to the air outlet 121 at the bottom of the air duct cavity 10, an air inlet duct 21 is provided for the fan 20. A channel inlet 211 and a channel outlet 212 are spaced apart at the top of the air inlet duct 21. The air inlet duct 21 is located below the air duct cavity 10, and the channel inlet 211 is connected to the air outlet 121 vertically. The air inlet duct 21 is located below the fan 20, and the air intake of the fan 20 is connected to the channel outlet 212 vertically. Optionally, the fan 20 is also provided with an air outlet duct 22 for exhausting air.

[0081] Optionally, the fan 20 is a centrifugal fan, which can have greater wind pressure and driving force to better meet the driving requirements of more than two channels.

[0082] The following will take the first damper 13A and the first air inlet 111A as an example to further illustrate the coordination between the first damper 13A and the first air inlet 111A, the movement of the first damper 13A, and the connection between the first damper 13A and the air duct cavity 10. It is understood that the coordination between the second damper 13B and the second air inlet 111B can be understood by referring to the example of the first damper 13A and the first air inlet 111A.

[0083] For example, the first damper 13A is configured to be able to move relative to the air duct cavity 10, and to switch between a position of shielding the first air inlet 111A and a position of opening the first air inlet 111A by moving relative to the air duct cavity 10, wherein, when the first damper 13A is located at the position of shielding the first air inlet 111A, the first air inlet 111A and the air outlet 121 are cut off, and when the first damper 13A is located at the position of opening the first air inlet 111A, the first air inlet 111A and the air outlet 121 are connected.

[0084] 7 to 10 , it can be understood that the first damper 13A is configured to be movable back and forth along a preset direction to switch between a position shielding the first air inlet 111A and a position opening the first air inlet 111A.

[0085] Of course, the present application is not limited thereto. In other embodiments, the damper may also be configured to rotate relative to the air duct cavity 10 and switch between a position that shields the air inlet and a position that opens the air inlet by rotating.

[0086] Optionally, the preset direction may be configured as a lifting direction, in other words, as an up-down direction. Of course, the present application is not limited thereto, and in other embodiments, the preset direction may also be configured as a left-right direction, etc.

[0087] Optionally, each damper on the air duct cavity 10 is provided with a guide hole 122 and a guide rod 123 extending through the guide hole 122. The guide rod 123 is movable axially along the guide hole 122. The first damper 13A is disposed on the guide rod 123 and moves synchronously with the guide rod 123 to switch between a position shielding the first air inlet 111A and a position opening the first air inlet 111A. In this way, the guide rod 123 cooperates with the guide hole 122 to guide the displacement of the first damper 13A, preventing the first damper 13A from swaying during displacement. Furthermore, the precision of the fit between the first damper 13A and the first air inlet 111A can be better ensured, thereby ensuring a corresponding sealing effect on the first air inlet 111A.

[0088] Optionally, the guide rod 123 is a metal rod, which provides more reliable and precise guidance for the first damper 13A, and is also beneficial for improving the first damper 13A's ability to bear wind pressure when shielding the first air inlet 111A, thereby improving the sealing reliability of the first damper 13A.

[0089] Further optionally, the guide rod 123 is an iron shaft.

[0090] One end of the guide rod 123 passes through the guide hole 122 to extend into the air duct cavity 10 and connect with the first damper 13A. The other end of the guide rod 123 is located outside the air duct cavity 10 and is provided with a fixed seat 126. The end of the guide rod 123 provided with the fixed seat 126 can be pressed to link the movement of the first damper 13A. An elastic member 125 is abutted between the fixed seat 126 and the air duct cavity 10. The elastic force of the elastic member 125 is used to drive the guide rod 123 to reset the first damper 13A. In this way, the guide rod 123 can be driven to control the first damper 13A to open or close the first air inlet 111A accordingly. When the guide rod 123 is no longer pressed, the first damper 13A automatically resets under the drive of the elastic member 125, so that the first damper 13A automatically closes or opens the first air inlet 111A. It has the advantages of simple structure, convenient actuation, and high response accuracy to the actuation of the first damper 13A.

[0091] Furthermore, the air duct cavity 10 is provided with a guide groove 124 with an outward opening, a guide hole 122 is located on and penetrates the bottom wall of the guide groove 124, and a fixing seat 126 and an elastic member 125 are located in the guide groove 124. The fixing seat 126 can move along the guide groove 124 and is adapted to guide the guide groove 124. The fixing seat 126 is adapted to guide the guide groove 124, which can provide a larger axial displacement stroke for the guide rod 123, while ensuring a more precise coaxial fit between the guide rod 123 and the guide hole 122, so that the guide rod 123 will not deflect arbitrarily, thereby correspondingly improving the smoothness of the movement of the first damper 13A, making it less likely for the first damper 13A to deflect or shake during the displacement movement.

[0092] Optionally, the guide groove 124 may be configured as a rectangular groove as shown in FIG. 4 , and correspondingly, the fixing seat 126 may be configured as a rectangular block.

[0093] Optionally, a sealing ring 127 is provided on the guide rod 123. The sealing ring 127 is located in the air duct cavity 10, between the connecting end of the guide rod 123 and the first air door 13A and the guide groove 124. It can be used to seal the gap between the guide rod 123 and the guide hole 122 to reduce air leakage in the air duct cavity 10. When the guide rod 123 is reset based on the elastic force of the elastic member 125, the sealing ring 127 is used to buffer between the connecting end of the guide rod 123 and the first air door 13A and the guide groove 124, which can also play a role in noise reduction and shock absorption.

[0094] Optionally, a sealant 112 is embedded in the edge of the first air inlet 111A. When the first damper 13A is located to shield the first air inlet 111A, the sealant 112 abuts against the first damper 13A to seal the gap between the first damper 13A and the first air inlet 111A. This can further enhance the sealing effect of the first damper 13A on the first air inlet 111A.

[0095] Furthermore, the first air inlet 111A and the first damper 13A are both arranged to be inclined relative to the aforementioned preset direction.

[0096] For example, the preset direction can be roughly understood as the OB direction as shown in Figure 11. The setting direction of the first damper 13A is, for example, the OA direction, and OB is set at an angle to OA, that is, the value of ∠AOB is greater than 0°. The setting direction of the first air inlet 111A is such as the X1-X2 direction, and the X1-X2 direction is roughly parallel to the OA direction, and thus is also inclined relative to the OB direction. In this way, from the state shown in Figure 11, when the first damper 13A approaches the first air inlet 111A along the OB direction until it switches to the state shown in Figure 12, during this process, the first damper 13A is roughly obliquely close to the sealant 112 at the first air inlet 111A, so that the first damper 13A can fit well with the sealant 112 of the first air inlet 111A which is also inclined (as shown in Figure 12), and during the displacement movement of the first damper 13A, the lateral shear force of the first damper 13A on the sealant 112 can be reduced, and the friction between the first damper 13A and the sealant 112 is reduced, thereby better extending the life of the sealant 112.

[0097] Correspondingly, the dust box 30 includes a first inclined surface 33, which is located around the dust box outlet 32. The first air door 13A is arranged opposite to the dust box outlet 32. The sealant 112 is inclined at one end away from the first air door 13A and abuts against the first inclined surface 33.

[0098] Correspondingly, the sewage tank 40 includes a second inclined surface 43, which is located around the sewage tank outlet 42. The second air inlet 111B is arranged opposite to the sewage tank outlet 42. The sealant 112 is inclined at one end away from the second damper 13B and abuts against the second inclined surface 43.

[0099] As shown in Figure 5, in order to achieve a smoother displacement movement of the first air door 13A, limiting ribs 132 are provided on opposite sides of the first air door 13A, wherein limiting grooves 129 are provided on the air duct cavity 10 corresponding to each limiting rib 132. The limiting grooves 129 can be set to C-shaped grooves as shown in Figure 5. The limiting ribs 132 at both ends of the baffle are correspondingly inserted into the corresponding limiting grooves 129. During the displacement movement of the first air door 13A, the limiting ribs 132 slide along the limiting grooves 129, thereby limiting the position of the first air door 13A, so that the first air door 13A is not easy to shake at will, thereby improving stability.

[0100] In order to achieve the stability and sealing strength of the first damper 13A at the position of blocking the first air inlet 111A, a first buckle 128 is provided on the air duct cavity 10, and a second buckle 131 is provided on the first damper 13A. When the first damper 13A moves to the position of completely blocking the first air inlet 111A, the first buckle 128 and the second buckle 131 are buckled to lock the first damper 13A and the air duct cavity 10 together (as shown in FIG14 ). In this way, the first damper 13A can better withstand wind pressure and is not prone to shaking or air leakage gaps driven by wind pressure. When the first damper 13A moves from the position of blocking the first air inlet 111A to the position of opening the first air inlet 111A, the first buckle 128 and the second buckle 131 are disengaged (as shown in FIG13 ).

[0101] Optionally, the first snap-fitting portion 128 and the second snap-fitting portion 131 may be hook structures that match each other. By hooking and cooperating with the first snap-fitting portion 128 and the second snap-fitting portion 131, the first damper 13A may be promoted to be stable, so that when the fan 20 is running in the state where the first damper 13A covers the first air inlet 111A, good sealing can be maintained at the first air inlet 111A.

[0102] To give a more specific example, the air duct cavity 10 includes a first cover 11 and a second cover 12. The second cover 12 is docked on the lower side of the first cover 11. The first cover 11 and the second cover 12 can be sealed and fixed using a dispensing process to enclose the air duct cavity 10. The first air inlet 111A and the second air inlet 111B are arranged side by side on the side wall of the first cover 11. The first damper 13A and the second damper 13B are both accommodated in the air duct cavity 10. The second cover 12 is provided with a limiting groove 129, a guide hole 122, a guide rod 123, an elastic member 125, etc. to achieve a movable connection between the first damper 13A and / or the second damper 13B and the second cover 12. The bottom surface of the second cover 12 is provided with an air outlet 121 and a guide groove 124 with an opening at the bottom. The fixing seat 126 and the elastic member 125 are located in the guide groove 124. This structure can achieve rapid installation between the first damper 13A and the air duct cavity 10, which is beneficial to mass production of products.

[0103] The first and second storage boxes are arranged side by side on the sides of the first cover 11. The outlet of the first storage box is connected to the side of the first air inlet 111A, and the outlet of the second storage box is connected to the side of the second air inlet 111B. The air inlet duct 21 of the fan 20 is located below the second cover 12 and is connected to the air outlet 121 in a vertically connected manner. The air outlet duct 22 is located on the side of the first and second covers 11 and 12 away from the first and second storage boxes, and is connected to the air inlet duct 21 in a vertically connected manner. This structure achieves a compact layout of the airflow system of the cleaning device, further saving product space.

[0104] Example 2 (as shown in Figures 15 to 26)

[0105] The air duct system includes a fan 20, an air duct cavity 10, a first container, and a second container. Unless otherwise specified, the fan 20, the air duct cavity 10, the first container, and the second container can be understood with reference to the example in the first embodiment above, and will not be repeated here.

[0106] In this embodiment, the air duct system further includes a bottom housing 4, and a first cleaning assembly and a second cleaning assembly disposed on the bottom housing 4. The fan 20, air duct cavity 10, first and second storage boxes are disposed above the bottom housing 4. See Figure 15 , which illustrates the arrangement of the fan 20, air duct cavity 10, first and second storage boxes on the bottom housing 4. As shown in Figure 16 , the first and second cleaning assemblies are disposed below the bottom housing 4.

[0107] For example, the first cleaning component is the middle sweeping component 2, and correspondingly, the first receiving box is the dust box 30. The second cleaning component is the washing and mopping component 3, and correspondingly, the second receiving box is the sewage tank 40.

[0108] Of course, it can be understood that the first cleaning component and / or the second cleaning component are not limited to the exemplified middle sweeping component 2 and the washing and mopping component 3. In other embodiments, the first cleaning component and / or the second cleaning component can be replaced with other cleaning functional components.

[0109] The middle sweep assembly 2 and the wash and mop assembly 3 are configured to be independently raised and lowered relative to the bottom shell 4 .

[0110] It can be understood that the middle sweep assembly 2 is used to clean the floor. When the middle sweep assembly 2 is lowered, the middle sweep assembly 2 can contact the floor to perform cleaning and dust collection. As shown in FIG17 , since the middle sweep assembly 2 is connected to the dust box 30, the negative pressure generated by the fan 20 in the dust box 30 can suck the dust swept from the floor by the middle sweep assembly 2 into the dust box 30. When the middle sweep assembly 2 is raised, the middle sweep assembly 2 can be separated from the floor to avoid secondary contamination of the floor.

[0111] It can be understood that the washing and mopping assembly 3 is used to wash and mop the floor. When the washing and mopping assembly 3 is lowered, the washing and mopping assembly 3 can contact the floor to perform washing, mopping, and dust collection operations on the floor. As shown in FIG18 , since the second dust discharge port 612 of the washing and mopping assembly 3 is connected to the sewage tank 40, the negative pressure generated by the fan 20 in the sewage tank 40 can suck the dust removed from the floor by the washing and mopping assembly 3 into the sewage tank 40. When the washing and mopping assembly 3 is raised, the washing and mopping assembly 3 can be separated from the floor to avoid secondary contamination of the floor.

[0112] The first damper 13A is linked to the middle sweep assembly 2, enabling the middle sweep assembly 2 to rise, thereby driving the first damper 13A to block the corresponding first air inlet 111A from the air outlet 121. When the middle sweep assembly 2 descends, the first damper 13A controls the corresponding first air inlet 111A from the air outlet 121. Thus, when the middle sweep assembly 2 descends, the first damper 13A opens the air outlet 121, allowing the fan 20 to smoothly draw swept dust into the dust box 30. When the middle sweep assembly 2 ascends, the first damper 13A blocks the first air inlet 111A, reducing wind pressure loss.

[0113] In the following, the structures involved in the lifting movement of the middle sweep assembly 2 will be illustrated with reference to Figures 23, 24, 25, and 26, taking the middle sweep assembly 2 as an example.

[0114] The middle sweep assembly 2 includes a middle sweep cavity 51 , a middle sweep roller brush 52 accommodated in the middle sweep cavity 51 , a middle sweep lifting mechanism 53 arranged at one end of the middle sweep cavity 51 , and a middle sweep top rod 54 arranged on the middle sweep cavity 51 .

[0115] A middle sweep swing shaft 511 is provided on the middle sweep cavity 51. The number of the middle sweep swing shafts 511 can be set to two as shown in Figure 24. The two middle sweep swing shafts 511 are respectively rotatably connected to the bottom shell 4, so that the middle sweep cavity 51 can rotate around the middle sweep swing shaft 511 relative to the bottom shell 4, thereby rising and falling relative to the bottom shell 4.

[0116] The middle sweeping cavity 51 is further provided with a first dust exhaust port 512 , which is connected to the dust box inlet 31 .

[0117] The middle sweep lifting mechanism 53 includes a motor 531 , a first synchronous belt 532 , a second synchronous belt 533 , a crank shaft 534 , a middle sweep shaft 535 , a one-way bearing 536 , a crank 539 , a rocker 537 , and a roller 538 .

[0118] The motor shaft of the motor 531 is connected to the pulley at the first end of the first synchronous belt 532 for driving the first synchronous belt 532 to move. The crank 539 is connected to the pulley at the second end of the first synchronous belt 532 through a one-way bearing 536. One end of the rocker 537 is eccentrically connected to the crank 539. The other end of the rocker 537 is provided with a roller 538. The roller 538 is embedded in the fixed groove 71 of the bottom shell 4. When the crank 539 rotates under the drive of the motor 531, it drives the rocker 537 to swing. The rocker 537 drives the middle sweep cavity 51 to swing up and down around the middle sweep swing axis 511 relative to the bottom shell 4 through swinging.

[0119] The pulley at the first end of the second synchronous belt 533 is coaxially connected to the pulley at the second end of the first synchronous belt 532, the pulley at the second end of the second synchronous belt 533 is connected to the middle sweep shaft, and the middle sweep roller brush 52 is transmission connected to the middle sweep shaft.

[0120] Among them, when the motor shaft of the motor 531 rotates along the first direction, the transmission path of the motor 531-first synchronous belt 532-one-way bearing 536-crank 539-rocker 537 is used to drive the rocker 537 to swing, so that the middle sweep assembly 2 as a whole is driven to swing relative to the bottom shell 4 based on the middle sweep swing axis 511 through the swing of the rocker 537, thereby realizing the rising or falling of the middle sweep assembly 2.

[0121] When the motor shaft of the motor 531 rotates in the second direction, due to the limiting effect of the one-way bearing 536, the crank 539 of the middle sweep assembly 2 will not rotate under the drive of the motor 531. Therefore, the middle sweep assembly 2 will not rise or fall under the drive of the motor 531. At this time, the transmission path of the motor 531-first synchronous belt 532-second synchronous belt 533-middle sweep shaft-middle sweep roller brush 52 is used to drive the middle sweep roller brush 52 to rotate to clean the floor.

[0122] A central sweep rod 54 is provided on the central sweep chamber 51. This rod corresponds to a fixed seat 126 within the guide groove 124 at the bottom of the air duct chamber 10. When the central sweep assembly 2 ascends, the central sweep rod 54 rises accordingly, lifting the fixed seat 126 to which the damper is connected via the guide rod 123. This allows the damper to cover the first air inlet 111A under the drive of the fixed seat 126. When the central sweep assembly 2 descends, the central sweep rod 54 releases the fixed seat 126. At this point, the guide rod 123 descends under the drive of the elastic member 125, causing the damper to descend accordingly, opening the first air inlet 111A.

[0123] It can be understood that the washing and mopping assembly 3 has a lifting function similar to that of the middle sweeping assembly 2. In the absence of conflict, the washing and mopping assembly 3 can also have a washing and mopping cavity 61 (i.e., the cavity part), a washing and mopping roller brush 62 (i.e., the cleaning unit) accommodated in the washing and mopping cavity 61, a washing and mopping lifting mechanism arranged at one end of the washing and mopping cavity 61, a washing and mopping top rod 64 arranged on the washing and mopping cavity 61, a washing and mopping swing shaft 611 (i.e., the swing shaft), a second dust exhaust port 612 and other structural features. The connection relationship and position of these structural features can be roughly understood by referring to the relevant description of the middle sweeping assembly 2 for adaptive understanding, and will not be repeated here.

[0124] The lifting and lowering drive of the middle sweeping component 2 and / or the washing and mopping component 3 is realized by the above-mentioned lifting mechanism, and the driving motor 531 of the cleaning unit of the middle sweeping component 2 and / or the washing and mopping component 3 is reused to realize the lifting and lowering drive, which can further reduce the number of motors 531.

[0125] In the air duct system of this embodiment, the first cleaning component and the second cleaning component both have a lifting function. Through the top rods of the two cleaning components, namely the middle sweeping top rod 54 and the washing and mopping top rod 64, they contact the guide rod 123 of the first air door 13A corresponding to the first air inlet 111A of the air duct cavity 10 and the guide rod 123 of the second air door 13B corresponding to the second air inlet 111B, thereby realizing the linkage effect of the first air door 13A and / or the second air door 13B automatically opening as the first cleaning component and / or the second cleaning component rises, which has the advantages of simple structure and high response accuracy. When the guide rod 123 of the first air door 13A corresponding to the first air inlet 111A and the guide rod 123 of the second air door 13B corresponding to the second air inlet 111B are not pressed by the corresponding middle sweeping top rod 54 and the washing and mopping top rod 64, the guide rod 123 of the first air door 13A corresponding to the first air inlet 111A and the guide rod 123 of the second air door 13B corresponding to the second air inlet 111B are driven to reset by their respective corresponding elastic members 125, so that the guide rod 123 moves downward, and the first air door 13A and / or the second air door 13B automatically opens.

[0126] For the single wash and mop mode, as shown in Figure 19, at this time, the middle sweep assembly 2 is in a raised state, and accordingly, the guide rod 123 of the first air door 13A is lifted by the middle sweep top rod 54, and the first air inlet 111A is blocked by the first air door 13A, that is, the dust box outlet 32 ​​is closed; at this time, the wash and mop assembly 3 is in a descending state, the wash and mop assembly 3 is in contact with the ground H, and the wash and mop top rod 64 does not lift the guide rod 123 of the second air door 13B. The second air door 13B descends and resets under the drive of the corresponding elastic member 125, and the second air inlet 111B is opened, that is, the sewage tank outlet 42 is opened.

[0127] For the single sweeping mode, as shown in Figure 20, the washing and mopping assembly 3 is in a raised state, and accordingly, the guide rod 123 of the second air door 13B is lifted by the washing and mopping top rod 64, and the second air inlet 111B is blocked by the second air door 13B, that is, the sewage tank outlet 42 is closed; at this time, the middle sweep assembly 2 is in a lowered state, the middle sweep assembly 2 is in contact with the ground H, the middle sweep top rod 54 does not lift the guide rod 123 of the first air door 13A, and the first air door 13A descends and resets under the drive of the corresponding elastic member 125, and the first air inlet 111A is opened, that is, the dust box outlet 32 ​​is opened.

[0128] Similarly, there are two other modes. As shown in Figure 21, when both the wash-mop assembly 3 and the middle sweep assembly 2 are lowered, the first air inlet 111A and the second air inlet 111B are both open, which is the sweep-and-wash mode, such as sweeping the front and washing the back. As shown in Figure 22, when both the wash-mop assembly 3 and the middle sweep assembly 2 are raised, the first air inlet 111A and the second air inlet 111B are both closed, which means the cleaning mode is not in effect. For example, when returning to the base station after cleaning to avoid secondary contamination of the ground or to overcome obstacles, the cleaning mode can be avoided by raising both the middle sweep assembly 2 and the wash-mop assembly 3.

[0129] In this embodiment, the first damper 13A and / or the second damper 13B are opened or closed in a linked manner in response to the lifting status of the first cleaning component and / or the second cleaning component, which has the advantages of high response accuracy and simplified structure. There is no need to additionally configure the motor 531 for driving the first damper 13A, which reduces costs and simplifies the product's operating logic.

[0130] Although the present application has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary rather than restrictive. Since the present application can be embodied in various forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. An air duct system of a cleaning device, characterized in that, Comprising: An air duct cavity, provided with an air outlet, more than two air inlets, and more than two air dampers. Each of the air inlets is correspondingly provided with one of the air dampers to control the conduction and cut-off between the air inlet and the air outlet through the air damper; A blower, the suction port of the blower being communicated with the air outlet; A first accommodating box, communicated with at least one of the corresponding air inlets; A second accommodating box, communicated with at least one of the corresponding air inlets.

2. The air duct system of the cleaning device according to claim 1, wherein The air damper is configured to be movable relative to the air duct cavity, and switches between a position where the air inlet is shielded and a position where the air inlet is opened by moving relative to the air duct cavity. Wherein, when the air damper is in the position where the air inlet is shielded, the air inlet and the air outlet are cut off, and when the air damper is in the position where the air inlet is opened, the air inlet and the air outlet are conducted.

3. The air duct system of the cleaning device according to claim 2, wherein The air duct cavity is correspondingly provided with a guiding hole and a guiding rod passing through the guiding hole for each of the air dampers. The guiding rod can move axially along the guiding hole, and the air damper is arranged on the guiding rod and moves synchronously with the guiding rod to switch between a position where the air inlet is shielded and a position where the air inlet is opened.

4. The air duct system of the cleaning device according to claim 3, wherein One end of the guiding rod passes through the guiding hole and extends into the air duct cavity to be connected with the air damper. The other end of the guiding rod is located outside the air duct cavity and is provided with a fixing seat. One end of the guiding rod provided with the fixing seat can be pressed to drive the air damper to move. An elastic member is abutted between the fixing seat and the air duct cavity, and the elastic force of the elastic member is used to drive the guiding rod to drive the air damper to reset.

5. The air duct system of the cleaning device according to claim 4, wherein The air duct cavity is provided with a guiding groove opening outward. The guiding hole is located on the bottom wall of the guiding groove and penetrates the bottom wall of the guiding groove. The fixing seat and the elastic member are located in the guiding groove, and the fixing seat can move along the guiding groove and is guided and adapted to the guiding groove.

6. The air duct system of the cleaning device according to any one of claims 2 to 5, wherein The air duct cavity is provided with a first fastening portion, and the air damper is provided with a second fastening portion. When the air damper reaches the position of blocking the air inlet, the first fastening portion and the second fastening portion are fastened together to lock the air damper and the air duct cavity together. When the air damper moves from the position of blocking the air inlet to the position of opening the air inlet, the first fastening portion and the second fastening portion are unlocked; and / or Both opposite sides of the air damper are provided with limiting ribs, and limiting grooves are arranged in the air duct cavity. The limiting ribs are located in the limiting grooves and can slide along the limiting grooves.

7. The air duct system of the cleaning device according to any one of claims 2 to 5, wherein A sealant is nested at the edge of the air inlet. When the air damper is in the position of shielding the air inlet, the sealant abuts against the air damper to seal the gap between the air damper and the air inlet; The air damper is configured to be reciprocally displaceable along a preset direction to switch between a position of shielding the air inlet and a position of opening the air inlet. Wherein, both the air inlet and the air damper are inclined with respect to the preset direction.

8. The air duct system of the cleaning device according to claim 7, wherein The first receiving box and / or the second receiving box include an outlet and an inclined surface around the outlet. The air inlet is disposed opposite to the outlet. One end of the sealant away from the air damper is inclined and abuts against the inclined surface.

9. The air duct system of the cleaning device according to any one of claims 1 to 5, wherein The air duct cavity includes a first cover body and a second cover body. Two or more air inlets are arranged side by side on the side wall of the first cover body. The second cover body is docked on the lower side of the first cover body. Each air damper is located in the space surrounded by the first cover body and the second cover body and is respectively movably connected to the second cover body. The bottom surface of the second cover body is provided with the air outlet; The first receiving box and the second receiving box are arranged side by side on the side of the first cover body. The outlet of the first receiving box is connected to the side of one air inlet, and the outlet of the second receiving box is connected to the side of the other air inlet; The blower includes an air inlet duct and an air outlet duct. The air inlet duct is located below the second cover body and is vertically connected and communicated with the air outlet. The air outlet duct is located on the side of the first cover body and the second cover body away from the first receiving box and the second receiving box. The air outlet duct is vertically connected and communicated with the air inlet duct.

10. The air duct system of the cleaning device according to any one of claims 1 to 5, characterized in that, Further included: A first cleaning component, the first cleaning component is communicated with the first receiving box, and the first cleaning component is configured to be capable of lifting movement. Wherein, the air damper of the air inlet corresponding to the first receiving box is linked to the first cleaning component, so that the first cleaning component can drive the air damper to cut off between the corresponding air inlet and the air outlet by rising. When the first cleaning component descends, the air damper can control the conduction between the corresponding air inlet and the air outlet; A second cleaning component, the second cleaning component is communicated with the second receiving box, and the second cleaning component is configured to be capable of lifting movement. Wherein, the air damper of the air inlet corresponding to the second receiving box is linked to the second cleaning component, so that the second cleaning component can drive the air damper to cut off between the corresponding air inlet and the air outlet by rising. When the second cleaning component descends, the air damper can control the conduction between the corresponding air inlet and the air outlet.

11. The air duct system of the cleaning device according to claim 10, wherein A push rod for linking the air damper is provided on the first cleaning component and / or the second cleaning component.

12. A cleaning device, characterized in that, Comprising the air duct system according to any one of claims 1 to 11.

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