Cleaning device and air duct system thereof

Abstract

The invention provides a cleaning device and an air duct system thereof, and the air duct system comprises an air duct cavity which is provided with an air outlet, more than two air inlets and more than two air doors, each air inlet is correspondingly provided with one air door, and the air doors are used for controlling connection and disconnection between the air inlets and the air outlet; an exhaust inlet of the fan is communicated with the air outlet; the first accommodating box is communicated with at least one corresponding air inlet; and the second accommodating box is communicated with at least one corresponding air inlet. According to the cleaning device and the air duct system thereof, one draught fan can be used for providing power for any one of the multiple channels or providing power for any two or more of the multiple channels at the same time, the number of draught fans can be reduced, and cost is reduced.

Description

Technical Field

[0001] This application relates to the field of cleaning devices, and particularly to a cleaning device and an air duct system of a cleaning device. Background Art

[0002] For existing cleaning devices, in the case of configuring multiple channels, such as being equipped with a mid-sweeping channel and a mopping channel, a design of one fan corresponding to one channel is adopted, that is, a fan is configured for each channel to be driven separately. This requires more internal space of the machine and increases costs. Summary of the Invention

[0003] An object of this application is to propose an air duct system of a cleaning device, which can use one fan to provide power to any one of multiple channels, or simultaneously provide power to any two or more of multiple channels, thereby saving the number of fans and reducing costs.

[0004] To solve the above technical problems, this application adopts the following technical solutions:

[0005] A technical solution of one aspect of this application proposes an air duct system of a cleaning device, including: 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 fan, the suction port of the fan is communicated with the air outlet; a first accommodation box, communicated with at least one corresponding air inlet; a second accommodation box, communicated with at least one corresponding air inlet.

[0006] According to some technical solutions of this application, the air damper is configured to be able to move relative to the air duct cavity, and switch 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.

[0007] According to some technical solutions of this application, 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 axially move 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.

[0008] According to some technical solutions of the present application, one end of the guide rod passes through the guide hole and extends into the air duct cavity to be connected with the air damper. The other end of the guide rod is located outside the air duct cavity and is provided with a fixing seat. One end of the guide 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 guide rod to drive the air damper to reset.

[0009] According to some technical solutions of the present application, a guide groove with an opening facing outwards is provided on the air duct cavity. The guide hole is located on the bottom wall of the guide groove and penetrates the bottom wall of the guide groove. The fixing seat and the elastic member are located in the guide groove, and the fixing seat can move along the guide groove and is guidingly adapted to the guide groove.

[0010] 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 damper. 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 limiting ribs are provided on both opposite sides of the air damper, and limiting grooves are provided in the air duct cavity. The limiting ribs are located in the limiting grooves and can slide along the limiting grooves.

[0011] According to some technical solutions of the present application, a sealing glue is nested on the edge of the air inlet. When the air damper is located at the position of shielding the air inlet, the sealing glue abuts against the air damper to seal the gap between the air damper and the air inlet; the air damper is configured to be capable of reciprocating displacement movement along a preset direction to switch between the position of shielding the air inlet and the position of opening the air inlet. Among them, the air inlet and the air damper are both inclined with respect to the preset direction.

[0012] According to some technical solutions of the present application, the first accommodating box and / or the second accommodating box includes an outlet and an inclined surface around the outlet. The air inlet is disposed opposite to the outlet. One end of the sealing glue away from the air damper is inclined and abuts against the inclined surface.

[0013] According to some technical solutions of the present application, the air duct cavity includes a first cover body and a second cover body. More than two of the air inlets are arranged side by side on the side wall of the first cover body. The second cover body is butted below the first cover body. Each of the air dampers 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. An air outlet is provided on the bottom surface of the second cover body; the first accommodation box and the second accommodation box are arranged side by side on the side of the first cover body. The outlet of the first accommodation box is connected to the side surface of one of the air inlets, and the outlet of the second accommodation box is connected to the side surface of another 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 in upper and lower butt joint communication 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 accommodation box and the second accommodation box. The air outlet duct is in upper and lower butt joint communication with the air inlet duct.

[0014] According to some technical solutions of the present application, the air duct system of the cleaning device further includes: a first cleaning component, which is communicated with the first accommodation box and is configured to be able to move up and down. Among them, the air damper of the air inlet correspondingly communicated with the first accommodation box is linked to the first cleaning component, so that the first cleaning component can drive the air damper to control the 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, which is communicated with the second accommodation box and is configured to be able to move up and down. Among them, the air damper of the air inlet correspondingly communicated with the second accommodation box is linked to the second cleaning component, so that the second cleaning component can drive the air damper to control the 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.

[0015] According to some technical solutions of the present application, a push rod for linking the air damper is provided on the first cleaning component and / or the second cleaning component.

[0016] Another technical solution of the present application provides a cleaning device, including the air duct system described in any of the above technical solutions.

[0017] The cleaning device and its air duct system provided by the present application, in the state where the air damper is controlled to be conductive, form a channel from the air inlet of the air duct cavity communicating with the first accommodating box to the air outlet of the air duct cavity, and form another channel from the air inlet of the air duct cavity communicating with the second accommodating box to the air outlet of the air duct cavity. Combining the control of the air damper being conductive and cut off, it is possible to use one fan to provide power to any one of multiple channels, or to provide power to any two or more of multiple channels simultaneously, which can save the number of fans and reduce costs.

[0018] It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present application. Brief Description of the Drawings

[0019] By referring to the accompanying drawings and describing its exemplary embodiments in detail, the above and other objectives, features, and advantages of the present application will become more apparent.

[0020] Figure 1 It is a schematic structural diagram of the air duct system in an embodiment of the present application.

[0021] Figure 2 It is a schematic structural diagram of the air duct system from another perspective in an embodiment of the present application.

[0022] Figure 3 It is an exploded structural diagram of the air duct system in an embodiment of the present application.

[0023] Figure 4 It is a schematic diagram of the exploded structure of the air duct system from another perspective in an embodiment of the present application.

[0024] Figure 5 It is an exploded structural diagram of the air duct cavity in an embodiment of the present application.

[0025] Figure 6 It is a schematic diagram of the exploded structure of the air duct cavity from another perspective in an embodiment of the present application.

[0026] Figure 7 It is a schematic cross-sectional structure diagram of the air duct cavity in the first state in an embodiment of the present application.

[0027] Figure 8 It is a schematic cross-sectional structure diagram of the air duct cavity in the second state in an embodiment of the present application.

[0028] Figure 9 It is a schematic cross-sectional structure diagram of the air duct cavity in the third state in an embodiment of the present application.

[0029] Figure 10 It is a schematic cross-sectional structure diagram of the air duct cavity in the fourth state in an embodiment of the present application.

[0030] Figure 11 It is a schematic side sectional view of the air duct cavity in an embodiment of the present application.

[0031] Figure 12 It is Figure 11 a schematic view of the structure of the air duct cavity in the closed state of the air damper in

[0032] Figure 13 It is another schematic side sectional view of the air duct cavity in an embodiment of the present application.

[0033] Figure 14 It is Figure 13 a schematic view of the structure of the air duct cavity in the closed state of the air damper in

[0034] Figure 15 It is a schematic top view of the air duct system in an embodiment of the present application.

[0035] Figure 16 It is a schematic exploded view of the air duct system in an embodiment of the present application.

[0036] Figure 17 It is a schematic partial sectional view of the air duct system in an embodiment of the present application.

[0037] Figure 18 It is a schematic partial sectional view of the air duct system in an embodiment of the present application.

[0038] Figure 19 It is a schematic sectional view of the fifth state of the air duct system in an embodiment of the present application.

[0039] Figure 20 It is a schematic sectional view of the sixth state of the air duct system in an embodiment of the present application.

[0040] Figure 21 It is a schematic sectional view of the seventh state of the air duct system in an embodiment of the present application.

[0041] Figure 22 It is a schematic sectional view of the eighth state of the air duct system in an embodiment of the present application.

[0042] Figure 23 It is a schematic sectional view of the air duct system in an embodiment of the present application.

[0043] Figure 24 It is a schematic three-dimensional view of the middle sweep component in an embodiment of the present application.

[0044] Figure 25 It is a schematic partial exploded view of the middle sweep component in an embodiment of the present application.

[0045] Figure 26It is a schematic partial sectional structure diagram of the air duct system in an embodiment of the present application.

[0046] The reference numerals are as follows:

[0047] 1. Single-fan dual-channel assembly;

[0048] 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. Fixed seat; 127. Sealing ring; 128. First fastening portion; 129. Limit groove; 13A. First air damper; 13B. Second air damper; 131. Second fastening portion; 132. Limit rib; 14. Concave position; 20. Fan; 21. Air inlet duct; 211. Channel inlet; 212. Channel outlet; 22. Air outlet duct; 30. Dust box; 31. Dust box inlet; 32. Dust box outlet; 33. First inclined surface; 34. Filter screen; 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 sweeping assembly;

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

[0051] 3. Mopping and washing assembly;

[0052] 61. Mopping and washing cavity; 611. Mopping and washing swing shaft; 612. Second dust discharge port; 62. Mopping and washing roller brush; 64. Mopping and washing push rod;

[0053] 4. Bottom shell; 71. Fixed groove. Detailed implementation manners

[0054] Although the present application can be easily embodied in different forms of embodiments, only some specific embodiments are shown in the drawings and will be described in detail in this specification. At the same time, it can be understood that this specification should be regarded as a demonstration of the principle of the present application and is not intended to limit the present application to what is described herein.

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

[0056] In the embodiments shown in the drawings, the indication of directions (such as up, down, left, right, front, back, etc.) is used to explain that the structures and movements of various elements of the present application are not absolute but relative. When these elements are in the positions shown in the drawings, these explanations are appropriate. If the descriptions of the positions of these elements change, then the indication of these directions also changes accordingly.

[0057] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various 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 the present application will be more complete and thorough, and will fully convey the concept of the example embodiments to those skilled in the art. The drawings are only schematic illustrations of the present application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repeated description will be omitted.

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

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

[0060] The air duct system includes a single - fan multi - channel component. Through the single - fan multi - channel component, one fan 20 can provide power to any one of multiple channels, or simultaneously provide power to any multiple of multiple channels. In this way, on the basis of meeting the vacuuming requirements of the cleaning device in different cleaning modes, the number of fans 20 of the cleaning device can be streamlined, the cost can be reduced, and the space volume of the product can also be saved.

[0061] Optionally, the single - fan multi - channel component can be set as the single - fan two - channel component 1 shown in Figure 1 to use one fan 20 to provide power to any one of two channels, or simultaneously provide power to two channels. Of course, the present application is not limited to this. In other embodiments, the single - fan multi - channel component can also be set as a single - fan three - channel component, a single - fan four - channel component, a single - fan five - channel component, etc.

[0062] For example, as Figure 1As shown, 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] Combined Figures 1 to 6 It can be understood that the air duct cavity 10 is provided with an air outlet 121, more than two air inlets (the air inlets can be specifically understood with reference to the first air inlet 111A and / or the second air inlet 111B), and more than two air dampers (the air dampers can be specifically understood with reference to the first air damper 13A and / or the second air damper 13B).

[0064] Each air inlet is correspondingly provided with an air damper to control the conduction and cut-off between the corresponding air inlet and the air outlet 121 through the air damper. The suction port of the fan 20 is communicated with the air outlet 121, the first accommodating box is communicated with one of the air inlets, and the second accommodating box is communicated with the other air inlet.

[0065] More specifically by way of example, the cleaning device is, for example, a cleaning robot integrating sweeping and mopping. It can be understood that the cleaning robot integrating sweeping and mopping has a dust suction mode and a mopping mode. Correspondingly, the cleaning robot integrating sweeping and mopping includes the single-fan dual-channel assembly 1. Through the fan 20 of the single-fan dual-channel assembly 1 and one of the channels (the channel such as the first air inlet 111A - the air outlet 121), power can be provided for the dust suction mode of the cleaning robot. Through the fan 20 of the single-fan dual-channel assembly 1 and the other channel (the channel such as the second air inlet 111B - the air outlet 121), power can be provided for the mopping mode of the cleaning robot.

[0066] It can be understood that when the air outlet 121 of the air duct cavity 10 is communicated with the first air inlet 111A, a channel is correspondingly formed. When the air outlet 121 of the air duct cavity 10 is communicated with the second air inlet 111B, another channel is correspondingly formed. Therefore, it can be correspondingly understood that the number of air inlets corresponds to the number of channels. For example, combined Figure 3 And Figure 4 It can be understood that for the single-fan dual-channel assembly 1, corresponding to the design of the dual channels, the air duct cavity 10 is provided with a first air inlet 111A and a second air inlet 111B. Among them, the suction port of the fan 20 is communicated with the air outlet 121. The first accommodating box is specifically, for example, a dust box 30, and the dust box outlet 32 of the dust box 30 is communicated with the first air inlet 111A. The second accommodating box is specifically, for example, a sewage tank 40, and the sewage tank outlet 42 of the sewage tank 40 is communicated with the second air inlet 111B. A first air damper 13A is correspondingly provided for the first air inlet 111A, and a second air damper 13B is correspondingly provided for the second air inlet 111B.

[0067] By way of example, combined Figure 7 With Figure 17It can be understood that in the dust suction mode, the first air damper 13A can be used to control the conduction between the first air inlet 111A and the air outlet 121, and the second air damper 13B can be used to control the cut-off between the second air inlet 111B and the air outlet 121, so that the fan 20 drives the air flow to suck dust into the dust box 30.

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

[0069] For example, in combination with Figure 8 and Figure 18 It can be understood that in the mopping mode, the first air damper 13A can be used to control the cut-off between the first air inlet 111A and the air outlet 121, and the second air damper 13B can be used to control the conduction between the second air inlet 111B and the air outlet 121, so that the fan 20 drives the air flow to suck dust and / or sewage into the sewage tank 40.

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

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

[0072] For example, as Figure 10 shown, in other modes (such as the shutdown mode, the walking mode, etc.), the first air damper 13A can be used to control the cut-off between the first air inlet 111A and the air outlet 121, and the second air damper 13B can be used to control the cut-off between the second air inlet 111B and the air outlet 121.

[0073] By correspondingly providing a first air damper 13A for the first air inlet 111A and a second air damper 13B for the second air inlet 111B, and separately controlling the conduction and cutoff between the first air inlet 111A / second air inlet 111B and the air outlet 121 by using the first air damper 13A and the second air damper 13B, it is possible to achieve that the same fan 20 provides power for any one channel or provides power for two channels simultaneously. In this way, while realizing the same functions of the traditional dual-fan 20 dual-channel for washing and sweeping, the first accommodating box and the second accommodating box, that is, the dust box 30 and the sewage tank 40, share one fan 20 and one air duct cavity 10, streamlining the number of fans 20 and air ducts, and achieving cost savings and space volume savings.

[0074] Of course, the present application is not limited thereto. In other embodiments, for example, for a single-fan three-channel assembly, corresponding to the three-channel design, 3 air inlets and 3 air dampers corresponding to the 3 air inlets are correspondingly provided on the air duct cavity 10. For a single-fan four-channel assembly, corresponding to the four-channel design, 4 air inlets and 4 air dampers corresponding to the 4 air inlets are correspondingly provided on the air duct cavity 10.

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

[0076] Optionally, the air duct cavity 10 can be set as a long strip-shaped cavity as shown in Figure 3 . 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. 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. Among them, the dust box 30 and the sewage tank 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 tank 40 are arranged side by side along the length direction of the air duct cavity 10. 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. A sewage tank outlet 42 is provided on the side wall of the sewage tank 40, and the sewage tank 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 tank 40, and the air duct cavity 10 are compactly arranged, which is beneficial to saving the space volume of the product.

[0077] Optionally, the first air inlet 111A and / or the second air inlet 111B can be set as shown in Figure 4For the rectangular opening shown, the length direction of the first air inlet 111A and / or the second air inlet 111B is substantially the same as the length direction of the air duct cavity 10. In this way, the shape of the air duct cavity 10 is fully utilized to achieve a larger area of the first air inlet 111A and / or the second air inlet 111B, which is beneficial to improving the driving efficiency and saving the space volume of the product. Of course, the present application is not limited thereto. In other embodiments, the shape of the first air inlet 111A and / or the second air inlet 111B can also be set to be circular, oval, square, etc.

[0078] Optionally, the blower 20 is closely arranged on 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 among the air duct cavity 10, the blower 20, the sewage tank 40 and the dust box 30, and further save the space volume of the product.

[0079] The air outlet 121 is arranged 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. On the side wall of the air duct cavity 10 facing away from the dust box 30 and the sewage tank 40, a concave position 14 is arranged at the position corresponding to the air outlet 121, and a part of the blower 20 is embedded in the concave position 14 to further save the space volume of the product.

[0080] To realize the connection between the blower 20 and the air outlet 121 at the bottom of the air duct cavity 10, an air inlet duct 21 is provided for the blower 20. The top of the air inlet duct 21 is provided with a channel inlet 211 and a channel outlet 212 at intervals. 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 up and down to achieve communication. The air inlet duct 21 is located below the blower 20, and the air suction port of the blower 20 is connected to the channel outlet 212 up and down to achieve communication. Optionally, the blower 20 is also provided with an air outlet duct 22 for exhausting air.

[0081] Optionally, the blower 20 is a centrifugal blower, so as to have a greater air pressure and driving force to better meet the driving requirements of two or more channels.

[0082] Hereinafter, taking the first air damper 13A and the first air inlet 111A as examples, the cooperation between the first air damper 13A and the first air inlet 111A, the movement of the first air damper 13A, and the connection between the first air damper 13A and the air duct cavity 10 will be further illustrated by examples. It can be understood that the second air damper 13B and the cooperation between the second air damper 13B and the second air inlet 111B can be understood by referring to the illustration of the first air damper 13A and the first air inlet 111A.

[0083] For example, the first air damper 13A is configured to be movable relative to the air duct cavity 10, and by moving relative to the air duct cavity 10, it can switch between a position where the first air inlet 111A is shielded and a position where the first air inlet 111A is opened. Wherein, when the first air damper 13A is located at the position where the first air inlet 111A is shielded, the first air inlet 111A is cut off from the air outlet 121, and when the first air damper 13A is located at the position where the first air inlet 111A is opened, the first air inlet 111A is communicated with the air outlet 121.

[0084] Combined with Figures 7 to 10 It can be understood that the first air damper 13A is configured to be reciprocally displaceable along a preset direction to switch between a position where the first air inlet 111A is shielded and a position where the first air inlet 111A is opened.

[0085] Of course, the present application is not limited thereto. In other embodiments, the air damper can also be configured to be rotatable relative to the air duct cavity 10, and by rotating, it can switch between a position where the air inlet is shielded and a position where the air inlet is opened.

[0086] Optionally, the preset direction can be configured as, for example, the lifting direction. In other words, it can be configured as, for example, the up and down direction. Of course, the present application is not limited thereto. In other embodiments, the preset direction can also be configured as the left and right direction, etc.

[0087] Optionally, guiding holes 122 corresponding to each air damper are provided on the air duct cavity 10, and guiding rods 123 are inserted into the guiding holes 122. The guiding rods 123 can move axially along the guiding holes 122. The first air damper 13A is arranged on the guiding rods 123 and moves synchronously with the guiding rods 123 to switch between a position where the first air inlet 111A is shielded and a position where the first air inlet 111A is opened. In this way, the guiding rods 123 and the guiding holes 122 are in guiding cooperation, which can play a guiding role in the displacement movement of the first air damper 13A, so that the first air damper 13A will not shake randomly during the displacement movement, and can better ensure the matching accuracy between the first air damper 13A and the first air inlet 111A, so as to correspondingly ensure the sealing effect of the first air inlet 111A.

[0088] Optionally, the guiding rod 123 is a metal rod, which has a more reliable and accurate guiding effect on the first air damper 13A, and is also beneficial to improving the wind pressure bearing capacity of the first air damper 13A in the state of shielding the first air inlet 111A, thereby improving the sealing reliability of the first air damper 13A.

[0089] Further optionally, the guiding 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 is connected to the first air damper 13A. The other end of the guide rod 123 is located outside the air duct cavity 10 and is provided with a fixing seat 126. The end of the guide rod 123 provided with the fixing seat 126 can be pressed to drive the first air damper 13A to move. An elastic member 125 is abutted between the fixing 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 drive the first air damper 13A to reset. In this way, the first air damper 13A can be correspondingly controlled to open or shield the first air inlet 111A by driving the guide rod 123. When the guide rod 123 stops being pressed, the first air damper 13A can be automatically reset under the drive of the elastic member 125 to automatically shield or open the first air inlet 111A. It has the advantages of simple structure, convenient driving, and high response accuracy for driving the first air damper 13A.

[0091] Further, a guide groove 124 with an opening facing outwards is provided on the air duct cavity 10. The guide hole 122 is located on the bottom wall of the guide groove 124 and penetrates the bottom wall of the guide groove 124. The fixing seat 126 and the elastic member 125 are located in the guide groove 124. The fixing seat 126 can move along the guide groove 124 and is in guiding fit with the guide groove 124. By the guiding fit between the fixing seat 126 and the guide groove 124, a larger axial displacement stroke can be provided for the guide rod 123, and at the same time, a more precise coaxiality of the fit between the guide rod 123 and the guide hole 122 can be ensured, so that the guide rod 123 will not deflect randomly, thereby correspondingly improving the smoothness of the movement of the first air damper 13A, and making the first air damper 13A not easy to deflect or shake during the displacement movement.

[0092] Optionally, the guide groove 124 can be set as Figure 4 shown as a rectangular groove, and correspondingly, the fixing seat 126 is set 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 connection end of the guide rod 123 and the first air damper 13A and the guide groove 124. It can be used to seal the gap between the guide rod 123 and the guide hole 122, reduce the air leakage of the air duct cavity 10, and when the guide rod 123 resets based on the elastic force of the elastic member 125, a buffer is provided between the connection end of the guide rod 123 and the first air damper 13A and the guide groove 124 through the sealing ring 127, which can also play a role in noise and vibration reduction.

[0094] Optionally, a sealing glue 112 is nested at the edge of the first air inlet 111A. When the first air damper 13A is in the position of shielding the first air inlet 111A, the sealing glue 112 abuts against the first air damper 13A to seal the gap between the first air damper 13A and the first air inlet 111A. In this way, the sealing effect of the first air damper 13A on the first air inlet 111A can be further improved.

[0095] Further, both the first air inlet 111A and the first air damper 13A are inclined with respect to the aforementioned preset direction.

[0096] Specifically, for example, the preset direction can be roughly understood as the OB direction shown in Figure 11 , the setting direction of the first air damper 13A is, for example, the OA direction, OB and OA are set at an angle, that is, the value of ∠AOB is greater than 0°, the setting direction of the first air inlet 111A is the X1-X2 direction, and the X1-X2 direction is roughly parallel to the OA direction, and thus is also inclined with respect to the OB direction. In this way, from the state shown in the appendix Figure 11 , when the first air damper 13A approaches the first air inlet 111A along the OB direction until it is switched to the state shown in Figure 12 , during this process, the first air damper 13A roughly obliquely approaches the sealant 112 at the first air inlet 111A, so that the first air 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 air damper 13A, the side shear force of the first air damper 13A on the sealant 112 can be reduced, and the friction between the first air damper 13A and the sealant 112 is reduced, thereby better extending the service life of the sealant 112.

[0097] Correspondingly, the dust box 30 includes a first inclined surface 33. The first inclined surface 33 is located around the dust box outlet 32. The first air damper 13A is disposed opposite to the dust box outlet 32. One end of the sealant 112 away from the first air damper 13A is inclined and abuts against the first inclined surface 33.

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

[0099] As shown in Figure 5 , in order to make the displacement movement of the first air damper 13A smoother, limiting ribs 132 are provided on both opposite sides of the first air damper 13A. Among them, limiting grooves 129 are provided on the air duct cavity 10 corresponding to each of the limiting ribs 132. The limiting grooves 129 can be set as the C-shaped grooves 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 damper 13A, the limiting ribs 132 slide along the limiting grooves 129, thereby limiting the position of the first air damper 13A, making it not easy for the first air damper 13A to shake randomly and improving the smoothness.

[0100] In order to achieve stability and sealing strength of the first damper 13A at the position of shielding the first air inlet 111A, a first buckling portion 128 is provided on the air duct cavity 10, and a second buckling portion 131 is provided on the first damper 13A. When the first damper 13A moves to a position that completely shields the first air inlet 111A, the first buckling portion 128 and the second buckling portion 131 are buckled to lock the first damper 13A and the air duct cavity 10 together (such as Figure 14 As shown in FIG. 1 ). In this way, the first damper 13A can better resist wind pressure and is not prone to shaking or air leakage under wind pressure. When the first damper 13A moves from a position blocking the first air inlet 111A to a position opening the first air inlet 111A, the first buckle 128 and the second buckle 131 are unlocked (as shown in FIG. 1 ). Figure 13 shown).

[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 facilitated to be stable, so that when the fan 20 is running in a 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 at the lower side of the first cover 11, and the first cover 11 and the second cover 12 can be sealed and fixed by using a dispensing process to enclose and form 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., so as to realize the 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, and a fixing seat 126 and an elastic member 125 are located in the guide groove 124. This structure can realize the rapid installation between the first air door 13A and the air duct cavity 10, which is beneficial to the mass production of products.

[0103] The first receiving box and the second receiving box are arranged side by side on the side of the first cover 11. The outlet of the first receiving box is connected to the side of the first air inlet 111A, and the outlet of the second receiving 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 an up-and-down docking manner. The air outlet duct 22 is located on the side of the first cover 11 and the second cover 12 away from the first receiving box and the second receiving box. The air outlet duct 22 is connected to the air inlet duct 21 in an up-and-down docking manner. This structure realizes a compact layout of the air flow system of the cleaning device, saving more product space volume.

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

[0105] The air duct system includes a fan 20, an air duct cavity 10, a first receiving box, and a second receiving box. Without conflict, the fan 20, the air duct cavity 10, the first receiving box, and the second receiving box can be understood with reference to the examples in the above Embodiment 1 and will not be repeated here.

[0106] In this embodiment, the air duct system further includes a bottom shell 4, a first cleaning component and a second cleaning component provided on the bottom shell 4. The fan 20, the air duct cavity 10, the first receiving box, and the second receiving box are arranged above the bottom shell 4. Please refer to Figure 15 , Figure 15 for the arrangement relationship of the fan 20, the air duct cavity 10, the first receiving box, and the second receiving box on the bottom shell 4 shown therein. As Figure 16 shown, the first cleaning component and the second cleaning component are arranged below the bottom shell 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 mopping and washing 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 mopping and washing 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 sweeping component 2 and the mopping and washing component 3 are configured to be able to independently rise and lower relative to the bottom shell 4.

[0110] It can be understood that the middle sweeping component 2 is used for cleaning the ground. When the middle sweeping component 2 descends, the middle sweeping component 2 can contact the ground to perform the cleaning and dust suction work on the ground. Among them, as Figure 17As shown, since the middle sweep assembly 2 is connected to the dust box 30, the dust box 30 can suck the dust swept from the ground by the middle sweep assembly 2 into the dust box 30 through the negative pressure generated by the fan 20. When the middle sweep assembly 2 rises, the middle sweep assembly 2 can be separated from the ground to avoid secondary pollution to the ground.

[0111] It can be understood that the washing and mopping assembly 3 is used to wash and mop the ground. When the washing and mopping assembly 3 is lowered, the washing and mopping assembly 3 can contact the ground to perform washing, mopping and vacuuming work on the ground. Figure 18 As shown, 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 cleaned from the ground by the washing and mopping assembly 3 into the sewage tank 40. When the washing and mopping assembly 3 rises, the washing and mopping assembly 3 can be separated from the ground to avoid secondary pollution to the ground.

[0112] The first damper 13A is linked to the middle sweep assembly 2, so that the middle sweep assembly 2 can drive the first damper 13A to control the cutoff between the corresponding first air inlet 111A and the air outlet 121 by rising, and when the middle sweep assembly 2 descends, the first damper 13A can control the conduction between the corresponding first air inlet 111A and the air outlet 121. In this way, when the middle sweep assembly 2 descends, the first damper 13A opens the air outlet 121 accordingly, so that the fan 20 can smoothly suck the swept dust into the dust box 30. When the middle sweep assembly 2 rises, the first damper 13A covers the first air inlet 111A accordingly to reduce wind pressure loss.

[0113] The following will be combined Figure 23 , Figure 24 , Figure 25 , Figure 26 , taking the middle sweep assembly 2 as an example, the structures involved in the lifting and lowering movement of the middle sweep assembly 2 are illustrated.

[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 disposed at one end of the middle sweep cavity 51 , and a middle sweep top rod 54 disposed on the middle sweep cavity 51 .

[0115] The middle sweep cavity 51 is provided with a middle sweep swing shaft 511, and the number of the middle sweep swing shaft 511 can be as follows: Figure 24 As shown, 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 also 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 crankshaft 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 drivingly 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 the one-way bearing 536. One end of the rocker 537 is eccentrically connected to the crank 539, and a roller 538 is provided at the other end of the rocker 537. The roller 538 is embedded in the fixing groove 71 of the bottom case 4. When the crank 539 rotates driven by the motor 531, it drives the rocker 537 to swing, and the rocker 537 drives the middle sweep cavity 51 to swing up and down relative to the bottom case 4 around the middle sweep swing shaft 511 through the swing.

[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 brush 52 is drivingly connected to the middle sweep shaft.

[0120] Among them, when the motor shaft of the motor 531 rotates in the first direction, through the transmission path of the motor 531 - the first synchronous belt 532 - the one-way bearing 536 - the crank 539 - the rocker 537, the rocker 537 is driven to swing, so as to drive the whole middle sweep assembly 2 to swing relative to the bottom case 4 based on the middle sweep swing shaft 511 through the swing of the rocker 537, thereby realizing the rise or fall 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 driven by the motor 531. Therefore, the middle sweep assembly 2 will not rise or fall driven by the motor 531. At this time, through the transmission path of the motor 531 - the first synchronous belt 532 - the second synchronous belt 533 - the middle sweep shaft - the middle sweep brush 52, the middle sweep brush 52 is driven to rotate to clean the ground.

[0122] Among them, a middle sweep top rod 54 is provided on the middle sweep cavity 51, and the middle sweep top rod 54 is provided corresponding to the fixing seat 126 in the bottom guide groove 124 of the air duct cavity 10. When the middle sweep assembly 2 rises, the middle sweep top rod 54 rises accordingly and pushes up the fixing seat 126 connected to the air door through the guide rod 123, so that the air door is correspondingly shielded from the first air inlet 111A driven by the fixing seat 126. When the middle sweep assembly 2 descends, the middle sweep top rod 54 releases the fixing seat 126. At this time, the guide rod 123 descends driven by the elastic member 125, so that the air door descends correspondingly to open the first air inlet 111A.

[0123] It can be understood that the mopping and washing assembly 3 has a lifting function similar to that of the middle sweeping assembly 2. Without conflict, the mopping and washing assembly 3 can also correspondingly have a mopping and washing cavity 61 (i.e., the cavity part), a mopping and washing roller brush 62 (i.e., the cleaning unit) accommodated in the mopping and washing cavity 61, a mopping and washing lifting mechanism provided at one end of the mopping and washing cavity 61, a mopping and washing ejector rod 64 provided on the mopping and washing cavity 61, a mopping and washing swing shaft 611 (i.e., the swing shaft), a second dust exhaust port 612 and other structural features. The connection relationship, position, etc. of these structural features can be adaptively understood with reference to the relevant description of the middle sweeping assembly 2, and will not be repeated here.

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

[0125] In the air duct system of this embodiment, both the first cleaning assembly and the second cleaning assembly have a lifting function. Through the ejector rods of the two cleaning assemblies, that is, the middle sweeping ejector rod 54 and the mopping and washing ejector rod 64, they correspondingly contact the guide rods 123 of the first air door 13A corresponding to the first air inlet 111A of the air duct cavity 10 and the guide rods 123 of the second air door 13B corresponding to the second air inlet 111B, so as to realize the linkage function that the first air door 13A and / or the second air door 13B automatically opens as the first cleaning assembly and / or the second cleaning assembly rises, and has the advantages of simple structure and high response accuracy. When the guide rods 123 of the first air door 13A corresponding to the first air inlet 111A and the guide rods 123 of the second air door 13B corresponding to the second air inlet 111B are not pressed by the corresponding middle sweeping ejector rod 54 and mopping and washing ejector rod 64, the guide rods 123 of the first air door 13A corresponding to the first air inlet 111A and the guide rods 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 rods 123 descend, and the first air door 13A and / or the second air door 13B automatically opens.

[0126] For the single mopping and washing mode, as Figure 19 shown, at this time, the middle sweeping assembly 2 is in a raised state. Correspondingly, the guide rod 123 of the first air door 13A is lifted by the middle sweeping ejector 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 mopping and washing assembly 3 is in a lowered state, the mopping and washing assembly 3 contacts the ground H, the mopping and washing ejector rod 64 does not lift the guide rod 123 of the second air door 13B, and 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 floor sweeping mode, as Figure 20As shown, at this time, 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 up by the washing and mopping top rod 64, and the second air inlet 111B is shielded 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 up the guide rod 123 of the first air door 13A, and the first air door 13A is driven by the corresponding elastic member 125 to descend and reset, and the first air inlet 111A is opened, that is, the dust box outlet 32 ​​is opened.

[0128] There are two other modes, such as Figure 21 As shown, when the washing and mopping assembly 3 and the middle sweeping assembly 2 are both put down, the first air inlet 111A and the second air inlet 111B are both opened, which is the sweeping and washing integrated mode, such as sweeping in the front and washing in the back. Figure 22 As shown, when the washing and mopping component 3 and the middle sweeping component 2 are both lifted up, the first air inlet 111A and the second air inlet 111B are both closed, which means that the cleaning working mode is not performed. For example, when the cleaning work is completed and the user is returning to the base station, in order to avoid secondary contamination of the ground or to overcome obstacles, the cleaning working mode can be avoided and the middle sweeping component 2 and the washing and mopping component 3 can be lifted up.

[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 and lowering 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 a 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 typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present application can be implemented in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above-mentioned embodiments are not limited to any of the foregoing details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached 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 fan, the suction port of the fan being communicated with the air outlet; A first accommodation box, communicated with at least one of the corresponding air inlets; A second accommodation 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 located at the position where the air inlet is shielded, the air inlet and the air outlet are cut off, and when the air damper is located at 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 guide hole and a guide rod passing through the guide hole for each of the air dampers. The guide rod can move axially along the guide hole, and the air damper is arranged on the guide rod and moves synchronously with the guide 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 guide rod passes through the guide hole to extend into the air duct cavity and is connected to the air damper. The other end of the guide rod is located outside the air duct cavity and is provided with a fixing seat. One end of the guide 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 guide 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 guide groove opening outward. The guide hole is located on the bottom wall of the guide groove and penetrates the bottom wall of the guide groove. The fixing seat and the elastic member are located in the guide groove, and the fixing seat can move along the guide groove and is guided and adapted to the guide 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 where the air inlet is blocked, 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 where the air inlet is blocked to the position where the air inlet is opened, 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 a position to shield 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 in 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 accommodating box and / or the second accommodating 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 below 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. An air outlet is provided on the bottom surface of the second cover body. The first accommodating box and the second accommodating box are arranged side by side on the side of the first cover body. The outlet of the first accommodating box is connected to the side of one air inlet, and the outlet of the second accommodating 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 accommodating box and the second accommodating 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 is: A first cleaning component, which is communicated with the first accommodating box. The first cleaning component is configured to be capable of lifting movement. Wherein, the air damper of the air inlet corresponding to the first accommodating box is linked to the first cleaning component, so that the first cleaning component can drive the air damper to cut off the connection between the corresponding air inlet and the air outlet by rising. When the first cleaning component descends, the air damper can control the connection between the corresponding air inlet and the air outlet to be conducted. A second cleaning component, which is communicated with the second accommodating box. The second cleaning component is configured to be capable of lifting movement. Wherein, the air damper of the air inlet corresponding to the second accommodating box is linked to the second cleaning component, so that the second cleaning component can drive the air damper to cut off the connection between the corresponding air inlet and the air outlet by rising. When the second cleaning component descends, the air damper can control the connection between the corresponding air inlet and the air outlet to be conducted.

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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