Cleaning device

Abstract

The utility model discloses a cleaning device which comprises a shell, a motor, a filter, a gulp valve, a shielding part, a self-cleaning valve and a driving mechanism. The shell is provided with an air supply port, a filtering port and a self-cleaning port; the driving mechanism synchronously drives the gulp valve, the shielding part and the self-cleaning valve to move in the same direction, and switching between the dust suction state and the self-cleaning state is achieved. In a dust suction state, the gulp valve and the self-cleaning valve are closed, the shielding part opens the filtering opening, and dust-containing airflow sequentially flows through the filter, the filtering opening and the gas supplementing channel to enter the motor; in the self-cleaning state, the gulp valve and the self-cleaning valve are opened, the shielding part closes the filtering opening, and external air enters the motor through the gas supplementing channel to form reverse airflow which impacts the surface of the filter through the self-cleaning opening. Multiple valves are linked in a single direction and share an air supply channel to reduce the size of an air channel, and meanwhile a complex transmission structure is omitted. The self-cleaning dust collector is compact in structure and low in cost, the dust collection efficiency and the self-cleaning concentration ratio are remarkably improved, and the problems that a traditional self-cleaning dust collector is bloated in structure and poor in switching stability are solved.

Description

Technical Field

[0001] This utility model relates to the field of vacuum cleaner technology, and in particular to a cleaning device. Background Technology

[0002] Existing canister vacuum cleaners require complex structures to automatically clean their filters. This involves coordinating the opening and closing of valves at different openings under various conditions, often necessitating multiple drive units and increasing equipment costs. Reducing the number of drive units, allowing multiple valves to operate in conjunction with fewer units, requires complex transmission mechanisms, such as multi-link structures. This results in a bulky overall mechanical structure, difficult installation and debugging, increased manufacturing costs, and a higher risk of malfunction.

[0003] Furthermore, canister vacuum cleaners with added cleaning functions often have more parts and require more complex air ducts to achieve reverse airflow over the filter during self-cleaning. This results in a larger overall size, hindering compact design and cost control. Consequently, higher drive costs, more complex transmissions, and larger dimensions severely impact the market competitiveness of canister vacuum cleaners with cleaning functions. Summary of the Invention

[0004] To address the problems of bulky structure, high cost, and difficult debugging caused by multiple drive units and complex transmission structures in existing self-cleaning canister vacuum cleaners, the purpose of this invention is to provide a cleaning device that, while possessing self-cleaning functionality, features a simplified structure, reduced size, lower cost, and improved work efficiency and stability. 。

[0005] To achieve the above-mentioned utility model objectives, one embodiment of the present utility model provides a cleaning device, which has a dust-collecting state and a self-cleaning state, and the cleaning device includes:

[0006] The housing is equipped with an air inlet, a filter inlet, and a self-cleaning inlet.

[0007] An electric motor is used to drive airflow. The motor has an air inlet and an air outlet, and an air supply channel is formed between the air supply port and the air inlet.

[0008] A filter is used to filter out contaminants from an airflow.

[0009] The air supply valve is used to open or close the air supply port;

[0010] A shielding part is used to open or close the filter port;

[0011] A self-cleaning valve, wherein the self-cleaning valve is used to open or close the self-cleaning port;

[0012] The cleaning device also includes a drive mechanism, which simultaneously drives the shielding part, the air supply valve and the self-cleaning valve to move in the same direction, so that the cleaning device switches between dust collection state and self-cleaning state.

[0013] In the dust-collecting state, the air supply valve is driven to close the air supply port, the self-cleaning valve is driven to close the self-cleaning port, the shielding part is driven to open the filter port, and the filter, the filter port, the air supply channel, and the motor air inlet are connected in sequence.

[0014] In the self-cleaning state, the air supply valve is driven to open the air supply port, the self-cleaning valve is driven to open the self-cleaning port, the shielding part is driven to close the filter port, the motor air inlet is connected to the outside through the air supply channel, and the motor air outlet, the self-cleaning port, and the filter are connected in sequence.

[0015] As a further improvement of this utility model, the plane where the air inlet is located and the plane where the filter is located are both parallel to the first plane, and the direction of movement of the shielding part and the air inlet valve is perpendicular to the first plane.

[0016] As a further improvement of this utility model, the direction of movement of the shielding part and the air supply valve is perpendicular to the arrangement direction of the motor to the filter.

[0017] As a further improvement of this utility model, the driving mechanism includes a driving component and a guide rod, the self-cleaning valve and the air supply valve are fixedly connected to the guide rod, and the shielding part is fixedly connected to any one of the following: the air supply valve, the self-cleaning valve and the guide rod.

[0018] As a further improvement of this utility model, the air replenishment valve includes a first valve and a second valve, and the air replenishment port includes a first port and a second port. The first valve is used to open or close the first port, and the second valve is used to open or close the second port. The second valve is fixedly connected to the shielding part, and the guide rod passes through the first port and the second port, forming a gap with both the first port and the second port.

[0019] As a further improvement of this utility model, the driving member drives the guide rod to reciprocate between a first position and a second position, wherein the first position is located in front of the second position;

[0020] At the first position, the first valve closes the first port in front of the first port, the second valve closes the second port in front of the second port, and the shielding part opens the filter port;

[0021] In the second position, the first valve opens the first port, the second valve opens the second port, and the shielding part closes the filter port from the rear side.

[0022] As a further improvement of this utility model, the shielding part includes a driving end, a step part and a baffle connected in sequence. The shielding part is fixedly connected to the second valve through the driving end, and a sealing ring is provided on the side of the baffle facing the step part.

[0023] At the first position, the stepped portion is adjacent to the outer edge of the filter port and forms an airflow gap with the outer wall of the filter port to prevent the blocking portion from blocking the filter port;

[0024] In the second position, the baffle abuts against the sealing ring between the rear side of the filter port and the inner wall of the filter port.

[0025] As a further improvement of this utility model, the cleaning device also includes a filter cover, a lower cover of the head unit, and a tray. The lower cover of the head unit is provided with an air supply hole. The air supply channel includes a first air duct and a second air duct. The first air duct is located between the motor air inlet and the air supply hole, and the second air duct is located between the air supply hole and the air supply port. The lower cover of the head unit and the tray enclose the first air duct.

[0026] The filter port is provided on the side wall of the filter cover, and the filter port, the second air duct, the air supply hole, the first air duct, and the motor air inlet are connected in sequence.

[0027] As a further improvement of this utility model, the shielding part includes a baffle plate, which is disposed on the side of the filter port away from the second air duct. When the shielding part is driven to switch from opening the filter port to closing the filter port, the baffle plate is driven to move towards the direction of the second air duct until the filter port is closed.

[0028] As a further improvement of this utility model, an exhaust port is also provided inside the housing, and the self-cleaning valve is also used to open or close the exhaust port;

[0029] In the dust-collecting state, the self-cleaning valve is driven to open the exhaust port while closing the self-cleaning port, and the motor air outlet is connected to the outside through the exhaust port;

[0030] In the self-cleaning state, the self-cleaning valve is driven to close the exhaust port while opening the self-cleaning port.

[0031] Compared with commonly used technologies, this utility model has the following advantages: the valves of each air passage can be operated in conjunction with each other in the same direction of movement. That is, by simply driving the shielding part and the air supply valve to move in the same direction at the same time, the airflow path can be changed quickly and reliably in different states. Therefore, this cleaning device not only greatly reduces the structural difficulty and manufacturing cost required for the self-cleaning function, but also greatly reduces the size of the device due to the replanning of the airflow path. Correspondingly, the cleaning device has a lower cost and higher working efficiency and stability in the self-cleaning and dust collection process. Attached Figure Description

[0032] Figure 1 This is a cross-sectional view of a cleaning device according to an embodiment of the present invention;

[0033] Figure 2 This is a bottom view of the assembly of the machine head lower cover and the tray according to an embodiment of the present invention;

[0034] Figure 3 This is a cross-sectional view of the cleaning device in the dust-collecting state of an embodiment of the present invention at the position of the drive mechanism;

[0035] Figure 4 This is a cross-sectional view of the cleaning device in the self-cleaning state at the position of the drive mechanism according to an embodiment of the present invention;

[0036] Figure 5 This is a top sectional view of a cleaning device in a dust-collecting state according to an embodiment of the present invention;

[0037] Figure 6 This is a top sectional view of a cleaning device in a self-cleaning state according to an embodiment of the present invention;

[0038] Figure 7 This is a schematic diagram of the filter cover and drive mechanism according to an embodiment of the present invention;

[0039] Figure 8 This is a cross-sectional view of the filter cover and drive mechanism in the dust-collecting state according to an embodiment of the present invention;

[0040] Figure 9 This is a cross-sectional view of the filter cover and drive mechanism in a self-cleaning state according to an embodiment of the present invention;

[0041] Figure 10 This is a schematic diagram of the structure of a filter cover according to an embodiment of the present invention;

[0042] Figure 11 This is a schematic diagram of the structure of the shielding part according to an embodiment of the present invention;

[0043] Among them, 100 is the cleaning device; 10 is the motor; 11 is the motor air inlet; 12 is the motor air outlet; 20 is the housing; 21 is the air supply channel; 211 is the first air duct; 212 is the second air duct; 23 is the air supply port; 24 is the self-cleaning port; 25 is the exhaust port; 26 is the exhaust flow channel; 30 is the filter cover; 31 is the filter port; 32 is the spray hole; 40 is the filter; 50 is the drive mechanism; 51 is the drive component; 52 is the guide rod; 53 is the air supply valve; 531 is the first valve; 532 is the second valve; 54 is the shielding part; 541 is the baffle; 542 is the drive end; 543 is the connecting part; 544 is the step part; 55 is the self-cleaning valve; 60 is the lower cover of the machine head; 61 is the air supply hole; and 70 is the tray. Detailed Implementation

[0044] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0045] It should be understood that terms such as “above,” “over,” “below,” and “under” used herein to indicate spatial relative position are for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms “spatial relative position” may be intended to include different orientations of the equipment in use or operation other than those shown in the figures.

[0046] One embodiment of this utility model provides a cleaning device that, while having a self-cleaning function, features a simplified structure, reduced size, lower cost, and improved working efficiency and stability.

[0047] This utility model provides a cleaning device 100, which has a dust-collecting state and a self-cleaning state. It can simultaneously control the opening and closing of multiple valves through a single drive mechanism 50, thereby realizing the switching between dust collection and self-cleaning functions.

[0048] like Figure 1 , 3 As shown, the cleaning device 100 includes a housing 20, a motor 10, a filter 40, an air supply valve 53, a shielding part 54, a self-cleaning valve 55, and a drive mechanism 50.

[0049] The housing 20 is provided with an air inlet 23, a filter port 31 and a self-cleaning port 24. The motor 10 drives the airflow through the motor air inlet 11 and the motor air outlet 12. The filter 40 is used to filter the dirt in the airflow. An air inlet channel 21 is formed between the air inlet 23 and the motor air inlet 11.

[0050] The air supply valve 53, the shielding part 54, and the self-cleaning valve 55 are used to control the opening and closing of the air supply port 23, the filter port 31, and the self-cleaning port 24, respectively. The drive mechanism 50 synchronously drives the shielding part 54, the air supply valve 53, and the self-cleaning valve 55 to move in the same direction, thereby realizing the switching of the cleaning device 100 between the dust suction state and the self-cleaning state.

[0051] To clearly express the position and direction described in this embodiment, parameters are defined in this embodiment. Figures 1-6 The directions of up, down, front, back, left, and right are defined, with the up and down direction referring to the direction of gravity. The cleaning device 100 is placed on a horizontal ground, with the motor 10 located to the left of the filter 40 and the opposite direction to the right. The two sides perpendicular to the plane containing the up, down, left, and right are the front and rear sides, respectively.

[0052] In existing technology, the filter port 31 of the filter 40 is usually located in the middle between the filter 40 and the motor 10 (i.e., on the left side of the filter 40), which requires the baffle 541 to move left and right to control the opening and closing of the air outlet. The air inlet 23 is usually located on the front or rear side of the filter 40, and the self-cleaning valve 55 and the air inlet valve 53 move in the front-back direction. Since the three movements are not in the same direction, if they need to be linked, complex transmission mechanisms such as multi-linkage, gear sets, or separate drive units must be set up. This not only increases the number of parts and assembly complexity, but may also lead to bulky mechanisms, increased costs, and potential failure risks (such as linkage jamming and transmission errors).

[0053] This embodiment, by rearranging the position of the filter port 31 and optimizing the drive path, unifies the movement directions of the shielding part 54, the air supply valve 53, and the self-cleaning valve 55 to the same direction, such as... Figure 3 , 4 As shown in Figures 5, 6, 8, and 9. The filter port 31 and the air supply port 23 are located on the same side of the filter 40 (i.e., the front side of the filter 40). This design allows the air supply valve 53, the shielding part 54, and the self-cleaning valve 55 to open and close synchronously along a single linear motion without needing to change their movement direction via a multi-link linkage, significantly reducing the number of parts. Figure 3-9 The direct connection between the central shielding part 54 and the air supply valve 53 simplifies the drive mechanism 50, reducing material costs and processing difficulty. It also reduces assembly steps and avoids the asynchronous movement caused by wear or assembly errors in multi-link mechanisms. Linear drive eliminates indirect force transmission in the transmission chain, reduces the risk of jamming, and improves the consistency of movement.

[0054] In dust-collecting state, such as Figure 3 , 5As shown in Figure 8, the air supply valve 53 completely closes the air supply port 23, the self-cleaning valve 55 closes the self-cleaning port 24, and the shielding part 54 opens the filter port 31. The dust-laden airflow flows sequentially through the filter 40, the filter port 31, and the air supply channel 21, and is finally drawn into the motor 10 through the motor air inlet 11 and discharged from the motor air outlet 12. In this state, the air supply channel 21 is blocked from the infiltration of outside air due to the closure of the air supply valve 53, thus preventing the suction power from weakening.

[0055] When switching to self-cleaning mode, such as Figure 4 , 6 As shown in Figure 9, the drive mechanism 50 drives the air supply valve 53 to open the air supply port 23, the self-cleaning valve 55 to open the self-cleaning port 24, and the shielding part 54 completely closes the filter port 31. Outside air enters the air supply channel 21 through the air supply port 23, is drawn in through the motor air inlet 11, and is discharged from the motor air outlet 12 to the self-cleaning port 24, forming a reverse airflow. This reverse airflow is blown in from the self-cleaning port 24 and acts directly on the surface of the filter 40, impacting the attached dirt with relatively high pressure and stripping off the attached dust particles. During this process, the filter port 31 is tightly sealed by the shielding part 54 to prevent the reverse airflow from diverting to the dust collection path, thereby ensuring the concentration and efficiency of the self-cleaning airflow.

[0056] Furthermore, the plane where the air inlet 23 is located and the plane where the filter port 31 is located are both parallel to the first plane, and the direction of movement of the shielding part 54 and the air inlet valve 53 is perpendicular to the first plane.

[0057] like Figure 3 , 4 As shown, in this embodiment, the opening planes of the air supply port 23 and the filter port 31 are perpendicular to the horizontal plane (i.e., the first plane). The guide rod 52 of the drive mechanism 50 moves linearly in a direction parallel to the horizontal plane (i.e., the front-to-back direction), driving the air supply valve 53 and the shielding part 54 to move synchronously.

[0058] This layout design ensures that the air supply valve 53 and the shielding part 54 move in the same direction, and both control the opening and closing of the air supply port 23 and the filter port 31 by opening and closing vertically. This provides good sealing performance and avoids the problem of needing an additional transmission mechanism due to inconsistent movement directions in traditional designs.

[0059] The direction of movement of the shielding part 54 and the air supply valve 53 is perpendicular to the arrangement direction from the motor 10 to the filter 40. In other words, the direction of movement of the shielding part 54 and the air supply valve 53 is both along the front-to-back direction. Figures 3-6 As shown, this makes the linear movement path of the shielding part 54 and the air supply valve 53 highly compatible with the air duct layout, reducing the space occupied inside the equipment.

[0060] Furthermore, the drive mechanism 50 includes a drive member 51 and a guide rod 52. The guide rod 52 moves linearly in the front-back direction. The self-cleaning valve 55 and the air supply valve 53 are fixedly connected to the guide rod 52. The shielding part 54 is fixedly connected to any one of the following: the air supply valve 53, the self-cleaning valve 55, and the guide rod 52. This embodiment... Figures 3-9 The diagram shows that the shielding part 54 is fixedly connected to the air supply valve 53. In addition, since the air supply valve 53, the self-cleaning valve 55 and the guide rod 52 move synchronously, the shielding part 54 can also be connected to other mechanisms.

[0061] In this embodiment, the self-cleaning valve 55 and the air supply valve 53 are fixed to the middle of the guide rod 52 by screws, such as Figure 7 , Figure 11 As shown, the shielding part 54 is directly connected to the second valve 532 of the air supply valve 53 via the drive end 542. The linear movement of the guide rod 52 drives the self-cleaning valve 55, the air supply valve 53, and the shielding part 54 to move synchronously without the need for connecting rods or gear transmission.

[0062] The drive unit 51 can be an electromagnetic driver. When the electromagnetic driver is de-energized (or in one of its working states), the guide rod 52 returns to the rear side, the air supply valve 53 closes the air supply port 23, the self-cleaning valve 55 closes the self-cleaning port 24, and the shielding part 54 opens the filter port 31.

[0063] When the electromagnetic driver is powered on (or in another working state), the guide rod 52 is pushed forward, the air supply valve 53 opens the air supply port 23, the self-cleaning valve 55 opens the self-cleaning port 24, and the shielding part 54 closes the filter port 31.

[0064] This linear linkage design reduces transmission components, avoids assembly errors caused by multi-directional motion, and significantly improves motion stability.

[0065] Furthermore, the air replenishment valve 53 includes a first valve 531 and a second valve 532, such as Figures 3-9 As shown, the air supply port 23 includes a first port and a second port, and the first valve 531 is used to open or close the first port.

[0066] The guide rod 52 passes through the first and second openings, leaving a gap between it and the two openings. This is to prevent friction and scratches, and also to allow airflow to pass through the gap between the guide rod 52 and the first and second openings when the first valve 531 and the second valve 532 are opened.

[0067] The second valve 532 is fixed to the drive end 542 of the shielding part 54 via the connector 543, such as Figure 3 , 7As shown in Figure 11, ensure that the shielding part 54 and the second valve 532 move synchronously. In the dust suction state, the guide rod 52 is located at the rear, and the front sealing surfaces of the first valve 531 and the second valve 532 abut against the front outer edges of the first and second ports, respectively, blocking the air supply channel 21; at this time, the air blown out from the motor outlet 12 passes between the first and second ports and blows outward. During self-cleaning, the guide rod 52 moves forward, the two valves disengage from the opening, and outside air enters the air supply channel 21 through the gap between the guide rod 52 and the first port.

[0068] Furthermore, the drive element 51 drives the guide rod 52 to reciprocate between the first position and the second position, such as... Figure 3 , 4 As shown in 5, 6, 8, and 9, the first position is located in front of the second position.

[0069] like Figure 11 As shown, the shielding part 54 includes a drive end 542, a step part 544 and a baffle 541 connected in sequence. The shielding part 54 is fixedly connected to the second valve 532 through the drive end 542. A sealing ring is provided on the side of the baffle 541 facing the step part 544, and the step part 544 is connected inside the sealing ring. Figure 7 In the middle, the drive end 542 and the second valve 532 are fixedly connected by a connector 543, which can be a bolt, to achieve a detachable connection and fixation.

[0070] In the first position, such as Figure 3 , 5 As shown in Figure 8, the first valve 531 closes the first port in front of the first port, the second valve 532 closes the second port in front of the second port, the shielding part 54 opens the filter port 31, and the stepped part 544 is adjacent to the outer edge of the filter port 31 and forms an airflow gap with the outer wall of the filter port 31 to prevent the shielding part 54 from blocking the filter port 31.

[0071] Thus, in the first position (corresponding to the dust suction state), the guide rod 52 is at its rear extreme position, and the rear sealing surfaces of the first valve 531 and the second valve 532 of the air supply valve 53 abut against the front outer edges of the first and second ports of the air supply port 23, respectively, forming a positive compression seal. Figure 3 As shown, the step portion 544 is as close as possible to the upper edge of the filter port 31. At this time, the upper surface of the step portion 544 is close to the outer edge of the filter port 31 but does not completely abut against it, and a preset gap is maintained between it and the outer wall of the filter port 31. The lower surface of the step portion 544 is as far away as possible from the lower edge of the filter port 31. That is, the distance between the lower surface of the step portion 544 and the lower edge of the filter port 31 is much greater than the distance between the upper surface of the step portion 544 and the upper edge of the filter port 31.

[0072] This creates the largest possible opening between the lower surface of the stepped portion 544 and the lower edge of the filter port 31, ensuring smooth airflow through the filter port 31. The stepped portion 544 ensures efficient airflow.

[0073] In the second position, such as Figure 4 , 6 As shown in Figure 9, the first valve 531 opens the first port, the second valve 532 opens the second port, the shielding part 54 closes the filter port 31 at the rear side, and the baffle 541 abuts against the sealing ring between the rear side of the filter port 31 and the inner wall of the filter port 31.

[0074] In the second position (corresponding to the self-cleaning state), the guide rod 52 moves forward to the front limit position, and the first valve 531 and the second valve 532 of the air supply valve 53 disengage from the air supply port 23. Outside air enters the air supply channel 21 through the gap between the guide rod 52 and the air supply port 23. At the same time, the baffle 541 of the shielding part 54 abuts against the wall of the outer edge of the filter port 31 on the rear side of the filter port 31 and achieves a seal through the sealing ring.

[0075] like Figure 10 As shown, the filter cover 30 also includes a plurality of spray holes 32 arranged in an array. The spray holes 32 are arranged facing the filter 40. In the dust suction state, the airflow blows from the filter port 31 next to the spray hole 32 toward the motor. At this time, there is no airflow or very little airflow in the spray hole 32. In the self-cleaning state, the filter port 31 is closed by the shielding part 54. The airflow blown out from the motor air outlet 12 passes through the plurality of spray holes 32 and sprays toward the filter 40, which plays the role of removing the dust particles attached to the filter 40.

[0076] The first and second positions are mechanically limited, that is, the guide rod 52 is precisely positioned through a precise abutment relationship. The abutment relationship of the air supply valve 53, the self-cleaning valve 55 and the shielding part 54 ensures the complete sealing of each opening, ensuring the positioning accuracy of the first and second positions and avoiding sealing failure caused by long-term movement deviation.

[0077] Furthermore, such as Figure 2 As shown, the cleaning device 100 also includes a filter cover 30, a lower cover 60, and a tray 70. The lower cover 60 has an air supply hole 61. The air supply channel 21 includes a first air duct 211 and a second air duct 212. The first air duct 211 is located between the motor air inlet 11 and the air supply hole 61, and the second air duct 212 is located between the air supply hole 61 and the air supply port 23. The lower cover 60 and the tray 70 enclose the first air duct 211. The first air duct 211 and the second air duct 212 are as follows: Figures 2-4 As shown.

[0078] A filter port 31 is provided on the side wall of the filter cover 30. The filter port 31, the second air duct 212, the air supply hole 61, the first air duct 211, and the motor air inlet 11 are connected in sequence.

[0079] The shielding part 54 includes a baffle 541, which is disposed on the side of the filter port 31 away from the second air duct 212. When the shielding part 54 is driven to switch from opening the filter port 31 to closing the filter port 31, the baffle 541 is driven to move towards the second air duct 212 until the filter port 31 is closed. The air supply port 23, the filter port 31, and the self-cleaning port 24 are all arranged in parallel, so that the shielding part 54, the air supply valve 53, and the self-cleaning valve 55 can cover these ports respectively when they move in the same direction.

[0080] Furthermore, an exhaust port 25 is also provided inside the housing 20, such as... Figure 5 , 6 As shown, the self-cleaning valve 55 is also used to open or close the vent port 25. Additionally, Figure 5 The diagram also shows an exhaust passage 26 that connects to the exhaust port 25.

[0081] In the dust suction state, the guide rod 52 is located at the rear. The self-cleaning valve 55 is driven to open the exhaust port 25 while closing the self-cleaning port 24. The motor air outlet 12 is connected to the outside through the exhaust port 25. The airflow blown out from the motor air outlet 12 is blown to the exhaust port 25 through the exhaust channel 26 and finally blown to the outside.

[0082] In self-cleaning mode, the guide rod 52 moves forward, causing the self-cleaning valve 55 to open the self-cleaning port 24 and close the exhaust port 25 simultaneously, causing the airflow from the motor outlet 12 to reverse and impact the filter 40. The self-cleaning valve 55 is synchronized with the air supply valve 53 through the linkage of the guide rod 52. Multiple parts are driven by a single drive component 51 to move linearly in the front-back direction. The movement method is simple and clear, and interference between the various components during movement is prevented, simplifying the structure and improving sealing reliability. Ultimately, this achieves efficient switching between dust collection and self-cleaning modes while ensuring airflow concentration and equipment compactness.

[0083] Compared with the prior art, this embodiment has the following beneficial effects:

[0084] The cleaning device 100 adjusts the positions of the filter port 31 and the air supply port 23 so that the valves in each air path can operate in conjunction in the same direction of movement. That is, by simply moving the shielding part 54 and the air supply valve 53 in the same direction simultaneously through the drive mechanism 50, the airflow path can be changed quickly and reliably in different states. Therefore, the cleaning device 100 not only significantly reduces the structural difficulty and manufacturing cost required for the self-cleaning function, but also greatly reduces the size of the device due to the replanning of the airflow path. Correspondingly, the cleaning device 100 has a lower cost and higher working efficiency and stability in the self-cleaning and dust collection process.

[0085] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0086] The detailed descriptions listed above are merely specific descriptions of feasible implementation methods of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementation methods or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A cleaning device having a dust suction state and a self-cleaning state, comprising: a housing provided with a supplementary air inlet, a filter inlet and a self-cleaning inlet; a motor for driving air flow, the motor having a motor air inlet and a motor air outlet, a supplementary air channel being formed between the supplementary air inlet and the motor air inlet; a filter for filtering dirt in the air flow; a supplementary air valve for opening or closing the supplementary air inlet; a shielding part for opening or closing the filter inlet; a self-cleaning valve for opening or closing the self-cleaning inlet; characterized in that the cleaning device further comprises a driving mechanism for simultaneously driving the shielding part, the supplementary air valve and the self-cleaning valve to move in the same direction to switch the cleaning device between the dust suction state and the self-cleaning state; in the dust suction state, the supplementary air valve is driven to close the supplementary air inlet, the self-cleaning valve is driven to close the self-cleaning inlet, and the shielding part is driven to open the filter inlet, the filter, the filter inlet, the supplementary air channel and the motor air inlet being sequentially communicated; in the self-cleaning state, the supplementary air valve is driven to open the supplementary air inlet, the self-cleaning valve is driven to open the self-cleaning inlet, and the shielding part is driven to close the filter inlet, the motor air inlet being communicated with the outside through the supplementary air channel, and the motor air outlet, the self-cleaning inlet and the filter being sequentially communicated.

2. The cleaning device of claim 1, wherein, the plane where the supplementary air inlet is located and the plane where the filter inlet is located are both parallel to a first plane, and the direction in which the shielding part and the supplementary air valve move is perpendicular to the first plane.

3. The cleaning device of claim 2, wherein, the direction in which the shielding part and the supplementary air valve move is perpendicular to the arrangement direction of the motor to the filter.

4. The cleaning device of claim 1, wherein, the driving mechanism comprises a driving member and a guide rod, the self-cleaning valve and the supplementary air valve are fixedly connected to the guide rod, and the shielding part is fixedly connected to any one of the supplementary air valve, the self-cleaning valve and the guide rod.

5. The cleaning device of claim 4, wherein, the supplementary air valve comprises a first valve and a second valve, the supplementary air inlet comprises a first inlet and a second inlet, the first valve is used for opening or closing the first inlet, the second valve is used for opening or closing the second inlet, the second valve is fixedly connected to the shielding part, and the guide rod passes through the first inlet and the second inlet and forms a gap with the first inlet and the second inlet.

6. The cleaning device of claim 5, wherein, the driving member drives the guide rod to reciprocate between a first position and a second position, and the first position is located in front of the second position; in the first position, the first valve closes the first inlet in front of the first inlet, the second valve closes the second inlet in front of the second inlet, and the shielding part opens the filter inlet; in the second position, the first valve opens the first inlet, the second valve opens the second inlet, and the shielding part closes the filter inlet in back of the filter inlet.

7. The cleaning device of claim 6, wherein, the shielding part comprises a driving end, a step part and a baffle which are sequentially connected, the shielding part is fixedly connected to the second valve through the driving end, and a sealing ring is arranged on the side of the baffle facing the step part. In the first position, the step portion is adjacent to the outer edge of the filter port and forms an airflow gap with the outer wall of the filter port to prevent the blocking portion from blocking the filter port. In the second position, the baffle abuts against the sealing ring between the rear side of the filter port and the inner wall of the filter port.

8. The cleaning device of claim 1, wherein, The cleaning device further comprises a filter cover, a lower head cover, and a tray, the lower head cover is provided with a make-up air hole, the air supplementing channel comprises a first air duct and a second air duct, the first air duct is located between the motor air inlet and the make-up air hole, the second air duct is located between the make-up air hole and the air supplementing port, and the lower head cover and the tray enclose the first air duct. The filter port is arranged on the side wall of the filter cover, and the filter port, the second air duct, the make-up air hole, the first air duct, and the motor air inlet are sequentially communicated.

9. The cleaning device of claim 8, wherein, The blocking portion comprises a baffle, the baffle is arranged on the side of the filter port away from the second air duct, and when the blocking portion is driven to switch from opening the filter port to closing the filter port, the baffle is driven to move towards the second air duct until the filter port is closed.

10. The cleaning device of claim 1, wherein, The housing is further provided with an exhaust port, and the self-cleaning valve is further used for opening or closing the exhaust port. In the dust suction state, the self-cleaning valve is driven to open the exhaust port while closing the self-cleaning port, and the motor air outlet is communicated with the outside through the exhaust port. In the self-cleaning state, the self-cleaning valve is driven to close the exhaust port while opening the self-cleaning port.

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