Cleaning device and fluid outlet component

Abstract

Cleaning device comprising a floor brush component, wherein the floor brush component comprises: a floor brush housing (1); a roller brush (2), wherein the roller brush (2) is rotatably connected to the floor brush housing (1) and is designed to clean a work surface; and a liquid outlet component arranged on the bottom brush housing (1), wherein the liquid outlet component comprises a liquid outlet plate (3), a liquid inlet (31) and a liquid outlet (32) arranged on the liquid outlet plate (3), and a liquid flow channel (33) connecting the liquid inlet (31) and the liquid outlet (32), wherein a liquid dividing element (36) and guide elements are provided on the liquid outlet plate (3) at a position corresponding to the liquid outlet (32), and the guide elements are designed such that they extend from a position adjacent to the liquid outlet (32) and form guide points (370) at an end remote from the liquid outlet (32); and The liquid flowing out of the liquid outlet (32) is directed in such a way that it flows along the guide parts after it has been divided by the liquid dividing part (36).

Description

[0001] The present disclosure claims priority from Chinese patent application No. 202411849986.X entitled “CLEANING DEVICE”, which was filed with the Chinese Patent Office on December 14, 2024 and is incorporated herein in full by reference. TECHNICAL AREA OF INVENTION

[0002] The present disclosure relates to the technical field of cleaning devices and in particular to a cleaning device and a liquid outlet component. STATE OF THE ART

[0003] As societal productivity increased, people's living standards rose. With their material resources secured, people began to use various tools to reduce their workload and improve the quality of domestic life, and thus household cleaning appliances were developed.

[0004] Regarding floor scrubbers, conventional floor scrubbers often suffer from uneven water spraying at low flow rates, which can lead to varying moisture levels on different parts of the roller brush. In a cleaning area traversed by the roller brush, a section with high moisture content can leave a wet trail on the floor, resulting in uneven water distribution and slowing down the drying process. This not only impairs the effectiveness of the floor cleaning but can also pose safety hazards, as people are more likely to slip on the slippery surface. BRIEF SUMMARY OF THE INVENTION

[0005] A cleaning device according to the present disclosure is provided to solve the problems in the prior art.

[0006] According to a first aspect of the present disclosure, a cleaning device is provided which includes a floor brush component. The floor brush component comprises a floor brush housing, a roller brush, and a liquid outlet component. The roller brush is rotatably connected to the floor brush housing and is configured to clean a work surface. The liquid outlet component is arranged on the floor brush housing. The liquid outlet component comprises a liquid outlet plate, a liquid inlet and a liquid outlet arranged on the liquid outlet plate, and a liquid flow channel connecting the liquid inlet and the liquid outlet.A liquid dividing element and guide elements are provided on the liquid outlet plate at a position corresponding to the liquid outlet, and the guide elements are designed to extend from a position adjacent to the liquid outlet and form guide points at an end furthest from the liquid outlet. Liquid flowing from the liquid outlet is guided such that it flows along the guide elements after being divided by the liquid dividing element.

[0007] In one embodiment, the guide elements are arranged on both sides of the liquid dividing part, and the guide elements are designed such that they extend from a position adjacent to the liquid outlet in a spaced-apart manner and form at least two spaced-apart guide points at an end away from the liquid outlet.

[0008] In one embodiment, the guide elements comprise guide ribs located on opposite sides of the liquid dividing element; each of the guide ribs is designed to extend obliquely in an axial direction of the roller brush, and the ends of the guide ribs furthest from the liquid outlet form two spaced-apart guide points on the liquid outlet plate.

[0009] In one embodiment, the guide elements further comprise a guide surface connected to an underside of the guide ribs, wherein the guide surface is located on a different side of the guide ribs relative to the liquid dividing part, and the guide surface is designed such that it gradually inclines in a vertical direction from a position adjacent to the liquid outlet towards a direction of the roller brush.

[0010] In one embodiment, a dividing rib is provided at a position between adjacent liquid outlets on the guide surface, and the dividing rib is designed such that it extends from an end adjacent to the liquid outlet to an edge of the liquid outlet plate.

[0011] In one embodiment, the liquid dividing part is designed such that it extends upwards between two guide ribs to a position that is higher than the liquid outlet.

[0012] In one embodiment, a scraper plate is provided below the liquid outlet plate, and the scraper plate is designed such that it has an interference fit with the roller brush; one side of the scraper plate near the roller brush is designed such that it extends beyond the edge of the liquid outlet plate, and the liquid flowing downwards from the guide elements is directed such that it flows through the scraper plate to the roller brush.

[0013] In one embodiment, the distance between an outer edge of the wiper plate and a position between two guide points is greater than the distance between the dividing rib and the outer edge of the wiper plate.

[0014] In one embodiment, an exposed area on the wiper plate, corresponding to a zone between two guide points, is larger than an exposed area on the wiper plate, corresponding to a zone of the dividing rib.

[0015] In one embodiment, the fluid flow channel comprises at least two stages of division channels located at different heights and connected sequentially, and fluid flows in two different directions when it flows into each of the division channels; a reversing buffer zone is provided at a position where two adjacent stages of the division channels are connected, and the fluid is directed such that it flows into a division channel of a lower stage after changing direction at least twice in the reversing buffer zone.

[0016] In one embodiment, the reversing buffer zone comprises a fluid storage zone located below a division channel of a higher stage, and the fluid storage zone is configured to be connected to two division channels of a lower stage located on either side of it; a bottom surface of the fluid storage zone is configured to be lower than a division channel of a lower stage, and a top surface of the fluid storage zone is configured to be no higher than the division channel of the lower stage; and a fluid in a division channel of a higher stage is directed to flow into the fluid storage zone, and when a fluid level in the fluid storage zone reaches a predetermined height, the fluid flows to the division channels of the lower stage on either side of the division channel of the higher stage.

[0017] In one embodiment, the reversing buffer zone further comprises a first guide rib and a second guide rib; the first guide rib and the second guide rib are configured such that they form a reversing channel which is configured to extend from the dividing channel of the higher stage towards a direction of the liquid storage zone, and the liquid in the dividing channel of the higher stage is guided such that it flows through the reversing channel into the liquid storage zone.

[0018] In one embodiment, in the least upstream reversing buffer zone, an end of the reversing channel adjacent to the liquid storage zone is designed such that it is lower in a vertical direction than the top of the liquid storage zone.

[0019] In one embodiment, a barrier wall is provided at one end of the division channel of the higher stage and in a direction of extension of the division channel of the higher stage, and one end of the turning channel is configured such that it is connected to the division channel of the higher stage at a position offset from the barrier wall in order to form a liquid buffer zone in a zone between the barrier wall and the turning channel in the division channel of the higher stage, and the liquid buffer zone lies in a direction of extension of the division channel of the higher stage.

[0020] In one embodiment, the liquid flow channel comprises at least three stages of division channels, which are successively designated as the first-stage division channel, the second-stage division channel, and the third-stage division channel in a direction from the liquid inlet to the liquid outlet; the reversal buffer zone between the first-stage division channel and the second-stage division channel and the reversal buffer zone between the second-stage division channel and the third-stage division channel are designated as the first buffer zone and the second buffer zone, respectively; wherein the third-stage division channel and the second buffer zone are configured such that they are located within an extension area of ​​the first buffer zone in an axial direction of the roller brush.

[0021] In one embodiment, the liquid flow channel further comprises a connecting channel for connecting the liquid inlet to the division channel of the first stage, and the connecting channel is designed to be lower than the division channel of the first stage; an inlet buffer zone is provided at a connection position between the connecting channel and the division channel of the first stage; liquid in the connecting channel is guided in such a way that it flows upwards into the division channel of the first stage after changing its flow direction at least twice in the inlet buffer zone.

[0022] In one embodiment, the connecting channel is designed such that it is at the same level as the dividing channel of the second stage; the inlet buffer zone is designed such that it lies within an extension area of ​​the first buffer zone in an axial direction of the roller brush.

[0023] In one embodiment, the height of the upstream reversing buffer zone is greater than the height of the downstream reversing buffer zone; and / or the height of the most downstream reversing buffer zone is less than the height of the reversing buffer zone at another position.

[0024] In one embodiment, the height of the reversing buffer zone comprises the depth of the liquid storage zone and the extension length of the reversing channel.

[0025] In one embodiment, each of the at least two stages of division channels is configured such that it extends along an axial direction of the roller brush, and the division channel of a higher stage is configured such that it is connected to a central part of a division channel of a lower stage by a reversing buffer zone, and fluid located in the reversing buffer zone is directed such that it flows to the division channels of the lower stage on both sides of the division channel of the higher stage; the most upstream division channel is configured such that it is connected to the fluid inlet; the number of fluid outlets is more than one, and several most downstream division channels are configured such that they are each connected to several fluid outlets.

[0026] According to a second aspect of the present disclosure, a liquid outlet component is provided, comprising: a liquid outlet plate, a liquid inlet and a liquid outlet arranged on the liquid outlet plate, and a liquid flow channel connecting the liquid inlet and the liquid outlet. A liquid dividing element and guide elements are provided on the liquid outlet plate at a position corresponding to the liquid outlet, and the guide elements are configured to extend from a position adjacent to the liquid outlet and form guide points at an end remote from the liquid outlet. Liquid flowing from the liquid outlet is directed such that it flows along the guide elements after being divided by the liquid dividing element.

[0027] An advantageous effect of the present disclosure is that a liquid-dividing element and guide elements are further provided at a corresponding position of each liquid outlet. The liquid flowing from the liquid outlet is guided in such a way that it flows along the guide elements on both sides after being divided by the liquid-dividing element, thereby improving the distribution effect of the liquid outlet plate.

[0028] Further features and advantages of the present disclosure will become clear through the detailed description of the exemplary embodiments of the present disclosure with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings, which are integrated into and form part of the description, illustrate embodiments of the present disclosure and are used together with the description to explain the principles of the present disclosure. Fig. Figure 1 is a sectional view of a floor brush component according to the present disclosure; Fig. 2 is an enlarged partial view of the floor brush component in Fig. 1 at a position of a liquid outlet plate; Fig. Figure 3 is an exploded view of the assembly of a liquid outlet plate according to the present disclosure; Fig. Figure 4 is a sectional view of a liquid outlet plate according to the present disclosure; Fig. 5 is an enlarged partial view of part C in Fig. 4; Fig. Figure 6 is an enlarged partial view of part B in Fig. 4; Fig.Figure 7 is an enlarged partial view of part A in Fig. 4; Fig. Figure 8 is an enlarged partial view of a structure of a liquid outlet plate according to the present disclosure; Fig. 9 is a front view of a liquid outlet plate according to the present disclosure; Fig. Figure 10 is a schematic representation of the construction of a liquid outlet plate and a scraper plate according to the present disclosure; Fig. Figure 11 is an enlarged partial view of part D in Fig. 10; Fig. Figure 12 shows a moisture test result for segments of a roller brush in a control group according to a second embodiment of the present disclosure; Fig. Figure 13 shows a moisture test result for segments of a roller brush in a test group according to a second embodiment of the present disclosure; Fig.Figure 14 shows a flow rate test result for liquid outlets in a control group according to a second embodiment of the present disclosure; Fig. Figure 15 shows a flow rate test result for liquid outlets in a test group according to a second embodiment of the present disclosure; Fig. Figure 16 is a sectional view of a state-of-the-art liquid outlet plate.

[0030] The unambiguous correspondence between the component designations and the reference symbols in the Fig. 1 to 16 is as follows: 1. Bottom brush housing; 11. Drive wheel; 2. Roller brush; 3. Liquid outlet plate; 31. Liquid inlet; 32. Liquid outlet; 33. Liquid flow channel; 331. First stage division channel; 332. Second stage division channel; 333. Third stage division channel; 334. Connecting channel; 34. Reversing buffer zone; 341. First buffer zone; 342. Second buffer zone; 343. Inlet buffer zone; 344. Liquid storage zone; 345. Reversing channel; 3451. First guide rib; 3452. Second guide rib; 35. Barrier wall; 351. Liquid buffer zone; 36. Liquid division section; 370. Guide point; 371. Guide surface; 372. Guide rib; 38. Division rib; 4. Scraper plate; 41. Exposed zone; 5. Intake opening. DETAILED DESCRIPTION

[0031] With reference to the drawings, various exemplary embodiments of the present disclosure are now described in detail. It is noted that the respective arrangement, numerical terms, and values ​​of the components and steps described in the embodiments do not limit the scope of the present disclosure unless otherwise stated.

[0032] The following description of at least one embodiment serves only for illustration and should not be understood as a limitation of the present disclosure or its application or use.

[0033] Techniques, methods and devices known to the person skilled in the art may not be described in detail, but should be considered as part of the description under appropriate circumstances.

[0034] It should be noted that identical reference symbols and letters represent identical elements in the drawings. Therefore, once an element is defined in one figure, it does not need to be described further in subsequent figures.

[0035] Here, the terms "above", "below", "front", "back", "left", "right", etc. are used only to represent the relative positional relationship between related parts, and not to restrict the absolute position of these related parts.

[0036] Here, the terms "first / first / first", "second / second / second", etc. serve only to differentiate and not to indicate importance and order, nor the premise of mutual existence.

[0037] In this context, terms such as "equal" or "identical" do not represent strictly mathematical or geometric restrictions, but also include permissible errors that are understandable to a person skilled in the art and are acceptable in manufacture or use. First embodiment

[0038] A cleaning device according to the present disclosure is provided, which may be a handheld cleaning device, such as a handheld cleaning machine, a handheld wet vacuum cleaner, a handheld floor scrubber, a handheld fabric cleaning machine, and other handheld cleaning devices well known to those skilled in the art. The cleaning device may also be a floor scrubber robot, a sweeping and mopping robot, and other self-propelled cleaning devices well known to those skilled in the art. A handheld floor scrubber is used as an example of a cleaning device in this embodiment. The cleaning device comprises a handpiece (not shown in the figures), a body (not shown in the figures), and a floor brush component connected below the body.In particular, the floor brush component is rotatably connected to the body, as shown in . Fig. Figure 1 illustrates this. When the cleaning device is placed on a work surface or is cleaning the work surface, the floor brush component remains in contact with the surface. When the cleaning device is switched on, the user holds the handpiece, tilts the body, and moves it back and forth with a pushing and pulling motion. The floor brush component moves along with the body on the work surface to clean it of dirt. When the user holds the handpiece so that the device is upright, the cleaning device stops operating.

[0039] Referring to Fig.The floor brush component comprises a floor brush housing 1, a roller brush 2, and a liquid outlet component. The roller brush 2 is rotatably connected to the floor brush housing 1 and is designed to clean a work surface. An outer surface of the roller brush 2 may be covered with cleaning cotton, roller brush bristles, or other cleaning components. One axis of rotation of the roller brush 2 is parallel to the work surface. During normal operation, the roller brush 2 can rotate in a direction indicated by an arrow pointing upwards. Fig. 1. indicated direction (referring to the direction shown in Fig. Rotate (in the direction shown, i.e., clockwise) during rotation. While rotating, the roller brush (2) can moisten and wipe the work surface. As shown in Fig.As shown in Figure 1, the roller brush 2 can be rotatably connected to one side of the floor brush housing 1, and a drive wheel 11 can be provided on the other side. The drive wheel 11 rotates by a forward and backward force applied by a user, or the drive wheel 11 rotates by its own driving force if the cleaning device of the present disclosure is a cleaning robot, in order to drive the cleaning device for movement on the work surface.

[0040] The fluid outlet component is, with reference to the Fig. 2 and Fig.3, arranged on the floor brush housing 1. The liquid outlet component comprises a liquid outlet plate 3, a liquid inlet 31, and a liquid outlet 32 ​​arranged on the liquid outlet plate 3, and a liquid flow channel 33 connecting the liquid inlet 31 and the liquid outlet 32. The liquid outlet plate 3 is configured to provide a cleaning medium for the roller brush 2, enabling the cleaning device to moisten and wipe the work surface during cleaning. The cleaning medium can be pure water or a disinfectant solution of a suitable concentration, etc., which is not subject to any limitation in this disclosure. The floor brush component can be equipped with a pure water tank and / or a cleaning solution tank.The liquid inlet 31 of the liquid outlet plate 3 can be connected to an outlet of the clean water tank and / or the cleaning solution tank. The cleaning medium enters the liquid outlet plate 3 through the liquid inlet 31 and flows through the liquid flow channel 33 to the liquid outlet 32. The liquid outlet 32 ​​can be configured to be opposite the roller brush 2 in order to supply cleaning medium to the roller brush 2.

[0041] Referring to Fig.4 The liquid flow channel 33 comprises at least two stages of division channels arranged at different heights and connected sequentially. The most upstream division channel is configured to be connected to the liquid inlet 31, and it has multiple liquid outlets 32. Several most downstream division channels are configured to be connected to multiple liquid outlets 32 accordingly. In one embodiment of the present disclosure, the most upstream position can be the highest position, and the most downstream position can be the lowest position, so that the cleaning fluid can flow downwards naturally under the influence of gravity, thereby achieving gradual division.The cleaning fluid flows from the fluid inlet 31 into the most upstream dividing channel and is gradually diverted downwards to flow out of the multiple fluid outlets 32. It should be noted that each upstream dividing channel is connected to at least two downstream dividing channels that can perform the dividing function. A water channel connected to only a single dividing channel is not among the dividing channels referred to in this disclosure. That is to say, a dividing channel refers to a channel in which fluid flows in two opposite directions after entering the channel. Because the fluid flows in two different directions within the channel, the dividing channel can perform the dividing function.

[0042] Referring to the Fig. 4 and Fig.5 In one embodiment of the present disclosure, the liquid flow channel 33 comprises at least three stages of division channels, which are successively designated as division channel of the first stage 331, division channel of the second stage 332, and division channel of the third stage 333 in a direction from the liquid inlet 31 to the liquid outlet 32. Referring to the Fig. In the direction shown in Figure 4, the liquid flow channel 33 comprises, from top to bottom, the first stage division channel 331, the second stage division channel 332, and the third stage division channel 333, each of which is designed to extend along the axial direction of the roller brush 2. As shown in Figure 4, the liquid flow channel 33 comprises, from top to bottom, the division channel of the first stage 331, the division channel of the second stage 332, and the division channel of the third stage 333, each of which is designed to extend along the axial direction of the roller brush 2. Fig.As shown in Figure 4, the first-stage dividing channel 331 and the second-stage dividing channel 332 also have overlapping projections in a vertical direction, and the two stages of dividing channels can share a barrier wall. Likewise, the second-stage dividing channel 332 and the third-stage dividing channel 333 also have overlapping projections in the vertical direction, and the two stages of dividing channels can also share a barrier wall. In this way, the space occupied by the flow channel walls of the three stages of dividing channels is reduced, and the size of the liquid outlet plate 3 in the vertical direction is reduced.

[0043] As in Fig.As shown in Figure 5, the liquid flow channel 33 further comprises a connecting channel 334 for connecting the liquid inlet 31 to the division channel of the first stage 331, and the connecting channel 334 is configured to be lower than the division channel of the first stage 331. It should be noted that the connecting channel 334 is directly connected to the liquid inlet 31 and thus forms the most upstream channel. A downstream end of the connecting channel 334 is connected to the division channel of the first stage 331. However, since the connecting channel 334 is only connected to a division channel of a lower stage, the liquid flows in only one direction within the connecting channel 334. Therefore, the connecting channel 334 does not fulfill the division function. It is evident that the connecting channel 334 is not among the division channels referred to in the present disclosure.In this embodiment, the division channels comprise only the division channel of the first stage 331, the division channel of the second stage 332, and the division channel of the third stage 333. The connecting channel 334 is connected to a central part of the division channel of the first stage 331, so that the cleaning fluid flowing from the liquid inlet 31 into the connecting channel 334 can enter the division channel of the first stage 331 from the central part.

[0044] As in Fig.As shown in Figure 5, the liquid inlet 31 and the connecting channel 334 are arranged in the same direction as the dividing channel of the second stage 332. On the one hand, this allows for full utilization of the space of the liquid outlet plate 3 without requiring an additional expansion space for the liquid inlet 31 above the dividing channel of the first stage 331, thus reducing the size of the liquid outlet plate 3. On the other hand, the distance between the liquid inlet 31 and the dividing channel of the first stage 331 is reduced, resulting in a shorter connecting channel 334 and minimizing the energy consumption for the flow of the cleaning medium against gravity.

[0045] Further referring to Fig.4. The liquid enters the connecting channel 334 from the liquid inlet 31, flows to the right along the connecting channel 334, and enters the first-stage division channel 331 as it flows towards the end of the connecting channel 334. In the first-stage division channel 331, the liquid flows to the left and right, respectively. When the liquid reaches the ends on both sides, it flows into the division channels of the second stage 332. As in Fig.As shown in Figure 4, each end of the first-stage dividing channel 331 is connected to a central portion of the second-stage dividing channel 332. This means that in this embodiment, there are two second-stage dividing channels 332, and the fluid can flow from one connecting end to either end of the second-stage dividing channel 332. Furthermore, each end of each second-stage dividing channel 332 is connected to a central portion of the third-stage dividing channel 333. This means that in this embodiment, there are a total of four third-stage dividing channels 333, and the fluid can flow from one connecting end to either end of the third-stage dividing channel 333. Each end of each third-stage dividing channel 333 is provided with a fluid outlet 32, meaning that in this embodiment, there are a total of eight fluid outlets 32.In this embodiment, the liquid in the liquid flow channel 33 is divided three times, ultimately forming eight liquid streams. The eight liquid outlets 32 can be distributed at equal intervals on the liquid outlet plate 3, and the liquid can flow from each of the eight liquid outlets 32 to moisten different parts of the roller brush 2.

[0046] However, the conventional design of the liquid flow channel 33 can easily lead to uneven liquid spraying from the liquid outlets 32, especially at low total flow rates (such as 20-100 ml / min), where the uneven liquid spraying is more pronounced. Referring to Fig.16. The fluid flows from the fluid inlet 31 into the division channel of the first stage 331. The fluid entering the division channel of the second stage 332 from the right end of the division channel of the first stage 331 exhibits a right-biased inertia, which causes more fluid to flow to the right side of the division channel of the second stage 332 and less fluid to the left side of the division channel of the second stage 332. When the fluid enters the division channel of the third stage 333 from the division channel of the second stage 332, the fluid is also distributed unevenly according to the current inertia, resulting in flow differences between the four fluid outlets 32 on the right side.Similarly, the fluid entering the division channel of the second stage 332 from the left end of the first stage division channel 331 exhibits a left-biased inertia, causing more fluid to flow to the left side of the second stage division channel 332 and less fluid to the right side. When the fluid enters the division channel of the third stage 333 from the second stage division channel 332, it is also distributed unevenly according to the current inertia, resulting in flow rate differences between the four left-hand fluid outlets 32. Consequently, the flow rate of the rightmost fluid outlet 32 ​​is the highest, and the flow rate of the third left-hand fluid outlet 32 ​​is the lowest.In the case of a high total flow rate, the problem of uneven liquid discharge is not very apparent because the liquid flow channel 33 is completely filled with liquid. However, in the case of a low total flow rate, the flow rate difference between the liquid outlets 32 will be very significant, causing considerable differences in moisture at various points on the roller brush 2 and leading to an uneven distribution of water traces on the work surface and a reduction in the cleaning effect of the roller brush 2.

[0047] To solve the aforementioned problems, according to the present disclosure, a reversing buffer zone 34 is provided at a position where two adjacent stages of division channels are connected, and the fluid is directed such that it flows into a division channel of a lower stage after changing its flow direction at least twice in the reversing buffer zone 34. In the process of gradual division, the flow direction is first changed in the reversing buffer zone 34 before each division, thereby reducing the kinetic energy of the fluid and the inertia of the fluid in the preceding division channel. The fluid in the reversing buffer zone 34 can, in principle, flow uniformly into the division channel of the lower stage, thus reducing the flow rate difference during division.According to the present disclosure, the flow distribution in the liquid outlet component is uniform even at a low flow rate, and the various liquid outlets 32 of the liquid outlet component can maintain a fundamentally uniform liquid output, thereby improving the user experience.

[0048] Referring to Fig.4 In one embodiment of the present disclosure, the division channel of a higher stage is configured such that it is connected to a central part of the division channel of a lower stage via the reversing buffer zone 34, and the fluid in the reversing buffer zone 34 is directed such that it flows to both sides of the division channel of the lower stage. The reversing buffer zones 34 between the division channel of the first stage 331 and the division channel of the second stage 332, as well as between the division channel of the second stage 332 and the division channel of the third stage 333, are designated as the first buffer zone 341 and the second buffer zone 342, respectively. As in Fig.As shown in Figure 5, an inlet buffer zone 343 is arranged at a connection point between the connecting channel 334 and the splitting channel of the first stage 331. The fluid in the connecting channel 334 is directed such that it flows upwards into the splitting channel of the first stage 331 after changing its flow direction at least twice in the inlet buffer zone 343. This reduces the flow inertia and the horizontal kinetic energy of the fluid in the connecting channel 334, allowing the fluid to be redirected more evenly to both sides of the splitting channel of the first stage 331.

[0049] In this embodiment, the connecting channel 334 is connected via the inlet buffer zone 343 to the central part of the first-stage division channel 331. This means that there is one first-stage division channel 331, and the fluid in the inlet buffer zone 343 enters the first-stage division channel 331 and flows to the two opposite ends of the first-stage division channel 331. Each end of the first-stage division channel 331 is connected via a corresponding first buffer zone 341 to the central part of the corresponding second-stage division channel 332. This means that there are two second-stage division channels 332, and the central part of each second-stage division channel 332 is connected via the first buffer zone 341 to a corresponding end of the first-stage division channel 331.Therefore, the liquid in the first buffer zone 341 enters the division channel of the second stage 332 and flows to the two opposite ends of the division channel of the second stage 332. Each of the two ends of the division channel of the second stage 332 is connected to the middle part of the division channel of the third stage 333 by a corresponding second buffer zone 342. That is, there are four division channels of the third stage 333, and the middle part of each division channel of the third stage 333 is connected to the corresponding end of the division channel of the second stage 332 by the second buffer zone 342. Therefore, the liquid in the second buffer zone 342 enters the division channel of the third stage 333 and flows to the two opposite ends of the division channel of the third stage 333.In this way, the liquid can be distributed in a generally uniform manner to the four division channels of the third stage 333, so that the eight liquid outlets 32 can deliver liquid almost uniformly, and the degree of moistening of each part of the roller brush 2 can be kept generally constant.

[0050] Referring to the Fig. 6 and Fig.7 In one embodiment of the present disclosure, the reversing buffer zone 34 comprises a liquid storage zone 344 located below a division channel of a higher stage, which is configured to connect division channels of a lower stage located on both sides of the division channel of the higher stage. The underside of the liquid storage zone 344 is configured to be lower than the division channel of the lower stage, and the upper side of the liquid storage zone 344 is configured to be no higher than the division channel of the lower stage, which causes the reversing buffer zone 34 to be lowered relative to the division channel of the lower stage.The fluid in the division channel of the higher stage is directed such that it flows into the fluid storage zone 344, and when the fluid level in the fluid storage zone 344 reaches a predetermined height, the fluid flows to the division channels of the lower level on both sides. Arranging the fluid storage zone 344 below the division channel of the higher stage is advantageous for reducing the horizontal kinetic energy in the fluid storage zone 344 by utilizing gravity. As shown in . Fig.As shown in Figure 6, and using the first buffer zone 341 as an example, a liquid storage zone 344 is arranged below the division channel of the first stage 331, and the height of the top of the liquid storage zone 344 is no higher than that of the division channel of the second stage 332. After entering the liquid storage zone 344, liquid from the division channel of the first stage 331 does not flow directly into the division channel of the second stage 332 under the influence of gravity, but accumulates in the liquid storage zone 344 until the liquid level rises to the height of the division channel of the second stage 332, and then the liquid can flow into the division channels of the second stage 332 on both sides of the division channel of the first stage 331. The liquid exhibits kinetic energy to the left (referring to the viewing direction in Figure 6). Fig.6) in the division channel of the first stage 331. In the liquid storage zone 344, the liquid is buffered and the kinetic energy is reduced accordingly, so that the liquid can be diverted evenly to the division channel of the second stage 332.

[0051] As in Fig.As shown in Figure 7, and using the second buffer zone 342 as an example, a liquid storage zone 344 is arranged below the division channel of the second stage 332, and the height of the top of the liquid storage zone 344 is no higher than that of the division channel of the third stage 333. After entering the liquid storage zone 344, liquid from the division channel of the second stage 332 does not flow directly into the division channel of the third stage 333, but accumulates in the liquid storage zone 344 until the liquid level rises to the height of the division channel of the third stage 333, and then the liquid can flow into the division channels of the third stage 333 on both sides of the division channel of the second stage 332. The liquid exhibits kinetic energy to the left (referring to the viewing direction in Figure 7). Fig.7) in the division channel of the second stage 332. In the liquid storage zone 344, the liquid is buffered and the kinetic energy is reduced accordingly, so that the liquid can be diverted evenly to the division channel of the third stage 333.

[0052] Referring to Fig.In one embodiment of the present disclosure, an inlet buffer zone 343 is provided at one end of the connecting channel 334, and the upper surface of the inlet buffer zone 343 is no higher than the division channel of the first stage 331. After entering the inlet buffer zone 343, the liquid from the connecting channel 334 does not flow directly into the division channel of the first stage 331, but accumulates in the inlet buffer zone 343 until the liquid level rises to the height of the division channel of the first stage 331, and then the liquid can flow into the division channel of the first stage 331. The liquid has kinetic energy to the right (referring to the viewing direction in the Fig.5) in the connecting channel 334. In the inlet buffer zone 343, the liquid is buffered, and the kinetic energy is reduced accordingly, so that the liquid can be distributed evenly to the left and right sides of the dividing channel of the first stage 331.

[0053] According to the present disclosure, a reversing buffer zone 34 is arranged between adjacent stages of division channels, allowing upstream fluid to accumulate and briefly remain in the reversing buffer zone 34. This reduces the fluid's kinetic energy in advance of each division and prevents the fluid's inertia from being constantly maintained and accumulating in a division channel of a higher stage. During each division, the fluid, now freed from its kinetic energy, can be evenly distributed to division channels of a lower stage on both sides as the fluid level steadily rises, ensuring that each fluid outlet 32 ​​maintains a relatively uniform fluid output.

[0054] Referring to the Fig. 6 and Fig.In one embodiment of the present disclosure, the reversing buffer zone 34 further comprises a first guide rib 3451 and a second guide rib 3452. The first guide rib 3451 and the second guide rib 3452 are configured to form a reversing channel 345, which extends from a division channel of a higher stage in one direction of the liquid storage zone 344. The liquid in the division channel of the higher stage is guided such that it flows through the reversing channel 345 into the liquid storage zone 344. The width of the liquid storage zone 344 is configured to be greater than the width of the reversing channel 345, so that when liquid flows from the reversing channel 345 into the liquid storage zone 344, the flow rate of the liquid decreases, which helps to eliminate the kinetic energy of the liquid.

[0055] As in Fig.As shown in Figure 6, and using the first buffer zone 341 as an example, in order to flow from the first-stage dividing channel 331 into the second-stage dividing channel 332, the fluid must first flow horizontally (in the first-stage dividing channel 331), make a turn in the vertical direction (in the turning channel 345), make a turn in the horizontal direction (in the fluid storage zone 344), then make an upward turn (with the fluid level rising in the fluid storage zone 344), and finally make a turn in the horizontal direction (in the second-stage dividing channel 332). After several changes in the flow direction, the horizontal kinetic energy of the fluid along the initial flow direction in the first-stage dividing channel 331 can be eliminated as much as possible, so that the fluid can flow uniformly into the second-stage dividing channel 332.

[0056] As in Fig. As shown in Figure 7, and using the second buffer zone 342 as an example, in order to flow from the division channel of the second stage 332 into the division channel of the third stage 333, the fluid must first flow horizontally (in the division channel of the second stage 332), make a turn in the vertical direction (in the turning channel 345), make a turn in the horizontal direction (in the fluid storage zone 344), make an upward turn (whereby the fluid level in the fluid storage zone 344 rises), and finally make a turn in the horizontal direction (in the division channel of the third stage 333). After several changes in the flow direction, the horizontal kinetic energy of the fluid along the initial flow direction in the division channel of the second stage 332 can be eliminated as much as possible, so that the fluid can flow uniformly into the division channel of the third stage 333.

[0057] In a particular embodiment of the present disclosure, as in Fig.As shown in Figure 6, in the least upstream reversing buffer zone 34, one end of the reversing channel 345, which adjoins the liquid storage zone 344, is designed such that it is lower in the vertical direction than the top of the liquid storage zone 344. If the end of the reversing channel 345, which adjoins the liquid storage zone 344, is arranged such that it is higher than the top of the liquid storage zone 344 or is at the same level, then, if the liquid storage zone 344 is filled with liquid, no further liquid will flow into the liquid storage zone 344, but will flow directly into the dividing channel of the lower stage after it has flowed out of the reversing channel 345, thus failing to achieve the effect of kinetic energy removal and therefore not adequately buffering the liquid.According to the present disclosure, the first guide rib 3451 and the second guide rib 3452 are designed such that they extend partially into the liquid storage zone 344, whereby the liquid in the turning channel 345 can flow to a position that is lower than the highest liquid level in the liquid storage zone 344, so that the exchange of the liquid in the liquid storage zone 344 can be ensured, thereby ensuring that the liquid can be continuously buffered and thus avoiding the problem of uneven flow due to the effect of kinetic energy.

[0058] Furthermore, the upstream fluid has high kinetic energy, indicating a greater need for buffering. Therefore, the reversing channel 345 can extend into the fluid storage zone 344 in the least upstream reversing buffer zone 34. For example, in this embodiment, the end of the reversing channel 345 adjacent to the fluid storage zone 344 has, in the Fig. The first buffer zone 341 shown in section 6 has a considerably lower height than the top of the liquid storage zone 344. As shown in Fig.As shown in Figure 7, the end of the reversing channel 345, which adjoins the liquid storage zone 344, can, in principle, be located at the same height as the top of the liquid storage zone 344 in the downstream second buffer zone 342. This is because the kinetic energy of the downstream liquid has largely been consumed and the buffer requirement is relatively low. Furthermore, the space in the downstream reversing buffer zone 34 is small, so the reversing channel 345 can be positioned appropriately based on the available space.

[0059] Referring to the Fig. 6 and Fig.In one embodiment of the present disclosure, a barrier wall 35 is provided at one end of a division channel of a higher stage. In one direction of extension of the division channel of the higher stage, one end of the turning channel 345 is configured such that it is connected to the division channel of the higher stage at a position offset from the barrier wall 35 in order to form a liquid buffer zone 351 in a position between the barrier wall 35 and the turning channel 345 in the division channel of the higher stage. The liquid buffer zone 351 is arranged in one direction of extension of the division channel of the higher stage. With reference to the viewing direction of Fig.6. Using the first buffer zone 341 as an example, a barrier wall 35 is arranged at the left end of the first stage dividing channel 331, and the second guide rib 3452 is offset vertically to the right of the barrier wall 35, forming a liquid buffer zone 351 at the left end of the first stage dividing channel 331. Liquid in the first stage 331 dividing channel can be stopped by the barrier wall 35 if it flows to the left, which is advantageous for reducing the horizontal kinetic energy of the liquid. The liquid flows back into the liquid buffer zone 351 and enters the turning channel 345 with less kinetic energy.

[0060] Referring to the perspective of Fig.7. Using the second buffer zone 342 as an example, a barrier wall 35 is provided at the left end of the division channel of the second stage 332, and the second guide rib 3452 is offset vertically to the right of the barrier wall 35, thereby forming a liquid buffer zone 351 at the left end of the division channel of the second stage 332. Liquid in the division channel of the second stage 332 can be stopped by the barrier wall 35 if it flows to the left, which is advantageous for reducing the horizontal kinetic energy of the liquid. The liquid flows back into the liquid buffer zone 351 and enters the turning channel 345 with less kinetic energy.

[0061] If the fluid buffer zone 351 is not provided, the upstream fluid, with greater kinetic energy, will make a U-turn in the turning channel 345 after impacting the channel wall. In this case, the uncontrollability of the fluid's kinetic energy is increased, and the fluid may exhibit kinetic energy in various directions. This can prevent the fluid from flowing along its intended path in the fluid flow channel 33 (i.e., entering the fluid storage zone 344 for buffering along the turning channel 345 and then, after the fluid level rises, flowing into the division channel of a lower stage). The unbuffered fluid cannot flow uniformly to the left and right into the division channels of the lower stage.According to the present disclosure, a liquid buffer zone 351 is provided at the end of the division channel of the higher stage, so that the liquid in the division channel of the higher stage can unify the direction of kinetic energy by bouncing against the barrier wall 35 and flowing back before entering the turning channel 345, which helps to distribute the flow evenly and maintain a basically uniform liquid output at each outlet 32.

[0062] Referring to Fig.In one embodiment of the present disclosure, the height of the upstream reversing buffer zone 34 is greater than the height of the downstream reversing buffer zone 34 and / or the height of the most downstream reversing buffer zone 34 is less than the height of the reversing buffer zone 34 at other positions. It should be noted that the height of the reversing buffer zone 34 comprises a depth of the liquid storage zone 344 and an extent length of the reversing channel 345. That is, the height of the reversing buffer zone 34 can be represented by the depth of the liquid storage zone 344 and the extent length of the reversing channel 345. The deeper the fluid storage zone 344 and the longer the reversing channel 345, the greater the height of the reversing buffer zone 34. For example, in this embodiment only three stages of dividing channels are provided, so there are only two reversing buffer zones 34, i.e. the first buffer zone 341 and the second buffer zone 342.The height of the first buffer zone 341 is greater than that of the second buffer zone 342. It is understood that as the division progresses, the amount of fluid entering each division channel gradually decreases, and after buffering at each division, the kinetic energy of the fluid will also gradually decrease. It is evident that the kinetic energy of the upstream fluid is highest, so the upstream reversing buffer zone 34 must be located at a greater height to enhance the buffering effect. When the fluid flows downstream, its kinetic energy has already been largely attenuated. Therefore, the downstream reversing buffer zone 34 can be located at a lower height.On the one hand, the space occupied by the furthest downstream reversing buffer zone 34 is reduced, and on the other hand, the uniformity of the downstream dividing channel is improved, thereby improving the liquid storage capacity of the liquid storage zone 344.

[0063] In other embodiments, more stages of dividing channels can be provided in the liquid outlet plate 3. For example, in the case of four stages of dividing channels, the height of the most upstream reversing buffer zone 34 can be set to the maximum, the height of the midstream reversing buffer zone 34 can be set to an average value, and the height of the downstream reversing buffer zone 34 can be set to the minimum. Alternatively, only the height of the most downstream reversing buffer zone 34 can be set to the minimum, while the heights of the upstream and midstream reversing buffer zones 34 can be the same.This is because the downstream reversing buffer zone 34 has to buffer less kinetic energy of the fluid than the upstream reversing buffer zone 34. Therefore, a smaller reversing buffer zone 34 must be provided to meet the buffering requirement, thus reducing the size of the fluid outlet plate 3. Furthermore, the upstream fluid has greater kinetic energy and requires more effective buffering. Due to the height of the dividing channel itself, more space is available upstream to accommodate a larger reversing buffer zone. Thus, the size of the fluid outlet plate 3 is reduced while simultaneously meeting the buffering requirements at different stages.

[0064] Referring to Fig.4 In one embodiment of the present disclosure, the division channel of the third stage 333 and the second buffer zone 342 are configured such that they lie within the extension area of ​​the first buffer zone 341 in the axial direction of the roller brush 2. Referring to Fig.In the present disclosure, the connecting channel 334 is designed to be at the same height as the dividing channel of the second stage 332, and the inlet buffer zone 343 is designed to lie within the extension area of ​​the first buffer zone 341 in the axial direction of the roller brush 2. This ensures a compact arrangement of the three stages of dividing channels and the connecting channels. In contrast to the conventional liquid outlet plate 3, a reversing buffer zone 34 (comprising at least a first buffer zone 341 and a second buffer zone 342) and an inlet buffer zone 343 are provided, which occupy space in the vertical direction. However, in the present disclosure, the layout of the liquid path is optimized such that the dividing channel lies within the lateral extension area of ​​the reversing buffer zone 34 without requiring additional vertical space.The size of the liquid outlet plate 3 can be exactly the same as that of the conventional liquid outlet plate 3, which is advantageous for improving the adaptability of the liquid outlet plate 3. Users can arrange the liquid outlet plate 3 of this disclosure in the space for the existing liquid outlet component without having to replace the cleaning device of the entire machine. Furthermore, since the kinetic energy of the downstream liquid is lower than that of the upstream liquid, the size of the downstream second buffer zone 342 can be smaller than that of the upstream first buffer zone 341, and the height difference between the first-stage dividing channel 331 and the third-stage dividing channel 333 is greatest.In view of the need to eliminate the kinetic energy at different positions and the space occupied, the division channel of the third stage 333 and the second buffer zone 342 are therefore designed such that they lie within the extension area of ​​the first buffer zone 341 in the axial direction of the roller brush 2, and the inlet buffer zone 343 is designed such that it lies within the extension area of ​​the first buffer zone 341 in the axial direction of the roller brush 2.

[0065] Referring to the Fig. 8 and Fig.In one embodiment of the present disclosure, a liquid-dividing element 36 and guide elements are provided at the position corresponding to the liquid outlet 32 ​​on the liquid outlet plate 3. The guide elements are configured such that they extend from a position adjacent to the liquid outlet 32 ​​in a spaced-apart manner, and at least two guide points 370 are formed at an end remote from the liquid outlet 32 ​​with a spaced-apart distribution. The liquid outlet plate 3 is usually mounted perpendicularly to the bottom brush housing 1, so that the liquid can flow from upstream to downstream in the liquid outlet plate 3 due to the effect of gravity.The liquid outlet 32 ​​on the liquid outlet plate 3 is configured to face the roller brush 2, and the liquid must change its flow direction to flow out of the liquid outlet 32 ​​so that it is perpendicular to the dividing channel or flows at a large angle to it. The liquid flowing out of the liquid outlet 32 ​​is guided so that it flows along the guide elements on both sides after being divided by the liquid dividing element 36. There are several liquid outlets 32, and a liquid dividing element 36 is provided at a corresponding position of each liquid outlet 32. The liquid from the liquid outlet 32 ​​impinges on the inner wall of the liquid dividing element 36, thereby diverting the liquid to both sides of the liquid dividing element 36.

[0066] In a conventional liquid outlet plate 3, a ribbed structure is usually provided for dividing the liquid. However, due to stress, the liquid may re-merge after passing the rib and not be completely divided into two liquid streams. According to the present disclosure, a guide element is further provided, which allows the liquid from the liquid outlet 32 ​​to flow in opposite directions after being diverted by the liquid dividing element 36. Under the influence of the guide element, the liquid flows to two guide points 370 without merging, thereby achieving complete division and thus improving the distribution effect of the liquid outlet plate 3.

[0067] As in Fig.As shown in Figure 8, the guide element comprises, in particular, guide ribs 372 located on opposite sides of the liquid-dividing element 36. The liquid-dividing element 36 is configured such that it extends upwards between two guide ribs 372 to a position higher than the liquid outlet 32, and the guide rib 372 is configured such that it extends obliquely in the axial direction of the roller brush 2. It is understood that the ends of the guide ribs 372 on both sides, furthest from the liquid outlet 32, form two spaced-apart guide points 370 on the liquid outlet plate 3. The guide element further comprises a guide surface 371 located on opposite sides of the liquid-dividing element 36 and connected to the underside of the guide rib 372.The guide surface 371 is designed such that it gradually inclines in the vertical direction from the position adjacent to the liquid outlet 32 ​​towards the direction of the roller brush 2. As shown in . Fig. As shown in Figure 8, two guide ribs 372 and two guide surfaces 371 are arranged symmetrically on both sides of the liquid-dividing section 36 to guide and receive the two divided liquid flows. The two liquid flows can flow away from each other along the guide ribs 372 on both sides and spread out onto the guide surfaces 371. Due to the inclination of the guide surface 371 towards the roller brush 2, the liquid will not accumulate on the guide surface 371 but can flow naturally towards the roller brush 2 under the influence of gravity.

[0068] Referring to Fig.In one embodiment of the present disclosure, a dividing rib 38 is provided on the guide surface 371 at a position between adjacent liquid outlets 32. The dividing rib 38 is configured such that it extends from an end adjacent to the liquid outlet 32 ​​to an edge of the liquid outlet plate 3. It is understood that adjacent liquid outlets 32 discharge the liquid simultaneously and divide it into four liquid streams by their respective liquid dividing elements 36. The right liquid stream of the left liquid outlet 32 ​​and the left liquid stream of the right liquid outlet 32 ​​will flow close to each other under the influence of the guide ribs 372 and guide surfaces 371. If the dividing rib 38 is not provided, the liquid streams on both sides will merge, which is not conducive to the distribution of the liquid.According to the present disclosure, the separation of the liquid outlets 32 is achieved by arranging a dividing rib 38 such that the liquid flows from the outlets 32 do not merge after the division, but can flow separately on their respective guide surfaces 371, thereby effectively improving the distribution effect of the liquid outlet plate 3.

[0069] In one embodiment of the present disclosure as in Fig. As shown in Figure 1, the floor brush housing 1 is provided with a suction opening 5, which can be connected to a dirty water container on the body via a suction channel such that the cleaning device can suck dirt from the suction opening 5 into the dirty water container. As shown in Fig.As shown in Figure 2, a wiper plate 4 is provided below the liquid outlet plate 3, and the wiper plate 4 is designed to have an interference fit with the roller brush 2. It should be noted that the wiper plate 4 can be considered part of the liquid outlet component. The wiper plate 4 is attached to the liquid outlet component in such a way that it forms an assembly with the liquid outlet component, or the wiper plate 4 can be a component independent of the liquid outlet component. Referring to the viewing direction of Fig.During normal operation, the roller brush 2 can rotate clockwise, allowing it to pass over the scraper plate 4 before passing through the liquid outlet component. The scraper plate 4 removes dirt from the roller brush 2, and this dirt is drawn in by a vacuum at the suction opening 5 located below the scraper plate 4 (the vacuum is generated by a suction motor, which may be located on the body). This prevents excessive dirt from adhering to the surface of the roller brush 2 and thus improves its cleaning performance. Once the dirt has been removed from the roller brush 2, the liquid outlet component sprays clean cleaning medium onto the roller brush 2.The roller brush 2, which is soaked with the clean cleaning medium, rotates again to come into contact with the work surface to clean the work surface.

[0070] Referring to Fig.In embodiment 10, one side of the scraper plate 4 near the roller brush 2 is designed such that it extends beyond the edge of the liquid outlet plate 3, and liquid flowing downwards from the guide element is directed so that it flows through the scraper plate 4 (in particular the upper surface of the scraper plate 4) to the roller brush 2. In this embodiment, the scraper plate 4 has the function of receiving and directing the liquid. Under the guiding action of the guide rib 372 and the guide surface 371, the liquid flows onto the scraper plate 4 and is then directed from the scraper plate 4 to the roller brush 2. Due to the interference fit between the scraper plate 4 and the roller brush 2, no gap is formed between them, so that the liquid can be directed completely onto the roller brush 2 without dripping onto the working surface.

[0071] Referring to Fig.11. The distance between an outer edge of the wiper plate 4 and a position between two guide points 370 is greater than the distance between the dividing rib 38 and the outer edge of the wiper plate 4. Because the outer edge of the wiper plate 4 is designed as a straight line, the aforementioned difference in distance results in an exposed zone corresponding to the position between the two guide points 370 on the wiper plate 4 being larger than the zone corresponding to the dividing rib 38 on the wiper plate 4. In particular, the wiper plate 4 is partially covered by the guide surface 371, while the uncovered exposed zone 41 can perform a guiding function. In a particular embodiment, the wiper plate 4 can be made of hydrophilic materials such as metals. Due to the hydrophilicity of metals, the liquid is easily and evenly spread on the metal wiper plate 4.Furthermore, the exposed zones differ at various positions on the wiper plate 4, and the liquid is more likely to flow to larger exposed zones on the wiper plate 4. The distance between the dividing rib 38 and the outer edge of the wiper plate 4 is relatively small, and the corresponding exposed zone of the wiper plate 4 is also relatively small. Therefore, the liquid flowing downwards from the position of the dividing rib 38 is more likely to be diverted to other zones on the wiper plate 4. The distance between the outer edge of the wiper plate 4 and a position between the two guide points 370 is relatively large, and the corresponding exposed zone of the wiper plate 4 is also relatively large, so the liquid is more likely to be diverted to the position between the two guide points 370 on the wiper plate 4.

[0072] Furthermore, the distance from the dividing rib 38 to a central position of the two guide points 370 and to the outer edge of the wiper plate 4 gradually increases, and the corresponding exposed zone of the wiper plate 4 also gradually increases. Due to the dividing effect of the two guide ribs 372, almost no liquid flows to the wiper plate 4 in the position between the two guide points 370. The position corresponding to the dividing rib 38 must receive liquid from the liquid outlets 32 on both sides, so a large quantity of liquid will flow to the wiper plate 4. For a zone between the guide point 370 and the dividing rib 38 (i.e., a zone corresponding to the guide surface 371), there will be a relatively average quantity of liquid flowing to the wiper plate 4.Based on this, according to the present disclosure, the area of ​​the exposed zone 41 of the wiper plate 4 is determined such that it is inversely proportional to the liquid flow rate, i.e., the area of ​​the exposed zone 41 is larger the lower the flow rate, and the area of ​​the exposed zone 41 is smaller the higher the flow rate. The liquid in a zone with a high flow rate (corresponding to the position of the dividing rib 38) can flow to a larger area of ​​the exposed zone 41 (corresponding to the position between the two guide points 370) after reaching the wiper plate 4, which promotes the uniform distribution of the liquid on the wiper plate 4 and helps to make the moisture more uniform at different positions on the roller brush 2.

[0073] According to the present disclosure, a liquid outlet component is further provided, comprising a liquid outlet plate 3, a liquid inlet 31 and a liquid outlet 32 ​​arranged on the liquid outlet plate, and a liquid flow channel 33 connecting the liquid inlet 31 and the liquid outlet 32. The liquid flow channel 33 comprises at least two stages of division channels arranged at different heights and connected sequentially. A reversing buffer zone 34 is arranged at a position where two adjacent stages of division channels are connected, and the liquid is directed such that it flows into a division channel of a lower stage after changing direction at least twice in the reversing buffer zone 34.For the specific structure and principle of the liquid outlet component in the present disclosure, reference can be made to the above-mentioned liquid outlet component of the cleaning device without repeating it here. Second embodiment

[0074] The following two trials are conducted, using the cleaning device provided in the first embodiment for the test group and a conventional cleaning device without a reversing buffer zone for the control group. Experiment 1: Moisture test on segments of a roller brush

[0075] The cleaning devices of the control and experimental groups are both fitted with the same type of new roller brushes for the experiment to eliminate the influence of differing brush absorbency. Lines are marked on each of the two roller brushes to divide it evenly into five segments. Specifically, the five segments, running from the brush motor end to the handle end, are designated segments A, B, C, D, and E. In this experiment, the difference in the uniformity of liquid discharge between two liquid outlet plates is determined by separately measuring the moisture content of each segment of each roller brush.

[0076] The experimental procedure comprises: measuring the moisture content in each segment of the dry roller brush using a moisture meter; mounting the roller brush onto the cleaning device and operating the cleaning device for 5 minutes; removing the roller brush and remeasuring the moisture content in each segment using the moisture meter; and comparing the initial and subsequent measurements to determine the differences. Both the control group and the experimental group underwent five trials each. Table 1: Moisture test results for the roller brush segments in the control group Number of times Segment A Segment B Segment C Segment D Segment E 1 Dry 1,1 1 1,7 1 1,4 Roller brush Operation for 5 minutes 12,4 9,8 13,9 12 11,4 Difference 11,3 8,8 12,2 11 10 2 Dry roller brush 1,1 1,2 1,7 1,2 1,6 Operation for 5 minutes 13,4 8,1 13,7 10 10,8 Difference 12,3 6,9 12 8,8 9,2 3 Dry roller brush 1,3 1 1,7 1,2 1,3 Operation for 5 minutes 12,1 8,4 14,5 11 9,5 Difference 10,8 7,4 12,8 9,8 8,2 4 Dry roller brush 1,2 1 1,7 1 1,6 Operation for 5 minutes 12,5 7,9 14,4 11,3 11,5 Difference 11,3 6,9 12,7 10,3 9,9 5 Dry roller brush 1,3 1,2 1,8 1,4 2 Operation for 5 12,7 7,6 15,4 12 10,6 minutes Difference 11,4 6,4 13,6 10,6 8,6 Table 2: Moisture test results for the roller brush segments in the test group Number of times Segment A Segment B Segment C Segment D Segment E 1 Dry roller brush 1 1,1 1,8 1,1 1,7 Operation for 5 minutes 12,5 12 14,2 13,1 14,6 Difference 11,5 10,9 12,4 12 12,9 2 Dry roller brush 0,7 0,9 1,6 1 1,5 Operation for 5 minutes 14,6 13,6 16,8 15,8 15,8 Difference 13,9 12,7 15,2 14,8 14,3 3 Dry roller brush 1,1 1 1,7 1,3 2,1 Operation for 5 minutes 10,4 11,6 14,2 12 13,2 Difference 9,3 10,6 12,5 10,7 11,1 4 Dry 1 0,9 1,9 1,3 1,9 Roller brush Operation for 5 minutes 12,8 12,5 15,5 12,3 14,4 Difference 11,8 11,6 13,6 11 12,5 5 Dry roller brush 1,1 1,1 1,9 1,1 1,9 Operation for 5 minutes 15,6 13,9 17,8 13,3 15,4 Difference 14,5 12,8 15,9 12,2 13,5

[0077] The test results are presented in Table 1, Table 2, Fig. 12 and Fig.Figure 13 shows that a coefficient of variation (0.20) of the differences in moisture content of various segments of the roller brush in the control group after five minutes of operation is greater than that (0.13) of the roller brush after five minutes of operation in the experimental group. It is evident that the cleaning device and the liquid outlet components provided in the present disclosure are able to distribute water more uniformly and that the moisture content of each segment of the roller brush is more uniform. Experiment 2: Flow rate test for liquid outlets

[0078] The liquid outlet components of the cleaning device in both the control and experimental groups are equipped with eight liquid outlets. In this experiment, the liquid outlet volume from each outlet of the two liquid outlet components is measured separately to determine the difference in the uniformity of the liquid outlet between the two outlet plates. The experimental procedure includes: increasing the flow rate and flushing for five seconds to ensure that all liquid flow paths are clear and that all eight outlets are dispensing liquid normally; conducting the experiment at a flow rate of 30 ml / min and recording the liquid outlet volume from each outlet for one minute. The control group and the experimental group each undergo five trials. Table 3: Flow rate test results for liquid outlets in the control group Number of times Outlet 1 Outlet 2 Outlet 3 Outlet 4 Outlet 5 Outlet 6 Outlet 7 Outlet 8 Total water volume 1 3,5 2 2,5 3 0,5 2 6,5 2,5 22,5 2 2 2,5 1,5 5 1 3,5 0 7 22,5 3 2,5 2,5 2 4 2 3 2 5 23 4 3 3 3 2,5 2,5 3 1,5 3,5 22 5 5,5 1 2,5 3,5 0 5 2 5 24,5 Table 4: Flow rate test results for liquid outlets in the test group Number of times Outlet 1 Outlet 2 Outlet 3 Outlet 4 Outlet 5 Outlet 6 Outlet 7 Outlet 8 Total water volume 1 3 4 3 3 2,5 3 3 2,5 24 2 3 3,5 4 2 5 1 3 4,5 26 3 2,5 3 3 2,5 2,5 2,5 2,5 3 21,5 4 3,5 3 3 2,5 3,5 2 3 3 23,5 5 2 4 3 3 2 3 2,5 4 23,5

[0079] The test results are presented in Table 3, Table 5 and Fig. 14 and Fig. Figure 15 shows that the difference in water output volume between the liquid outlets of the liquid outlet plate in the control group is greater than the difference between the liquid outlets of the liquid outlet plate in the experimental group. It is evident that the cleaning device and the liquid outlet components provided in the present disclosure are able to distribute the flow more evenly and that the liquid output from each liquid outlet is more uniform. Application scenario

[0080] The cleaning device is a handheld floor scrubber comprising a floor brush component. The floor brush component comprises a floor brush housing 1, a roller brush 2, and a liquid outlet component, the liquid outlet component comprising a liquid outlet plate 3. A liquid flow channel 33 is provided in the liquid outlet plate 3, comprising three stages of division channels. In the direction from the liquid inlet 31 to the liquid outlet 32, the three stages of division channels are successively designated as the first-stage division channel 331, the second-stage division channel 332, and the third-stage division channel 333. A first buffer zone 341 is provided between the first-stage division channel 331 and the second-stage division channel 332, and a second buffer zone 342 is provided between the second-stage division channel 332 and the third-stage division channel 333.

[0081] The fluid flow channel 33 further comprises a connecting channel 334 for connecting the fluid inlet 31 to the first-stage dividing channel 331, and an inlet buffer zone 343 is provided at a connection point between the connecting channel 334 and the first-stage dividing channel 331. The connecting channel 334 is connected via the inlet buffer zone 343 to a central portion of the first-stage dividing channel 331. Each of the two ends of the first-stage dividing channel 331 is connected via a corresponding first buffer zone 341 to a central portion of a corresponding second-stage dividing channel 332, meaning that there are two second-stage 332 dividing channels. Each of the two ends of the second-stage division channel 332 is connected by a corresponding second buffer zone 342 to a middle part of a corresponding third-stage division channel 333, meaning that there are four third-stage division channels 333.

[0082] The fluid flows through the fluid inlet 31 into the connecting channel 334 and enters the inlet buffer zone 343 for buffering. The fluid then enters the first stage's dividing channel 331 from the central section and is diverted evenly to the left and right sides. The fluid flows to the left and right sides within the first stage's dividing channel 331, and when it reaches the ends on both sides, it can flow into the first buffer zone 341 for buffering under the influence of gravity. If the fluid accumulates in the fluid storage zone 344 of the first buffer zone 341 until the fluid level rises to the height of the second stage's dividing channel 332, the fluid is diverted evenly into the second stage's dividing channels 332 on both sides of the first stage's dividing channel 331.When the fluid flows to the end of the division channel of the second stage 332, it can flow into the second buffer zone 342 for buffering under the influence of gravity. If the fluid accumulates in the fluid storage zone 344 of the second buffer zone 342 until the fluid level rises to the height of the division channel of the third stage 333, the fluid is diverted evenly into the division channels of the third stage 333 on both sides of the division channel of the second stage 332.

[0083] The division process described above divides the liquid evenly into eight liquid streams. Eight liquid outlets 32 can be distributed at equal intervals on the liquid outlet plate 3, and essentially equal quantities of liquid can flow from the eight liquid outlets 32 to uniformly moisten different surfaces of the roller brush 2. A liquid dividing element 36 and guide elements are also provided at a corresponding position of each liquid outlet 32. The liquid flowing from the liquid outlet 32 ​​is guided such that it flows along the guide elements on both sides after being divided by the liquid dividing element 36, thereby improving the distribution effect of the liquid outlet plate 3. The liquid flowing downwards from the guide elements will flow onto the wiper plate 4 and from the wiper plate 4 will be directed to the roller brush 2.The liquid can flow to a larger area of ​​the exposed zone 41 on the scraper plate 4, which is advantageous for the even distribution of the liquid on the scraper plate 4 and helps to make the moisture more uniform at different positions on the roller brush 2.

[0084] Various embodiments of the present disclosure have been described above, which are exemplary and not exhaustive, and the present disclosure is not limited to the embodiments described above. Without departing from the scope of protection and spirit of the various described embodiments, numerous variations and modifications are apparent to a person skilled in the art. The choice of terms used herein is intended to best explain the principles, practical applications, or technological improvements of the embodiments or to enable another person skilled in the art to understand the various embodiments of the present disclosure. The scope of protection of the present disclosure is limited by the claims. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited non-patent literature

[0000] 202411849986.X entitled “CLEANING DEVICE”, which was issued on December 14, 2024

[0001]

Claims

[1] Cleaning device comprising a floor brush component, wherein the floor brush component comprises: a floor brush housing (1); a roller brush (2), wherein the roller brush (2) is rotatably connected to the floor brush housing (1) and is designed to clean a work surface; and a liquid outlet component arranged on the bottom brush housing (1), wherein the liquid outlet component comprises a liquid outlet plate (3), a liquid inlet (31) and a liquid outlet (32) arranged on the liquid outlet plate (3), and a liquid flow channel (33) connecting the liquid inlet (31) and the liquid outlet (32), wherein a liquid dividing element (36) and guide elements are provided on the liquid outlet plate (3) at a position corresponding to the liquid outlet (32), and the guide elements are designed such that they extend from a position adjacent to the liquid outlet (32) and form guide points (370) at an end remote from the liquid outlet (32); and The liquid flowing out of the liquid outlet (32) is directed in such a way that it flows along the guide parts after it has been divided by the liquid dividing part (36). [2] Cleaning device according to claim 1, wherein the guide parts are arranged on both sides of the liquid dividing part (36) and the guide parts are designed such that they extend from a position adjacent to the liquid outlet (32) in a spaced-apart manner and form at least two spaced-apart guide points (370) at an end away from the liquid outlet (32). [3] Cleaning device according to claim 1, wherein the guide parts comprise guide ribs (372) located on opposite sides of the liquid dividing part (36); wherein each of the guide ribs (372) is configured such that it extends obliquely in an axial direction of the roller brush (2), and the ends of the guide ribs (372) furthest from the liquid outlet (32) form two spaced-apart guide points (370) on the liquid outlet plate (3). [4] Cleaning device according to claim 3, wherein the guide parts further comprise a guide surface (371) which is connected to an underside of the guide ribs (372), wherein the guide surface (371) is located on another side of the guide ribs (372) in relation to the liquid dividing part (36) and the guide surface (371) is designed such that it gradually inclines in a vertical direction from a position adjacent to the liquid outlet (32) towards a direction of the roller brush (2). [5] Cleaning device according to claim 4, wherein a dividing rib (38) is provided at a position between adjacent liquid outlets (32) on the guide surface (371) and the dividing rib (38) is designed such that it extends from an end adjacent to the liquid outlet (32) to an edge of the liquid outlet plate (3). [6] Cleaning device according to claim 4, wherein the liquid dividing part (36) is designed such that it extends upwards between two guide ribs (372) to a position which is higher than the liquid outlet (32). [7] Cleaning device according to claim 5, wherein a scraper plate (4) is provided below the liquid outlet plate (3) and the scraper plate (4) is designed such that it has an interference fit with the roller brush (2); wherein a side of the scraper plate (4) near the roller brush (2) is designed such that it extends beyond the edge of the liquid outlet plate (3), and the liquid flowing downwards from the guide elements is directed such that it flows through the scraper plate (4) to the roller brush (2). [8] Cleaning device according to claim 7, wherein a distance between an outer edge of the scraper plate (4) and a position between two guide points (370) is greater than a distance between the dividing rib (38) and the outer edge of the scraper plate (4). [9] Cleaning device according to claim 7, wherein an exposed area on the wiper plate (4) corresponding to a zone between two guide points (370) is larger than an exposed area on the wiper plate (4) corresponding to a zone of the dividing rib (38). [10] Cleaning device according to claim 1, wherein the liquid flow channel (33) comprises at least two stages of division channels located at different heights and connected successively, and liquid flows in two different directions when it flows into each of the division channels; wherein a reversing buffer zone (34) is provided at a position where two adjacent stages of the division channels are connected, and the liquid is directed such that it flows into a division channel of a lower stage after changing direction of flow at least twice in the reversing buffer zone (34). [11] Cleaning device according to claim 10, wherein the reversing buffer zone (34) comprises a liquid storage zone (344) located below a division channel of a higher stage, and the liquid storage zone (344) is configured such that it is connected to two division channels of a lower stage located on two sides of it; wherein a lower side of the liquid storage zone (344) is configured such that it is lower than a division channel of a lower stage, and an upper side of the liquid storage zone (344) is configured such that it is not higher than the division channel of the lower stage; and wherein a liquid is directed in a division channel of a higher stage such that it flows into the liquid storage zone (344), and when a liquid level in the liquid storage zone (344) reaches a predetermined height, the liquid flows to the division channels of the lower stage on both sides of the division channel of the higher stage. [12] Cleaning device according to claim 11, wherein the reversing buffer zone (34) further comprises a first guide rib (3451) and a second guide rib (3452); wherein the first guide rib (3451) and the second guide rib (3452) are configured such that they form a reversing channel (345) which is configured such that it extends from the division channel of the higher stage towards a direction of the liquid storage zone (344), and the liquid in the division channel of the higher stage is guided such that it flows through the reversing channel (345) into the liquid storage zone (344). [13] Cleaning device according to claim 12, wherein in the least upstream reversing buffer zone (34) an end of the reversing channel (345) which adjoins the liquid storage zone (344) is designed such that it is lower in a vertical direction than the top of the liquid storage zone (344). [14] Cleaning device according to claim 12, wherein a barrier wall (35) is provided at one end of the division channel of the higher stage and in an extension direction of the division channel of the higher stage, and an end of the turning channel (345) is configured such that it is connected to the division channel of the higher stage at a position offset from the barrier wall (35) in order to form a liquid buffer zone (351) in a zone between the barrier wall (35) and the turning channel (345) in the division channel of the higher stage, and wherein the liquid buffer zone (351) lies in an extension path of the division channel of the higher stage. [15] Cleaning device according to claim 10, wherein the liquid flow channel (33) comprises at least three stages of division channels, which are successively designated in a direction from the liquid inlet (31) to the liquid outlet (32) as division channel of the first stage (331), division channel of the second stage (332) and division channel of the third stage (333); wherein the reversing buffer zone (34) between the division channel of the first stage (331) and the division channel of the second stage (332) and the reversing buffer zone (34) between the division channel of the second stage (332) and the division channel of the third stage (333) are designated as the first buffer zone (341) and the second buffer zone (342), respectively; wherein the division channel of the third stage (333) and the second buffer zone (342) are designed such that they are located within an extension area of ​​the first buffer zone (341) in an axial direction of the roller brush (2). [16] Cleaning device according to claim 15, wherein the liquid flow channel (33) further comprises a connecting channel (334) for connecting the liquid inlet (31) to the division channel of the first stage (331) and the connecting channel (334) is configured such that it is lower than the division channel of the first stage (331); wherein an inlet buffer zone (343) is provided at a connection position between the connecting channel (334) and the division channel of the first stage (331); wherein liquid is guided in the connecting channel (334) such that it flows upwards into the division channel of the first stage (331) after it has changed direction of flow at least twice in the inlet buffer zone (343). [17] Cleaning device according to claim 16, wherein the connecting channel (334) is designed such that it is at the same level as the dividing channel of the second stage (332); wherein the inlet buffer zone (343) is designed such that it lies within an extension area of ​​the first buffer zone (341) in an axial direction of the roller brush (2). [18] Cleaning device according to claim 12, wherein the height of the upstream reversing buffer zone (34) is greater than the height of the downstream reversing buffer zone (34); and / or the height of the most downstream reversing buffer zone (34) is less than the height of the reversing buffer zone (34) at any other position. [19] Cleaning device according to claim 18, wherein a height of the reversing buffer zone (34) comprises a depth of the liquid storage zone (344) and an extension length of the reversing channel (345). [20] Cleaning device according to claim 10, wherein each of the at least two stages of division channels is configured such that it extends along an axial direction of the roller brush (2), and the division channel of a higher stage is configured such that it is connected to a central part of a division channel of a lower stage by a reversing buffer zone (34), and wherein fluid located in the reversing buffer zone (34) is directed such that it flows to the division channels of the lower stage on both sides of the division channel of the higher stage; wherein the most upstream division channel is configured such that it is connected to the fluid inlet (31); wherein the number of fluid outlets (32) is more than one and a plurality of most downstream division channels are configured such that they are each connected to a plurality of fluid outlets (32). [21] Liquid outlet component, comprising: a liquid outlet plate (3); a liquid inlet (31) and a liquid outlet (32) arranged on the liquid outlet plate (3); and a liquid flow channel (33) connecting the liquid inlet (31) and the liquid outlet (32), wherein a liquid dividing element (36) and guide elements are provided on the liquid outlet plate (3) at a position corresponding to the liquid outlet (32), and the guide elements are designed such that they extend from a position adjacent to the liquid outlet (32) and form guide points (370) at an end remote from the liquid outlet (32); and The liquid flowing out of the liquid outlet (32) is directed in such a way that it flows along the guide parts after it has been divided by the liquid dividing part (36).

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