Cleaning device

Abstract

The utility model relates to cleaning equipment which comprises a floor brush assembly, and the floor brush assembly comprises a floor brush shell, a rolling brush and a liquid outlet assembly. The rolling brush is rotationally connected to the floor brush shell and is configured to be used for cleaning the working face. The liquid outlet assembly is arranged on the floor brush shell; the liquid outlet assembly comprises a liquid outlet plate, a liquid inlet and a liquid outlet which are formed in the liquid outlet plate, and a liquid flow channel for communicating the liquid inlet with the liquid outlet; the liquid flow channel comprises at least two stages of shunting channels which are positioned at different heights and are communicated in sequence; a steering buffer area is arranged at the communicating position of every two adjacent stages of flow dividing channels, and liquid is configured to flow into the flow dividing channel of the next stage after the flowing direction of the liquid is converted at least twice in the steering buffer areas. According to the liquid outlet assembly, flow division in the liquid outlet assembly is more uniform, even under the low-flow condition, all the liquid outlets of the liquid outlet assembly can keep the basically uniform liquid outlet amount, and the use experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of cleaning equipment, and in particular, to a cleaning equipment. BACKGROUND

[0002] With the development of social productivity, people's living standards have also been improved. On the premise of material foundation, people begin to use various tools to reduce labor and improve the quality of life, and household cleaning equipment emerges as the times require.

[0003] As for the scrubber, under the condition of low flow, the traditional scrubber often appears the phenomenon of uneven water spraying, which will lead to different water content on different points of the roller brush. In the cleaning area passed by the roller brush, the points with high water content on the roller brush will leave a wet water mark area on the ground, resulting in uneven distribution of water marks on the ground, and further affecting the drying speed of the ground. This not only affects the cleaning effect of the ground, but also may cause safety hazards, such as a wet and slippery ground that may cause people to slip. CONTENT OF THE UTILITY MODEL

[0004] The present disclosure provides a cleaning equipment to solve the problems in the prior art.

[0005] According to a first aspect of the present disclosure, a cleaning equipment is provided, comprising a floor brush assembly, the floor brush assembly comprising:

[0006] a floor brush housing;

[0007] a roller brush rotatably connected to the floor brush housing and configured to clean a working surface;

[0008] a liquid outlet assembly arranged on the floor brush housing; the liquid outlet assembly comprising a liquid outlet plate, a liquid inlet arranged on the liquid outlet plate, a liquid outlet, and a liquid flow channel communicating the liquid inlet and the liquid outlet;

[0009] wherein the liquid flow channel comprises at least two levels of shunt channels at different heights and sequentially communicating, and the liquid flows in two different directions when flowing into the shunt channels; a turning buffer zone is arranged at the position where the two adjacent levels of shunt channels communicate, and the liquid is configured to flow into the next level of shunt channels after changing the flow direction at least twice in the turning buffer zone.

[0010] One beneficial effect of the present disclosure is that by setting a turning buffer zone at the position where the two adjacent sub-flow channels are communicated, and enabling the liquid from the upper sub-flow channel to flow into the lower sub-flow channel after changing the flow direction at least twice in the turning buffer zone. Specifically, the liquid changes the flow direction in the turning buffer zone before each sub-flow, thereby reducing the kinetic energy of the liquid and reducing the flow inertia of the liquid in the upper sub-flow channel. The liquid in the turning buffer zone can flow into the lower sub-flow channel substantially evenly, thereby reducing the flow difference during sub-flow. The present disclosure makes the sub-flow in the liquid outlet assembly more uniform, so that each liquid outlet of the liquid outlet assembly can maintain a substantially uniform liquid outlet amount even under low flow conditions, thereby improving the user experience.

[0011] Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0012] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0013] Figure 1 is a sectional view of the liquid outlet assembly of the present disclosure;

[0014] Figure 2 is a sectional view of the liquid outlet assembly of the present disclosure; Figure 1 is a partial enlarged view of the liquid outlet plate position in

[0015] Figure 3 is an exploded view of the structure of the liquid outlet plate of the present disclosure;

[0016] Figure 4 is a sectional view of the liquid outlet plate of the present disclosure;

[0017] Figure 5 is a partial enlarged view of C in Figure 4

[0018] Figure 6 is a partial enlarged view of B in Figure 4

[0019] Figure 7 is a partial enlarged view of A in Figure 4

[0020] Figure 8 is a partial enlarged view of the structure of the liquid outlet plate of the present disclosure;

[0021] Figure 9 is a front view of the liquid outlet plate of the present disclosure;

[0022] Figure 10 is a structural schematic view of the liquid outlet plate and the dirt scraping plate of the present disclosure; ​​​

[0023] Figure 11 is Figure 10 is a local enlarged view of D in FIG. 1;

[0024] Figure 12 is a result graph of the wetness test of the segmented roller brush of the control group in Embodiment Two of the present disclosure;

[0025] Figure 13 is a result graph of the wetness test of the segmented roller brush of the experimental group in Embodiment Two of the present disclosure;

[0026] Figure 14 is a result graph of the liquid outlet hole flow test of the control group in Embodiment Two of the present disclosure;

[0027] Figure 15 is a result graph of the liquid outlet hole flow test of the experimental group in Embodiment Two of the present disclosure;

[0028] Figure 16 is a sectional view of the liquid outlet plate in the prior art.

[0029] Figures 1 to 16 A one-to-one correspondence between the names of various components and the reference numerals in FIG. 1 is as follows:

[0030] 1, ground brush housing; 11, traveling wheel; 2, roller brush; 3, liquid outlet plate; 31, liquid inlet; 32, liquid outlet; 33, liquid flow channel; 331, first-stage shunt flow channel; 332, second-stage shunt flow channel; 333, third-stage shunt flow channel; 334, connecting channel; 34, steering buffer zone; 341, first buffer zone; 342, second buffer zone; 343, liquid inlet buffer zone; 344, liquid storage zone; 345, steering channel; 3451, first guide rib; 3452, second guide rib; 35, blocking wall; 351, liquid buffer zone; 36, liquid distribution portion; 370, guide point; 371, guide surface; 372, guide rib; 38, partition rib; 4, dirt scraping plate; 41, exposed zone; 5, dirt suction port. DETAILED DESCRIPTION

[0031] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. Note that the relative arrangement, numerical expressions, and numerical values of the components and steps set forth in these embodiments are not limiting of the scope of the present disclosure unless otherwise specifically stated.

[0032] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way limiting of the scope of the disclosure or its applications or uses.

[0033] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, where appropriate, such techniques, methods, and apparatus should be considered as part of the description of the present disclosure.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0035] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0036] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0037] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0038] Example 1

[0039] This disclosure provides a cleaning device, which can be a handheld cleaning device, such as a handheld cleaning machine, handheld wet vacuum cleaner, handheld floor scrubber, handheld fabric cleaner, or other handheld cleaning devices well known to those skilled in the art. It can also be a floor cleaning robot, a sweeping and mopping robot, or other self-moving cleaning devices well known to those skilled in the art. This embodiment uses a handheld floor scrubber as an example. The cleaning device includes a handheld part (not shown in the figure), a body (not shown in the figure), and a floor brush assembly connected to the bottom of the body. Specifically, the floor brush assembly is rotatably connected to the body, such as... Figure 1 As shown, when the cleaning equipment is parked on the work surface or cleaning the work surface, the floor brush assembly remains in contact with the work surface. When the cleaning equipment is turned on, the user holds the handheld part, tilts the machine body, and pushes and pulls it back and forth. The floor brush assembly moves accordingly on the work surface to clean the dirt on the work surface. When the user holds the handheld part and straightens the machine body, the cleaning equipment stops working.

[0040] refer to Figure 1 The floor brush assembly includes a floor brush housing 1, a roller brush 2, and a liquid dispensing assembly. The roller brush 2 is rotatably connected to the floor brush housing 1 and is configured to clean the work surface. Cleaning cotton, brush bristles, or other cleaning components may be provided on the outer surface of the roller brush 2. The rotation axis of the roller brush 2 is parallel to the work surface, and during normal operation, the roller brush 2 can move along... Figure 1 The arrows in the text indicate the direction (refer to) Figure 1 The view direction (i.e., clockwise) is rotated, and the roller brush 2 can wet-mop the work surface during the rotation. For example... Figure 1As shown, the roller brush 2 can be rotatably connected to one side of the floor brush housing 1, and a travel wheel 11 can be provided on the other side. The travel wheel 11 rotates by the user applying a forward or backward pushing force, or when the cleaning device of this disclosure is a cleaning robot, the travel wheel 11 rotates under its own driving force so that the cleaning device can walk on the working surface.

[0041] The liquid dispensing assembly is mounted on the floor brush housing 1, see reference. Figure 2 and Figure 3 The liquid dispensing assembly includes a liquid dispensing plate 3, an inlet 31 and an outlet 32 ​​disposed on the liquid dispensing plate 3, and a liquid flow channel 33 connecting the inlet 31 and the outlet 32. The liquid dispensing plate 3 is configured to provide cleaning medium to the roller brush 2, which allows the cleaning equipment to wet mop the work surface during cleaning operations. The cleaning medium can be clean water or a disinfectant liquid prepared to an appropriate concentration, etc., and this disclosure does not limit this. The floor brush assembly may be provided with a clean water tank and / or a cleaning liquid tank. The inlet 31 of the liquid dispensing plate 3 can be connected to the outlet of the clean water tank and / or the cleaning liquid tank. The cleaning medium enters the liquid dispensing plate 3 through the inlet 31 and flows to the outlet 32 ​​through the liquid flow channel 33. The outlet 32 ​​can be configured to face the roller brush 2, thereby providing cleaning medium to the roller brush 2.

[0042] refer to Figure 4 The liquid flow channel 33 includes at least two levels of diversion channels located at different heights and connected sequentially. The upstream diversion channel is configured to connect with the inlet 31, and multiple outlets 32 are provided. Multiple downstream diversion channels are configured to connect to multiple outlets 32 respectively. In one embodiment of this disclosure, the upstream position can be the highest position, and the downstream position can be the lowest position, allowing the cleaning liquid to flow naturally downwards under gravity, thereby achieving step-by-step diversion. The cleaning liquid flows into the upstream diversion channel through the inlet 31 and is diverted downwards step-by-step to flow out from multiple outlets 32. It should be noted that each upstream diversion channel is connected to at least two downstream diversion channels, thus achieving the function of diversion. Water passages connected only to a single diversion channel are not considered diversion channels as defined in this disclosure. In other words, a diversion channel refers to a channel in which liquid flows in two opposite directions after it enters the channel. Because the liquid flows in two different directions in the channel, the diversion channel can perform the function of diverting the flow.

[0043] In one embodiment of this disclosure, reference is made to Figure 4 and Figure 5 The liquid flow channel 33 includes at least three stages of diversion channels, which are sequentially designated as the first-stage diversion channel 331, the second-stage diversion channel 332, and the third-stage diversion channel 333 from the inlet 31 to the outlet 32. (Reference) Figure 4In the view direction, the fluid flow channels 33, from top to bottom, are a first-stage diversion channel 331, a second-stage diversion channel 332, and a third-stage diversion channel 333, each diversion channel being constructed to extend along the axial direction of the roller brush 2. Further, as... Figure 4 As shown, the first-stage diversion channel 331 and the second-stage diversion channel 332 have a projected overlap in the height direction, and the two diversion channels can share a partition wall; similarly, the second-stage diversion channel 332 and the third-stage diversion channel 333 also have a projected overlap in the height direction, and these two diversion channels can also share a partition wall. This reduces the space occupied by the channel walls of the three-stage diversion channels and reduces the size of the outlet plate 3 in the height direction.

[0044] like Figure 5 As shown, the liquid flow channel 33 also includes a connecting channel 334 for connecting the inlet 31 and the first-stage diversion channel 331. The connecting channel 334 is configured to be lower than the first-stage diversion channel 331. It should be noted that the connecting channel 334 is directly connected to the inlet 31, so it is the upstream channel. The downstream of the connecting channel 334 is connected to the first-stage diversion channel 331. However, since the connecting channel 334 is only used to connect one downstream channel, the liquid flows in only one direction within the connecting channel 334. Therefore, the connecting channel 334 itself does not have a diversion function. It can be seen that the connecting channel 334 does not belong to the diversion channel referred to in this disclosure. The diversion channels in this embodiment only include the first-stage diversion channel 331, the second-stage diversion channel 332, and the third-stage diversion channel 333. The connecting channel 334 is connected to the middle position of the first-stage diversion channel 331, so that the clean liquid flowing into the connecting channel 334 through the inlet 31 can enter the first-stage diversion channel 331 from the middle position.

[0045] like Figure 5 As shown, the inlet 31 and the connecting channel 334 are located in the extension direction of the second-stage diversion channel 332. In this way, on the one hand, the space of the outlet plate 3 is fully utilized, and there is no need to provide additional space for the inlet 31 above the first-stage diversion channel 331, thereby reducing the size of the outlet plate 3; on the other hand, the distance between the inlet 31 and the first-stage diversion channel 331 is reduced, so that the connecting channel 334 has a smaller length, thereby minimizing the energy consumption of the anti-gravity flow of the cleaning medium.

[0046] Continue to refer to Figure 4 In the view orientation, the liquid enters the connecting channel 334 through the inlet 31 and flows to the right along the connecting channel 334. Upon reaching the end of the channel, it flows upward into the first-stage diversion channel 331. Within the first-stage diversion channel 331, the liquid flows to the left and right respectively. Upon reaching the ends of both sides, the liquid flows into the second-stage diversion channel 332. Figure 4As shown, the two ends of the first-stage diversion channel 331 are respectively connected to the middle region of a second-stage diversion channel 332, meaning there are two second-stage diversion channels 332 in this embodiment. Liquid can flow from the connecting end to its two ends in the second-stage diversion channels 332. Further, the end of each second-stage diversion channel 332 is connected to the middle region of a third-stage diversion channel 333, meaning there are four third-stage diversion channels 333 in this embodiment. Liquid can flow from the connecting end to its two ends in the third-stage diversion channels 333. Each third-stage diversion channel 333 has an outlet 32 ​​at its end, meaning there are eight outlets 32 in this embodiment. The liquid undergoes three diversions within the liquid flow channel 33 in this embodiment, ultimately forming eight liquid streams. The eight outlets 32 can be distributed at equal intervals on the outlet plate 3, allowing liquid to flow out from each of the eight outlets 32 to wet different areas of the roller brush 2.

[0047] However, the traditional flow channel 33 design is prone to causing uneven liquid distribution at each outlet 32, especially at lower total flow rates (e.g., 20-100 ml / min), where the uneven distribution becomes more pronounced. (Reference) Figure 16 Liquid flows into the first-stage diversion channel 331 through the inlet 31. Liquid entering the second-stage diversion channel 332 from the right end of the first-stage diversion channel 331 has a rightward inertia, causing more liquid to flow to the right-side second-stage diversion channel 332 and less to the left-side. Furthermore, when liquid enters the third-stage diversion channel 333 from the second-stage diversion channel 332, it is also unevenly distributed due to its current inertia, resulting in flow differences at the four outlets 32 on the right side. Similarly, from the first-stage diversion channel... The liquid entering the second-stage diversion channel 332 from the left end of the flow channel 331 has a leftward inertia, causing more liquid to flow to the left-side second-stage diversion channel 332 and less liquid to the right-side second-stage diversion channel 332. Furthermore, when the liquid enters the third-stage diversion channel 333 from the second-stage diversion channel 332, it is also unevenly distributed due to the current inertia. This results in flow rate differences among the four outlets 32 on the left, with the rightmost outlet 32 ​​having the highest flow rate and the third outlet 32 ​​from the left having the lowest flow rate. At higher total flow rates, the uneven flow is not significant because the flow channel 33 can be completely filled with liquid. However, at low flow rates, the flow rate differences between the outlets 32 become very noticeable. This leads to significant differences in humidity at different locations on the roller brush 2, resulting in uneven distribution of watermarks on the working surface and a decrease in the cleaning effect of the roller brush 2.

[0048] To address the aforementioned issues, this disclosure incorporates a turning buffer zone 34 at the junction of adjacent two-stage diversion channels. The liquid is configured to change its flow direction at least twice within the turning buffer zone 34 before flowing into the next-stage diversion channel. During the stage-by-stage diversion process, the liquid changes its flow direction within the turning buffer zone 34 before each diversion, thereby reducing the liquid's kinetic energy and mitigating its flow inertia within the previous-stage diversion channel. This allows the liquid within the turning buffer zone 34 to flow into the next-stage diversion channel with a substantially uniform flow rate, thus reducing flow rate differences during diversion. This disclosure results in more uniform flow distribution within the liquid outlet assembly. Even under low flow conditions, each outlet 32 ​​of the liquid outlet assembly maintains a substantially uniform liquid output, improving the user experience.

[0049] In one embodiment of this disclosure, reference is made to Figure 4 The upper-level diversion channel is constructed to connect to the central region of the lower-level diversion channel via a turning buffer 34. Liquid located in the turning buffer 34 is configured to flow into the lower-level diversion channels on either side of it. The turning buffers 34 between the first-level diversion channel 331 and the second-level diversion channel 332, and between the second-level diversion channel 332 and the third-level diversion channel 333, are respectively designated as the first buffer 341 and the second buffer 342. Figure 5 As shown, an inlet buffer zone 343 is provided at the connection position between the connecting channel 334 and the first-stage diversion channel 331. The liquid in the connecting channel 334 is configured to change its flow direction at least twice in the inlet buffer zone 343 before flowing upward into the first-stage diversion channel 331. This can reduce the flow inertia and horizontal kinetic energy of the liquid in the connecting channel 334, and the liquid can be more evenly distributed to both sides of the first-stage diversion channel 331.

[0050] In this embodiment, the connecting channel 334 is connected to the middle region of the first-stage diversion channel 331 via the liquid inlet buffer 343. That is, the first-stage diversion channel 331 is provided with one channel. After the liquid in the liquid inlet buffer 343 enters the first-stage diversion channel 331, it will flow to the two opposite ends of the first-stage diversion channel 331. The two ends of the first-stage diversion channel 331 are respectively connected to the middle region of the second-stage diversion channel 332 via their respective first buffers 341. That is, the second-stage diversion channel 332 is provided with two channels. The middle region of each second-stage diversion channel 332 is connected to the end of the corresponding first-stage diversion channel 331 via the first buffer 341. Thus, after the liquid in the first buffer 341 enters the second-stage diversion channel 332, it will flow to the middle region of the first-stage diversion channel 331. The liquid flows to the two ends of the second-stage diversion channel 332; the two ends of the second-stage diversion channel 332 are connected to the middle region of the third-stage diversion channel 333 through their respective second buffer zones 342; that is, there are four third-stage diversion channels 333, and the middle region of each third-stage diversion channel 333 is connected to the end of the corresponding second-stage diversion channel 332 through the second buffer zone 342. Thus, after the liquid in the second buffer zone 342 enters the third-stage diversion channel 333, it will flow to the two ends of the third-stage diversion channel 333. This achieves a basically uniform distribution of liquid to the four third-stage diversion channels 333, so that the eight liquid outlets 32 can discharge liquid in a basically uniform manner, and the wetting degree of each area of ​​the roller brush 2 can be kept basically consistent.

[0051] In one embodiment of this disclosure, reference is made to Figure 6 and Figure 7 The deflection buffer zone 34 includes a liquid storage area 344 located below the upper-level diversion channel, which is configured to communicate with the lower-level diversion channels located on either side of it. The bottom of the liquid storage area 344 is configured to be lower than the lower-level diversion channel, and the top of the liquid storage area 344 is configured to be no higher than the lower-level diversion channel, thereby causing the deflection buffer zone 34 to sink relative to the lower-level flow channel. The liquid in the upper-level diversion channel is configured to flow into the liquid storage area 344, and when the liquid level in the liquid storage area 344 reaches a predetermined height, it flows to the lower-level diversion channels on both sides. Positioning the liquid storage area 344 below the upper-level diversion channel facilitates the use of gravity to reduce horizontal kinetic energy within the liquid storage area 344. Figure 6As shown, taking the first buffer zone 341 as an example, a liquid storage area 344 is provided below the first-stage diversion channel 331. The top height of the liquid storage area 344 is not higher than the second-stage diversion channel 332. Liquid from the first-stage diversion channel 331, after flowing into the liquid storage area 344, will not immediately flow into the second-stage diversion channel 332 under the influence of gravity. Instead, it will accumulate in the liquid storage area 344 until the liquid level rises to the height of the second-stage diversion channel 332, at which point the liquid can flow into the second-stage diversion channels 332 on both sides. The liquid in the first-stage diversion channel 331 has a leftward (refer to...) direction. Figure 6 The kinetic energy of the liquid (in the view direction) is buffered in the liquid storage area 344, thereby reducing the kinetic energy and allowing it to be distributed relatively evenly to the second-stage diversion channel 332.

[0052] Similarly, such as Figure 7 As shown, taking the second buffer zone 342 as an example, a liquid storage area 344 is provided below the second-stage diversion channel 332. The top height of the liquid storage area 344 is no higher than the third-stage diversion channel 333. Liquid from the second-stage diversion channel 332, after flowing into the liquid storage area 344, does not immediately flow into the third-stage diversion channel 333, but accumulates within the liquid storage area 344 until the liquid level rises to the height of the third-stage diversion channel 333, at which point the liquid can flow into the third-stage diversion channels 333 on both sides. The liquid in the second-stage diversion channel 332 has a leftward (refer to...) direction. Figure 7 The kinetic energy of the liquid (in the view direction) is buffered in the liquid storage area 344, thereby reducing the kinetic energy and allowing it to be distributed relatively evenly to the third-stage diversion channel 333.

[0053] In one embodiment of this disclosure, reference is made to Figure 5 A liquid inlet buffer zone 343 is provided at the end of the connecting channel 334. The top of the liquid inlet buffer zone 343 is not higher than the first-stage diversion channel 331. Liquid from the connecting channel 334, after flowing into the liquid inlet buffer zone 343, does not immediately flow into the first-stage diversion channel 331, but accumulates within the liquid inlet buffer zone 343 until the liquid level rises to the height of the first-stage diversion channel 331, at which point the liquid can flow into the first-stage diversion channel 331. The liquid flows to the right (see reference) within the connecting channel 334. Figure 5 The kinetic energy of the liquid (in the view direction) is buffered within the liquid inlet buffer 343, thereby reducing the kinetic energy and enabling it to be distributed relatively evenly to the left and right sides of the first-stage diversion channel 331.

[0054] This disclosure, by setting a turning buffer zone 34 between each flow channel, allows the upstream liquid to accumulate and briefly reside within the turning buffer zone 34, thereby reducing the kinetic energy of the liquid before each diversion and avoiding the inertia of the liquid continuously maintaining and accumulating in the upper flow channel. During each diversion, the liquid with eliminated kinetic energy rises steadily and can be distributed relatively evenly to the lower diversion channels on both sides, thus ensuring that each outlet 32 ​​maintains a basically uniform liquid output.

[0055] In one embodiment of this disclosure, reference is made to Figure 6 and Figure 7 The deflection buffer zone 34 also includes 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 participate in forming a deflection channel 345. The deflection channel 345 is configured to extend from the previous stage diversion channel toward the liquid storage area 344. Liquid in the previous stage diversion channel is configured to flow into the liquid storage area 344 through the deflection channel 345. The width of the liquid storage area 344 is configured to be greater than the width of the deflection channel 345, so that when liquid flows into the liquid storage area 344 from the deflection channel 345, the flow velocity of the liquid is reduced, which helps to eliminate the kinetic energy of the liquid.

[0056] like Figure 6 As shown, taking the first buffer zone 341 as an example, the liquid flows from the first-stage diversion channel 331 into the second-stage diversion channel 332. It first changes from a horizontal flow direction (located in the first-stage diversion channel 331) to a vertical flow direction (located in the turning channel 345), then back to a horizontal flow direction (located in the liquid storage area 334), then to an upward flow (the liquid level rises in the liquid storage area 334), and finally back to a horizontal flow direction (located in the second-stage diversion channel 332). Through these multiple flow direction changes, the horizontal kinetic energy of the liquid along its initial flow direction in the first-stage diversion channel 331 can be eliminated as much as possible, thus allowing it to flow evenly into the second-stage diversion channel 332.

[0057] Similarly, such as Figure 7 As shown, taking the second buffer zone 342 as an example, the liquid flows from the second-stage diversion channel 332 into the third-stage diversion channel 333. It first changes from a horizontal flow direction (located in the second-stage diversion channel 332) to a vertical flow direction (located in the turning channel 345), then back to a horizontal flow direction (located in the liquid storage area 334), then to an upward flow (the liquid level rises in the liquid storage area 334), and finally back to a horizontal flow direction (located in the third-stage diversion channel 333). Through these multiple flow direction changes, the horizontal kinetic energy of the liquid along its initial flow direction in the second-stage diversion channel 332 can be eliminated as much as possible, thus allowing it to flow evenly into the third-stage diversion channel 333.

[0058] In one specific embodiment of this disclosure, such as Figure 6As shown, in the upstream turning buffer zone 34, the end of the turning channel 345 adjacent to the liquid storage zone 344 is configured to be lower than the top of the liquid storage zone 344 in the height direction. If the end of the turning channel 345 adjacent to the liquid storage zone 344 is set to be higher than or level with the top of the liquid storage zone 344, then after the liquid storage zone 344 is full of liquid, no new liquid will flow into the liquid storage zone 344. Instead, it will flow directly into the next-level diversion channel after flowing out of the turning channel 345. This would not achieve the effect of kinetic energy removal, and the liquid would not be adequately buffered. In this disclosure, the first guide rib 3451 and the second guide rib 3452 are designed to partially extend into the liquid storage zone 344. The liquid in the turning channel 345 can flow to a position lower than the highest liquid level in the liquid storage zone 344, thereby ensuring the renewal of the liquid in the liquid storage zone 344 and ensuring that the liquid can be continuously buffered, avoiding the problem of uneven diversion caused by kinetic energy impact.

[0059] Furthermore, the upstream liquid has high kinetic energy, indicating a greater buffering requirement upstream. Therefore, in at least the upstream turning buffer zone 34, the turning channel 345 can extend into the liquid storage area 344. For example, in this embodiment, in Figure 6 In the first buffer zone 341 shown, the end of the turning channel 345 adjacent to the liquid storage area 344 is significantly lower in the height direction than the top of the liquid storage area 344. And as... Figure 7 As shown, in the downstream second buffer zone 342, the end of the turning channel 345 adjacent to the liquid storage area 344 can be basically flush with the top of the liquid storage area 344 in the height direction. This is because the downstream liquid kinetic energy has been largely consumed, and its buffering demand is relatively small. Moreover, the downstream turning buffer zone 34 has a small space, so the turning channel 345 can be reasonably set based on the actual space.

[0060] In one embodiment of this disclosure, reference is made to Figure 6 and Figure 7 A baffle wall 35 is provided at the end of the upper-level diversion channel. In the extending direction of the upper-level diversion channel, one end of the turning channel 345 is configured to communicate with a position in the upper-level diversion channel offset from its baffle wall 35, so as to form a liquid buffer zone 351 in the region between the baffle wall 35 and the turning channel 345 in the upper-level diversion channel. The liquid buffer zone 351 is located in the extending path of the upper-level diversion channel. (Reference) Figure 6 In the view direction, taking the first buffer zone 341 as an example, a blocking wall 35 is provided at the left end of the first-stage diversion channel 331, and the second guide rib 3452 is deviated to the right of the blocking wall 35 in the vertical direction, thereby forming a liquid buffer zone 351 at the left end of the first-stage diversion channel 331; when the liquid in the first-stage diversion channel 331 flows to the left, it can be blocked by the blocking wall 35, which helps to reduce the horizontal kinetic energy of the liquid. The liquid flows back in the liquid buffer zone 351 and enters the turning channel 345 with a smaller kinetic energy.

[0061] refer to Figure 7 In the view direction, taking the second buffer zone 342 as an example, a baffle wall 35 is provided at the left end of the second-stage diversion channel 332, and the second guide rib 3452 is deviated to the right of the baffle wall 35 in the vertical direction, thereby forming a liquid buffer zone 351 at the left end of the second-stage diversion channel 332; when the liquid in the second-stage diversion channel 332 flows to the left, it can be blocked by the baffle wall 35, which helps to reduce the horizontal kinetic energy of the liquid. The liquid flows back in the liquid buffer zone 351 and enters the turning channel 345 with a smaller kinetic energy.

[0062] Without a liquid buffer zone 351, the upstream liquid flow will enter the turning channel 345 with greater kinetic energy after impacting the channel wall. At this time, the uncontrollability of the liquid flow's kinetic energy increases, and it may have kinetic energy in various directions. This may prevent the liquid flow from following the path planned by the liquid flow channel 33 (i.e., entering the storage area 344 for buffering along the turning channel 345 first, and then flowing into the next stage channel after the liquid level rises). The unbuffered liquid cannot flow evenly to the left and right into the next stage channel. This disclosure provides a liquid buffer zone 351 at the end of the previous stage channel, so that the liquid in the previous stage channel can unify its kinetic energy direction by impacting the blocking wall 35 and flowing back before entering the turning channel 345. This helps to evenly distribute the flow and helps each outlet 32 ​​maintain a basically uniform liquid output.

[0063] In one embodiment of this disclosure, reference is made to Figure 4The height of the upstream diversion buffer zone 34 is greater than that of the downstream diversion buffer zone 34; and / or, the height of the downstream diversion buffer zone 34 is smaller than that of the diversion buffer zones 34 at other locations. It should be noted that the height of the diversion buffer zone 34 includes the depth of the liquid storage area 344 and the extension length of the diversion channel 345; that is, the height of the diversion buffer zone 344 can be reflected in the depth of the liquid storage area 344 and the extension length of the diversion channel 345. The deeper the liquid storage area 344 and the longer the diversion channel 345, the larger the height of the diversion buffer zone 344 is considered to be. For example, in this embodiment, only a three-stage diversion channel is provided, therefore only two diversion buffer zones 34 are included: 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 can be understood that as diversion proceeds, the amount of liquid entering each diversion channel will gradually decrease, and the kinetic energy of the liquid will also gradually decrease after each diversion buffer. It is evident that the upstream liquid has the greatest kinetic energy, therefore the upstream turning buffer 34 needs to be set to a larger height to improve the buffering effect. When the liquid flows to the downstream position, its kinetic energy has already been greatly reduced, so the downstream turning buffer 34 can be set to a smaller height. This reduces the space occupied by the downstream turning buffer 34 and improves the unobstructed flow of the downstream diversion channel, thus reducing the amount of liquid stored in the liquid storage area 344.

[0064] In other embodiments, more levels of diversion channels can be provided in the outlet plate 3. For example, in the case of a four-level diversion channel, the height of the upstream turning buffer 34 can be set to the largest, the height of the midstream turning buffer 34 can be centered, and the height of the downstream turning buffer 34 can be the smallest. Alternatively, only the height of the downstream turning buffer 34 can be set to the smallest, while the heights of the upstream and midstream turning buffers 34 can be the same. This is because the downstream turning buffer 34 needs to buffer less liquid kinetic energy than the upstream, so only a smaller turning buffer 34 is needed to meet the buffering requirements, thereby reducing the size of the outlet plate 3. Furthermore, the upstream liquid kinetic energy is greater and requires more buffering; based on the height of the flow channel itself, the upstream has more space to set a larger turning buffer. In this way, the buffering requirements of each level are met while the size of the outlet plate 3 is reduced.

[0065] In one embodiment of this disclosure, reference is made to Figure 4 The third-stage flow channel 333 and the second buffer zone 342 are configured to be located within the extension range of the first buffer zone 341 along the axial direction of the brush 2. (Reference) Figure 5The connecting channel 334 is configured to be flush with the second-stage diversion channel 332, and the liquid inlet buffer 343 is configured to be located within the extension range of the first buffer 341 in the axial direction of the roller brush 2. This provides a compact arrangement of the three-stage diversion channels and the connecting channel. Compared with the conventional liquid outlet plate 3, this disclosure adds a turning buffer 34 (e.g., including at least: the first buffer 341 and the second buffer 342) and a liquid inlet buffer 343, which occupy space in the height direction. However, by optimizing the layout of the liquid path, this disclosure makes the diversion channel located within the lateral extension range of the turning buffer 34, thus eliminating the need for additional height space. The size of the liquid outlet plate 3 can be completely consistent with the conventional liquid outlet plate 3, which is beneficial to improving the adaptability of the liquid outlet plate 3. Users can replace the liquid outlet plate 3 of this disclosure with the space of the existing liquid outlet assembly without replacing the entire cleaning equipment. Furthermore, since the kinetic energy of the liquid downstream is less than that of the liquid upstream, the size of the second buffer zone 342 downstream can be set to be smaller than that of the first buffer zone 341 upstream. At the same time, the height difference between the first-stage diversion channel 331 and the third-stage diversion channel 333 is the largest. Thus, taking into account the kinetic energy elimination requirements and space requirements at different locations, the third-stage diversion channel 333 and the second buffer zone 342 are constructed to be located within the extension range of the first buffer zone 341 in the axial direction of the brush 2, and the liquid inlet buffer zone 343 is constructed to be located within the extension range of the first buffer zone 341 in the axial direction of the brush 2.

[0066] In one embodiment of this disclosure, reference is made to Figure 8 and Figure 9 A liquid distribution section 36 and a guide section are provided on the liquid outlet plate 3 at the position corresponding to the liquid outlet 32. The guide section is constructed to extend from the position adjacent to the liquid outlet 32 ​​in a mutually spaced manner, and at least two guide points 370 are formed at intervals at the end away from the liquid outlet 32. The liquid outlet plate 3 is usually vertically mounted on the floor brush housing 1, so that the liquid in the liquid outlet plate 3 can flow from upstream to downstream under the action of gravity; the liquid outlet 32 ​​on the liquid outlet plate 3 is constructed to face the roller brush 2, and the liquid needs to change its flow direction to be perpendicular to the flow channel or at a large angle to the flow channel in order to flow out of the liquid outlet 32. The liquid flowing out of the liquid outlet 32 ​​is constructed to flow along the guide sections on both sides after being separated by the liquid distribution section 36. There are multiple liquid outlets 32, and a liquid distribution section 36 is provided at the position corresponding to each liquid outlet 32. The liquid from the liquid outlet 32 ​​impacts the inner wall of the liquid distribution section 36, thereby diverting it to both sides of the liquid distribution section 36.

[0067] Traditional liquid outlet plates 3 typically include ribs for liquid separation. However, due to surface tension, the liquid tends to re-merge after passing the ribs, failing to completely separate into two streams. This disclosure addresses this by adding a guide section, which directs the liquid from the outlet 32, after being separated by the liquid separator 36, to flow in opposite directions along the guide section. The liquid flows to the two guide points 370 without merging, thus achieving complete separation and improving the liquid dispersion effect of the liquid outlet plate 3.

[0068] Specifically, such as Figure 8 As shown, the guide section includes guide ribs 372 located on opposite sides of the dispensing section 36. The dispensing section 36 is configured to extend upwards from between the two guide ribs 372 to a position higher than the outlet 32. The guide ribs 372 are configured to extend obliquely in the axial direction of the roller brush 2. It can be understood that the ends of the guide ribs 372 on both sides away from the outlet 32 ​​form two spaced guide points 370 on the outlet plate 3. The guide section also includes guide surfaces 371 located on opposite sides of the dispensing section 36 and connected to the bottom of the guide ribs 372. The guide surfaces 371 are configured to gradually slope in the height direction from a position adjacent to the outlet 32 ​​towards the direction of the roller brush 2. Figure 8 As shown, two guide ribs 372 and two guide surfaces 371 are symmetrically arranged on both sides of the liquid distribution section 36 to guide and receive the two liquid flows after the separation. The two liquid flows can flow away from each other along the guide ribs 372 on both sides and spread out on the guide surfaces 371; since the guide surfaces 371 are inclined in the direction of the roller brush 2, the liquid will not accumulate on the guide surfaces 371, but can flow naturally to the roller brush 2 under the action of gravity.

[0069] In one embodiment of this disclosure, reference is made to Figure 8 A separating rib 38 is provided on the guide surface 371 between adjacent liquid outlets 32. The separating rib 38 is constructed to extend from one end of the adjacent liquid outlet 32 ​​to the edge of the liquid outlet plate 3. It can be understood that adjacent liquid outlets 32 simultaneously discharge liquid and are divided into four liquid flows through their respective corresponding liquid distribution sections 36. The liquid flow on the right side of the left liquid outlet 32 ​​and the liquid flow on the left side of the right liquid outlet 32 ​​will flow closer to each other under the action of their respective guide ribs 372 and guide surface 371. If the separating rib 38 is not provided, the liquid flows on both sides will converge, which is not conducive to the dispersion of liquid discharge. By providing the separating rib 38, this disclosure achieves the separation of each liquid outlet 32. After the liquid flow from each liquid outlet 32 ​​is divided, it will not converge but will flow separately on its respective guide surface 371, effectively improving the dispersion of liquid discharge by the liquid outlet plate 3.

[0070] In one embodiment of this disclosure, such as Figure 1As shown, the floor brush housing 1 is equipped with a suction port 5. The suction port 5 can be connected to a wastewater tank on the machine body through a suction channel, so that the cleaning equipment can suck the dirt from the suction port 5 into the wastewater tank. Figure 2 As shown, a scraper 4 is provided below the liquid outlet plate 3, and the scraper 4 is configured to interfere with the roller brush 2. It should be noted that the scraper 4 can be considered as part of the liquid outlet assembly, fixed to the liquid outlet assembly to form an assembled part, or it can be a component independent of the liquid outlet assembly. (Reference) Figure 2 In view of the direction, the roller brush 2 rotates clockwise during normal operation. This allows the roller brush 2 to pass over the scraper 4 and then the liquid outlet assembly during rotation. The scraper 4 scrapes off the dirt on the roller brush 2, and the scraped dirt is sucked in by the negative pressure at the suction port 5 located below the scraper 4 (the negative pressure is generated by the suction motor, which can be located on the machine body). This prevents excessive dirt from adhering to the surface of the roller brush 2, improving the cleaning effect of the roller brush 2. After the dirt on the roller brush 2 is scraped off, the liquid outlet assembly sprays clean cleaning medium onto the roller brush 2. The roller brush 2, moistened with clean cleaning medium, rotates again to contact the working surface, thereby cleaning the working surface.

[0071] refer to Figure 10 The scraper 4 is configured to extend beyond the edge of the liquid outlet plate 3 on the side near the roller brush 2. The liquid flowing down from the guide section is directed to flow through the scraper 4 (specifically, the upper surface of the scraper 4) to the roller brush 2. In this embodiment, the scraper 4 serves to receive and guide the liquid. Under the guidance of the guide ribs 372 and the guide surface 371, the liquid flows onto the scraper 4 and continues to be guided by the scraper 4 to the roller brush 2. Since the scraper 4 and the roller brush 2 are interference-fitted, there are no gaps between them. Therefore, the liquid can be completely guided onto the roller brush 2 without dripping onto the working surface.

[0072] refer to Figure 11The distance between the area between the two guide points 370 and the outer edge of the scraper 4 is greater than the distance between the partition rib 38 and the outer edge of the scraper 4. Since the outer edge of the scraper 4 is constructed as a straight line, this distance difference results in the exposed area on the scraper 4 corresponding to the area between the two guide points 370 being larger than the exposed area on the scraper 4 corresponding to the partition rib 38. Specifically, the scraper 4 is partially covered by the guide surface 371, while the uncovered exposed area 41 serves to guide the flow. In one specific embodiment, the scraper 4 can be made of a hydrophilic material such as metal. Because metal is hydrophilic, liquid can easily spread evenly on the metal scraper 4. Furthermore, since the exposed areas at different locations on the scraper 4 are different, liquid can more easily flow towards areas with larger exposed areas on the scraper 4. The distance between the partition rib 38 and the outer edge of the scraper 4 is relatively small, and the exposed area of ​​the scraper 4 at this location is also relatively small. Therefore, the liquid flowing down from the partition rib 38 is more easily diverted to other areas on the scraper 4. The distance between the area between the two guide points 370 and the outer edge of the scraper 4 is relatively large, and the exposed area of ​​the scraper 4 at this location is also relatively large. Therefore, the liquid is more easily diverted to the area between the two guide points 370 on the scraper 4.

[0073] Furthermore, the distance from the partition rib 38 to the middle of the two guide points 370, and then to the outer edge of the scraper 4, gradually increases from the liquid outlet plate 3, and the exposed area of ​​the scraper 4 also gradually increases. Due to the diversion effect of the two guide ribs 372, almost no liquid flows to the scraper 4 in the area between the two guide points 370; the position corresponding to the partition rib 38 needs to receive liquid from the liquid outlets 32 on both sides, so a relatively large amount of liquid flows to the scraper 4; while for the area between the guide point 370 and the partition rib 38 (i.e., the area corresponding to the guide surface 371), a relatively average amount of liquid flows to the scraper 4. Based on this, this disclosure sets the area of ​​the exposed area 41 of the scraper 4 to be inversely proportional to the liquid flow rate, that is, the smaller the flow rate, the larger the exposed area 41 area, and the larger the flow rate, the smaller the exposed area 41 area. Liquid in the area with a large flow rate (i.e., the position corresponding to the partition rib 38) can flow to the larger area of ​​the exposed area 41 (i.e., the position between the two guide points 370) after flowing to the scraper 4, which is conducive to the uniform distribution of liquid on the scraper 4 and helps to make the humidity of each position on the roller brush 2 more uniform.

[0074] This disclosure also provides a liquid dispensing assembly, which includes a liquid dispensing plate 3, an inlet 31 and an outlet 32 ​​disposed on the liquid dispensing plate, and a liquid flow channel 33 connecting the inlet 31 and the outlet 32. The liquid flow channel 33 includes at least two stages of diversion channels located at different heights and connected sequentially; a turning buffer zone 34 is provided at the connection point of adjacent two stages of diversion channels, and the liquid is configured to change its flow direction at least twice within the turning buffer zone 34 before flowing into the next stage of diversion channel. The specific structure and principle of the liquid dispensing assembly of this disclosure are the same as those of the liquid dispensing assembly of the aforementioned cleaning equipment, and will not be repeated here.

[0075] Example 2

[0076] Using the cleaning equipment provided in Example 1 as the experimental group and a traditional cleaning equipment without a turning buffer zone as the control group, the following two sets of experiments were conducted:

[0077] Experiment 1: Segmented Humidity Test of Roller Brush

[0078] The cleaning equipment in both the control and experimental groups was fitted with identical brand-new roller brushes for testing to eliminate the influence of differences in the roller brush's own liquid absorption capacity. Lines were drawn on both sets of roller brushes, dividing them into five equal segments. Specifically, the five segments from the motor side to the handle side were labeled A, B, C, D, and E. This test determined the difference in liquid discharge uniformity between the two sets of roller brushes by measuring the water content of each segment.

[0079] Test method: The moisture content of each area on the drying roller brush was measured using a moisture meter; the roller brush was then installed on the cleaning equipment and run for 5 minutes; after that, the roller brush was removed, and the moisture content of each area on the roller brush was measured again using the moisture meter; the differences between the results before and after were compared. Five tests were performed on both the control group and the experimental group.

[0080] Table 1: Humidity test results of roller brush segments in the control group

[0081]

[0082] Table 2: Results of Humidity Test of Roller Brush Segments in the Experimental Group

[0083]

[0084] The test results are shown in Tables 1 and 2. Figure 12 and Figure 13 The coefficient of variation of the difference in water content between different sections of the control group roller brush after five minutes of operation (0.20) was greater than that of the experimental group roller brush after five minutes of operation (0.13). This shows that the cleaning equipment and liquid outlet component provided in this disclosure can distribute the liquid more evenly, and the water content of different sections of the roller brush is more uniform.

[0085] Experiment 2: Flow rate test at the liquid outlet

[0086] Both the control and experimental groups of the cleaning equipment had eight outlet holes in their respective liquid dispensing components. This test determined the difference in liquid dispensing uniformity between the two groups by measuring the liquid dispensing volume of each hole in both groups. Test method: First, the flow rate was increased for 5 seconds to ensure unobstructed flow paths and that all eight outlet holes could dispense liquid normally. Then, the flow rate was increased to 30 ml / min, and the liquid dispensing volume of each outlet was recorded within one minute. Five tests were performed on each group.

[0087] Table 3: Results of flow rate test at the outlet of the control group

[0088]

[0089] Table 4: Results of flow rate test at the outlet orifice of the experimental group

[0090]

[0091] The test results are shown in Tables 3 and 5. Figure 14 and Figure 15 The difference in water output between the holes of the control group's liquid outlet plate was greater than that between the holes of the experimental group's liquid outlet plate. This shows that the cleaning equipment and liquid outlet assembly provided in this disclosure can distribute the liquid more evenly, and the liquid output of each liquid outlet hole is more uniform.

[0092] Application Scenario 1

[0093] The cleaning equipment is a handheld floor scrubber, which includes a floor brush assembly. The floor brush assembly includes a floor brush housing 1, a roller brush 2, and a liquid dispensing assembly, wherein the liquid dispensing assembly includes a liquid dispensing plate 3. The liquid dispensing plate 3 has a liquid flow channel 33, which includes three-stage diversion channels. From the liquid inlet 31 to the liquid outlet 32, these channels are sequentially designated as the first-stage diversion channel 331, the second-stage diversion channel 332, and the third-stage diversion channel 333. A first buffer zone 341 and a second buffer zone 342 are respectively provided between the first-stage diversion channel 331 and the second-stage diversion channel 332, and between the second-stage diversion channel 332 and the third-stage diversion channel 333.

[0094] The liquid flow channel 33 also includes a connecting channel 334 for connecting the inlet 31 to the first-stage diversion channel 331. An inlet buffer zone 343 is provided at the connection point between the connecting channel 334 and the first-stage diversion channel 331. The connecting channel 334 connects to the middle region of the first-stage diversion channel 331 through the inlet buffer zone 343. Both ends of the first-stage diversion channel 331 connect to the middle region of the second-stage diversion channel 332 through their respective first buffer zones 341, thus forming two second-stage diversion channels 332. Both ends of the second-stage diversion channels 332 connect to the middle region of the third-stage diversion channel 333 through their respective second buffer zones 342, thus forming four third-stage diversion channels 333.

[0095] Liquid flows into connecting channel 334 through inlet 31 and then into inlet buffer 343 for buffering. It then enters the first-stage diversion channel 331 from the middle, diverting evenly to the left and right sides. Within the first-stage diversion channel 331, the liquid flows to the left and right respectively. When it reaches the ends on both sides, it flows into the first buffer 341 under gravity for buffering. Once the liquid level in the storage area 344 of the first buffer 341 rises to the height of the second-stage diversion channel 332, the liquid is evenly diverted into the second-stage diversion channels 332 on both sides. When the liquid reaches the end of the second-stage diversion channel 332, it flows into the second buffer 342 under gravity for buffering. Once the liquid level in the storage area 344 of the second buffer 342 rises to the height of the third-stage diversion channel 333, the liquid is evenly diverted into the third-stage diversion channels 333 on both sides.

[0096] After the above diversion process, the liquid is evenly divided into eight streams. The liquid outlet plate 3 can be provided with eight outlets 32 spaced at equal intervals. Approximately equal amounts of liquid can flow from these eight outlets 32 to evenly wet different areas of the roller brush 2. A distribution section 36 and a guide section are also provided at the position corresponding to each outlet 32. The liquid flowing from the outlet 32 ​​is configured to be separated by the distribution section 36 and then flow along the guide sections on both sides, thereby improving the liquid dispersion effect of the liquid outlet plate 3. The liquid flowing down from the guide section flows onto the scraper plate 4 and continues to be guided by the scraper plate 4 to the roller brush 2. The liquid can flow on the scraper plate 4 towards areas with a larger exposed area 41, which is beneficial for evenly spreading the liquid on the scraper plate 4 and helps to make the humidity more uniform across different areas of the roller brush 2.

[0097] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of this disclosure is defined by the appended claims.

Claims

1. A cleaning device, comprising a floor brush assembly, characterized in that, The floor brush assembly includes: Floor brush housing (1); A roller brush (2) is rotatably connected to the floor brush housing (1) and is configured to clean the work surface; The liquid dispensing assembly is disposed on the floor brush housing (1); the liquid dispensing assembly includes a liquid dispensing plate (3), an inlet (31) and an outlet (32) disposed on the liquid dispensing plate (3), and a liquid flow channel (33) connecting the inlet (31) and the outlet (32). The liquid flow channel (33) includes at least two levels of diversion channels located at different heights and connected in sequence. When the liquid flows into the diversion channel, it flows in two different directions. A turning buffer (34) is provided at the position where the two adjacent diversion channels are connected. The liquid is configured to change its flow direction at least twice in the turning buffer (34) before flowing into the next level of diversion channel.

2. The cleaning equipment according to claim 1, characterized in that, The turning buffer zone (34) includes a liquid storage area (344) located below the upper-level diversion channel, the liquid storage area (344) being configured to communicate with two lower-level diversion channels located on both sides of it respectively; the bottom end of the liquid storage area (344) is configured to be lower than the lower-level diversion channel, and the top of the liquid storage area (344) is configured to be no higher than the lower-level diversion channel; the liquid in the upper-level diversion channel is configured to flow into the liquid storage area (344), and when the liquid level in the liquid storage area (344) reaches a predetermined height, it flows to the lower-level diversion channels on both sides of it.

3. The cleaning equipment according to claim 2, characterized in that, The turning buffer zone (34) further includes 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 participate in forming a turning channel (345), the turning channel (345) is configured to extend from the upper-level diversion channel toward the liquid storage area (344), and the liquid in the upper-level diversion channel is configured to flow into the liquid storage area (344) through the turning channel (345).

4. The cleaning equipment according to claim 3, characterized in that, In the steering buffer zone (34) located at least upstream, the end of the steering channel (345) adjacent to the reservoir (344) is configured to be lower than the top of the reservoir (344) in the height direction.

5. The cleaning equipment according to claim 3, characterized in that, A baffle wall (35) is provided at the end of the upper-level diversion channel. In the extension direction of the upper-level diversion channel, one end of the turning channel (345) is configured to communicate with the position of the upper-level diversion channel that is offset from its baffle wall (35), so as to form a liquid buffer (351) in the area between the baffle wall (35) and the turning channel (345) in the upper-level diversion channel. The liquid buffer (351) is located in the extension path of the upper-level diversion channel.

6. The cleaning equipment according to claim 1, characterized in that, The liquid flow channel (33) includes at least three-stage diversion channels, which are sequentially referred to as the first-stage diversion channel (331), the second-stage diversion channel (332), and the third-stage diversion channel (333) in the direction from the inlet (31) to the outlet (32); wherein, the turning buffer (34) between the first-stage diversion channel (331) and the second-stage diversion channel (332), and between the second-stage diversion channel (332) and the third-stage diversion channel (333) are respectively referred to as the first buffer (341) and the second buffer (342); wherein, the third-stage diversion channel (333) and the second buffer (342) are constructed to be located within the extension range of the first buffer (341) in the axial direction of the roller brush (2).

7. The cleaning equipment according to claim 6, characterized in that, The liquid flow channel (33) further includes a connecting channel (334) for connecting the liquid inlet (31) and the first-stage diversion channel (331). The connecting channel (334) is configured to be lower than the first-stage diversion channel (331). A liquid inlet buffer (343) is provided at the connection position between the connecting channel (334) and the first-stage diversion channel (331). The liquid in the connecting channel (334) is configured to flow upward into the first-stage diversion channel (331) after changing the flow direction at least twice in the liquid inlet buffer (343).

8. The cleaning equipment according to claim 7, characterized in that, The connecting channel (334) is configured to be flush with the second-stage diversion channel (332); the liquid inlet buffer (343) is configured to be located within the extension range of the first buffer (341) in the axial direction of the roller brush (2).

9. The cleaning equipment according to claim 3, characterized in that, The height dimension of the steering buffer (34) located upstream is greater than the height dimension of the steering buffer (34) located downstream; and / or, the height dimension of the steering buffer (34) located at the most downstream position is less than the height dimension of the steering buffer (34) at other positions.

10. The cleaning equipment according to claim 9, characterized in that, The height dimension of the steering buffer zone (34) includes the depth of the reservoir (344) and the extension length of the steering channel (345).

11. The cleaning equipment according to claim 1, characterized in that, A liquid distribution section (36) and a guide section are provided on the liquid outlet plate (3) at the position corresponding to the liquid outlet (32). The guide section is constructed to extend from the position adjacent to the liquid outlet (32) in a way that is far away from each other, and at least two guide points (370) are formed at intervals at the end far from the liquid outlet (32). The liquid flowing out of the liquid outlet (32) is constructed to flow along the guide sections on both sides after being separated by the liquid distribution section (36).

12. The cleaning equipment according to claim 11, characterized in that, The guide portion includes guide ribs (372) located on opposite sides of the dispensing portion (36); the dispensing portion (36) is configured to extend upward from between the two guide ribs (372) to a position higher than the outlet (32); the guide ribs (372) are configured to extend obliquely in the axial direction of the roller brush (2).

13. The cleaning equipment according to claim 12, characterized in that, The guide section also includes guide surfaces (371) located on opposite sides of the liquid distribution section (36) and connected to the bottom of the guide ribs (372); a partition rib (38) is provided on the guide surface (371) at a position between adjacent liquid outlets (32), and the partition rib (38) is configured to extend from one end adjacent to the liquid outlet (32) to the edge of the liquid outlet plate (3); A scraper (4) is provided below the liquid outlet plate (3), and the scraper (4) is configured to be interference fit with the roller brush (2); the side of the scraper (4) near the roller brush (2) is configured to extend beyond the edge of the liquid outlet plate (3), and the liquid flowing down from the guide is configured to flow through the scraper (4) to the roller brush (2). The distance between the location area between the two guide points (370) and the outer edge of the scraper (4) is greater than the distance between the partition rib (38) and the outer edge of the scraper (4).

14. The cleaning equipment according to claim 1, characterized in that, Each of the diversion channels is configured to extend along the axial direction of the roller brush (2), and the upper-level diversion channel is configured to connect the middle region of the lower-level diversion channel through a turning buffer (34), wherein the liquid in the turning buffer (34) is configured to flow to the lower-level diversion channels on both sides thereof. Among them, the upstream diversion channel is configured to communicate with the inlet (31); multiple outlets (32) are provided, and multiple diversion channels located at the downstream position are configured to communicate with multiple outlets (32) respectively.

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