Cleaning device and cleaning system

The cleaning device addresses uneven water flow by using longer lines with identical flow rates and adjusted diameters to ensure balanced water distribution, enhancing usability through consistent wetting across cleaning elements.

DE202025108013U1Active Publication Date: 2026-03-12BEIJING ROCKROBO TECH CO LTD
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Utility models
Current Assignee / Owner
Filing Date
2025-12-29
Publication Date
2026-03-12

AI Technical Summary

Technical Problem

Current cleaning devices experience uneven water flow from overflow openings due to differing lengths of water supply lines, leading to imbalanced water distribution and potential single opening dispensing, which negatively impacts usability.

Method used

A cleaning device design with unequal lengths of water supply lines and adjusted flow rates, where the first line is longer than the second but maintains identical flow rates, combined with larger diameters for one hole to compensate for resistance, ensuring equal water output from both holes.

Benefits of technology

Ensures consistent wetting effect across cleaning elements, improving user experience by maintaining balanced water distribution and preventing single opening dispensing.

✦ Generated by Eureka AI based on patent content.

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Abstract

Cleaning device, characterized in that it comprises the following: a housing body provided with at least one first hole and at least one second hole; a water tank provided inside the housing body; a first conduit, wherein one end is fluidically connected to the first hole, and the other end is fluidically connected to the water tank; a second conduit, wherein one end is fluidically connected to the second hole, and the other end is fluidically connected to the water tank; wherein the length of the first pipe is greater than the length of the second pipe, wherein the flow rate within the first pipe is identical to that within the second pipe.
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Description

Technical field

[0001] The present application relates to the technical field of cleaning devices, in particular a cleaning device and a cleaning system. State of the art

[0002] With advances in technology and societal development, cleaning devices have increasingly become part of people's everyday lives. These devices include mop heads, which dispense water to the mop head during operation, thus reducing manual labor and increasing convenience.

[0003] To ensure even wetting of the mop element, cleaning devices typically have two overflow openings positioned at specific intervals. Water from the water tank is routed to these overflow openings via two separate lines. However, in current technology, the different lengths of these lines result in an uneven flow of water from the overflow openings. This imbalance can even lead to only one opening dispensing water, negatively impacting usability. Contents of the present application

[0004] To solve the above problem, namely that the different lengths of the two pipes lead to an uneven flow of water from the overflow openings and this imbalance can even result in only one opening dispensing water, which negatively affects usability, the present application provides a cleaning device and a cleaning system.

[0005] A first aspect of the present application provides a cleaning device comprising: a housing body provided with at least one first hole and at least one second hole; a water tank provided within the housing body; a first line, one end of which is fluidically connected to the first hole and the other end of which is fluidically connected to the water tank; a second line, one end of which is fluidically connected to the second hole and the other end of which is fluidically connected to the water tank; wherein the length of the first line is greater than the length of the second line, and wherein the flow rate within the first line is identical to that within the second line.

[0006] In some embodiments, the diameter of the first hole is larger than the diameter of the second hole.

[0007] In some designs, the second hole is closer to the water tank than the first hole.

[0008] In some embodiments, the cleaning device further comprises the following: a three-way tube provided with a water inlet, a first water outlet and a second water outlet, wherein the water inlet is fluidically connected to the water tank, wherein the first water outlet is fluidically connected to the first line, and wherein the second water outlet is fluidically connected to the second line.

[0009] In some embodiments, the water inlet end is located on a main pipe of the three-way pipe; or the water inlet end is located on one of the branch pipes of the three-way pipe.

[0010] In some embodiments, the height of the first water outlet differs from the height of the second water outlet, preferably being lower than the height of the second water outlet.

[0011] In some embodiments, the cleaning device further comprises the following: a connecting pipe which is fluidically connected to the water tank and the water inlet.

[0012] In some embodiments, the water tank is provided with a water inlet pipe and an overflow pipe, the overflow pipe being fluidically connected to the first line and the second line.

[0013] In some embodiments, the water inlet and overflow pipe are located at the top of the water tank.

[0014] In some embodiments, the cleaning device further comprises the following: cleaning elements provided on the housing body and on opposite sides of the housing body relative to the water tank; wherein the cleaning elements are each opposite the first hole and the second hole.

[0015] In some embodiments, the number of cleaning elements is two, wherein the cleaning elements are located on the underside of the housing body, with the two cleaning elements each opposite the first hole and the second hole.

[0016] A second aspect of the present application provides a cleaning system comprising a cleaning base station and the above-mentioned cleaning device.

[0017] In the cleaning device in one or more embodiments of the present application, the water tank is provided inside the housing body, since the housing body is provided with at least one first hole and at least one second hole. The housing body supports the water tank to ensure a stable installation of the water tank.

[0018] Since one end of the first pipe is connected to the first hole and the other end to the water tank, the first pipe carries water from the water tank to the first hole. Since one end of the second pipe is connected to the second hole and the other end to the water tank, the second pipe carries water from the water tank to the second hole.

[0019] In fluid dynamics, longer pipes generally encounter greater resistance during fluid flow because the length of the first pipe is greater than the length of the second. Therefore, the water flow in the first pipe encounters greater resistance than the water flow in the second pipe. However, since the flow rates within the first and second pipes are identical, the amount of water delivered from the first pipe to the first hole is equal to the amount delivered from the second pipe to the second hole. Consequently, the water output from the first hole is equal to that from the second hole. This ensures a comparable overall wetting effect across the cleaning elements, thus improving the user experience. Brief description of the drawings

[0020] To more clearly illustrate the technical solutions of the embodiments, the accompanying drawings, which are to be used in the embodiments of the present application, are briefly described below. Of course, the accompanying drawings described below are only some of the embodiments of the present application, and other accompanying drawings can be derived from them by a person with normal technical knowledge without any creative effort. Fig. Figure 1 shows a schematic representation of the structure of a cleaning device in one or more embodiments of the present application. Fig. Figure 2 shows an enlarged schematic representation of A of the cleaning device in Fig. 1. Fig. Figure 3 shows an enlarged schematic representation of the arrangement of a first hole and a second hole of the cleaning device in Fig. 1. Fig. Figure 4 shows a schematic representation of the water flow of the cleaning device in Fig. 1. Fig. Figure 5 shows an enlarged schematic representation of the structure of a three-way pipe of the cleaning device in Fig. 4. Reference symbol list:

[0021] 10 - Housing body, 11 - First hole, 12 - Second hole; 20 - Water tank, 21 - Water inlet hole, 22 - Overflow hole; 30 - First pipe; 40 - Second pipe; 50 - Three-way pipe, 51 - Water inlet end, 52 - First water outlet end, 53 - Second water outlet end; 60 - Connecting pipe. Detailed description

[0022] The technical solutions in the embodiments of the present application are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application, and it is clear that the described embodiments represent only one part of the embodiments of the present application and not all embodiments. Based on the embodiments of the present application, all other embodiments that could be obtained by a person skilled in the art without inventive step fall within the scope of protection of the present application.

[0023] Furthermore, the present application may contain repeated reference numbers and / or reference letters in various examples. This repetition serves the purpose of simplicity and clarity and does not in itself indicate any relationship between the various embodiments and / or settings discussed. Moreover, the present application provides various specific examples of methods and materials; however, a person skilled in the art may consider the application of other methods and / or the use of other materials.

[0024] As in the Fig. 1, Fig. 2 and Fig. Figure 3 shows an embodiment of the first aspect of the present application comprising a cleaning device comprising: a housing body 10, a water tank 20, a first line 30, and a second line 40. The housing body 10 is provided with at least one first hole 11 and at least one second hole 12. The water tank 20 is located inside the housing body 10. One end of the first line 30 is fluidically connected to the first hole 11, while the other end is fluidically connected to the water tank 20. One end of the second line 40 is fluidically connected to the second hole 12, while the other end is fluidically connected to the water tank 20. The length of the first line 30 is greater than the length of the second line 40, and the flow rate within the first line 30 is identical to that within the second line 40.

[0025] The cleaning device can be a sweeper, a mop machine, or a robotic sweeper.

[0026] The flow rates within the first line 30 and the second line 40 are identical, although not in an absolute sense. That is, the equality of the flow rates in the first line 30 and the second line 40 encompasses an approximate equivalence, whereby the tolerance range between the flow rates within the first line 30 and the second line 40 may be within 10%.

[0027] Since the housing body 10 is provided with a first hole 11 and a second hole 12, the water tank 20 is provided inside the housing body 10. The housing body 10 supports the water tank 20 to ensure a stable installation of the water tank 20.

[0028] Since one end of the first line 30 is connected to the first hole 11 and the other end to the water tank 20, the first line 30 carries water from the water tank 20 to the first hole 11. Since one end of the second line 40 is connected to the second hole 12 and the other end to the water tank 20, the second line 40 carries water from the water tank 20 to the second hole 12.

[0029] In fluid dynamics, longer pipes generally encounter greater resistance during fluid flow. Since the length of the first pipe (30) is greater than the length of the second pipe (40), the water flow in the first pipe (30) encounters greater resistance than the water flow in the second pipe (40). However, because the flow rates within the first pipe (30) and the second pipe (40) are identical, the amount of water delivered from the first pipe (30) to the first hole (11) is equal to the amount of water delivered from the second pipe (40) to the second hole (12). Consequently, the water output from the first hole (11) is equal to that from the second hole (12). This ensures a comparable overall wetting effect across the cleaning elements, thus improving the user experience.

[0030] The size of the hole diameter directly influences the fluid flow rate. The larger the hole diameter, the greater the amount of fluid that can flow through. In some embodiments, the diameter of the first hole 11 is larger than that of the second hole 12 to ensure that the flow rates in the first line 30 and the second line 40 are identical, so that the first hole 11 has a greater potential water discharge capacity compared to the second hole 12.

[0031] Due to the considerable length of the first pipe 30, which exhibits significant internal flow resistance, the diameter of the first hole 11 is larger than that of the second hole 12. This compensates for the resistance and increases the water outlet volume through the first hole 11. Thus, the water flow through the first hole 11 remains unimpeded despite the greater resistance within the first pipe 30. The water outlet volume of the first hole 11 is thereby matched to that of the second hole 12, ensuring identical flow rates within both the first pipe 30 and the second pipe 40. This guarantees comparable overall wetting effects across the cleaning elements, thereby improving the user experience.

[0032] As in the Fig. As shown in Figures 1 to 3, in some embodiments the second hole 12 is located closer to the water tank 20 than the first hole 11 to ensure that the water outlet volume from the second hole 12 corresponds to that from the first hole 11. The position of the second hole 12 relative to the first hole 11 results in a higher water pressure at the second hole 12 compared to the first hole 11, thus giving the second hole 12 a greater flow potential than the first hole 11. However, the diameter of the first hole 11 is larger than that of the second hole 12, so the water outlet volume from the first hole 11 corresponds to that from the second hole 12.

[0033] In some embodiments, the number of the first hole 11 is at least one, which means that the number of the first hole 11 can be one or more; the number of the first hole 11 can be determined according to the wetting area of ​​the cleaning element.

[0034] The number of the second hole 12 is also at least one, which means that the number of the second hole 12 can be one or more, the number of the second hole 12 can be determined according to the wetting area of ​​the cleaning element.

[0035] As in Fig. 2, Fig. 4 and Fig. Figure 5, in some embodiments, the cleaning device for conveying water from the water tank 20 to the first hole 11 and to the second hole 12 further comprises the following: a three-way pipe 50. The three-way pipe 50 is provided with a water inlet end 51, a first water outlet end 52 and a second water outlet end 53, wherein the water inlet end 51 is fluidically connected to the water tank 20, wherein the first water outlet end 52 is fluidically connected to the first line 30, and wherein the second water outlet end 53 is fluidically connected to the second line 40.

[0036] Water from the water tank 20 enters the three-way pipe 50 via the water inlet 51 and then flows through the first water outlet 52 to the first pipe 30. The first pipe 30 carries water to the first hole 11, while the second water outlet 53 carries water to the second pipe 40, and the second pipe 40 carries water to the second hole 12. This design eliminates the need for multiple water outlet holes on the water tank 20, thus ensuring the structural integrity of the water tank 20.

[0037] As in Fig. As shown in Figure 5, in some embodiments the water inlet 51 is provided on a main pipe of the three-way pipe 50 so that the water in the water tank 20 can flow unhindered into the three-way pipe 50. The water from the water tank 20 can thus flow unhindered through the water inlet 51 into the main pipe of the three-way pipe 50, which then distributes the water to the first water outlet 52 and the second water outlet 53.

[0038] Of course, in other embodiments, the water inlet 51 can be located on one of the branch pipes of the three-way pipe 50. This allows the water from the water tank 20 to flow unhindered through the water inlet 51 into one of the branch pipes of the three-way pipe 50. The water is then directed from the main pipe of a branch pipe of the three-way pipe 50 to the main pipe of the three-way pipe 50 and subsequently distributed via the main pipe of the three-way pipe 50 to the first water outlet 52 and the second water outlet 53.

[0039] In some embodiments, the first water outlet 52 is located on the main pipe of the three-way pipe 50 to enable the smooth transport of water from the main pipe of the three-way pipe 50 to the first line 30.

[0040] In other embodiments, the second water outlet 53 is naturally located on the main pipe of the three-way pipe 50 to enable the smooth transport of water from the main pipe of the three-way pipe 50 to the second pipe 40.

[0041] In some embodiments, the water inlet 51 and the first water outlet 52 are each provided at opposite ends of the main pipe of the three-way pipe 50, while the second water outlet 53 is provided on one of the branch pipes of the three-way pipe 50, thereby forming a T-shaped three-way pipe to facilitate the smooth flow of water through the three-way pipe 50.

[0042] As in the Fig. 1 and Fig. As shown in Figure 2, in some embodiments the height of the first water outlet 52 differs from the height of the second water outlet 53 to ensure equal flow rates within the first line 30 and the second line 40, preferably with the height of the first water outlet 52 being lower than the height of the second water outlet 53. According to the principles of hydrostatics, a natural pressure difference arises between the first water outlet 52 and the second water outlet 53. This pressure difference can be used to regulate the flow rate. Under the combined effect of this pressure difference and gravity, the water flowing from the second water outlet 53 has a higher pressure than the water flowing from the first water outlet 52.This ensures that the flow rate of the water entering the first line 30 via the first water outlet 52 meets the required specifications, thereby maintaining equal flow rates in both the first line 30 and the second line 40.

[0043] As in the Fig. 1 and Fig. As shown in Figure 4, in some embodiments the cleaning device for conveying water from the water tank 20 to the three-way pipe 50 further comprises the following: a connecting pipe 60. The connecting pipe 60 fluidically connects the water tank 20 and the water inlet end 51 and conveys water from the water tank 20 through the water inlet end 51 to the three-way pipe 50.

[0044] The connecting pipe 60 can be a U-shaped pipe that can adapt to different installation environments and spatial constraints to facilitate the connection between the three-way pipe 50 and the water tank 20.

[0045] As in Fig. As shown in Figure 1, in some embodiments the water tank 20 comprises a water inlet pipe 21 and an overflow pipe 22 to facilitate the transfer of water from the water tank 20 to the first line 30 and to the second line 40. The overflow pipe 22 is connected to both the first line 30 and the second line 40.

[0046] Water can be drawn from an external source into water tank 20 via the water inlet pipe 21. The water in water tank 20 can then be directed via the overflow pipe 22 to both the first pipe 30 and the second pipe 40. The first pipe 30 directs the water to the first hole 11, while the second pipe 40 directs the water to the second hole 12.

[0047] If the cleaning device includes a three-way pipe 50, the overflow hole 22 is fluidically connected to the three-way pipe 50.

[0048] In some embodiments, the water inlet hole 21 is provided at the top of the water tank 20 to ensure unimpeded water entry into the water tank 20. This allows water to flow in from the top of the water tank 20. Under the influence of gravity, the water falls naturally into the water tank 20 without being affected by the water pressure within the tank, thus ensuring a stable water flow.

[0049] Furthermore, the position of the water inlet hole 21 at the top of the water tank 20 allows water to flow in from the top. This ensures a relatively even water level inside the water tank 20 during filling, thus making optimal use of the storage capacity of the water tank 20.

[0050] As in the Fig. 1 and Fig.As shown in Figure 2, in some embodiments the overflow hole 22 is provided at the top of the water tank 20 to ensure a stable water supply to the first line 30 and the second line 40 from the water tank 20. After water enters the water tank 20 through the water inlet hole 21, the water tank 20 gradually fills. When the water tank 20 is full, the water inlet hole 21 continues to supply water, which can lead to excessive internal pressure in the water tank 20. At this point, the water in the water tank 20 is directed through the overflow hole 22 into both the first line 30 and the second line 40, thereby equalizing the pressure and ensuring a stable water supply to the first line 30 and the second line 40.

[0051] In some embodiments, the cleaning device, to facilitate the water supply to various areas of a cleaning element, further comprises the following: cleaning elements. The cleaning elements are provided on the housing body 10 and on opposite sides of the housing body 10 relative to the water tank 20. The cleaning elements are located opposite the first hole 11 and the second hole 12. The cleaning element may be a mop.

[0052] The first hole 11 supplies the area in the cleaning element corresponding to the first hole 11 with water conveyed through the first line 30, and the second hole 12 supplies the area in the cleaning element corresponding to the second hole 12 with water conveyed through the second line 40. Since the length of the first line 30 is greater than the length of the second line 40, the flow rate in the first line 30 and in the second line 40 is the same. Therefore, the amount of water delivered from the first hole 11 can be the same as the amount of water delivered from the second hole 12, so that the amount of water supplied to the different areas of the cleaning element from the first hole 11 and the second hole 12 is comparable, ensuring that the overall wetting effect of the cleaning element is similar and improving the user experience when using the cleaning element.

[0053] In some embodiments, the cleaning device further comprises the following to facilitate the water supply to various cleaning elements: cleaning elements. The number of cleaning elements is two, wherein the cleaning elements are located on the underside of the housing body 10, with the two cleaning elements each opposite the first hole 11 and the second hole 12.

[0054] The first hole 11 supplies the cleaning element opposite the first hole 11 with water conveyed through the first line 30, and the second hole 12 supplies the other cleaning element opposite the second hole 12 with water conveyed through the second line 40. Since the length of the first line 30 is greater than the length of the second line 40, the flow rate in the first line 30 and the second line 40 is the same. Therefore, the amount of water delivered from the first hole 11 can be the same as the amount of water delivered from the second hole 12, so that the amount of water supplied to the two cleaning elements of the cleaning element from the first hole 11 and the second hole 12 is comparable, ensuring that the wetting effect of the two cleaning elements is similar and improving the user experience when using the cleaning element.

[0055] The embodiment of the second aspect of the present application provides a cleaning system comprising a cleaning base station and the above cleaning device.

[0056] In the present application, "above" or "below" the first feature of the second feature can indicate direct contact between the first and second features. It can also mean that the first and second features are not in direct contact, but are connected by another feature between them, unless expressly provided and limited otherwise. Furthermore, the first feature being "above," "above," or "above" the second feature can mean that the first feature is located directly or obliquely above the second feature, or simply that the first feature is horizontally higher than the second feature. The first feature being "below" or "below" the second feature can mean that the first feature is located directly or obliquely below the second feature, or simply that the first feature is horizontally lower than the second feature.

[0057] In the description of the present application, it should be understood that the terms, e.g., "middle", "longitudinal", "transverse", "length", "width", "thickness", "top", "bottom", "front", "back", "left", "right", "vertical", "horizontal", "above", "below", "inside", "outside", "clockwise", "counterclockwise", which indicate the orientation or positional relationship, are based on the orientation or positional relationship shown in the attached drawings, serve only for the sake of simplicity and to simplify the description of the present application, and do not indicate or imply that the device or element referred to must have a particular orientation or be designed and operated with a particular orientation, and are therefore not to be understood as a limitation of the present application.

[0058] It should be noted that in embodiments of the present application that include directional information, this information serves only to explain the relative positional relationships, movements, etc., between the various components in a specific position. If the respective position is changed, the directional information changes accordingly.

[0059] In the present application, it should be noted that the terms, e.g., "connected" and "attached," are to be interpreted broadly, unless expressly stated otherwise and limited, e.g., as either a permanent connection, a detachable connection, or a connection in one piece; a mechanical connection or an electrical connection; a direct connection or an indirect connection via an intermediate medium, or a connection within two elements, unless expressly stated otherwise. The specific meaning of the above terms in the present application is clear to a person competent in the field.

[0060] In the embodiments of this application, where descriptions such as "first," "second," etc., are used, this serves only to indicate the relative importance of features such as "first," "second," etc., and is not to be understood as specifying their relative importance or implicitly determining the number of technical features specified. Consequently, features marked "first" or "second" may expressly or implicitly include one or more of these features. In the description of this application, "a plurality of" means two or more unless expressly defined otherwise.

[0061] In this application, the terms “an embodiment”, “some embodiments”, “example”, “specific example” or “a particular example”, “an embodiment”, “some examples”, “exemplary”, “specific examples” or “some examples” mean that certain features, structures, materials or properties described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this description, the schematic expressions of the above terms need not refer to the same embodiments or examples. Furthermore, the described specific features, structures, materials or properties may be combined appropriately in one or more embodiments.Furthermore, the person skilled in the art can combine different embodiments and features of different embodiments described in this description.

[0062] The technical solutions disclosed herein can be combined between different embodiments, provided that the combination is recognizable to a person skilled in the art without inventive step and is technically compatible. If the combination is contradictory or technically unfeasible, it does not fall within the scope of protection of this application.

[0063] Although embodiments of the present application have been shown and described, it is apparent to the person skilled in the art that numerous variations, modifications, substitutions, and changes are possible without departing from the principles and spirit of the application. The scope of protection is determined by the granted claims and their technical equivalents.

Claims

[1] Cleaning device, characterized by , that it includes the following: a housing body provided with at least one first hole and at least one second hole; a water tank provided inside the housing body; a first conduit, wherein one end is fluidically connected to the first hole, and the other end is fluidically connected to the water tank; a second conduit, wherein one end is fluidically connected to the second hole, and the other end is fluidically connected to the water tank; wherein the length of the first pipe is greater than the length of the second pipe, wherein the flow rate within the first pipe is identical to that within the second pipe. [2] Cleaning device according to claim 1, wherein the hole diameter of the first hole is larger than the hole diameter of the second hole. [3] Cleaning device according to claim 1 or 2, characterized bythat the second hole is closer to the water tank than the first hole. [4] Cleaning device according to any one of claims 1 to 3, characterized by , that the cleaning device further includes the following: a three-way pipe, which is provided with a water inlet end, a first water outlet end and a second water outlet end, wherein the water inlet end is fluidically connected to the water tank, wherein the first water outlet end is fluidically connected to the first pipe, and wherein the second water outlet end is fluidically connected to the second pipe. [5] Cleaning device according to claim 4, characterized by that the water inlet is located on a main pipe of the three-way pipe; or that the water inlet is located on one of the branch pipes of the three-way pipe. [6] Cleaning device according to claim 4 or 5, characterized bythat the height of the first water outlet differs from the height of the second water outlet, preferably the height of the first water outlet being smaller than the height of the second water outlet. [7] Cleaning device according to any one of claims 1 to 6, characterized by , that the cleaning device further comprises the following: a connecting pipe which is fluidically connected to the water tank and the water inlet. [8] Cleaning device according to any one of claims 1 to 7, characterized by that the water tank is equipped with a water inlet pipe and an overflow pipe, the overflow pipe being fluidically connected to the first line and the second line. [9] Cleaning device according to claim 8, characterized by that the water inlet and overflow pipe are located on the top of the water tank. [10] Cleaning device according to any one of claims 1 to 9, characterized by, that the cleaning device further includes the following: Cleaning elements provided on the housing body and on opposite sides of the housing body relative to the water tank; wherein the cleaning elements are opposite the first hole and the second hole. [11] Cleaning device according to any one of claims 1 to 10, characterized by that the number of cleaning elements is two, wherein the cleaning elements are located on the underside of the housing body, with the two cleaning elements each opposite the first hole and the second hole. [12] Cleaning system, characterized by , that it comprises a cleaning base station and a cleaning device according to any one of claims 1 to 11.