A window cleaning robot

Abstract

The application provides a window cleaning robot, comprising an adsorption assembly and a cleaning assembly arranged adjacently, the adsorption assembly is used for adsorbing the window cleaning robot on the surface of a cleaning plane; the cleaning assembly comprises a roller, a liquid supply assembly and a dirt scraping assembly, the dirt scraping assembly is used for scraping the cleaning dirty liquid on the roller away from the roller, the dirt scraping assembly is located between the adsorption assembly and the roller, and the liquid supply assembly is located on the side of the roller away from the cleaning plane; when the window cleaning robot is in a normal cleaning operation process, the roller assumes an upright extending posture. Compared with the prior art, for the window cleaning robot with the roller working in a vertical scene, the application provides the liquid supply assembly arranged along the extending direction of the roller, through the liquid supply assembly, the cleaning liquid can be directly sprayed to the roller, so that the roller is first wetted, and then the surface to be cleaned is cleaned through the roller, the dirt scraping assembly scrapes the cleaning dirty liquid on the roller away from the roller, so that the roller achieves a better cleaning effect, and the cleaning efficiency is better.

Description

Technical Field

[0001] This application relates to the field of cleaning equipment, specifically to a window cleaning robot. Background Technology

[0002] Window cleaning robots are devices designed to autonomously complete cleaning tasks and are suitable for various cleaning scenarios. Based on different specific application scenarios, window cleaning robots have been developed to suit various cleaning situations. For example, a window cleaning robot is a self-propelled and autonomously judgment-based cleaning device specifically designed for window cleaning; its working environment generally requires it to be in a vertical suction position.

[0003] Current window cleaning robots typically rely on a cloth attached to the side of the glass to wipe away dust. Without changing and washing the cloth, these robots generally cannot clean the window thoroughly in one pass, requiring one or more cloth replacements or changes of washed cloths during operation. This extra work usually requires manual intervention, which is time-consuming and labor-intensive, significantly reducing the automation level of the window cleaning robot. To address these issues, a design solution has been proposed that adds a roller device to the existing system. This type of window cleaning robot can spray water onto the glass surface, and the rollers clean the surface. Since the rollers remove most of the dirt, the cloth only needs secondary cleaning, significantly reducing the amount of dirt on the cloth and greatly decreasing the frequency of cloth washing, thus improving the automation level of the operation.

[0004] However, this design also has significant problems; one obvious problem is that there is a time difference between the sprayed cleaning agent and the rolling cleaning of the roller. Since the working environment is vertical, the cleaning agent flows downward along the smooth cleaning surface, which is not easy to match with the rolling cleaning time of the roller, resulting in poor cleaning effect and poor cleaning efficiency. Utility Model Content

[0005] This application provides a window cleaning robot to solve the problems of mismatch between the roller sweeping action and the cleaning agent in existing window cleaning robots, poor cleaning effect, and poor cleaning efficiency.

[0006] This application provides a window cleaning robot, including an adsorption component and a cleaning component arranged adjacent to each other. The adsorption component is used to adsorb the window cleaning robot onto the surface to be cleaned. The cleaning component includes a roller, a liquid supply component, and a scraping component. The scraping component is used to scrape the cleaning liquid off the roller. The scraping component is located between the adsorption component and the roller. The liquid supply component is located on the side of the roller away from the surface to be cleaned. When the window cleaning robot is in normal cleaning operation, the roller is in a vertically extended position.

[0007] Optionally, the liquid supply assembly is arranged along the extension direction of the roller and includes at least one liquid supply line, the liquid supply line including an inlet and a first outlet, the inlet being positioned higher than the first outlet; the flow path of the cleaning liquid passes through the inlet and is sprayed onto the roller through the first outlet.

[0008] Optionally, the liquid supply pipeline includes multiple branch pipelines; each branch pipeline is provided with at least one first liquid outlet, and the multiple first liquid outlets are arranged at intervals along the extension direction of the roller; each branch pipeline has the same volume.

[0009] Optionally, the liquid supply pipeline includes multiple liquid inlets and multiple sets of branch pipelines, each liquid inlet corresponding to a set of branch pipelines, and each set of branch pipelines having multiple first liquid outlets.

[0010] Optionally, each group of branch pipes has two first liquid outlets, located at the ends of two branch pipes of that group of branch pipes.

[0011] Optionally, each group of branch pipes has three first liquid outlets, which are arranged at intervals along the extension direction of the roller. The first liquid outlet at the highest point is located at the end of the middle branch pipe of the group of branch pipes, and the other two first liquid outlets are located at the ends of the branch pipes on both sides of the middle branch pipe.

[0012] Optionally, the device further includes: a liquid storage tank and a sludge storage tank, wherein the liquid storage tank stores the cleaning liquid supplied to the liquid supply pipeline; the sludge storage tank stores the cleaning sludge flowing through the roller; when the window cleaning robot is in normal cleaning operation, the liquid storage tank is located above the adsorption component, the sludge storage tank is located below the adsorption component, and the roller is located on the same side of the liquid storage tank and the sludge storage tank.

[0013] Optionally, it also includes: a cleaning fluid pumping mechanism; a second outlet is provided at the lowest position of the storage tank when the window cleaning robot is in normal cleaning operation; the inlet of the cleaning fluid pumping mechanism is connected to the second outlet through a pipeline, and the outlet of the cleaning fluid pumping mechanism is connected to the inlet of the supply pipeline through a pipeline; the pumping force provided by the cleaning fluid pumping mechanism can pump the cleaning fluid in the storage tank to the inlet as needed, and spray it out to the roller through the first outlet.

[0014] Optionally, a sludge collection tank is also included; the sludge collection tank is used to collect the cleaning liquid that flows out after passing through the roller; when the window cleaning robot is in the normal cleaning operation process, the sludge collection tank is located at the lower end of the cleaning assembly; the bottom of the sludge collection tank has an inclined plane, and a sludge extraction port is opened at the lowest point of the plane.

[0015] Optionally, it also includes a wastewater negative pressure mechanism, which generates negative pressure to draw the cleaning wastewater accumulated in the collection tank from the sludge extraction port into the wastewater storage tank. The inlet of the wastewater negative pressure mechanism is connected to the outlet of the wastewater storage tank through a pipeline, and the outlet of the wastewater negative pressure mechanism is connected to the overflow nozzle provided on the liquid supply assembly through a pipeline. When the cleaning wastewater in the wastewater storage tank is full, the cleaning wastewater can be guided to flow out from the overflow nozzle through the pipeline from the outlet of the wastewater storage tank.

[0016] Compared with the prior art, this application has the following advantages:

[0017] This application provides a window cleaning robot, including an adsorption component and a cleaning component arranged adjacent to each other. The adsorption component is used to adsorb the window cleaning robot onto the surface to be cleaned. The cleaning component includes a roller, a liquid supply component, and a scraping component. The scraping component is used to scrape the cleaning liquid off the roller and is located between the adsorption component and the roller. The liquid supply component is located on the side of the roller away from the surface to be cleaned. When the window cleaning robot is in normal cleaning operation, the roller is in a vertically extending posture. Compared with the prior art, this application provides a liquid supply component arranged along the extension direction of the roller for a window cleaning robot with a roller working in a vertical environment. Through this liquid supply component, cleaning liquid can be sprayed directly onto the roller, thereby first wetting the roller, and then cleaning the surface to be cleaned through the roller. The scraping component scrapes the cleaning liquid off the roller, resulting in a better cleaning effect and higher cleaning efficiency. Attached Figure Description

[0018] Figure 1 This is a front perspective view of the window cleaning robot according to an embodiment of this application.

[0019] Figure 2 This is a perspective view of the rear of the window cleaning robot according to an embodiment of this application.

[0020] Figure 3 These are front and side views of the liquid supply assembly of the window cleaning robot according to an embodiment of this application.

[0021] Figure 4 This is a schematic diagram of the branch pipeline of the liquid supply component of the window cleaning robot according to an embodiment of this application.

[0022] Figure 5 This is a schematic diagram of the liquid storage tank of the window cleaning robot according to an embodiment of this application.

[0023] Figure 6 These are perspective and top views of the cleaning components of the window cleaning robot according to an embodiment of this application.

[0024] Figure 7 This is a cross-sectional view of the dirt collection tank of the window cleaning robot according to an embodiment of this application.

[0025] Figure 8 This is a schematic diagram of the sludge storage tank of the window cleaning robot according to an embodiment of this application.

[0026] Figure 9 This is a cross-sectional view of the sludge collection tank of the window cleaning robot according to an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Liquid supply strip; 2. Liquid storage tank; 3. Sludge storage tank; 4. Roller; 5. Scraper; 6. Sludge collection trough; 7. Air pump; 8. Water pump;

[0029] Liquid inlets 1-1, 1-3, 1-5, 1-6; overflow nozzle 1-2; wastewater nozzle 1-4; liquid supply lines 110, 130, 150, 160; first liquid outlets 151, 152, 153;

[0030] Second liquid outlet 2-1; Low liquid level detection component 2-2; Overflow outlet 2-3;

[0031] 3-1 outlet of waste storage tank; 3-2 inlet of waste storage tank; 3-3 check valve; 3-4 full liquid detection component; 3-5 level line;

[0032] 5-1 flow guide channel;

[0033] Sloping surface of the sludge collection trough 6-1; Lowest position of the sludge collection trough 6-2; Sludge extraction port 6-3. Detailed Implementation

[0034] Many specific details are set forth in the following description to provide a full understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this application; therefore, this application is not limited to the specific embodiments disclosed below.

[0035] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. The descriptive terms used in this application and the appended claims, such as "a," "first," and "second," are not intended to limit quantity or sequence, but rather to distinguish information of the same type from one another.

[0036] The window cleaning robot provided in this application includes an adsorption component and a cleaning component arranged adjacent to each other. The adsorption component is used to adsorb the window cleaning robot onto the surface to be cleaned. The cleaning component includes a roller, a liquid supply component, and a scraping component. The scraping component is used to scrape the cleaning liquid off the roller and is located between the adsorption component and the roller. The liquid supply component is located on the side of the roller away from the surface to be cleaned. When the window cleaning robot is in normal cleaning operation, the roller is in a vertically extended position.

[0037] The window cleaning robot includes a cleaning assembly. The core component of the cleaning assembly is a roller, and it also includes related components for driving the roller's rotation. When the window cleaning robot is in normal cleaning operation, the roller of the cleaning assembly is in a vertical position.

[0038] The first embodiment of this application is a window cleaning robot; its specific structure is as follows: Figure 1 and Figure 2 As shown.

[0039] Figure 1 This is a front perspective view of the window cleaning robot, specifically a perspective view of the window cleaning robot from a plane that is far from the work surface when it is in operation. Figure 2 This is a 3D view of the back of a window cleaning robot, specifically a 3D view of the plane closest to the work surface when it is in operation. For example... Figure 1 As shown, the cleaning assembly is arranged on one side of the window cleaning robot. Its core working component is the roller 4, and it also includes a drive component that drives the roller 4 to rotate. Since this is a common technology, it will not be shown in detail here. In this embodiment, the core working component of the liquid supply assembly is the liquid supply strip 1, which is arranged parallel to the extension direction of the roller 4 of the cleaning assembly. The liquid supply pipeline is located inside the liquid supply strip 1. When the window cleaning robot is in normal cleaning operation, the roller 4 is in a vertical position, and the window cleaning robot moves in a horizontal direction, using the rolling of the roller 4 to clean the working surface, such as the glass surface.

[0040] Unlike traditional floor scrubbers with horizontally arranged water channels, the window cleaning robot provided in this application has its liquid supply pipeline vertically relative to the ground during normal cleaning operations. This allows the pressure of the cleaning fluid itself to overcome atmospheric pressure, making it easier for the lower-end outlets to spray the cleaning fluid, thus reducing the burden on the pump. Because the liquid supply pipeline is vertical, if different cleaning fluid outlets are located at different heights along the same pipeline, the pressure at each outlet will vary, making it difficult to spray the cleaning fluid evenly. This results in inconsistent humidity at different locations on the roller, leading to poor cleaning performance. To ensure that each outlet can spray the cleaning fluid evenly, this embodiment further provides a segmented liquid supply pipeline solution.

[0041] The liquid supply assembly is arranged along the extension direction of the roller of the cleaning assembly, and includes at least one liquid supply line, which includes an inlet and a first outlet. The inlet is positioned higher than the first outlet, and the flow path of the cleaning liquid passes through the inlet and is sprayed onto the roller through the first outlet.

[0042] The liquid supply pipeline may also include multiple branch pipelines, each branch pipeline being provided with at least one first liquid outlet, and the multiple first liquid outlets being arranged at intervals along the extension direction of the roller.

[0043] The liquid supply pipeline may also include multiple liquid inlets and multiple sets of branch pipelines, with each liquid inlet corresponding to a set of branch pipelines, and each set of branch pipelines having multiple first liquid outlets.

[0044] like Figure 3 As shown, each group of branch pipes has three first liquid outlets, which are arranged at intervals along the extension direction of the roller. The first liquid outlet at the highest point is located at the end of the middle branch pipe of the group of branch pipes, and the other two first liquid outlets are located at the ends of the branch pipes on both sides of the middle branch pipe. Figure 3 These are the front and side views of the liquid supply assembly. The liquid supply strip 1 is the core of the assembly, arranged along the extension direction of the roller 4. Liquid supply lines are provided within the liquid supply strip 1, and these lines can include multiple branch lines, which can be a single group or multiple groups. To ensure uniform spraying of cleaning liquid from each outlet, in this embodiment, the liquid supply strip 1 is provided with four groups of liquid supply branch lines 110, 130, 150, and 160. Each group of liquid supply branch lines includes an inlet and a first outlet. The inlet is located at the high end of each group of liquid supply branch lines, generally near the highest point, or what can be called the "higher end." "Higher" means it is positioned higher than other parts of the liquid supply branch line. Figure 3 As shown, the inlets are 1-1, 1-3, 1-5, and 1-6. The cleaning fluid flows through the inlets, entering each set of supply branch lines. After flowing through each branch line, it is sprayed out through the first outlet to the roller 4. Each set of supply branch lines can contain multiple branch lines, such as... Figure 3 As shown, in this embodiment, each set of liquid supply branch pipes is equipped with three branch pipes: left, middle, and right. When the window cleaning robot is in the normal cleaning operation process, the first liquid outlet is located at the end of each branch pipe. Taking a set of liquid supply branch pipes 150 as an example, its first liquid outlets are 151, 152, and 153, respectively. Figure 3 In the middle, the three sets of liquid supply branch pipes 130, 150 and 160 are completely identical. Due to space constraints, the liquid supply branch pipe 110 has its inlet located at the lower end of the middle branch pipe, which is slightly lower than the highest end. The first outlet is set at the end of the branch pipes on both sides of this set of liquid supply branch pipes.

[0045] Each branch pipeline group can also have two first liquid outlets, located at the ends of the two branching pipelines of that group. For example... Figure 4 As shown, this group of branch pipelines has two branch pipelines, and the two first liquid outlets are located at the ends of the two branch pipelines respectively.

[0046] In a further preferred embodiment, each branch pipe has the same volume, ensuring that the volume of cleaning fluid flowing from each first outlet is identical. For example, suppose a certain supply pipe is as follows... Figure 4 As shown, the liquid supply pipeline includes two branch pipelines, with the first outlet located at the end (lower end) of each branch pipeline. To ensure that the volume of cleaning liquid flowing from each first outlet of the liquid supply pipeline is the same, branch pipeline A and branch pipeline B are designed to have the same volume. Branch pipeline A has a cross-sectional length of a1 and a width of b1, and the height difference between the first outlet and inlet of branch pipeline A is h1. Branch pipeline B has a cross-sectional length of a2 and a width of b2, and the height difference between the first outlet and inlet of branch pipeline B is h2. Branch pipeline A and branch pipeline B satisfy the following equation: a1 b1 h1=a2 b2 h2 means that branch pipe A and branch pipe B have the same volume. For example, h2 = 2. If h1 = a1 = a2, then b1 = 2 b2.

[0047] Preferably, the first outlet of each branch pipe in each group of liquid supply branch pipes can be evenly arranged along the extension direction of the drum 4, so that the cleaning liquid can be evenly sprayed onto the drum 4, improving the cleaning effect. More specifically, as described above... Figure 3 For example, the liquid supply branch pipeline is set in multiple groups, each group containing one or more branch pipelines. Each branch pipeline has a first outlet at its end, and the first outlets of each branch pipeline are evenly spaced along the extension direction of the roller 4. Combined with the above-mentioned arrangement of having the same volume for each branch pipeline, this ensures that the pressure of each first outlet of the entire liquid supply strip 1 is consistent, thus ensuring a consistent liquid output. Dividing the liquid supply branch pipeline into multiple groups, with each group having a relatively short liquid supply branch pipeline, ensures that each first outlet can always output water quickly, without the intermittent liquid output caused by excessively long liquid supply branch pipelines.

[0048] Specifically, in the preferred embodiment of this application, the liquid supply branch pipeline is configured as multiple segments, and the liquid inlet method is segmented liquid inlet. Each inlet is located at a relatively high end of its respective liquid supply branch pipeline. Under the action of pumping pressure, the cleaning liquid enters each vertical liquid supply branch pipeline from the inlet, and then flows out from the first outlet located at the end of each branch pipeline under the action of gravity and pumping pressure. By setting up segmented liquid supply branch pipelines, it can be ensured that the cleaning liquid can flow out from each first outlet. When the volume of each branch pipeline is equal, the pressure of each first outlet is equal, and the liquid output of each first outlet is also equal. When the first outlets of each branch pipeline are evenly spaced in the extension direction of the roller 4, the cleaning liquid can be evenly distributed on the roller 4, thereby improving the cleaning degree and ensuring the cleaning quality.

[0049] The window cleaning robot provided in this application embodiment, such as Figure 1 As shown, it also includes a liquid storage tank and a sludge storage tank. The liquid storage tank stores the cleaning liquid supplied to the liquid supply pipeline, and the sludge storage tank stores the cleaning sludge that flows through the roller. When the window cleaning robot is in normal cleaning operation, the liquid storage tank is located above the adsorption assembly, the sludge storage tank is located below the adsorption assembly, and the roller is located on the same side as the liquid storage tank and the sludge storage tank.

[0050] The window cleaning robot provided in this embodiment also includes a cleaning fluid pumping mechanism. A second outlet is located at the lowest point of the storage tank during normal cleaning operation. The inlet of the cleaning fluid pumping mechanism is connected to the second outlet via a pipeline, and the outlet of the cleaning fluid pumping mechanism is connected to the inlet of the supply pipeline via a pipeline. The pumping force provided by the cleaning fluid pumping mechanism can pump the cleaning fluid from the storage tank to the inlet as needed, and then spray it onto the roller through the first outlet.

[0051] The reservoir 2 stores the cleaning fluid, such as clean water or a special cleaning solution, supplied to the fluid supply line. Figure 5 The specific structure of the liquid storage tank 2 is shown.

[0052] like Figure 5 As shown, when the window cleaning robot is in operation, a second outlet 2-1 is located at the lowest end of the liquid storage tank 2. There can be multiple second outlets 2-1. The liquid storage tank also has an overflow outlet 2-3, which is located at the highest end of the liquid storage tank 2 during normal cleaning operations. The overflow outlet 2-3 is connected to an overflow nozzle 1-2 on the liquid supply assembly via a pipeline. When the cleaning liquid in the storage tank overflows, it can flow out through the overflow outlet 2-3 and the pipeline from the overflow nozzle 1-2, preventing the cleaning liquid from entering the interior of the window cleaning robot body and causing damage.

[0053] The cleaning fluid pumping mechanism 8 can be a water pump. The inlet of the water pump 8 is connected to the second outlet 2-1 of the storage tank via a pipeline, and the outlet of the water pump 8 is connected to the inlet of the supply pipeline via a pipeline. For example, the outlet of the water pump 8 is connected to one end of a flexible hose, and the other end of the flexible hose is connected to a tee. The other two outlets of the tee are connected to inlets 1-1 and 1-3, respectively. In addition, tee connections can be set in other locations to branch more pipelines to other inlets. With the pumping force provided by the water pump 8, the cleaning fluid in the storage tank can be pumped to each inlet as needed, and then sprayed onto the roller 4 through the first outlet via each of the aforementioned supply pipelines.

[0054] As a preferred embodiment, the storage tank 2 is also equipped with a low-level detection component 2-2 to prevent the level of cleaning fluid stored in the storage tank 2 from becoming too low. When the level of cleaning fluid stored in the storage tank 2 falls below a preset value, the window cleaning robot issues an alarm, prompting the user that the level of cleaning fluid in the storage tank 2 is below the preset value and that the user needs to add cleaning fluid. For example, the window cleaning robot can be placed on a base station, and the cleaning fluid can be added to the storage tank 2 through the base station. The low-level detection component 2-2 can be implemented in various ways under existing technology, such as using a float sensor, a capacitive sensor, or a photoelectric sensor.

[0055] As a further preferred embodiment, the storage tank 2 is also equipped with a high-level detection component to prevent the cleaning fluid level in the storage tank 2 from becoming too high, causing the cleaning fluid to overflow from the overflow port 2-3. When the level of the cleaning fluid stored in the storage tank exceeds a preset value, the window cleaning robot issues an alarm warning, prompting the user that the cleaning fluid level in the storage tank 2 is higher than the preset value and prompting the user to stop adding cleaning fluid. The high-level detection component can also be implemented in various ways under existing technology, such as using a float sensor, a capacitive sensor, or a photoelectric sensor.

[0056] The window cleaning robot provided in this application embodiment, such as Figure 2 and Figure 6 As shown, the scraping assembly includes a scraper 5, which is inserted into the bristles of the roller 4 to form an interference fit. When the roller 4 rotates, the scraper 5 can scrape the cleaning liquid off the roller 4.

[0057] In the preferred embodiment provided in this application, the scraper 5 is provided with segmented guide grooves 5-1. The guide grooves 5-1 can be configured in a sawtooth shape, with each sawtooth sloping downwards from the end of the scraper 5 that contacts the roller 4 (during normal cleaning operations), guiding the cleaning fluid scraped off the roller 4 through the guide grooves 5-1 into the collection tank 6. The cleaning fluid scraped off the roller 4 is guided by the segmented guide grooves 5-1 and flows downwards under the action of gravity, eventually flowing into the collection tank 6 located at the bottom of the roller 4. The guide grooves 5-1 can be configured to be embedded in the surface of the scraper 5 or protrude from the surface of the scraper 5.

[0058] The window cleaning robot provided in this application embodiment also includes a waste liquid recovery device, which can realize the recovery of cleaning waste liquid flowing out after passing through the roller 4.

[0059] The wastewater recovery device includes a wastewater collection tank 6, which collects the cleaning wastewater flowing out after passing through the roller. During normal cleaning operation, the wastewater collection tank is located at the lower end of the cleaning assembly. The bottom of the wastewater collection tank has a sloping plane, and a wastewater extraction port is opened at the lowest point of the plane.

[0060] The sludge collection tank 6 is used to collect the cleaning fluid scraped off the roller 4 by the scraper 5. For example... Figure 2 As shown, during normal cleaning operation, the dirt collection tank 6 is located at the lower end of the cleaning assembly. Figure 7 As shown, the bottom of the sludge collection tank has an inclined plane 6-1, at the lowest point of which a sludge extraction port 6-3 is provided. The sludge collection tank 6 has bearing positions for mounting the rollers. During normal cleaning operation, the rollers 4 are in a vertical position, and the cleaning fluid scraped off from the rollers 4 flows downwards under gravity. The sludge collection tank 6 is located at the lowest end of the cleaning assembly, and all cleaning fluid eventually flows into the sludge collection tank 6. The bottom of the sludge collection tank has an inclined plane 6-1, and the cleaning fluid entering the sludge collection tank 6 flows along the inclined plane 6-1 under gravity, eventually collecting at the lowest position 6-2 of the sludge collection tank 6. A sludge extraction port 6-3 is provided at the lowest position 6-2 of the sludge collection tank 6 so that the cleaning fluid can be transferred from the sludge collection tank 6 to the sludge storage tank 3 through the sludge extraction port 6-3, preventing excessive cleaning fluid from accumulating in the sludge collection tank 6 and causing leakage and secondary pollution.

[0061] The wastewater recovery device also includes a wastewater storage tank with an arc-shaped structure. When the window cleaning robot is in normal cleaning operation, the inlet and outlet of the wastewater storage tank are located on both sides of the arc-shaped structure, and the inlet of the wastewater storage tank is lower than the outlet of the wastewater storage tank.

[0062] like Figure 8As shown, the sludge storage tank 3 is equipped with an arc-shaped structure. When the window cleaning robot is in the normal cleaning operation, the sludge storage tank inlet 3-2 and the sludge storage tank outlet 3-1 are located on both sides of the arc-shaped structure. The sludge storage tank outlet 3-1 is located at the highest position of the sludge storage tank 3, and the sludge storage tank inlet 3-2 is lower than the sludge storage tank outlet 3-1.

[0063] The wastewater recovery device also includes a wastewater negative pressure mechanism. The negative pressure generated by this mechanism draws the accumulated cleaning wastewater in the collection tank from the suction port into the storage tank. The inlet of the wastewater negative pressure mechanism is connected to the outlet of the storage tank via a pipeline, and the outlet of the mechanism is connected to an overflow nozzle installed on the liquid supply assembly via a pipeline. When the storage tank overflows with cleaning wastewater, it can be guided out through the pipeline from the outlet of the storage tank and out of the overflow nozzle.

[0064] The wastewater storage tank 3 stores the cleaning wastewater flowing through the roller 4. The negative pressure generated by the wastewater negative pressure mechanism 7 causes the cleaning wastewater accumulated in the wastewater collection tank 6 to be drawn from the wastewater extraction port 6-3 into the wastewater storage tank 3.

[0065] like Figure 9 As shown, the inlet 3-2 of the sludge storage tank is equipped with a one-way valve 3-3 with its opening facing the inside of the sludge storage tank 3. When the sludge negative pressure mechanism 7 is working, the one-way valve 3-3 is open; when the sludge negative pressure mechanism 7 is not working, the one-way valve 3-3 is closed. In this embodiment, the one-way valve 3-3 can be a duckbill valve.

[0066] like Figure 1 As shown, the inlet of the wastewater negative pressure mechanism 7 is connected to the outlet 3-1 of the wastewater storage tank via a pipeline. The outlet of the wastewater negative pressure mechanism 7 is connected to the overflow nozzle 1-4 installed on the liquid supply assembly via a pipeline. When the wastewater in the wastewater storage tank 3 is full, the wastewater can be guided out of the overflow nozzle 1-4 through the pipeline via the outlet 3-1 of the wastewater storage tank.

[0067] In this embodiment, the wastewater negative pressure mechanism can be a vacuum pump 7. For example... Figure 8 As shown, during normal cleaning operations, when the air pump 7 is working, it draws air from the sludge storage tank 3, creating a negative pressure inside. This causes the one-way valve 3-3 to open, allowing the cleaning fluid accumulated in the sludge collection tank 6 to enter the sludge storage tank 3 through the suction port 6-3, the sludge storage tank inlet 3-2, and the one-way valve 3-3. When the air pump 7 is not working, the one-way valve 3-3 closes to prevent the cleaning fluid in the sludge storage tank 3 from flowing back into the collection tank 6 through the one-way valve 3-3.

[0068] As more and more cleaning wastewater enters the wastewater storage tank 3, the liquid level gradually rises. When the liquid level reaches level 3-5, the wastewater in the tank divides it into two closed chambers, with the left chamber forming a relative vacuum under negative pressure. Level 3-5 is tangent to the lowest point of the arc-shaped structure in the wastewater storage tank 3. The vacuum pump 7 continues to operate, and the cleaning wastewater enters the wastewater storage tank 3 through the suction port 6-3, the wastewater storage tank inlet 3-2, and the one-way valve 3-3. Due to atmospheric pressure, the liquid level in the left chamber (where the wastewater storage tank outlet 3-1 is located) continues to rise until it is full. The liquid level in the right chamber (where the wastewater storage tank inlet 3-2 is located) does not rise with the left chamber, thus preventing the cleaning wastewater from flowing back into the collection tank 6 when the one-way valve 3-3 closes.

[0069] In a further preferred embodiment, the waste tank 3 is equipped with a full-level detection component 3-4. The full-level detection component 3-4 is positioned at the highest point of the waste tank 3 when the window cleaning robot is in normal cleaning operation. When the level of cleaning fluid stored in the waste tank 3 exceeds a preset value, the window cleaning robot issues an alarm, prompting the user to empty the waste fluid from the waste tank 3 promptly. For example, the window cleaning robot can be placed on a base station, and the waste fluid in the waste tank 3 can be emptied through the base station. If the waste fluid in the waste tank 3 is not emptied in time, it is sprayed onto the roller 4 through the waste tank outlet 3-1, the air pump 7, and the overflow nozzle 1-4 on the liquid supply assembly, preventing the waste fluid from overflowing into the window cleaning robot body and causing damage.

[0070] The working process of the window cleaning robot provided in this application embodiment is as follows:

[0071] Add an appropriate amount of clean water to the storage tank 2. For example, the window cleaning robot can be placed on the base station, and clean water can be added to the storage tank through the base station. When the window cleaning robot is in normal cleaning operation, the roller 4 is in a vertical position, and the window cleaning robot moves horizontally. By rolling the roller, the dirt on the cleaning surface is left on the roller, thereby completing the cleaning work of the cleaning surface.

[0072] The inlet of water pump 8 is connected to the second outlet 2-1 of storage tank 2 via a pipeline. One end of a flexible hose is connected to the outlet of water pump 8, and a tee is connected to the other end of the hose. One or more tee connections are used to connect the outlet of water pump 8 to inlets 1-1, 1-3, 1-5, and 1-6 respectively. When water pump 8 is started, clean water is pumped from storage tank 2 to the inlets using the pumping force provided by water pump 8. Taking the water path containing inlet 1-5 as an example, inlet 1-5 is located at the highest point of its water path. Under the action of gravity and pumping pressure, clean water flows from inlet 1-5 into the water path and flows downwards. The water path containing inlet 1-5 is divided into three branch water paths, each with a first outlet at its lowest point, namely 151, 152, and 153. Each branch water path has the same volume, ensuring that the output of each first outlet is the same. The liquid supply pipeline and its branch pipelines can form multiple water channels for conveying cleaning liquid. Each water channel includes one or more first liquid outlets. The first liquid outlets of each water channel are evenly spaced in the extension direction of the roller 4, so that clean water can be evenly sprayed on the roller 4, thereby improving the cleaning effect.

[0073] Clean water is sprayed onto the roller 4, mixing with the dirt left on the roller 4 to form wastewater. The scraper 5 is inserted into the bristles of the roller 4 to form an interference fit. When the roller 4 rotates, the scraper 5 can scrape the wastewater off the roller 4. The scraper 5 is provided with a serrated segmented guide groove 5-1, which guides the wastewater scraped off the roller 4 into the collection tank 6 through the guide groove 5-1.

[0074] The sludge collection tank 6, located at the lower end of the roller 4, is used to collect wastewater scraped off the roller 4 by the scraper blades 5. The bottom of the sludge collection tank 6 has an inclined plane 6-1, at the lowest point of which a sludge suction port 6-3 is opened. The wastewater scraped off the roller 4 by the scraper blades 5 flows downwards due to gravity. Since the sludge collection tank 6 is located at the lowest end of the cleaning assembly, all wastewater eventually flows into the sludge collection tank 6. The bottom of the sludge collection tank has an inclined plane 6-1; the wastewater entering the sludge collection tank 6 flows along the inclined plane 6-1 due to gravity, eventually converging at the lowest point 6-2 of the sludge collection tank 6. A sludge suction port 6-3 is opened at the lowest point 6-2 of the sludge collection tank 6 so that the wastewater can be transferred from the sludge collection tank 6 to the sludge storage tank 3 through the sludge suction port 6-3, preventing excessive wastewater from accumulating in the sludge collection tank 6 and causing leakage and secondary pollution.

[0075] When the air pump 7 is started, it draws air out of the sludge storage tank 3, creating a negative pressure inside the tank. This causes the one-way valve 3-3 to open, allowing the wastewater accumulated in the sludge collection tank 6 to enter the sludge storage tank 3 through the suction port 6-3, the sludge storage tank inlet 3-2, and the one-way valve 3-3. When the air pump 7 is not working, the one-way valve 3-3 closes to prevent wastewater in the sludge storage tank from flowing back into the sludge collection tank 6 through the one-way valve 3-3.

[0076] As more and more sewage enters the sewage storage tank 3, the sewage level gradually rises. When the sewage level in the sewage storage tank 3 reaches a horizontal position tangent to the lowest point of the arc-shaped structure in the sewage storage tank 3, the sewage in the sewage storage tank 3 divides the sewage storage tank 3 into two closed cavities. The vacuum pump 7 continues to work, and sewage enters the sewage storage tank 3 through the suction port 6-3, the sewage storage tank inlet 3-2, and the one-way valve 3-3. Due to atmospheric pressure, the sewage level in the cavity where the sewage storage tank outlet 3-1 is located will continue to rise until it fills the cavity where the sewage storage tank outlet 3-1 is located. However, the sewage level in the cavity where the sewage storage tank inlet 3-2 is located will not continue to rise, thus preventing sewage from flowing back into the collection tank 6 from the one-way valve 3-3 the moment it closes.

[0077] After cleaning, the window cleaning robot can be placed on the base station to clean the sewage in the sewage storage tank 3.

[0078] The above describes the working process of the window cleaning robot during normal cleaning operations.

[0079] The window cleaning robot can also operate along the edge. In this mode, the robot can rotate 360 ​​degrees on a plane parallel to the working surface, and the roller 4 of the robot is not necessarily vertical. When the window cleaning robot is operating along the edge, the air pump 7 and water pump 8 are not working, and the one-way valve 3-3 in the sludge storage tank 3 is closed to prevent sewage from flowing back into the sludge collection tank 6 and causing secondary pollution.

[0080] The storage tank 2 is also equipped with a low-level detection component 2-2 to prevent the water level in the storage tank 2 from becoming too low. When the water level in the storage tank falls below a preset value, the window cleaning robot issues an alarm, prompting the user to add water to the storage tank 2. For example, the window cleaning robot can be placed on a base station, and water can be added to the storage tank 2 via the base station.

[0081] The storage tank 2 is also equipped with a high-level detection component to prevent the water level in the storage tank from becoming too high, causing water to overflow from the overflow port 2-3. When the water level in the storage tank exceeds the preset value, the window cleaning robot will issue an alarm warning, prompting the user that the water level in storage tank 2 is higher than the preset value and prompting the user to stop adding water.

[0082] If the amount of water in the storage tank 2 increases further, when the water in the storage tank 2 overflows, it can flow out through the overflow port 2-3 and the overflow nozzle 1-2 through the pipeline, preventing the water in the storage tank 2 from entering the interior of the window cleaning robot body when it overflows, thus preventing damage to the machine body.

[0083] The wastewater storage tank 3 is also equipped with a full-level detection component 3-4. When the level of wastewater stored in the wastewater storage tank 3 exceeds a preset value, the window cleaning robot issues an alarm, reminding the user that the wastewater level in the tank 3 is higher than the preset value and prompting the user to empty the wastewater from the tank 3 in a timely manner. For example, the window cleaning robot can be placed on a base station, and the wastewater in the tank 3 can be emptied through the base station.

[0084] If the sewage in the sewage tank 3 is not cleaned in time and the amount increases further, when the sewage in the sewage tank 3 overflows, the sewage will be sprayed onto the roller 4 through the sewage tank outlet 3-1, the air pump 7 and the overflow nozzle 1-4 set on the liquid supply component, to prevent the sewage in the sewage tank 3 from entering the interior of the window cleaning robot body when it overflows, which would cause damage to the machine body.

[0085] This application also provides a liquid supply assembly for a window cleaning robot. The liquid supply assembly is arranged along the extension direction of the roller of the cleaning assembly and includes at least one liquid supply line, which includes an inlet and a first outlet. The inlet is located at the higher end of the liquid supply line when the roller is in a vertically extending position. Cleaning fluid can enter the liquid supply line through the inlet and be sprayed onto the roller through the first outlet.

[0086] This application also provides a sludge collection tank for a window cleaning robot, which is located at the lower end of the cleaning assembly during normal cleaning operations. The bottom of the sludge collection tank has a sloping plane, and a sludge extraction port is formed at the lowest point of the plane. The sludge collection tank is used to collect cleaning waste liquid flowing out after passing through the roller.

[0087] This application also provides a waste collection tank for a window cleaning robot. The waste collection tank has an arc-shaped structure. During normal cleaning operation, the inlet and outlet of the waste collection tank are located on opposite sides of the arc-shaped structure, with the inlet lower than the outlet. The waste collection tank stores cleaning waste that flows through the roller.

[0088] This application also provides a scraping assembly for a window cleaning robot, wherein a scraper blade in the scraping assembly is inserted into the bristles of a roller to form an interference fit. When the roller rotates, the scraper blade can scrape the cleaning liquid off the roller. The scraper blade is provided with segmented guide grooves to guide the cleaning liquid scraped off the roller into a collection tank.

[0089] The technical solutions provided in the embodiments of this application will be described in conjunction with specific application scenarios.

[0090] Application scenarios

[0091] The window cleaning robot includes an adsorption component, a cleaning component, a liquid storage tank, a sludge storage tank, a cleaning liquid pumping mechanism, a sludge pumping mechanism, and a sludge collection tank. The cleaning component includes a roller, a liquid supply component, and a scraper. The window cleaning robot can be used to clean smooth surfaces perpendicular to the ground, such as windows, tiled walls, mirrors, and shower glass. The adsorption component is used to adhere the window cleaning robot to the surface being cleaned, preventing it from falling off. An appropriate amount of cleaning liquid is added to the liquid storage tank 2. When the window cleaning robot is in operation, the roller 4 is in a vertical position, and the robot moves horizontally. The rolling of the roller 4 leaves dirt on the working surface. The cleaning liquid is sprayed onto the roller 4 through the supply line, participating in the cleaning operation while the roller 4 cleans the surface, and ultimately mixing with the dirt left on the roller 4 to form sludge. The sludge collection tank 6 collects the sludge, and the sludge pumping mechanism 7 draws the sludge from the collection tank 6 into the sludge storage tank 3. After cleaning, the window cleaning robot can be placed on the base station to clean the sewage in the sewage storage tank 3.

[0092] Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of this application. Therefore, the scope of protection of this application should be determined by the scope defined in the claims of this application.

Claims

1. A window cleaning robot, characterized by, It includes an adsorption component and a cleaning component arranged adjacent to each other, wherein the adsorption component is used to adsorb the window cleaning robot onto the surface to be cleaned; The cleaning assembly includes a roller, a liquid supply assembly, and a scraping assembly. The scraping assembly is used to scrape the cleaning liquid off the roller. The scraping assembly is located between the adsorption assembly and the roller. The liquid supply assembly is located on the side of the roller away from the cleaning surface. When the window cleaning robot is in the process of normal cleaning operation, the roller is in a vertically extended position.

2. The window-cleaning robot according to claim 1, characterized in that The liquid supply assembly is arranged along the extension direction of the roller and includes at least one liquid supply line. The liquid supply line includes an inlet and a first outlet. The inlet is positioned higher than the first outlet. The flow path of the cleaning liquid passes through the inlet and is sprayed onto the roller through the first outlet.

3. The window-cleaning robot according to claim 2, characterized in that The liquid supply pipeline includes multiple branch pipelines; each branch pipeline is provided with at least one first liquid outlet, and the multiple first liquid outlets are arranged at intervals along the extension direction of the roller; each branch pipeline has the same volume.

4. The window-cleaning robot according to claim 2, characterized in that The liquid supply pipeline includes multiple liquid inlets and multiple sets of branch pipelines, each liquid inlet corresponding to a set of branch pipelines, and each set of branch pipelines having multiple first liquid outlets.

5. The window-cleaning robot according to claim 4, characterized in that Each group of branch pipes has two first liquid outlets, located at the ends of the two branch pipes of that group of branch pipes respectively.

6. The window-cleaning robot according to claim 4, characterized in that Each branch pipe has three first liquid outlets, which are arranged at intervals along the extension direction of the roller. The first liquid outlet at the highest point is located at the end of the middle branch pipe of the branch pipe group, and the other two first liquid outlets are located at the ends of the branch pipes on both sides of the middle branch pipe.

7. The window cleaning robot according to claim 1, characterized in that, Also includes: The system includes a liquid storage tank and a sludge storage tank. The liquid storage tank stores the cleaning fluid supplied to the liquid supply line; the sludge storage tank stores the cleaning sludge that flows through the roller. When the window cleaning robot is in normal cleaning operation, the liquid storage tank is located on the upper side of the adsorption component, the dirt storage tank is located on the lower side of the adsorption component, and the roller is located on the same side of the liquid storage tank and the dirt storage tank.

8. The window cleaning robot according to claim 7, characterized in that, Also includes: Cleaning fluid pumping mechanism; A second outlet is provided at the lowest position of the liquid storage tank when the window cleaning robot is in normal cleaning operation; the inlet of the cleaning liquid pumping mechanism is connected to the second outlet through a pipeline, and the outlet of the cleaning liquid pumping mechanism is connected to the inlet of the liquid supply pipeline through a pipeline. The pumping force provided by the cleaning fluid pumping mechanism can pump the cleaning fluid in the storage tank to the inlet as needed, and then spray it out to the roller through the first outlet.

9. The window-cleaning robot according to claim 7, characterized in that It also includes a sludge collection tank; the sludge collection tank is used to collect the cleaning liquid that flows out after passing through the roller; when the window cleaning robot is in the normal cleaning operation process, the sludge collection tank is located at the lower end of the cleaning component; the bottom of the sludge collection tank has an inclined plane, and a sludge extraction port is opened at the lowest point of the plane.

10. The window-cleaning robot according to claim 9, characterized in that The negative pressure mechanism of the dirty liquid is connected to the outlet of the storage tank through a pipeline, and the outlet of the negative pressure mechanism of the dirty liquid is connected to the overflow nozzle provided on the liquid supply assembly through a pipeline. When the clean dirty liquid in the storage tank overflows, the clean dirty liquid can be guided from the overflow nozzle through the pipeline and the outlet of the storage tank.

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