Window cleaning robot

Abstract

The utility model relates to a window cleaning robot, include: machine body is configured as can move along the walking direction to make the liquid on the surface to be cleaned of squeegee part scraping off, water spraying system, including at least one nozzle assembly, nozzle assembly sets up on the machine body, is configured as can inject liquid to the front of squeegee part, sewage collection system, is configured as can collect the liquid of squeegee part scraping off, the window cleaning robot of the utility model integrates water spraying system, squeegee system and sewage collection system, forms the continuous, collaborative work procedure of " wet - remove - recycle", has realized the complete automation operation of smooth surface cleaning process to glass, has reduced the demand of manual intervention significantly, has simplified the user operation, makes the cleaning process more convenient and efficient.

Description

Technical Field

[0001] This utility model relates to the field of window cleaning robots, and in particular to a window cleaning robot. Background Technology

[0002] When cleaning windows, the traditional manual window cleaning method requires users to first spray cleaning liquid onto the glass surface, and then repeatedly scrape with a squeegee or cloth to remove the dirty water. This operation is not only labor-intensive and inefficient, but also poses safety hazards. Especially for large, continuous glass surfaces, it is difficult to guarantee the continuity and cleanliness of manual cleaning.

[0003] To address these issues, existing technologies have proposed a window cleaning robot that is fixed to the glass surface using a negative pressure adsorption mechanism and wipes the glass with a rotating cloth or mop located at its bottom. However, during repeated wiping, this type of robot quickly absorbs dirt. When the cloth becomes saturated and wiping continues, the already absorbed dirt is re-applied to the glass surface, causing secondary pollution and resulting in a poor user experience. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a window cleaning robot, which aims to solve at least one of the problems of the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a window cleaning robot, comprising:

[0007] The main body of the machine is configured to adhere to the surface to be cleaned and move along the surface to be cleaned.

[0008] A wiping system includes at least one wiping section disposed in front of the machine body in the direction of travel, the machine body being configured to move in the direction of travel so that the wiping section removes liquid from the surface to be cleaned;

[0009] A water spray system includes at least one nozzle assembly disposed on the machine body and configured to spray liquid toward the front of the wiper section;

[0010] A wastewater collection system is configured to collect the liquid scraped off by the scraper.

[0011] In the above technical solution, the sewage collection system includes:

[0012] The wastewater tank is located in the middle area along the travel direction of the machine body;

[0013] A wastewater channel is provided on the machine body, and the wastewater channel connects the scraper and the wastewater tank;

[0014] The pumping device has an air inlet duct connected to the sewage tank and is configured to draw negative pressure into the sewage tank to drive sewage from the scraper section into the sewage tank through the sewage channel.

[0015] In any of the above technical solutions, the machine body includes:

[0016] Two opposing and spaced-apart walking modules are used to drive the machine body to move along the surface to be cleaned, and the sewage tank is detachably mounted on the mounting shell of one of the walking modules.

[0017] In any of the above technical solutions, the sewage tank is located at the top of the mounting shell.

[0018] In any of the above technical solutions, the sewage channel and the pumping device are located between the two walking modules. The sewage tank has multiple interfaces on its side wall facing the other walking module, one of which is connected to the sewage channel and the other is connected to the air inlet.

[0019] In any of the above technical solutions, the wiping system has two wiping parts, one of which is located at the front of the machine body in the direction of travel, and the other is located at the rear of the machine body in the direction of travel.

[0020] The sewage collection system includes two sewage channels. One end of each sewage channel corresponds to and is connected to the interface, and the other end corresponds to and extends toward the corresponding scraper and is connected to it.

[0021] The air inlet is located between the two sewage channels. The air inlet and the two sewage channels are respectively constructed as a bent structure that transitions from high to low. The three together define the accommodating space. The walking drive component of the walking module is located within the accommodating space.

[0022] In any of the above technical solutions, the water spray system further includes:

[0023] A clean water tank is connected to the nozzle assembly to supply water to the nozzle assembly. The clean water tank is disposed within the machine body, and the clean water tank and the wastewater tank are spaced apart on the machine body in a direction perpendicular to the walking direction.

[0024] In any of the above technical solutions, a water inlet is provided on the top wall of the machine body, and the clean water tank is connected to the water inlet.

[0025] In any of the above technical solutions, the machine body has an open receiving groove on the side wall facing the wiping part. The wiping part is rotatably connected to the machine body and has a retracted position in the receiving groove and an extended position extending out of the receiving groove. When the wiping part is in the extended position, the wiping part can abut against the surface to be cleaned.

[0026] In any of the above technical solutions, the nozzle assembly is disposed on the side wall of the machine body facing the wiper section and located above the receiving groove.

[0027] In any of the above technical solutions, a wiping cloth is further included, which is disposed at the bottom of the machine body, and the squeegee is located on the outer periphery of the wiping cloth.

[0028] This utility model of a window cleaning robot integrates a water spraying system, a squeegee system, and a wastewater collection system, achieving fully automated operation of the cleaning process for smooth surfaces such as glass. Specifically, the water spraying system promptly wets the stained areas on the surface to be cleaned, softening and soaking the dust and stains. The squeegee effectively removes the wetted stains and wastewater from the surface. Simultaneously, the wastewater collection system works with the squeegee to collect and recycle the wastewater generated during cleaning, preventing wastewater residue or dripping onto the cleaned surface. This forms a continuous, collaborative workflow of "wetting-cleaning-recycling," significantly reducing the need for manual intervention, simplifying user operation, and making the cleaning process more convenient and efficient. Furthermore, by promptly removing the scraped wastewater, the possibility of splashing, dripping, or secondary contamination of the cleaned area due to gravity or robot movement is effectively reduced, helping to maintain a cleaner cleaning effect and improving the overall performance of the cleaning operation. The integrated design of the entire system on the robot body also makes the robot structure more compact, its functions more complete, and reflects a high degree of automation. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of a window cleaning robot according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the front view structure of a window cleaning robot according to an embodiment of the present invention;

[0031] Figure 3 This is a side view of the window cleaning robot according to an embodiment of the present invention.

[0032] Figure 4 This is a top view of a window cleaning robot according to an embodiment of the present invention.

[0033] Figure 5 This is a bottom view structural diagram of a window cleaning robot according to an embodiment of the present invention;

[0034] Figure 6 This is an exploded structural diagram of a window cleaning robot according to an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the window cleaning robot in a usage state according to an embodiment of the present invention;

[0036] Figure 8 This is a three-dimensional structural diagram of the wiper unit according to an embodiment of the present invention;

[0037] Figure 9 This is a three-dimensional structural diagram of a sewage tank according to an embodiment of the present invention.

[0038] The correspondence between the reference numerals and the component names is as follows:

[0039] 10. Window cleaning robot; 100. Main body; 110. Housing; 120. Adsorption system; 130. Walking module; 131. Mounting shell; 132. Walking drive component; 140. Water inlet; 150. Receiving tank; 200. Squeegee system; 210. Squeegee head; 211. Mounting carrier; 212. Squeegee strip; 213. Convex and concave structure; 300. Water spraying system; 310. Nozzle assembly; 320. Clean water tank; 400. Sewage collection system; 410. Sewage tank; 411. Interface; 420. Sewage channel; 430. Liquid extraction device; 431. Air inlet; 500. Cleaning cloth. Detailed Implementation

[0040] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0041] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0042] The following is a reference to the appendix. Figure 1 To be continued Figure 9 This invention describes a window cleaning robot 10 according to some embodiments of the present invention.

[0043] like Figure 1 and Figure 6 As shown, an embodiment of the present invention proposes a window cleaning robot 10, including a robot body 100, a wiping system 200, a water spraying system 300, and a sewage collection system 400.

[0044] The main body 100 can adhere to the surface to be cleaned (such as windows, walls, etc.) and move along the surface. More specifically, as... Figure 5 As shown, the robot body 100 includes a housing 110, an adsorption system 120, and a walking module 130. The adsorption system 120 is located inside the housing 110 and can employ any adsorption method, such as negative pressure adsorption, magnetic adsorption, or adhesive adsorption, as long as the robot body 100 is adsorbed onto a vertical or inclined surface to be cleaned. The walking module 130 is located at the bottom of the housing 110 and can employ any walking method, such as tracks or wheels. Driven by the corresponding walking drive component 132, it enables the robot to walk or turn along the surface to be cleaned.

[0045] The wiping system 200 includes at least one wiping section 210, which is located in front of the machine body 100 in the direction of travel. The machine body 100 is configured to move in the direction of travel so that the wiping section 210 can wipe away liquid from the surface to be cleaned.

[0046] like Figure 6 and Figure 7 As shown, the window cleaning robot 10 includes at least one wiping section 210, which is located in front of the robot body 100 in the direction of travel. The robot body 100 is configured to move in the direction of travel so that the wiping section 210 can scrape off liquid from the surface to be cleaned.

[0047] Understandably, the main body 100 has six positions: front, rear, left, right, up, and down. The lower position of the main body 100 faces the surface to be cleaned. In some specific embodiments, the window cleaning robot 10 includes two squeegee sections 210, distributed on adjacent sides of the main body 100. For example, one squeegee section 210 is positioned in front (or rear) of the main body 100, and the other is positioned on the left (or right) side. In other specific embodiments, the two squeegee sections 210 are distributed on opposite sides of the main body 100. For example, one squeegee section 210 is positioned in front of the main body 100, and the other is positioned in front of the main body 100. Of course, the window cleaning robot 10 can also be designed to include three or four squeegee sections 210.

[0048] The water spray system 300 includes at least one nozzle assembly 310 disposed on the machine body 100 and configured to spray liquid toward the front of the wiper section 210. The wastewater collection system 400 is configured to collect the liquid wiped away by the wiper section 210.

[0049] This utility model's window cleaning robot 10 integrates a water spraying system 300, a squeegee system 200, and a wastewater collection system 400, achieving fully automated operation of the cleaning process for smooth surfaces such as glass. Specifically, the water spraying system 300 can promptly wet the stained areas on the surface to be cleaned, softening and soaking the dust and stains. Its squeegee 210 then effectively scrapes away the wetted stains and wastewater from the surface. Simultaneously, the wastewater collection system 400 works in conjunction with the squeegee 210 to collect and recycle the wastewater generated during scraping, preventing wastewater residue or dripping onto the cleaned surface. This forms a continuous, collaborative workflow of "wetting-cleaning-recycling," significantly reducing the need for manual intervention, simplifying user operation, and making the cleaning process more convenient and efficient. Furthermore, by promptly removing the scraped wastewater, the possibility of wastewater splashing, dripping, or secondary contamination of the cleaned area due to gravity or robot movement is effectively reduced, helping to maintain a cleaner cleaning effect and improving the overall performance of the cleaning operation. The integrated design of the entire system on the robot body 100 makes the robot structure more compact, the functions more complete, and reflects a high degree of automation.

[0050] The structure of the wiper unit 210 is detailed as follows: Figure 8 As shown, the wiping unit 210 includes a mounting carrier 211 and a wiping strip 212. The mounting carrier 211 is movably connected to the main body 100, and the wiping strip 212 is disposed on the mounting carrier 211. The wiping strip 212 is made of soft rubber, such as silicone or rubber. The soft rubber has a certain elastic deformation ability, which can better resist the surface to be cleaned and can wipe away liquids (water, cleaning fluid, stains, etc.) on the surface to be cleaned, leaving less watermarks and stains, and achieving a better cleaning effect. The wiper blade 212 has an abutting end facing the surface to be cleaned and a connecting end opposite to the abutting end. The mounting carrier 211 is connected to the connecting end to provide support for the wiper blade 212, preventing the wiper blade 212 from deforming under force during machine movement and affecting the wiping effect. The abutting end extends out of the mounting carrier 211. Thus, when the first drive system drives the corresponding wiper part 210 to abut against the surface to be cleaned, there is a gap between the mounting carrier 211 and the surface to be cleaned. This avoids the mounting carrier 211 from creating resistance to the robot's movement and also avoids the mounting carrier 211 from scratching or contaminating the surface to be cleaned and generating noise.

[0051] Furthermore, the wiper unit 210 also includes a convex-concave structure 213 disposed on the mounting carrier 211. The convex-concave structure 213 is located in front of the wiper strip 212 and has a gap between it and the wiper strip 212. For example, the end of the convex-concave structure 213 facing the surface to be cleaned is wavy, serrated, or has an array of protrusions. In this way, when the wiper unit 210 abuts against the surface to be cleaned, a part of the protrusions in the convex-concave structure 213 can abut against the surface to be cleaned, and a part of the concave structure has a gap between it and the surface to be cleaned. Thus, during the robot's movement, combined with the effect of gravity, the liquid can be separated into multiple streams by the protrusions in the convex-concave structure 213 and then pass through the concave part of the convex-concave structure 213 and the wiper strip 212 structure, realizing the sorting and dispersion of the cleaning liquid by the convex-concave structure. This allows the liquid to be more evenly distributed in the area corresponding to the wiper strip 212, avoiding uneven spraying of cleaning liquid and the situation where cleaning liquid accumulates on the surface to be cleaned, further improving the cleaning effect of the wiper strip 212.

[0052] In some embodiments, the wastewater collection system 400 includes a wastewater tank 410, a wastewater channel 420, and a pumping device 430. The wastewater tank 410 is located in the central region of the machine body 100 in the direction of travel. The wastewater channel 420 is located on the machine body 100 and connects the scraper 210 and the wastewater tank 410. The pumping device 430 has an air inlet 431 connected to the wastewater tank 410 and is configured to draw negative pressure into the wastewater tank 410 to drive wastewater from the scraper 210 through the wastewater channel 420 into the wastewater tank 410.

[0053] By integrating the wastewater tank 410 into the body 100 and placing it in the central area of ​​its movement direction, the wastewater can be collected and stored instantly, effectively preventing dripping and secondary pollution during the cleaning process. Placing the wastewater tank 410 in the central area helps balance the weight distribution of the body 100. Especially when the liquid level in the wastewater tank 410 changes or the robot performs turning or acceleration movements, it reduces the additional torque caused by the shift in the center of gravity, thereby improving the overall stability and anti-tipping ability of the robot when adsorbing and moving on vertical or inclined glass surfaces, and reducing the risk of accidental detachment. Simultaneously, the coordinated operation of the wastewater tank 410, wastewater channel 420, and suction device 430 through the air inlet duct 431 to create negative pressure in the wastewater tank 410 ensures smooth, efficient transport and reliable storage of wastewater from the scraper 210 to the wastewater tank 410, further improving the continuity and effectiveness of the cleaning operation.

[0054] Based on any of the above embodiments, the machine body 100 includes two opposing and spaced-apart walking modules 130 for driving the machine body 100 to move along the surface to be cleaned, and the sewage tank 410 is detachably mounted on the mounting shell 131 of one of the walking modules 130.

[0055] By detachably mounting the sewage tank 410 onto the mounting shell 131 of one of the walking modules 130, the sewage collection unit and the walking drive unit are integrated. The mounting shell 131 of the walking module 130, as the base structure supporting the walking drive component 132, typically possesses good structural strength and rigidity. Using it to support the sewage tank 410 helps provide a stable and reliable support platform, reducing the risk of structural deformation due to the sewage tank 410's own weight or liquid load, thereby improving the stability of the sewage tank 410 installation. It also optimizes the spatial layout, making the main body 100 structure more compact. Furthermore, the detachable connection method provides operational convenience for users to clean, maintain, or replace the sewage tank 410.

[0056] Furthermore, the wastewater tank 410 is located at the top of the mounting shell 131. This effectively utilizes the underutilized space at the top of the walking module 130 for wastewater storage, achieving a high-level layout design. Without significantly increasing the overall profile of the main body 100, it provides a reasonable location for the wastewater tank 410, helping to optimize the space utilization of the main body 100 and maintain the compactness of the structure. At the same time, the top of the mounting shell 131 typically has a good load-bearing foundation and a relatively stable mounting surface, which helps to ensure the stable and reliable installation of the wastewater tank 410.

[0057] Based on any of the above embodiments, such as Figure 9 As shown, the sewage channel 420 and the pumping device 430 are both located between the two walking modules 130. The sewage tank 410 has multiple interfaces 411 on its side wall facing the other walking module 130. One interface 411 is connected to the sewage channel 420, and the other is connected to the air inlet duct 431.

[0058] By centrally arranging the sewage channel 420 and the pumping device 430 between two relatively spaced walking modules 130, the idle space between the walking modules 130 is effectively utilized, significantly optimizing the compactness of the spatial layout and helping to achieve the miniaturization and lightweight design of the robot. Interfaces 411 are centrally arranged on the side wall of the sewage tank 410 facing the other walking module 130, which are connected to the sewage channel 420 and the air inlet duct 431 respectively, further shortening the pipeline connection path, simplifying the structural layout, and making the pipeline route clearer and more reasonable.

[0059] Based on any of the above embodiments, the wiping system 200 has two wiping sections 210, one of which is located in front of the main body 100 in the direction of travel, and the other is located in the rear of the main body 100 in the direction of travel.

[0060] The sewage collection system 400 includes two sewage channels 420. One end of each sewage channel 420 corresponds to and is connected to the interface 411, and the other end corresponds to and extends toward the corresponding scraper 210 and is connected to it.

[0061] The air intake duct 431 is located between the two sewage channels 420. The air intake duct 431 and the two sewage channels are respectively constructed as a bending structure that transitions from high to low. The three together define the accommodation space. The walking drive component 132 of the walking module 130 is located within the accommodation space.

[0062] By constructing the air inlet duct 431 and the two sewage channels 420 together as a bent structure that transitions from high to low, the three are arranged in a compact space. This effectively utilizes the longitudinal height difference inside the main body 100 to guide the sewage. At the same time, the bent contours of the three work together to define the accommodating space, allowing the walking drive component 132 to be integrated into this accommodating space. This avoids additional occupation of the transverse layout space of the main body 100 and significantly improves the integration of the internal structure. The corresponding connection design between the two sewage channels 420 and the two scraper sections 210, combined with the negative pressure suction of the centrally located air inlet duct 431, can simultaneously process the sewage generated by the front and rear scraper sections 210 when the robot moves in both directions, ensuring the independence and stability of the sewage recovery path under different travel directions.

[0063] Based on any of the above embodiments, the water spraying system 300 includes a clean water tank 320, which is connected to the nozzle assembly 310 to supply water to the nozzle assembly 310. The clean water tank 320 is disposed inside the machine body 100, and the clean water tank 320 and the wastewater tank 410 are spaced apart on the machine body 100 in a direction perpendicular to the walking direction.

[0064] Water is supplied directly to the nozzle assembly 310 through the built-in clean water tank 320, avoiding the spatial restrictions on the robot's freedom of movement caused by external water supply lines. This allows the robot to have full mobility when walking on the surface to be cleaned. The structural arrangement of the clean water tank 320 and the wastewater tank 410 at intervals helps to maintain the lateral gravity balance of the robot body 100 during the cleaning operation, reduces the local center of gravity shift caused by the concentrated configuration of liquid storage containers, and improves the stability of the robot during movement.

[0065] Based on any of the above embodiments, such as Figure 4 As shown, a water inlet 140 is provided on the top wall of the machine body 100, and the clean water tank 320 is connected to the water inlet 140. The water inlet 140 on the top wall makes it convenient for users to add cleaning fluid from the direction of gravity, simplifying the operation process, while avoiding the risk of sealing failure that may occur with side openings. The direct connection design between the water inlet 140 and the clean water tank 320 shortens the liquid injection path, reduces the maintenance burden, and maintains the structural integrity of the whole machine.

[0066] Based on any of the above embodiments, such as Figure 2 and Figure 7 As shown, the main body 100 is provided with a receiving groove 150. The wiping part 210 is rotatably connected to the main body 100 and has a retracted position in the receiving groove 150 and an extended position extending out of the receiving groove 150. When the wiping part 210 is in the extended position, the wiping part 210 can abut against the surface to be cleaned.

[0067] The receiving groove 150 provides storage space for the wiper 210. When not in use, the wiper 210 can rotate and retract into the groove, effectively reducing the overall size of the machine and facilitating storage and movement in narrow spaces. The telescopic design of the rotating connection allows the wiper 210 to fit tightly against the surface to be cleaned when extended, and avoids interference or collision with external objects when retracted. The open structure of the receiving groove 150 provides physical clearance for the rotation of the wiper 210.

[0068] Furthermore, the wiper system 200 has two wiper units 210, one of which is located in front of the main body 100 in the direction of travel, and the other is located in the rear of the main body 100 in the direction of travel. The wiper system 200 also includes a wiper drive device, which is connected to the two wiper units 210 and can drive the wiper units 210 to move to the retracted position or the extended position respectively.

[0069] When the robot body 100 moves towards the location of one of the wiping sections 210, the wiping drive device drives the wiping section 210 in that direction to abut against the surface to be cleaned to perform a wiping operation, thus removing the liquid in the path and achieving cleaning. At the same time, the wiping drive device synchronously controls the wiping section 210 in the non-moving direction to move away from the surface to be cleaned, so that there is a gap between the non-working wiping section 210 and the surface to be cleaned. This completely eliminates the friction between the non-working wiping section 210 and the surface to be cleaned, avoiding the non-working wiping section 210 from generating additional resistance to the robot's movement and interfering with the robot's adsorption stability and path accuracy. In particular, it is beneficial for the robot to maintain stable movement on vertical or inclined surfaces. Secondly, the non-working wiping section 210 will not come into contact with the cleaned area, fundamentally preventing the wiping section 210 from causing secondary pollution to the cleaned area, providing a better cleaning effect for the window cleaning robot 10. At the same time, the non-working wiping section 210 will not generate vibration or noise due to friction, improving the user experience of the product.

[0070] Based on any of the above embodiments, such as Figure 3 As shown, the nozzle assembly 310 is disposed on the side wall of the main body 100 facing the wiper section 210 and located above the receiving groove 150.

[0071] The nozzle assembly 310 is positioned on the upper side wall of the receiving tank 150, so that the spray direction naturally covers the area to be cleaned by the wiper 210. Gravity assists the liquid to flow to the wiping surface. The high-position arrangement prevents liquid splashing and intrusion into the internal mechanism of the receiving tank 150. At the same time, it provides unobstructed movement space for the wiper 210 to rotate and retract. The three-dimensional spatial design of the nozzle assembly 310 and the wiper 210 achieves precise delivery of cleaning liquid and sequential coordination of wiping action while maintaining the minimum projected area. It ensures the spatial overlap between the spray area and the wiping path. The compact vertical layout avoids adding extra thickness to the main body 100 and enhances the compatibility of liquid transmission efficiency and mechanism protection.

[0072] In any of the above technical solutions, such as Figure 5 As shown, it also includes a wiping cloth 500, which is disposed at the bottom of the main body 100, and a squeegee 210 is located on the outer periphery of the wiping cloth 500. In this way, on the one hand, the liquid residue scraped off by the squeegee 210 can be absorbed and wiped dry by the wiping cloth 500 immediately following behind, reducing water marks on surfaces such as windows and improving cleaning power. On the other hand, placing the squeegee 210 on the outer periphery of the wiping cloth 500 helps to prevent cleaning liquid from seeping into the core area at the bottom of the main body 100, reducing the risk of short circuits and component corrosion caused by moisture erosion. More specifically, in the negative pressure adsorption window cleaning robot 10, the wiping cloth 500 absorbs the moisture at the bottom of the main body 100, preventing moisture from contacting the air intake channel or electronic components of the negative pressure adsorption system 120, maintaining the long-term stability of the adsorption force, which helps to ensure the safety of the negative pressure adsorption system 120 and extend its service life.

[0073] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A window cleaning robot, characterized by, include: The main body of the machine is configured to adhere to the surface to be cleaned and move along the surface to be cleaned. A wiping system includes at least one wiping section disposed in front of the machine body in the direction of travel, the machine body being configured to move in the direction of travel so that the wiping section removes liquid from the surface to be cleaned; A water spray system includes at least one nozzle assembly disposed on the machine body and configured to spray liquid toward the front of the wiper section; A wastewater collection system is configured to collect the liquid scraped off by the scraper.

2. The window-cleaning robot according to claim 1, characterized in that The wastewater collection system includes: The wastewater tank is located in the middle area along the travel direction of the machine body; A wastewater channel is provided on the machine body, and the wastewater channel connects the scraper and the wastewater tank; The pumping device has an air inlet duct connected to the sewage tank and is configured to draw negative pressure into the sewage tank to drive sewage from the scraper section into the sewage tank through the sewage channel.

3. The window-cleaning robot according to claim 2, characterized in that The machine body includes: Two opposing and spaced-apart walking modules are used to drive the machine body to move along the surface to be cleaned, and the sewage tank is detachably mounted on the mounting shell of one of the walking modules.

4. The window cleaning robot according to claim 3, characterized in that, The wastewater tank is located at the top of the mounting housing.

5. The window cleaning robot according to claim 4, characterized in that, The sewage channel and the pumping device are both located between the two walking modules. The sewage tank has multiple interfaces on its side wall facing the other walking module, one of which is connected to the sewage channel and the other is connected to the air inlet.

6. The window cleaning robot according to claim 5, characterized in that, The wiping system has two wiping sections, one of which is located in front of the machine body in the direction of travel, and the other is located behind the machine body in the direction of travel. The sewage collection system includes two sewage channels. One end of each sewage channel corresponds to and is connected to the interface, and the other end corresponds to and extends toward the corresponding scraper and is connected to it. The air inlet is located between the two sewage channels. The air inlet and the two sewage channels are respectively constructed as a bent structure that transitions from high to low. The three together define the accommodating space. The walking drive component of the walking module is located within the accommodating space.

7. The window cleaning robot according to any one of claims 2 to 6, characterized in that, The water spray system also includes: A clean water tank is connected to the nozzle assembly to supply water to the nozzle assembly. The clean water tank is disposed within the machine body, and the clean water tank and the wastewater tank are spaced apart on the machine body in a direction perpendicular to the walking direction.

8. The window cleaning robot according to claim 7, characterized in that, The machine body has a water inlet on its top wall, and the clean water tank is connected to the water inlet.

9. The window cleaning robot according to any one of claims 1 to 6, characterized in that, The machine body has an open receiving groove on the side wall facing the wiping part. The wiping part is rotatably connected to the machine body and has a retracted position in the receiving groove and an extended position extending out of the receiving groove. When the wiping part is in the extended position, the wiping part can abut against the surface to be cleaned.

10. The window cleaning robot according to claim 9, characterized in that, The nozzle assembly is disposed on the side wall of the machine body facing the wiper section and located above the receiving groove.

11. The window cleaning robot according to any one of claims 1 to 6, characterized in that, Also includes: A wiping cloth is provided at the bottom of the machine body, and the squeegee is located on the outer periphery of the wiping cloth.

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