A pool cleaning apparatus and method of edge cleaning

Abstract

The application relates to the technical field of pool cleaning, in particular to a pool cleaning device and a side cleaning method, which aims to solve the problem that the main dirt suction port of an existing pool cleaning robot cannot be extended to the outside of the device due to the layout of the walking mechanism, and the dead corner area at the junction of the pool wall and the pool bottom cannot be effectively cleaned. The device comprises a device main body, a garbage basket, a negative pressure assembly, a first dirt inlet and a water outlet, a filter passage is arranged in the device, the garbage basket and the negative pressure assembly are located in the filter passage, at least one second dirt inlet is arranged on the side of the device and is connected with the filter passage, and under the action of the negative pressure assembly, the dirty water body is sucked from the side into the garbage basket for filtration. The application realizes side dirt suction through reuse of the main negative pressure system, does not need additional power, expands the cleaning coverage range and improves the cleaning effect of the dead corner area of the pool.

Description

Technical Field

[0001] This application relates to the technical field of swimming pool cleaning, and more particularly to a swimming pool cleaning device and a method for cleaning the edge of the pool. Background Technology

[0002] Existing pool cleaning robots mainly adopt a bottom-entry design. By setting a main suction port at the bottom of the main body of the device, and working with the bottom cleaning components under the drive of the negative pressure component, the bottom of the pool can be cleaned. However, there are obvious blind spots in the cleaning.

[0003] Because the walking mechanism of pool cleaning robots is usually located on both sides of the main body of the device, the effective suction range of the main suction port is limited to the vertical projection area directly below the main body of the device. Due to the horizontal distance, the main suction port cannot form sufficient suction force, and even light dirt suspended in the water in this area is difficult to be captured by the water flow at the bottom suction port. The interface between the pool wall and the pool bottom is the area in the pool where dirt is most likely to accumulate. Debris such as mud, fallen leaves, and hair have strong solid-liquid interface adhesion here and are not easily carried away by the pool's circulating water flow. Long-term accumulation of dirt not only affects the aesthetics of the pool but also becomes a breeding ground for bacteria and algae, seriously affecting the pool's water quality and safety. Summary of the Invention

[0004] This application provides a swimming pool cleaning device and a method for cleaning along the edge, aiming to solve the problem that existing swimming pool cleaning robots are limited by the suction port and the travel mechanism, making it impossible to effectively clean the dead corner area at the junction of the pool wall and the pool bottom, resulting in incomplete pool cleaning.

[0005] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description or may be learned by practice of this application.

[0006] In some exemplary embodiments of this application, the swimming pool cleaning equipment includes a main body, a trash can, a negative pressure component, and a first inlet and an outlet disposed in the main body. The main body has at least one filtration passage, and the trash can and the negative pressure component are both located in the filtration passage. The negative pressure component is configured to drive the water flow in the filtration passage, so that the water enters from the first inlet, is filtered by the trash can, and is discharged from the outlet. The side of the main body is also provided with at least one second inlet, which is connected to the filtration passage and is configured to generate negative pressure under the operation of the negative pressure component, so as to draw in dirty water from the side and filter it into the trash can.

[0007] This solution achieves side suction by reusing the existing negative pressure system of the equipment, expanding the cleaning coverage without adding core power components. The original negative pressure system only provides power to the bottom inlet. The design connecting the side inlet to the main filtration path allows the same negative pressure source to power both inlets simultaneously, avoiding the increased structural complexity and cost associated with setting up an independent negative pressure system.

[0008] In this type of embodiment, the main body of the device provides an installation reference and protective housing for all internal and external components, ensuring stable operation of each component in the underwater environment. The trash can, as a solid-liquid separation component, traps solid dirt in the water, preventing it from entering the negative pressure assembly and causing blockage or damage. The negative pressure assembly creates a pressure difference within the filtration channel through impeller rotation, providing power for water flow. The first inlet is located at the bottom of the main body, collecting dirt from the area directly below the device, meeting the cleaning needs of a large pool bottom surface. The outlet discharges filtered clean water, maintaining the circulation of water within the pool. The filtration channel regulates the flow path of water within the device, ensuring that all inhaled water must pass through the trash can for filtration. The second inlet is located on the side of the main body, extending to edge areas not covered by the bottom inlet, using the negative pressure within the main filtration channel to create a lateral suction field, collecting dirt from the edge areas.

[0009] In some exemplary embodiments of this application, a detection element is provided on the side of the main body of the pool cleaning equipment. The detection element is used to identify the distance between the main body of the equipment and the boundary of the current cleaning area. The second sewage inlet is configured to be activated when the distance between the main body of the equipment and the boundary of the current cleaning area is less than a preset threshold.

[0010] This solution achieves on-demand activation of the side cleaning function through the linkage control of position detection and the side inlet function, avoiding the impact of the side inlet on the main cleaning process when it is working in non-edge areas. When the equipment is in a large area of ​​the pool bottom, the side inlet remains closed, and the negative pressure is concentrated entirely at the bottom inlet, ensuring sufficient suction for cleaning the pool bottom. When the equipment approaches the edge area, the side inlet automatically opens to supplement the cleaning capacity of the edge area.

[0011] The detection device acquires the relative position information of the equipment and its surrounding environment through non-contact detection, providing a basis for decision-making by the control unit. A preset threshold serves as the trigger condition for the side cleaning function, which can be adjusted according to the structural characteristics of different pools to match the function's activation timing with actual cleaning needs. The conditional activation mechanism of the second waste inlet ensures effective edge cleaning while maintaining the efficiency of regular pool bottom cleaning.

[0012] In some exemplary embodiments of this application, a side cleaning mechanism is also provided on the side of the main body of the pool cleaning equipment, and the side cleaning mechanism and the second sewage inlet are located on the same side of the main body of the equipment.

[0013] This solution improves the cleaning effect of dirt in the edge area by adding an active cleaning mechanism on the same side as the side dirt inlet. The side cleaning mechanism can directly act on the dirt attached to the contact surface, breaking the bonding force between the dirt and the contact surface, so that the dirt that is originally difficult to be absorbed by negative pressure becomes a suspended state that is easy to be sucked in.

[0014] The side-mounted cleaning mechanism and the second inlet are positioned on the same side, ensuring a spatial correspondence between the cleaning and adsorption actions. Dirt pre-treated by the side-mounted cleaning mechanism is immediately collected by the nearby second inlet, reducing the spread of dirt in the water and preventing it from re-settling in other areas.

[0015] In some exemplary embodiments of this application, the side cleaning mechanism of the pool cleaning equipment includes a water spraying mechanism, which is connected to the outlet of the negative pressure component and / or the outside of the trash can via a water supply pipe.

[0016] This solution utilizes the existing water circulation system of the equipment to provide water for the spray mechanism, eliminating the need for a separate water supply system and simplifying the equipment structure. The water used is clean water filtered through a trash can, allowing direct use of the already filtered water within the equipment. This eliminates the need to re-draw unfiltered water from the pool, reducing the amount of water that needs repeated filtration, accelerating the overall water circulation speed, and improving cleaning efficiency. Furthermore, using clean water avoids introducing unfiltered water from the pool. The filtered water is free of solid debris, effectively reducing the risk of nozzle clogging and extending the lifespan of the spray mechanism.

[0017] The water supply pipeline, serving as the water delivery channel, connects the spray mechanism to the filtered water area inside the equipment, ensuring a stable supply of clean water to the spray mechanism. The connection to the outlet of the negative pressure component allows the pressure from the discharged water to directly drive the spray mechanism, eliminating the need for additional power. The connection to the outside of the trash can allows direct access to water that has undergone preliminary filtration by the trash can, avoiding interference from the negative pressure component. This optional design of two connection methods enhances the flexibility of the equipment's internal layout, adapting to different structural design requirements.

[0018] In some exemplary embodiments of this application, the side cleaning mechanism of the pool cleaning equipment includes a first pump body disposed on a water supply pipe for generating pressure to direct water filtered through the trash can to the spray mechanism.

[0019] This solution actively increases the water pressure of the spray mechanism by adding an independent pressurizing component to the water supply pipeline, thereby enhancing the water flow's ability to disturb dirt. Independent pump control ensures that the spray pressure is unaffected by the water pressure in the main filtration path, allowing for adjustments based on different cleaning needs.

[0020] The first pump, acting as an independent power unit, pressurizes the water filtered through the trash can, giving the water jets from the spray mechanism higher kinetic energy. This higher kinetic energy water jet more effectively breaks down the adhesion between dirt and the contact surface, improving the cleaning ability for stubborn dirt. The independent operation of the first pump and the negative pressure component ensures that the operation of the spray mechanism does not interfere with the operation of the main cleaning system, guaranteeing the stability of the equipment in different modes.

[0021] In some exemplary embodiments of this application, the water spraying mechanism of the pool cleaning equipment includes at least one water spray nozzle, which is closer to the front end of the equipment body than the second inlet in the forward direction of the pool cleaning equipment.

[0022] This solution improves dirt collection efficiency by placing water spray nozzles in front of the second dirt inlet, creating a cleaning sequence of disturbance followed by adsorption. The pre-positioned water spray nozzles pre-treat the area the equipment will pass through, ensuring that dirt is suspended before reaching the second dirt inlet.

[0023] As the equipment moves along the edge, the water nozzles first reach the area to be cleaned, and the sprayed water impacts and removes dirt from the contact surface. Then, a second inlet follows, passing through the area and using negative pressure to suck in the suspended dirt. This interconnected layout minimizes the spread of dirt and ensures that disturbed dirt is collected promptly.

[0024] In some exemplary embodiments of this application, the angle between the opening orientation of the second sewage inlet of the pool cleaning equipment and the forward direction of the equipment body is 45°-135°, and the spray direction of the water spray nozzle forms an angle α with the opening orientation of the second sewage inlet, where α satisfies -90°≤α≤90°.

[0025] This solution improves dirt collection by limiting the angle range of the second inlet and the water spray nozzles, creating a reasonable spatial correspondence between the water spray disturbance area and the negative pressure adsorption area. The appropriate angle combination ensures that the sprayed water flow guides the dirt within the negative pressure range of the inlet, preventing it from being dispersed to other areas by the water flow.

[0026] The opening angle of the second inlet can cover the area on the side and front of the equipment, adapting to pool boundaries of different shapes. The angle between the water spray direction and the inlet's orientation allows the turbulence area created by the water flow to overlap with the negative pressure adsorption area of ​​the inlet. Dirt in the overlapping area is simultaneously affected by the turbulence of the water flow and the adsorption effect of the negative pressure, making it easier to be drawn into the equipment.

[0027] In some exemplary embodiments of this application, the angle between the opening orientation of the second sewage inlet of the pool cleaning equipment and the forward direction of the equipment body is 85°-95°, and the spray direction of the water spray nozzle forms an angle α with the opening orientation of the second sewage inlet, where α satisfies 0≤α≤35°.

[0028] This solution features an optimized combination of angles designed for the right-angled boundaries of conventional swimming pools. It concentrates the cleaning area of ​​the second waste inlet and the spray nozzles on the boundary area directly to the side of the equipment, improving cleaning effectiveness in the dead corners of typical swimming pools. The near-vertical orientation of the waste inlet directly faces the L-shaped dead corner formed by the pool wall and bottom, allowing negative pressure to act directly on the area where dirt accumulates.

[0029] The second wastewater inlet faces nearly perpendicular to the direction of travel, allowing it to extend to the outside of the equipment and close to the pool sidewall. The water spray nozzles are oriented nearly parallel to the wastewater inlet, directly directing dirt from dead-end areas towards it. The smaller spray angle reduces water spread, concentrating water energy more effectively on dead-end areas.

[0030] In some exemplary embodiments of this application, the water spray nozzle of the pool cleaning equipment is a flat nozzle, and the nozzle orifice is arranged vertically, with the water spray direction at least partially downward at an angle to the bottom of the pool.

[0031] This solution utilizes flat-shaped water nozzles, enabling a wider spray range at the same flow rate and improving cleaning efficiency. The vertically positioned nozzles and downward-sloping spray angle allow the water stream to simultaneously cover the junction of the pool walls and bottom, achieving thorough cleaning of hard-to-reach areas.

[0032] The flat nozzle compresses a circular water stream into a flat, fan-shaped flow, increasing the coverage width of the spray without increasing pump power. The vertically oriented nozzle allows the sprayed water curtain to extend vertically, covering the entire area from the lower part of the pool wall to the bottom edge. The downward-sloping spray angle allows the water to simultaneously impact both the pool wall and bottom, disrupting the adhesion of dirt to both surfaces.

[0033] In some exemplary embodiments of this application, the side cleaning mechanism of the pool cleaning equipment includes at least one roller brush, and the at least one roller brush is located in front of the second inlet along the forward direction of the equipment body.

[0034] This solution employs a roller brush as the side cleaning mechanism, which uses mechanical scrubbing to break down the adhesion of stubborn dirt and improves the cleaning ability of dirt in edge areas. The front-mounted roller brush layout allows for scrubbing before vacuuming, ensuring that the scrubbed dirt is collected promptly.

[0035] The bristles of the roller brush can reach deep into the tiny crevices of the pool walls and bottom, cleaning dirt that water cannot reach. The rotation of the roller brush generates mechanical impact and friction, which is more effective than simple water flow in breaking down the bond between stubborn dirt and the contact surface. The front-mounted roller brush layout ensures that the scrubbing action precedes the suction action, guaranteeing that the scrubbed dirt can be sucked in by the subsequent second inlet.

[0036] In some exemplary embodiments of this application, a control valve is provided in the water supply channel between the second inlet of the pool cleaning equipment and the trash can.

[0037] This solution achieves independent control of the second inlet's on / off state by installing a separate control component in the side inlet passage. The control valve can switch on / off states according to the equipment's operating mode, avoiding mutual interference between different cleaning modes.

[0038] When the equipment is in the normal bottom cleaning mode, the control valve is closed, cutting off the fluid passage between the second inlet and the trash can. At this time, the negative pressure generated by the negative pressure assembly is concentrated entirely at the first inlet, ensuring sufficient suction for bottom cleaning. When the equipment is in the edge cleaning mode, the control valve opens, connecting the second inlet to the trash can, allowing negative pressure to act on both inlets simultaneously. Independent control valves improve the flexibility and reliability of switching between operating modes.

[0039] In some exemplary embodiments of this application, a method for cleaning the edge of a swimming pool cleaning device is provided. The method includes: when the swimming pool cleaning device detects that the distance between the device body and the boundary of the current cleaning area is less than a preset threshold, controlling the second sewage inlet on the side of the device body to open; controlling the second sewage inlet to connect to a trash can, and under the operation of the negative pressure component, the second sewage inlet generates negative pressure, sucking in dirty water from the side into the trash can for filtration.

[0040] This method enables the automatic triggering and execution of edge cleaning functions without manual intervention, thus improving the intelligence level of the equipment. By triggering the side cleaning function through location recognition, the method ensures timely cleaning initiation when the equipment approaches the edge area, preventing any cleaning omissions.

[0041] The method first acquires distance information between the device and the area boundary through a detection component, which serves as a condition to trigger edge cleaning. When the trigger condition is met, the second waste inlet is opened, establishing fluid communication between the side and the waste bin. A negative pressure component, currently in operation, generates negative pressure at the second waste inlet, enabling the suction and filtration of dirt from the side. This method integrates with the device's existing negative pressure system, eliminating the need for additional power equipment and simplifying the control process.

[0042] In some exemplary embodiments of this application, the edge cleaning method of the pool cleaning equipment further includes: The side cleaning mechanism on the same side of the pool cleaning equipment is activated.

[0043] This method activates the side cleaning mechanism simultaneously during edge cleaning, forming a combined cleaning approach of active cleaning and negative pressure adsorption, thus improving the cleaning quality of edge areas. The synchronous activation of the side cleaning mechanism and the second inlet ensures the coordination of cleaning and adsorption actions in time and space.

[0044] The method involves activating a side cleaning mechanism located on the same side simultaneously with opening the second inlet. This side cleaning mechanism pre-treats the edge area, breaking down the adhesion between dirt and the contact surface, making it easier for dirt to be sucked into the second inlet. The activation of the cleaning mechanism on the same side ensures that cleaned dirt is immediately collected by the nearby inlet, reducing the spread of dirt.

[0045] In some exemplary embodiments of this application, in the edge cleaning method of the pool cleaning equipment, when the side cleaning mechanism includes a water spraying mechanism, the method includes: The water spraying mechanism is controlled to spray water onto the side of the equipment body to form a spraying area, which at least covers the boundary of the currently cleaned area.

[0046] This method controls the water spray mechanism to form a spray area covering the boundary, ensuring that all dirt in the edge areas is disturbed by the water flow, avoiding any cleaning omissions. Targeted water spray direction allows the water flow to concentrate on areas of dirt accumulation, improving the utilization rate of water flow energy.

[0047] The method controls the water spray mechanism to spray water onto the boundary area on the side of the equipment, creating a spray area that completely covers the junction of the pool wall and bottom. The sprayed water impacts the dirt in the boundary area, causing it to detach from the contact surface and suspend in the water. The complete coverage of the boundary by the spray area ensures that every part of the edge area is impacted by the water flow, achieving thorough cleaning.

[0048] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0049] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0050] Figure 1 A three-dimensional structural schematic diagram of a swimming pool cleaning device provided in one embodiment of this application is shown.

[0051] Figure 2 This illustration shows a three-dimensional structural diagram of a swimming pool cleaning device provided in one embodiment of this application from another angle.

[0052] Figure 3 This illustration shows a simplified schematic diagram of the internal structure of a swimming pool cleaning device provided in one embodiment of this application from a frontal view.

[0053] Figure 4 The diagram shows a simplified internal structure of a swimming pool cleaning device provided in one embodiment of this application, viewed from above.

[0054] Figure 5 This illustration shows a control flow diagram of an edge cleaning method for a swimming pool cleaning device according to an embodiment of this application.

[0055] The above figures include the following reference numerals: 1. Main body of the equipment; 11. First sewage inlet; 12. Water outlet; 2. Trash can; 3. Negative pressure component; 4. Second sewage inlet; 5. Side cleaning mechanism; 51. Water spraying mechanism; 511. Water spray nozzle; 52. Water supply pipe; 53. First pump body; 6. Control valve. Detailed Implementation

[0056] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0058] In the description of the embodiments of this application, the technical terms "first," "second," "third," "fourth," "fifth," etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0059] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0060] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0061] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0062] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0063] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0064] Please see Figures 1 to 4 In some exemplary embodiments of this application, the swimming pool cleaning equipment includes a main body 1, a trash can 2, a negative pressure component 3, and a first inlet 11 and an outlet 12 disposed on the main body 1. The main body 1 is provided with at least one filtration passage. The trash can 2 and the negative pressure component 3 are both located in the filtration passage. The negative pressure component 3 is configured to drive the water flow in the filtration passage, so that the water enters from the first inlet 11, is filtered by the trash can 2, and is discharged from the outlet 12. The side of the main body 1 is also provided with at least one second inlet 4, which is connected to the filtration passage and is configured to generate negative pressure under the operation of the negative pressure component 3, so as to draw in dirty water from the side and enter the trash can 2 for filtration.

[0065] This solution adds a sludge inlet structure connected to the main filtration channel on the side of the equipment. Utilizing the pressure difference generated by the main negative pressure component 3 within the filtration channel, a localized negative pressure field is created at the side sludge inlet. This negative pressure field disturbs the previously relatively still water in the side area, disrupting the adhesion between the dirt and the contact surfaces of the pool walls and bottom, causing the dirt to detach from the contact surfaces and suspend in the water. Under the influence of the negative pressure field, the suspended dirt flows with the water into the second sludge inlet 4 and is ultimately trapped by the trash can 2. The connection between the side sludge inlet and the main filtration channel allows the side suction action and the bottom main cleaning action to be performed simultaneously, sharing the same power and filtration system, thus simplifying the overall structure of the equipment.

[0066] In some alternative embodiments, the second inlet 4 is configured as an elongated opening extending along the length of the side of the equipment. This design can increase the single-pass coverage width of side cleaning and reduce the number of times the equipment travels along the edge.

[0067] In some alternative embodiments, a second wastewater inlet 4 is provided on each of the left and right sides of the main body 1. This solution can simultaneously cover the edge areas on both sides of the device, making it suitable for cleaning scenarios involving the double edges of pool steps or other similar surfaces.

[0068] In some alternative embodiments, the filtration pathways are configured in parallel, with the first inlet 11 and the second inlet 4 connected to the trash can 2 via independent branches. This design facilitates individual control of the water flow in each branch, enabling flexible switching between different cleaning modes.

[0069] In some exemplary embodiments of this application, a detection element is provided on the side of the main body 1 of the pool cleaning equipment. The detection element is used to identify the distance between the main body 1 and the boundary of the current cleaning area. The second sewage inlet 4 is configured to be activated when the distance between the main body 1 and the boundary of the current cleaning area is less than a preset threshold.

[0070] This solution uses a position detection component installed on the side of the equipment to monitor the distance between the equipment and the boundaries of areas such as pool sidewalls and steps in real time. When the distance between the equipment and the boundary reaches a preset value, the detection component sends a trigger signal to the control unit. Upon receiving the signal, the control unit issues a command to open the side inlet, putting the equipment into edge cleaning mode.

[0071] When the device moves away from the edge area and the detected distance exceeds a preset threshold, the control unit issues a command to close the side inlet, and the device resumes its normal bottom cleaning mode. The linkage control between the detection element and the second inlet 4 allows the side cleaning function to automatically match the device's movement path without manual intervention.

[0072] In some alternative embodiments, the detection element can be an ultrasonic sensor, which calculates the distance between the device and the boundary by emitting and receiving ultrasonic signals. This method offers high detection accuracy and is suitable for swimming pool environments with varying water qualities.

[0073] In some alternative embodiments, the detection element can be an infrared sensor, capable of rapidly responding to changes in distance. This approach offers fast response times and is suitable for dynamic detection scenarios involving high-speed movement of equipment.

[0074] In some alternative embodiments, the detection element can be a Time-of-Flight (TOF) sensor, which calculates the distance between the device and the boundary by emitting light pulses and detecting the time of flight of the reflected signals. This approach offers high ranging accuracy, is less affected by changes in water turbidity and ambient light, maintains stable detection performance in different swimming pool environments, and has strong adaptability.

[0075] In some alternative embodiments, the preset threshold can be set to a value between 0mm and 100mm. This range can cover the structural characteristics of most swimming pools, ensuring that the side inlet activates at an appropriate distance.

[0076] In some alternative embodiments, the preset threshold can be set to a value between 0 mm and 40 mm.

[0077] In some exemplary embodiments of this application, a side cleaning mechanism 5 is also provided on the side of the main body 1 of the pool cleaning equipment, and the side cleaning mechanism 5 and the second sewage inlet 4 are located on the same side of the main body 1.

[0078] This solution utilizes a separate cleaning mechanism on the side of the equipment, complementing the side inlet. The side cleaning mechanism 5 directly contacts the dirt through mechanical or fluid action, breaking the adhesion between the dirt and the pool walls and bottom. The side inlet then draws the dirt that has detached from the contact surface into the equipment for collection. The combined operation of these two mechanisms effectively enhances the cleaning capability for stubborn dirt in edge areas.

[0079] In some alternative embodiments, the side cleaning mechanism 5 employs a scraper structure, which removes attached dirt by sliding relative to the contact surface. This solution is simple in structure, highly reliable, and suitable for cleaning large areas of sheet-like dirt.

[0080] Furthermore, the scraper structure can be set at the rear end opposite to the second sewage inlet 4. Under the restriction of the scraper, the dirt attached to the side wall will fall off and move forward under the action of the scraper, and be sucked in by the second sewage suction port located on the front side.

[0081] In some alternative embodiments, the side cleaning mechanism 5 employs a brush structure, using the friction of the bristles to clean dirt from crevices. This solution can reach deep into tiny crevices, cleaning dirt that water cannot reach.

[0082] In some alternative embodiments, the side cleaning mechanism 5 is configured as a telescopic structure, capable of adjusting its extension length according to the distance between the device and the boundary. This design ensures effective contact between the cleaning mechanism and the contact surface, adapting to edge cleaning needs at different distances.

[0083] Please see Figures 1 to 4 In some exemplary embodiments of this application, the side cleaning mechanism 5 of the pool cleaning equipment includes a water spraying mechanism 51, which is connected to the outlet of the negative pressure component 3 and / or the outside of the trash can 2 via a water supply pipe 52.

[0084] This design connects the inlet of the side spray mechanism 51 to the filtered water area inside the equipment, allowing the spray mechanism 51 to use clean water filtered by the trash can 2 for spraying. When the negative pressure component 3 operates, water flow is created within the filtration passage. Part of the clean water filtered by the trash can 2 is discharged from the outlet 12, while the other part enters the spray mechanism 51 through the water supply pipe 52. The spray mechanism 51 sprays the clean water at a certain pressure, creating a water flow that impacts the dirt in the side area, causing it to detach from the contact surface.

[0085] The linkage between the water spray mechanism 51 and the negative pressure component 3 allows the water spraying action to be synchronized with the negative pressure suction action, forming a disturbance-adsorption cleaning process. Using internally filtered water as the water source eliminates the need for additional pipes to draw water from the pool, further simplifying the equipment structure and preventing impurities from the pool from clogging the water supply pipe 52 and nozzles.

[0086] In some alternative embodiments, the inlet of the spray mechanism 51 is simultaneously connected to the outlet of the negative pressure component 3 and the outside of the trash can 2, and different water sources are switched via a three-way valve. These different water sources include stored water, internal water, or water from the swimming pool. This solution allows for the selection of different water supply methods according to actual needs, improving the adjustability of the spray pressure.

[0087] In some alternative embodiments, the inlet of the water spray mechanism 51 is connected to the outlet of the negative pressure component 3. The negative pressure component 3 has the function of actively pressurizing and spraying water, and can directly utilize the fluid pressure to make the water spray mechanism 51 spray water. This method reuses the negative pressure component 3, which can reduce the setting of power components inside the equipment and increase practicality.

[0088] In some alternative embodiments, the water inlet of the water spray mechanism 51 is connected to the outside of the trash can 2, directly utilizing the filtered water.

[0089] In some alternative embodiments, the water supply pipe 52 is a flexible hose. This design facilitates layout and connection within the equipment and can adapt to different internal space structures.

[0090] In some exemplary embodiments of this application, the side cleaning mechanism 5 of the pool cleaning equipment includes a first pump body 53, which is disposed on the water supply pipe 52 and is used to generate pressure to direct the water filtered by the trash can 2 to the spray mechanism 51.

[0091] This solution provides a stable and adjustable water pressure to the spray mechanism 51 by adding an independent booster pump in the water supply pipe 52. When cleaning firmly attached dirt, the output power of the first pump 53 can be increased to enhance the impact force of the water spray. When cleaning light, suspended dirt, the output power of the first pump 53 can be reduced to decrease energy consumption. The first pump 53 ensures that the spray mechanism 51 can achieve a stable pressure output, unaffected by fluctuations in the water flow through the main filtration channel.

[0092] In some alternative embodiments, the first pump body 53 employs a miniature centrifugal pump. This design is compact, provides stable output pressure, and is suitable for underwater equipment installation environments.

[0093] In some alternative embodiments, the first pump body 53 is electrically connected to the control unit of the equipment, enabling it to automatically adjust its output power according to the equipment's operating mode. This solution achieves automatic control of the water spray pressure, improving the equipment's level of intelligence.

[0094] In some alternative embodiments, a pressure regulating valve is provided on the water supply pipe 52, which allows for manual adjustment of the water pressure output from the spray mechanism 51. This design facilitates personalized adjustments by the user based on actual cleaning needs.

[0095] In some exemplary embodiments of this application, a flow control valve is also provided in the water supply pipe 52 and between the first pump body 53 and the water spraying mechanism 51 to control the fluid flow rate in the water supply pipe 52 so that the water spraying mechanism 51 can output water spraying flow corresponding to the scene.

[0096] This solution adds a flow regulation function to the original pressurized water supply structure, enabling the water output of the spray mechanism 51 to match different cleaning scenarios and improving the equipment's adaptability to complex and dirty conditions. By precisely controlling the fluid flow rate within the water supply pipe 52, unnecessary energy consumption can be reduced while ensuring cleaning effectiveness, thus extending the equipment's operating time.

[0097] A flow control valve is positioned between the first pump body 53 and the spray mechanism 51, directly regulating the pressurized water flow output from the first pump body 53 and avoiding the impact of pipeline pressure loss on regulation accuracy. The flow control valve adjusts the flow area of ​​the water supply pipe 52 by changing its opening, thereby altering the fluid velocity within the pipe and ultimately controlling the outlet pressure and spray range of the spray mechanism 51. This correlation between flow velocity and spray effect allows the equipment to output the most suitable water flow for different types of contaminants.

[0098] The first pump 53 pressurizes the water filtered by the trash can 2 and delivers it to the flow control valve. The flow control valve adjusts the water flow rate according to the needs of the current cleaning scenario, keeping the water entering the spray mechanism 51 within a preset flow rate range. The adjusted water flow is finally sprayed out through the spray mechanism 51, forming a water flow intensity that matches the current level of dirt. When the equipment encounters stubborn dirt such as firmly attached mud, sand, and algae, the flow control valve increases its opening, increases the water flow rate, and enhances the impact force of the spray. When the equipment cleans light, suspended dirt such as fallen leaves and hair, the flow control valve decreases its opening, reduces the water flow rate, and prevents the water flow from scattering the dirt to other areas.

[0099] In some alternative embodiments, the flow control valve is an electromagnetic flow control valve, electrically connected to the equipment's control unit. This solution enables automatic regulation of the water flow rate, and the control unit can automatically adjust the valve opening based on the detected level of dirt.

[0100] In some alternative embodiments, the flow control valve is a manual flow control valve, with the valve adjustment knob located externally to the equipment. This design allows users to manually adjust the water flow intensity according to actual cleaning needs, and the operation is simple and intuitive.

[0101] In some alternative embodiments, the flow control valve is a proportional flow control valve, which enables linear and continuous adjustment of the flow rate. This approach offers higher adjustment precision, can output a wider range of water flow states, and is adaptable to more diverse cleaning scenarios.

[0102] Please see Figures 1 to 4 In some exemplary embodiments of this application, the water spraying mechanism 51 of the pool cleaning equipment includes at least one water spray nozzle 511, which is closer to the front end of the equipment body 1 than the second sewage inlet 4 in the forward direction of the pool cleaning equipment.

[0103] This design positions the water spray nozzle 511 upstream of the second inlet 4 in the forward direction, ensuring that the water spray agitation occurs before the negative pressure adsorption action. As the equipment moves along the edge at a certain speed, the distance between the water spray nozzle 511 and the second inlet 4 translates into a time difference. This time difference ensures that the dirt, after being agitated by the water flow, has sufficient time to remain suspended in the water before being sucked in by the subsequently arriving second inlet 4. The front-to-back arrangement of the water spray nozzle 511 and the second inlet 4, coordinated with the equipment's direction of travel, creates a continuous cleaning process.

[0104] In some alternative embodiments, the number of water spray nozzles 511 is two, arranged vertically along the height direction of the side of the device.

[0105] This solution can simultaneously cover the junction of the pool wall and the pool bottom, expanding the vertical coverage of the disturbed area. In some alternative embodiments, the installation angle of the water spray nozzle 511 is adjustable. This solution can adjust the water spray direction according to different cleaning scenarios, adapting to edge areas of different shapes.

[0106] In some alternative embodiments, the water spray nozzle 511 is connected to the device body 1 via a hinge structure. This design facilitates angle adjustment and maintenance / replacement.

[0107] In some alternative embodiments, the water spraying mechanism 51 includes two water spray nozzles 511, respectively disposed at the opposite front end and opposite rear end of the second sewage inlet 4. This design can simultaneously create water flow disturbance areas on both the front and rear sides of the second sewage inlet 4, covering a longer edge cleaning path and preventing dirt from escaping from both the front and rear ends of the second sewage inlet 4.

[0108] Based on this scheme, the orientation of the two nozzles can be set to be the same, which can form a continuous and uniform disturbance zone, suitable for edge areas where dirt is evenly distributed.

[0109] Alternatively, the angle between the nozzle at the rear end and the direction of travel can be set to be smaller than the angle between the nozzle at the front end and the direction of travel. This solution can create a gradient disturbance effect, with the front nozzle causing a large-scale disturbance in the area in front at a larger angle, causing dirt to detach from the contact surface; the rear nozzle directs the remaining dirt directly to the second inlet 4 at a smaller angle, improving the dirt collection efficiency.

[0110] In some alternative embodiments, the water spray mechanism 51 has a nozzle positioned above the second inlet 4, with the nozzle angled downwards. This design can cover the pool wall area above the second inlet 4, impacting dirt adhering to higher positions on the pool wall and causing it to fall into the negative pressure range of the second inlet 4, supplementing the vertical cleaning coverage.

[0111] In some alternative embodiments, the water spray mechanism 51 has a nozzle located below the second inlet 4. This design can directly impact stubborn dirt on the edge of the pool bottom, breaking its adhesion to the pool bottom, while simultaneously lifting the dirt upwards and allowing it to enter the negative pressure adsorption area of ​​the second inlet 4, thus improving the cleaning effect on dirt on the edge of the pool bottom.

[0112] Please see Figure 4 In some exemplary embodiments of this application, the angle between the opening direction of the second sewage inlet 4 of the pool cleaning equipment and the forward direction of the equipment body 1 is 45°-135°, and the spray direction of the water spray nozzle 511 forms an angle α with the opening direction of the second sewage inlet 4, where α satisfies -90°≤α≤90°.

[0113] This solution coordinates the effective areas of the second inlet 4 and the water spray nozzle 511 by limiting their angle parameters. The opening direction of the second inlet 4 determines the location and range of the negative pressure adsorption zone, while the spray direction of the water spray nozzle 511 determines the location and range of the water flow disturbance zone. By limiting their angles within a certain range, effective overlap between the disturbance zone and the adsorption zone can be ensured. When dirt is disturbed by the water flow, it directly enters the negative pressure adsorption zone and is sucked in by the second inlet 4. The angle range setting can adapt to different equipment layouts and cleaning needs, ensuring consistent cleaning results.

[0114] The angle between the opening of the second sewage inlet 4 and the direction of travel is limited to 45°-135°. This is determined based on a combination of the effective coverage range and negative pressure utilization efficiency when the equipment travels along the edge. When the angle is less than 45°, the sewage inlet is too far forward of the equipment, and the negative pressure area on the side will shift towards the front of the equipment, failing to effectively cover the junction of the pool wall and the pool bottom. When the angle is greater than 135°, the sewage inlet is too far backward of the equipment, causing the negative pressure suction field to be opposite to the direction of travel of the equipment. This makes it easier for dirt to be carried away by the water flow generated by the movement of the equipment, reducing collection efficiency.

[0115] The angle between the water spray direction and the inlet direction is limited to -90°≤α≤90° to ensure that the dirt generated by the water spray disturbance can enter the negative pressure range of the inlet. When α exceeds this range, the water spray direction will create excessive opposition or divergence with the suction direction of the inlet, and the water flow will wash the dirt away from the negative pressure area, making effective collection impossible. This angle range allows the disturbance area created by the water spray to at least partially overlap with the negative pressure adsorption area, ensuring the continuity of the cleaning process.

[0116] In some alternative embodiments, the opening of the second waste inlet 4 is perpendicular to the forward direction of the equipment body 1. This design allows it to be directly aligned with the junction of the pool sidewall and the pool bottom, concentrating the negative pressure area on the location where dirt accumulation is most severe.

[0117] In some alternative embodiments, the water spray direction of the water nozzle 511 is the same as the opening direction of the second sewage inlet 4. This design allows dirt to be directly flushed towards the sewage inlet, improving the efficiency of dirt collection.

[0118] In some alternative embodiments, the water spray direction of the water nozzle 511 forms a 45° angle with the opening orientation of the second sewage inlet 4. This arrangement can expand the coverage of the disturbed area and is suitable for cleaning wider edge areas.

[0119] In some alternative embodiments, the angle between the opening orientation of the second inlet 4 and the forward direction of the device body 1 is less than 90 degrees. This design causes the inlet to face slightly to the side and front of the device, enabling it to cover the edge area the device is about to pass through in advance and collect dirt in front of it during the device's movement. This is suitable for scenarios such as pool corners where the cleaning direction needs to be adjusted in advance. At the same time, the side-facing opening orientation reduces the interference of water flow generated during the device's movement on the negative pressure field, improving the stability of dirt collection.

[0120] In some exemplary embodiments of this application, the angle between the opening direction of the second sewage inlet 4 of the pool cleaning equipment and the forward direction of the equipment body 1 is 45°-135°, and the angle α between the spray direction of the water nozzle 511 and the opening direction of the second sewage inlet 4 satisfies -90°≤α≤90°; wherein, when the angle between the spray direction of the water nozzle 511 and the forward direction is greater than 90 degrees and it is located at the front end of the second sewage inlet 4, the angle between the opening direction of the second sewage inlet 4 and the forward direction of the equipment body 1 is less than 90 degrees, and the angle α is positively correlated with the distance between the water nozzle 511 and the second sewage inlet 4; when the angle between the spray direction of the water nozzle 511 and the forward direction is less than 90 degrees and it is located at the front end of the second sewage inlet 4, the angle α is negatively correlated with the distance between the water nozzle 511 and the second sewage inlet 4.

[0121] This solution establishes a quantitative correspondence between the included angle α and the distance between the nozzle and the inlet, enabling optimization of the water spray direction based on the actual equipment layout. This ensures that nozzles in different positions can achieve optimal dirt guidance, improving the adaptability and consistency of the cleaning system. This dynamically matched angle design can adapt to the internal layout requirements of equipment of different sizes, guaranteeing stable cleaning results under different structural designs.

[0122] When the angle between the spray direction of the water nozzle 511 and the forward direction is greater than 90 degrees, the water flow from the nozzle will flow backward towards the rear of the equipment. In this case, increasing the included angle α allows the water flow to be directed more directly towards the second inlet 4, counteracting the backward flow tendency. As the distance between the nozzle and the inlet increases, the water flow diffusion range increases; therefore, the included angle α needs to be increased accordingly to ensure that the core area of ​​the water flow is always aligned with the center of the inlet, guaranteeing that the dirt can be effectively guided.

[0123] When the angle between the spray direction of the water nozzle 511 and the forward direction is less than 90 degrees, the water flow from the nozzle will flow forward towards the equipment. In this case, reducing the included angle α can prevent the water flow from washing away the dirt from the negative pressure area of ​​the inlet. As the distance between the nozzle and the inlet increases, the kinetic energy of the water flow will weaken when it reaches the inlet. Therefore, it is necessary to reduce the included angle α accordingly to make the direction of the water flow closer to the opening of the inlet, ensuring that the dirt can smoothly enter the negative pressure range.

[0124] In some exemplary embodiments of this application, the angle between the opening direction of the second sewage inlet 4 of the pool cleaning equipment and the forward direction of the equipment body 1 is 85°-95°, and the spray direction of the water spray nozzle 511 forms an angle α with the opening direction of the second sewage inlet 4, where α satisfies 0≤α≤35°.

[0125] This design optimizes the right-angled boundary structure used in most swimming pools. The second waste inlet 4 is essentially perpendicular to the direction of the equipment's movement, directly facing the L-shaped junction formed by the pool wall and bottom, allowing the negative pressure field to cover the entire dead-angle area. The water spray nozzle 511's spray direction is nearly parallel to the waste inlet's orientation, allowing the sprayed water to flow along the junction of the pool wall and bottom, washing away dirt adhering to the two contact surfaces and directly flushing it towards the second waste inlet 4. This angle combination ensures that the water spray disturbance area and the negative pressure adsorption area highly overlap, improving the collection efficiency of dirt in dead-angle areas.

[0126] The angle between the opening of the second waste inlet 4 and the direction of travel is limited to 85°-95°, which is the optimal range for the right-angled boundary structure of a conventional swimming pool. This angle range ensures that the waste inlet is essentially perpendicular to the direction of travel, allowing it to be as close as possible to the pool sidewall. This ensures that the negative pressure area is precisely aligned with the L-shaped junction formed by the pool wall and bottom, which is the location where dirt accumulates most. When the angle is less than 85°, the waste inlet will be biased towards the front of the equipment, resulting in insufficient negative pressure strength at the lower part of the sidewall, making it impossible to effectively collect dirt adhering to the sidewall. When the angle is greater than 95°, the waste inlet will be biased towards the rear of the equipment, making it susceptible to interference from the wake generated by the equipment's movement, leading to an unstable negative pressure field and reducing the consistency of dirt collection.

[0127] The angle between the water spray direction and the inlet's orientation is limited to 0°≤α≤35°, determined based on a balance between the water flow disturbance effect and the dirt guiding effect. This angle range ensures that the disturbance area created by the water spray highly overlaps with the negative pressure adsorption area of ​​the inlet, while avoiding interference from the water flow to the negative pressure field. When α is greater than 35°, the water flow will be too biased towards the front of the equipment, washing the dirt away from the negative pressure range and causing dirt diffusion; when α is less than 0°, the water flow will oppose the suction direction of the inlet, dispersing the negative pressure energy and reducing the adsorption capacity of the inlet. This angle range has been verified through fluid simulation and practical application, achieving optimal dirt guiding effect while ensuring the disturbance effect.

[0128] In some alternative embodiments, the angle between the opening orientation of the second sewage inlet 4 and the forward direction of the equipment body 1 is 90°, and the angle α between the spray direction of the water spray nozzle 511 and the opening orientation of the second sewage inlet 4 is equal to 30°.

[0129] This solution features an optimal combination of parameters designed for the right-angled boundaries of standard rectangular swimming pools, enabling comprehensive coverage and efficient cleaning of L-shaped dead-angle areas. The 90° inlet orientation, perfectly perpendicular to the equipment's direction of travel, minimizes the distance between the inlet's edge and the pool sidewall, ensuring the negative pressure field completely covers the junction of the pool wall and bottom, leaving no area untouched. A 30° spray angle directs the water flow at an angle, impacting the inner corners of the dead-angle area. The resulting localized vortex lifts up dirt deep within the corners, while the water flow direction directs the lifted dirt directly to the center of the inlet for easy suction under negative pressure.

[0130] This parameter combination balances the impact and guiding force of the water flow, effectively breaking down the adhesion of stubborn dirt while preventing it from being washed away. In practical applications, this combination demonstrates good collection performance for common pool debris such as silt, fallen leaves, and hair. It is suitable for cleaning right-angled edges of most private and public pools and can be used as a standard configuration for mass-produced equipment.

[0131] In some alternative embodiments, the opening of the second inlet 4 is perpendicular to the forward direction of the device body 1. This arrangement achieves optimal alignment, concentrating the negative pressure area. In some alternative embodiments, the spray direction of the water nozzle 511 forms a 15° angle with the opening of the second inlet 4. This arrangement balances disturbance range and guiding effect, making it suitable for most conventional swimming pools.

[0132] In some alternative embodiments, the spray direction of the water nozzle 511 can be manually adjusted within the range of 0°-35°. This design can adapt to pools of different depths, ensuring that the water flow accurately impacts the interface between the pool wall and the pool bottom.

[0133] In some exemplary embodiments of this application, the water spray nozzle 511 of the pool cleaning equipment is a flat nozzle, and the nozzle orifice is arranged vertically, with its spray direction at least partially downward at an angle to the bottom of the pool.

[0134] This solution employs a flat-shaped water nozzle 511, utilizing the fluid's adhesion effect to compress the water flow into a flat, fan-shaped pattern. This water flow pattern achieves a wider spray range than a circular nozzle at the same flow rate, increasing the cleaning area per unit time.

[0135] The nozzles are vertically positioned, allowing the sprayed water curtain to expand vertically, covering the lower part of the pool wall and the edge of the pool bottom. The downward-sloping spray angle allows the water flow to impact the interface between the pool wall and the pool bottom at a certain angle of incidence. The resulting impact force acts on both contact surfaces simultaneously, causing dirt adhering to the interface to detach.

[0136] In some alternative embodiments, the nozzle width of the flat nozzle is 5mm-15mm. This range can be adjusted according to the size of the equipment to ensure appropriate spray width and water pressure.

[0137] In some alternative embodiments, the minimum angle between the water spray direction and the pool bottom is 15°-45°. This angle range allows for good cleaning of both the pool walls and the pool bottom simultaneously.

[0138] In some alternative embodiments, the flat nozzle has a detachable structure. This design facilitates cleaning and replacement, and allows for quick repairs when the nozzle becomes clogged or damaged.

[0139] In some exemplary embodiments of this application, the side cleaning mechanism 5 of the pool cleaning equipment includes at least one roller brush, and along the forward direction of the equipment body 1, at least one roller brush is located in front of the second inlet 4.

[0140] This solution employs a roller brush as the side cleaning mechanism 5. Through the high-speed rotation of the roller brush, the friction between the bristles and the pool walls and bottom removes firmly attached dirt. The roller brush is positioned in front of the second inlet 4. As the equipment moves along the edge, the roller brush first contacts the area to be cleaned, brushing off the dirt and suspending it in the water. Subsequently, the second inlet 4 passes through this area, using negative pressure to suck in the suspended dirt. The combination of the mechanical cleaning action of the roller brush and the negative pressure adsorption of the second inlet 4 effectively enhances the cleaning ability for stubborn dirt.

[0141] In some alternative embodiments, the brush bristles can be made of nylon. This material has good abrasion resistance and elasticity, making it suitable for underwater working environments.

[0142] In some alternative embodiments, the rotation speed of the roller brush is adjustable. This design allows for adjustment of the scrubbing intensity according to the degree of soiling, making it suitable for different cleaning needs.

[0143] In some alternative embodiments, the axis of the roller brush is perpendicular to the forward direction of the device body 1. This design achieves maximum brushing width and improves cleaning efficiency.

[0144] Please see Figure 3 In some exemplary embodiments of this application, a control valve 6 is provided in the water supply channel between the second sewage inlet 4 of the pool cleaning equipment and the trash can 2.

[0145] This solution achieves independent control of the side inlet passage by installing a control valve 6 in the channel between the second inlet 4 and the trash can 2. The control valve 6, acting as a switching component for the fluid passage, can quickly switch between on and off states according to the control unit's instructions. When the equipment enters the edge cleaning mode, the control valve 6 opens, establishing fluid communication between the second inlet 4 and the trash can 2, allowing the negative pressure generated by the negative pressure assembly 3 to act on the second inlet 4. When the equipment exits the edge cleaning mode, the control valve 6 closes, cutting off the side passage and concentrating all negative pressure at the main inlet. The control valve 6 prevents the side inlet from diverting negative pressure in non-edge cleaning modes, ensuring the effectiveness of regular pool bottom cleaning.

[0146] In some alternative embodiments, control valve 6 is a solenoid valve. This solution enables rapid on / off control via electrical signals, offering fast response and high control precision.

[0147] In some alternative embodiments, the control valve 6 is electrically connected to the control unit of the equipment and can automatically switch states according to the operating mode of the equipment. This solution achieves automated control of the control valve 6 without manual intervention.

[0148] Please see Figure 3In some exemplary embodiments of this application, the control valve 6 includes a drive motor and a check valve, wherein the drive motor is operatively connected to the check valve and is used to control the opening and closing of the check valve.

[0149] This solution combines the advantages of active control and passive backflow prevention, enabling precise on / off control of the side inlet channel while effectively preventing spillage from the trash can 2, thus improving system reliability. Compared to a single solenoid valve structure, this combined structure allows the one-way valve to automatically close in the event of a power outage or system failure, preventing dirt from flowing back into the pool from the second inlet 4 and ensuring the safety of the cleaning process.

[0150] The drive motor, as an active control component, is electrically connected to the equipment's control unit. It receives electrical signals from the control unit and converts them into mechanical motion, driving the valve core of the one-way valve to rotate or move, thus opening and closing the passage. The control unit can precisely control the timing and stroke of the drive motor according to the equipment's operating mode, ensuring that the on / off state of the control valve 6 matches the cleaning requirements. The one-way valve adopts an elastic sealing structure, and its valve core only allows water to flow unidirectionally from the second inlet 4 to the trash can 2. When the negative pressure component 3 is operating, the water pressure can push open the valve core, allowing dirty water to pass smoothly; when the negative pressure component 3 stops or the control valve 6 is closed, the valve core automatically resets and seals under its own elastic force and reverse water pressure, blocking the reverse flow path of water and preventing the dirt collected in the trash can 2 from overflowing.

[0151] In some alternative embodiments, the sealing spool of the one-way valve is made of silicone material. This material has good elasticity and sealing performance, ensuring a tight fit between the spool and the seat, while also being water-resistant and chlorine-resistant, making it suitable for swimming pool environments.

[0152] In some alternative embodiments, a stepper motor is used as the drive motor. This motor enables precise angle control, facilitating the adjustment of the opening of the control valve 6 to achieve different flow rates.

[0153] In some alternative embodiments, the check valve and drive motor are integrated into a single unit. This design reduces the overall size of the control valve 6, facilitating installation and arrangement within the equipment.

[0154] In some exemplary embodiments of this application, the inlet edge of the second inlet 4 of the pool cleaning device is made of a flexible material.

[0155] This solution effectively prevents the second sewage inlet 4 from interfering with the pool sidewalls, steps, and other structures during the equipment's movement along the edge, protecting both the equipment and the pool structure from damage. Simultaneously, the flexible material undergoes elastic deformation upon contact with the pool sidewalls, creating a better seal between the sewage inlet and the sidewalls, reducing negative pressure leakage, and improving the efficiency of side-mounted sewage suction.

[0156] The edge of the second wastewater inlet 4 is integrally molded from a flexible material and fixedly connected to the rigid outer shell of the main body 1. When the equipment approaches the side wall of the pool, the edge of the flexible wastewater inlet first contacts the side wall, undergoing elastic deformation under the thrust of the equipment to absorb collision energy and avoid direct impact between rigid components. This elastic contact can adapt to the slight unevenness of the pool side wall, ensuring that the wastewater inlet always remains in close contact with the side wall, preventing external water from entering through gaps and ensuring that negative pressure is concentrated in the area in front of the wastewater inlet. At the same time, the cushioning effect of the flexible material reduces noise when the equipment moves, improving the user experience.

[0157] In some alternative embodiments, the entire inlet housing of the second inlet 4 is made of a flexible material. This design provides a greater range of deformation to accommodate more complex pool boundary shapes.

[0158] In some alternative embodiments, the flexible material is a thermoplastic elastomer (TPE). This material has good elasticity and abrasion resistance, and can maintain stable performance under long-term repeated impacts and friction.

[0159] In some alternative embodiments, the thickness of the flexible inlet edge is set to 2mm-5mm. This thickness range balances structural strength and elastic deformation capacity, ensuring a good seal while providing sufficient service life.

[0160] Please see Figure 5 In some exemplary embodiments of this application, a method for cleaning the edge of a swimming pool cleaning device is provided, comprising: S10, when the pool cleaning equipment detects that the distance between the main body of the equipment and the boundary of the current cleaning area is less than a preset threshold, the second sewage inlet on the side of the main body of the equipment is opened. S20 controls the second sewage inlet to connect to the trash can. Under the operation of the negative pressure component, the second sewage inlet generates negative pressure, drawing in dirty water from the side and filtering it into the trash can.

[0161] This method first uses a detection component on the device to acquire real-time distance information between the device and the surrounding area boundary. When the detected distance between the device and the boundary is less than a preset threshold, the detection component sends a trigger signal to the control unit. Upon receiving the signal, the control unit issues a command to open the control valve of the second side inlet, connecting the second inlet to the trash can. At this time, the negative pressure generated by the operating negative pressure component within the filtration path acts on the second inlet, creating a suction field on the side. This suction field draws in dirty water from the side area, filters it through the trash can, and then discharges it. This method utilizes the existing system of the equipment to achieve edge cleaning, with a simple control process and high reliability.

[0162] In some alternative embodiments, when the distance between the device and the area boundary is detected to be less than a preset threshold, the device is simultaneously controlled to adjust its walking speed, moving along the boundary at a slower pace. This approach can extend the time the device spends in the edge area, improving the cleaning effect.

[0163] In some alternative embodiments, the preset threshold can be manually set via the device's control interface. This allows users to personalize the settings according to the actual conditions of the swimming pool.

[0164] In some alternative embodiments, if the device operates continuously in edge cleaning mode for more than a preset time, it automatically exits edge cleaning mode and resumes regular cleaning. This solution avoids the device remaining in the same area for an extended period, improving overall cleaning efficiency.

[0165] In some exemplary embodiments of this application, the preset threshold is set to 0mm-100mm.

[0166] The preset threshold range of this solution is determined based on the conventional structural characteristics of pool cleaning equipment, enabling precise adaptation to side blind spots that cannot be covered by the first inlet, achieving seamless coverage of the cleaning range. By matching the trigger distance with the width of the blind spots on the equipment itself, it ensures that the side cleaning function is activated only in areas that cannot be effectively covered by the first inlet, avoiding unnecessary negative pressure diversion.

[0167] Generally, due to the layout limitations of the walking mechanisms on both sides of the equipment, the edge of the first inlet cannot extend to the outermost part of the equipment body. A gap is formed between the edge of the first inlet and the side of the equipment body, which cannot be covered by the bottom negative pressure. This gap is the inherent dead angle for regular cleaning, and its width is usually less than 40mm. Setting the preset threshold to 0mm-40mm ensures that when the distance between the equipment and the pool boundary is less than this value, the second inlet precisely aligns with the dead angle formed by the gap, filling the cleaning gap left by the first inlet. When the distance between the equipment and the boundary is within this range, the negative pressure field of the second inlet can completely cover the gap that the first inlet cannot reach, preventing any cleaning omissions. If the preset threshold is greater than 40mm, the second inlet will activate prematurely before the equipment reaches the dead angle, and the side negative pressure will disperse the suction of the main inlet, affecting the regular pool bottom cleaning effect. If the preset threshold is less than 0mm, it means that the equipment is in physical contact with the boundary, which may cause the equipment to jam or be damaged.

[0168] In some alternative embodiments, the preset threshold is set to 0mm-10mm. This solution is suitable for situations where the distance between the first inlet and the side of the equipment is small and the dirt accumulation in the dead corner area is relatively serious. It can make the equipment closer to the side wall and allow the negative pressure of the second inlet to act more concentratedly on the dead corner area.

[0169] In some alternative embodiments, the preset threshold is set to 10mm-20mm. This solution is suitable for situations where the distance between the first inlet and the side of the equipment is large, or where the flatness of the pool sidewall is poor. It can provide a certain buffer space for the equipment and avoid frequent collisions between the equipment and the sidewall.

[0170] In some alternative embodiments, the device can automatically calibrate a preset threshold based on the actual distance between its first inlet and the side. This solution can adapt to devices of different sizes and structures, ensuring that all models of devices can achieve optimal coverage of blind spots.

[0171] In some exemplary embodiments of this application, the edge cleaning method of the pool cleaning equipment includes: When the pool cleaning equipment detects that the distance between the main body of the equipment and the boundary of the current cleaning area is less than a preset threshold, it controls the second sewage inlet on the side of the main body of the equipment to open. The second sewage inlet is connected to the trash can. Under the operation of the negative pressure component, the second sewage inlet generates negative pressure, drawing in dirty water from the side and filtering it into the trash can.

[0172] This method first uses a detection component on the device to acquire real-time distance information between the device and the surrounding area boundary. When the detected distance between the device and the boundary is less than a preset threshold, the detection component sends a trigger signal to the control unit. Upon receiving the signal, the control unit issues a command to open the control valve of the second side inlet, connecting the second inlet to the trash can. At this time, the negative pressure generated by the operating negative pressure component within the filtration path acts on the second inlet, creating a suction field on the side. This suction field draws in dirty water from the side area, filters it through the trash can, and then discharges it. This method utilizes the existing system of the equipment to achieve edge cleaning, with a simple control process and high reliability.

[0173] In some alternative embodiments, when the distance between the device and the area boundary is detected to be less than a preset threshold, the device's walking speed is adjusted to move along the boundary at a slower pace. This approach extends the time the device spends in the edge area, improving cleaning effectiveness. In some alternative embodiments, the preset threshold can be manually set through the device's control interface. This allows users to personalize the process according to the actual conditions of the pool. In some alternative embodiments, after the device has continuously worked in edge cleaning mode for more than a preset time, it automatically exits edge cleaning mode and resumes regular cleaning. This approach prevents the device from staying in the same area for an extended period, improving overall cleaning efficiency.

[0174] In some exemplary embodiments of this application, the edge cleaning method of the pool cleaning equipment further includes: S30, activates the side cleaning mechanism on the same side of the pool cleaning equipment.

[0175] This method activates the side-mounted dirt inlet function while simultaneously starting the side-mounted cleaning mechanism on the same side, allowing both to operate synchronously. The side-mounted cleaning mechanism directly acts on the dirt through mechanical or water flow, peeling it off the contact surface. The second dirt inlet then draws the peeled dirt into the equipment for collection. This synchronous operation forms a complete cleaning process, improving the cleaning effect on edge areas.

[0176] In some alternative embodiments, the side cleaning mechanism is activated slightly earlier than the opening time of the second inlet. This approach allows for pre-treatment of the area, ensuring that dirt is suspended when the second inlet opens.

[0177] In some alternative embodiments, the workload of the side cleaning mechanism can be adjusted based on the distance between the equipment and the boundary. This approach allows for adjustment of cleaning intensity according to actual cleaning needs, thus saving energy.

[0178] In some alternative embodiments, the side cleaning mechanism is simultaneously shut down when the device exits the edge cleaning mode. This approach prevents the side cleaning mechanism from idling in non-edge cleaning mode, extending the device's lifespan.

[0179] In some alternative embodiments, controlling the activation of the side cleaning mechanism on the same side of the pool cleaning equipment further includes: S31 controls the start of the first pump body, generating pressure in the water pipeline.

[0180] S32, open the control valve in the water supply pipeline to make water spray out.

[0181] In some exemplary embodiments of this application, in the edge cleaning method of the pool cleaning equipment, when the side cleaning mechanism includes a water spraying mechanism, the method includes: S40 controls the water spraying mechanism to spray water onto the side of the equipment body to form a spraying area.

[0182] The spraying area should at least cover the boundary of the currently cleaned area.

[0183] This method involves controlling the spray direction of the water spray mechanism to point towards the boundary area on the side of the equipment when it is activated, ensuring that the sprayed area completely covers the junction of the pool wall and bottom. The sprayed water impacts the dirt in the boundary area with a certain pressure, breaking the adhesion between the dirt and the contact surface and suspending it in the water. Subsequently, the second inlet draws the suspended dirt into the equipment for filtration. The complete coverage of the boundary by the sprayed area avoids cleaning dead spots and ensures comprehensive cleaning of the edge area.

[0184] In some alternative embodiments, the size of the spray area can be controlled by adjusting the pressure of the water spray mechanism. This approach allows for adjustment of the spray range based on the width of the boundary area, improving cleaning efficiency.

[0185] In some alternative embodiments, the spray direction of the water spray mechanism can be automatically adjusted according to the shape of the boundary. This solution can adapt to pool boundaries of different shapes, ensuring that the spray area always covers the boundary.

[0186] In some alternative embodiments, the spraying time of the water spraying mechanism is automatically increased when a high level of dirt is detected in the boundary area. This solution can improve the cleaning effect on heavily soiled areas.

[0187] In a specific scenario, after the pool cleaning equipment is started, it first enters the normal pool bottom cleaning mode. The control valve is in the closed state, and the negative pressure component starts operating, creating negative pressure at the first inlet. Under the action of negative pressure, dirt from the pool bottom enters the equipment through the first inlet with the water flow. After being filtered by the trash can, the clean water is discharged from the outlet. Driven by the walking mechanism, the equipment moves along a preset path on the pool bottom, while the side detection device monitors the distance between the equipment and the surrounding area boundary in real time.

[0188] When the detector senses that the distance between the device and the pool sidewall is less than 30mm, it sends a trigger signal to the control unit. Upon receiving the signal, the control unit instructs to open the control valve, connecting the second waste inlet to the trash can. Simultaneously, the control unit activates the side spray mechanism and adjusts the device's travel speed to reduce its movement, allowing the device to slowly move along the pool sidewall.

[0189] The spray mechanism's flat nozzles emit a vertical, flat curtain of water that impacts the interface between the pool walls and bottom. The impact force of the water flow disrupts the adhesion between dirt and the pool walls and bottom, causing sediment, fallen leaves, and other contaminants to detach from the contact surface and suspend in the water. The subsequent second waste inlet, under the action of the negative pressure component, generates negative pressure, drawing the suspended dirt into the waste bin for filtration.

[0190] As the equipment approaches a corner of the pool, the sensor continuously monitors distance changes. The control unit automatically adjusts the equipment's direction based on the detected distance, allowing it to continue cleaning along the other side wall. Throughout the edge cleaning process, the sensor continuously monitors the distance between the equipment and the side wall. When the detected distance exceeds 100mm, the control unit issues a command to shut off the control valve and water spray mechanism, and the equipment resumes its normal pool bottom cleaning mode to complete the cleaning of the remaining area.

[0191] While this application has been described and illustrated in detail with reference to the accompanying drawings and the foregoing description, such description and illustration are intended to be illustrative or exemplary, not restrictive, and the application is not limited to the disclosed embodiments. Based on a study of the drawings, the disclosure, and the appended claims, those skilled in the art will understand and implement other embodiments and variations in carrying out the claimed invention. New embodiments can be obtained by combining any of the foregoing teachings.

[0192] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A swimming pool cleaning device, characterized in that, include: The equipment includes a main body, a trash can, a negative pressure component, and a first inlet and an outlet for water. The main body has at least one filtration passage. The trash can and the negative pressure component are both located in the filtration passage. The negative pressure component is configured to drive the water in the filtration passage to flow, so that the water enters from the first inlet, is filtered by the trash can, and is discharged from the outlet. The device body is provided with at least one second sewage inlet on its side. The second sewage inlet is connected to the filtration passage and is configured to generate negative pressure under the operation of the negative pressure component, so as to draw in dirty water from the side and filter it into the trash can.

2. The swimming pool cleaning equipment according to claim 1, characterized in that, A detection element is provided on the side of the main body of the device. The detection element is used to identify the distance between the main body of the device and the boundary of the current cleaning area. The second sewage inlet is configured to be activated when the distance between the main body of the device and the boundary of the current cleaning area is less than a preset threshold.

3. The swimming pool cleaning equipment according to claim 1 or 2, characterized in that, The side of the main body of the equipment is also provided with a side cleaning mechanism, which is located on the same side of the main body of the equipment as the second sewage inlet.

4. The swimming pool cleaning equipment according to claim 3, characterized in that, The side cleaning mechanism includes a water spraying mechanism, which is connected to the water outlet of the negative pressure component and / or the outside of the trash can via a water supply pipe.

5. The swimming pool cleaning equipment according to claim 4, characterized in that, The side cleaning mechanism includes a first pump body, which is disposed on the water supply pipe and is used to generate pressure to direct the water filtered by the trash can to the spray mechanism.

6. The swimming pool cleaning equipment according to claim 4, characterized in that, The water spraying mechanism includes at least one water spray nozzle, and in the forward direction of the pool cleaning equipment, at least one of the water spray nozzles is closer to the front end of the equipment body than the second sewage inlet.

7. The swimming pool cleaning equipment according to claim 6, characterized in that, The angle between the opening direction of the second sewage inlet and the forward direction of the main body of the equipment is 45°-135°, and the angle α between the spray direction of the water spray nozzle and the opening direction of the second sewage inlet satisfies -90°≤α≤90°.

8. The swimming pool cleaning equipment according to claim 6, characterized in that, The angle between the opening direction of the second sewage inlet and the forward direction of the main body of the equipment is 85°-95°, and the angle α between the spray direction of the water spray nozzle and the opening direction of the second sewage inlet satisfies 0≤α≤35°.

9. The swimming pool cleaning equipment according to claim 6, characterized in that, The water spray nozzle is a flat nozzle, and the nozzle opening is arranged vertically, with its spray direction at least partially downward at an angle to the bottom of the pool.

10. The swimming pool cleaning equipment according to claim 3, characterized in that, The side cleaning mechanism includes at least one roller brush, and at least one of the roller brushes is located in front of the second inlet along the forward direction of the device body.

11. The swimming pool cleaning equipment according to claim 1 or 2, characterized in that, A control valve is installed in the water supply channel between the second sewage inlet and the garbage bin.

12. A method for cleaning the edge of a swimming pool cleaning device, applied to the swimming pool cleaning device as described in any one of claims 1 to 11, characterized in that, include: When the pool cleaning equipment detects that the distance between the main body of the equipment and the boundary of the current cleaning area is less than a preset threshold, it controls the second sewage inlet on the side of the main body of the equipment to open. The second sewage inlet is connected to the trash can. Under the operation of the negative pressure component, the second sewage inlet generates negative pressure, drawing in dirty water from the side and filtering it into the trash can.

13. The edge cleaning method according to claim 12, characterized in that, The method further includes: The side cleaning mechanism on the same side of the pool cleaning equipment is activated.

14. The edge cleaning method according to claim 13, characterized in that, When the side cleaning mechanism includes a water spraying mechanism, the method includes: The water spraying mechanism is controlled to spray water onto the side of the equipment body to form a spraying area, which at least covers the boundary of the currently cleaned area.

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