A cleaning device for a surface immersed in a liquid

Abstract

The application provides a liquid-submerged surface cleaning device, comprising a device body, a wireless charging module arranged on the device body, the wireless charging module being used for charging a battery in the device body, and a buoyancy adjusting structure comprising an open-ended structure body, a partition device arranged in the structure body, and a power device used for driving the partition device to move, the partition device partitions an internal space of the structure body to form a closed space, the partition device moves relative to the structure body, and the buoyancy in water is adjusted through volume change of the closed space to make the device body float and dive. The application has the beneficial effect that the buoyancy of the liquid-submerged surface cleaning device is adjustable, the liquid-submerged surface cleaning device automatically floats to the water surface to be wirelessly charged when the liquid-submerged surface cleaning device needs to be charged, manual searching for the machine and taking the machine out of the water surface are not needed, manual labor is reduced, and searching time is shortened.

Description

Technical Field

[0001] This invention belongs to the field of underwater cleaning technology, and in particular relates to a cleaning device for surfaces submerged in liquid. Background Technology

[0002] In existing technologies, underwater cleaning equipment (such as pool cleaning equipment) is typically charged via wired power or solar power conversion units. If solar power is used, the equipment needs to surface and the sunlight intensity must be sufficient for energy conversion. If wired power is used, the cable can become tangled when the equipment is moving. Furthermore, when charging is needed, the underwater cleaning equipment stops working and rests on the pool bottom, requiring manual retrieval and removal, which is time-consuming and labor-intensive. Summary of the Invention

[0003] In view of the above problems, the present invention provides a cleaning device for a surface submerged in liquid to solve the above or other problems existing in the prior art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a cleaning device for a surface immersed in liquid, comprising,

[0005] Main body of the device;

[0006] A wireless charging module, disposed on the main body of the device, charges the battery inside the main body of the device; and...

[0007] An automatic buoyancy structure, through the movement of the automatic buoyancy structure, causes the main body of the device to rise or sink.

[0008] Furthermore, the automatic buoyancy structure is a buoyancy adjustment structure, which allows the cleaning device submerged on the liquid surface to rise or sink by adjusting the buoyancy.

[0009] Furthermore, the automatically snorkeling structure is constructed as follows:

[0010] When the pump is not working, the cleaning device with its surface submerged in the liquid is submerged in the liquid and the buoyancy it experiences is greater than the gravity, causing it to float up until it is partially exposed above the liquid surface.

[0011] When the pump operates, the cleaning device, which is submerged in liquid, is pressed against the submerged surface by the pressure of the liquid generated by the pump.

[0012] Furthermore, the automatically snorkeling structure is constructed as follows:

[0013] The pump operates at the first pump pressure. When the cleaning device with the surface submerged in the liquid is submerged in the liquid, the buoyancy it experiences is greater than the gravity, and it floats up to the point where it is partially exposed above the liquid surface.

[0014] The pump operates at a second pump pressure greater than the first pump pressure, and the cleaning device for the submerged surface in the liquid is pressed against the submerged surface by means of the pressure of the liquid generated by the pump operating at the second pump pressure.

[0015] Furthermore, cleaning devices that immerse surfaces in liquids are used for pool cleaning, with charging stations located on the pool shore.

[0016] Furthermore, in the vertical direction, the charging station is located at any of the following positions on the pool wall:

[0017] Between the pool bottom and the pool surface;

[0018] Near the surface of the pool; and

[0019] Above the surface of the swimming pool.

[0020] Furthermore, the charging station floats on the surface of the pool.

[0021] Furthermore, the buoyancy adjustment structure includes a main body with one open end, a partition device located inside the main body, and a power device for driving the partition device to move. The partition device divides the internal space of the main body to create a closed space. The partition device moves relative to the main body, and the buoyancy in the water is adjusted by the change in the volume of the closed space so that the main body of the device can float up and submerge.

[0022] Furthermore, the wireless charging module includes a receiver that is connected to the battery within the main body of the device.

[0023] Furthermore, it also includes a position detection module, which is connected to the controller inside the main body of the device. The position detection module detects the position of the wireless charging transmitter, and the controller controls the main body of the device to move.

[0024] Furthermore, it also includes a power detection module, which is connected to both the controller and the battery within the main body of the device. The module detects the remaining battery power and sends the remaining power to the controller, which is configured as follows:

[0025] Based on the received remaining battery power,

[0026] A buoyancy command is sent to the power unit, which then drives the partition device to move, thereby increasing the enclosed space and causing the main body of the device to float.

[0027] A diving command is sent to the power unit, which then drives the partition device to move, thereby reducing the size of the enclosed space and allowing the main body of the device to descend.

[0028] Furthermore, it also includes a wireless control terminal and a wireless communication module. The controller of the main body of the device communicates with the wireless control terminal through the wireless communication module.

[0029] The wireless control terminal is configured as follows:

[0030] Receive remaining battery power from the controller and output a user-friendly remaining battery power indicator; and

[0031] Based on user input, manual ascent and manual descent commands are sent to the controller via the wireless communication module.

[0032] The controller is also configured as follows:

[0033] Based on the received manual ascent command, an ascent command is sent to the power unit; and

[0034] The power unit is instructed to descend based on the received manual descent command.

[0035] Furthermore, the controller is configured as follows:

[0036] If the percentage of remaining charge is ≥ M%, the cleaning device submerged in the liquid will descend;

[0037] If the percentage of remaining charge is ≤ N%, and M > N, the cleaning device submerged in the liquid will float.

[0038] Furthermore, the separation device includes a separation element and a sealing element disposed on the outer periphery of the separation element. The separation element is in contact with the inner wall of the main structure, and the sealing element seals the contact area between the separation element and the main structure.

[0039] Furthermore, the power unit includes a power component and a power transmission component connected to the power component. The power component drives the power transmission component to move, thereby driving the separation device to move.

[0040] Furthermore, the power transmission assembly includes a rotating component, a movable component disposed on the rotating component and movable relative to the rotating component, and a telescopic component connected to the movable component. One end of the telescopic component is connected to the separating device. The rotating component drives the movable component to move, causing the telescopic component to extend or shorten, thereby driving the separating device to move.

[0041] Furthermore, the telescopic component is a four-bar linkage, and the rotating component is a lead screw.

[0042] Furthermore, the power assembly includes a power component and a transmission component connected to the power component. The transmission component is connected to the rotating component and drives the rotating component to rotate.

[0043] Furthermore, the telescopic component is equipped with a guide component, and a corresponding groove is provided on the inner wall of the main structure. The guide component is inserted into the groove and slides along the groove.

[0044] Furthermore, the power transmission assembly includes a first rotating member, a second rotating member, and a flexible member respectively wound around the first rotating member and the second rotating member. The first rotating member is rotatably connected to the separating device, the second rotating member is rotatably connected to the main structure, one end of the flexible member is connected to the main structure, and the other end is connected to the power assembly. The power assembly drives the flexible member to move, and the first rotating member and the second rotating member rotate, driving the separating device to move.

[0045] Furthermore, the power transmission assembly includes a third rotating component that is rotatably connected to the main structure. One end of the third rotating component is rotatably connected to the partition device, and the other end is connected to the power assembly. When the third rotating component rotates, it drives the partition device to move.

[0046] Furthermore, the main body of the structure is a cylindrical structure that is closed at one end and open at the other end. The open end of the main body of the structure is provided with an end cap, and the end cap is provided with a water outlet.

[0047] Furthermore, a sealed space is formed between the separating device and the closed end of the main structure, or a spacer is provided inside the main structure, and a sealed space is formed between the separating device and the spacer.

[0048] Furthermore, the power assembly is located outside the main structure, or the power assembly is located within the space formed between the spacer and the closed end of the main structure.

[0049] By adopting the above technical solution, the cleaning device for submerged surfaces in liquids has an automatic floating structure. This automatic floating structure can be a buoyancy adjustment structure. This buoyancy adjustment structure constructs a sealed space within the main body of the structure. By changing the volume of the sealed space, the buoyancy of the buoyancy adjustment structure is controlled, making the buoyancy of the buoyancy adjustment structure adjustable. It can float or submerge in water. This buoyancy adjustment structure is installed inside the cleaning drum of the cleaning device for submerged surfaces in liquids, making the buoyancy of the cleaning device for submerged surfaces in liquids adjustable. This allows the cleaning device for submerged surfaces in liquids to automatically float to the surface when it needs charging, or when the filter box needs cleaning or machine maintenance. It eliminates the need for manual searching for the machine or lifting it out of the water, reducing manual labor, shortening search time, and improving work efficiency. The installation utilizes the internal space of the cleaning drum, eliminating the need to modify the overall structure of the cleaning device for submerged surfaces in liquids.

[0050] The automatic floating structure can also be based on the fact that the density of the cleaning device's material is less than the density of the liquid, and that the buoyancy is greater than the gravity when the pump is not working and the buoyancy is less than the sum of gravity and pressure when the pump is working, to control the automatic floating or submerging of the cleaning device; or, based on the fact that the density of the cleaning device's material is less than the density of the liquid, the working pump pressure is controlled, thereby controlling the relationship between buoyancy and the sum of gravity and pressure, so as to realize the automatic floating or submerging of the cleaning device without the need for manual searching for the machine or lifting the machine out of the water, thus reducing manual labor;

[0051] The cleaning device for immersion in liquid has a wireless charging module, which enables the cleaning device for immersion in liquid to be wirelessly charged without the need for cables. It can be wirelessly charged whenever it is needed, without being restricted by the environment.

[0052] It has a power detection module that can monitor the remaining power of the battery in the main body of the device and transmit the remaining power information to the controller. The controller controls the buoyancy adjustment structure to operate according to the remaining power information. Alternatively, the controller transmits the remaining power information of the battery to the wireless control terminal via the wireless communication module. The user inputs the buoyancy command or the submersion command to control the cleaning device on the surface of the liquid to rise or submerge, so as to realize the automatic buoyancy and submersion of the cleaning device on the surface of the liquid when it needs to be charged.

[0053] Equipped with a position detection module, when the cleaning device submerged in liquid rises to the surface, it detects the position of the wireless charging transmitter and transmits this position information to the controller. The controller then controls the cleaning device to move closer to the wireless charging transmitter so that the receiver of the wireless charging module corresponds to the transmitter for wireless charging. This enables the cleaning device to automatically locate the wireless charging transmitter. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the first structure of the buoyancy adjustment structure according to an embodiment of the present invention;

[0055] Figure 2 This is a schematic diagram of the transmission component in the first structure of the buoyancy adjustment structure according to an embodiment of the present invention;

[0056] Figure 3 This is a schematic diagram of the first structure of the buoyancy adjustment structure according to an embodiment of the present invention (the end cap, the first gear, and the second gear are not shown).

[0057] Figure 4 This is a schematic diagram of the end cap in the first structure of the buoyancy adjustment structure according to an embodiment of the present invention;

[0058] Figure 5This is a schematic diagram of a second structure of the buoyancy adjustment structure according to an embodiment of the present invention;

[0059] Figure 6 This is a schematic diagram of a third structure of the buoyancy adjustment structure according to an embodiment of the present invention;

[0060] Figure 7 This is a schematic diagram of the structure of a cleaning device for a surface immersed in liquid according to an embodiment of the present invention;

[0061] Figure 8 This is a control block diagram of an embodiment of the present invention.

[0062] In the picture:

[0063] 1. Main structure; 2. Separation device; 3. Power transmission components

[0064] 4. Power components; 5. Transmission components; 6. End caps

[0065] 20. Separator; 21. Seal; 30. Telescopic component

[0066] 31. Rotating component; 32. Moving component; 50. Second gear

[0067] 51. Housing; 52. First gear; 100. Slide groove

[0068] 300, guide component 60, water outlet 7, first rotating component

[0069] 8. Second rotating component; 9. Flexible component; 10. Spacer component

[0070] 11. Fixed base; 12. Third rotating component 200; Connecting part

[0071] 13. Cleaning roller; 14. Main body of the device; 15. Buoyancy adjustment structure

[0072] 16. Controller; 17. Wireless communication module; 18. Wireless control terminal

[0073] 19. Battery level detection module; 20. Location detection module Detailed Implementation

[0074] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0075] Figure 1The diagram shows a structural schematic of an embodiment of the present invention. This embodiment relates to a cleaning device for submerged surfaces in liquids, used for cleaning pools, swimming pools, etc. The cleaning device for submerged surfaces in liquids has a wireless charging module for wireless charging. The cleaning device for submerged surfaces in liquids has a buoyancy adjustment structure, which enables the cleaning device to automatically float and submerge. When charging is required, the cleaning device for submerged surfaces in liquids automatically floats up and moves out of the water to the wireless charging transmitter for wireless charging. There is no need for manual searching. The cleaning device for submerged surfaces in liquids can automatically float up to find the wireless charging transmitter and automatically submerge, improving work efficiency.

[0076] A cleaning device for surfaces submerged in liquid, comprising:

[0077] Device body 14;

[0078] A wireless charging module is disposed on the main body 14 of the device, and the wireless charging module charges the battery inside the main body 14 of the device; and

[0079] An automatic buoyancy structure, through the action of the automatic buoyancy structure, causes the main body of the device 23 to rise or sink.

[0080] The aforementioned automatic buoyancy adjustment structure is a buoyancy adjustment structure 15, which adjusts the buoyancy to make the cleaning device submerged on the surface of the liquid float or submerge.

[0081] Alternatively, the above-mentioned automatic buoyancy structure can be constructed as follows: when the pump is not working, the cleaning device on the submerged surface in the liquid is submerged in the liquid and the buoyancy it experiences is greater than the gravity, causing it to float up to partially protrude from the liquid surface; when the pump is working, the cleaning device on the submerged surface in the liquid is pressed against the submerged surface by the pressure of the liquid generated by the pump. The cleaning device, which is submerged in the liquid, has a pump to draw out the wastewater generated during cleaning. The wastewater enters the internal filter of the cleaning device, is filtered, and then discharged from the outlet. The discharged filtered water exerts a certain pressure on the cleaning device. In some feasible embodiments, the density of the materials of the various components of the cleaning device is less than the density of the liquid. When the pump is not working, no pressure is applied to the cleaning device. The buoyancy of the cleaning device on the submerged surface in the liquid is greater than its own weight. The unbalanced forces cause the cleaning device to automatically float until it is partially exposed above the liquid surface. At this point, the forces are balanced, and the cleaning device floats on the liquid surface for wireless charging. After charging is complete, the pump starts working, and the cleaning device is subjected to the pressure of the filtered liquid discharged from the outlet. The pump's operating pressure can be controlled according to calculations to ensure that the sum of the pressure and the weight is greater than the buoyancy. The cleaning device then submerges to the submerged surface to perform the cleaning operation.

[0082] Alternatively, the aforementioned automatic buoyancy structure can be configured as follows: the pump operates at a first pump pressure, and the cleaning device, submerged in the liquid, experiences buoyancy greater than its weight and floats to partially above the liquid surface; the pump operates at a second pump pressure greater than the first pump pressure, and the cleaning device is pressed against the submerged surface by the pressure of the liquid generated by the second pump pressure. In some feasible embodiments, the density of the materials of the various components of the cleaning device is less than the density of the liquid. Calculations can be used to control the pump to operate at the first pump pressure, applying a first pressure to the cleaning device, such that the buoyancy experienced by the cleaning device on the submerged surface in the liquid is greater than the sum of its weight and the first pressure. The unbalanced forces cause the cleaning device to automatically float until it partially emerges from the liquid surface. At this point, the cleaning device is in equilibrium, floating on the liquid surface for wireless charging; after charging is complete, the pump operates again, and calculations can be used to control the pump to operate at the second pump pressure, applying a second pressure to the cleaning device, such that the sum of the second pressure and its weight is greater than the buoyancy, causing the cleaning device to submerge to the submerged surface to perform cleaning operations.

[0083] The cleaning device that is submerged in the liquid can be used for pool cleaning, and the charging station can be located on the pool shore;

[0084] Alternatively, the charging station can be installed on the pool wall, located in any of the following positions on the pool wall in the vertical direction:

[0085] The charging station can be installed anywhere on the pool wall between the bottom of the pool and the surface of the pool water.

[0086] Near the pool surface, that is, the charging station can be installed on the pool wall close to the water surface. For example, when the pool surface is calm, the charging station can be installed on the pool wall within a range of 5-10cm above and 5-10cm below the water surface; and

[0087] The charging station is installed on the pool wall above the water surface.

[0088] Alternatively, the charging station can float on the surface of the swimming pool.

[0089] like Figures 1-6As shown, the aforementioned buoyancy adjustment structure 15 includes a main body 1 with one open end, a partition device 2 disposed within the main body 1, and a power device for driving the partition device 2 to move. The partition device 2 divides the internal space of the main body 1, creating a sealed space. The partition device 2 moves relative to the main body 1, adjusting the buoyancy in the water by changing the volume of the sealed space, so that the device body 14 floats and submerges, allowing the cleaning device submerged in the liquid to automatically float and submerge without manual searching. Specifically, the partition device 2 is arranged along the radial direction of the main body 1, dividing the internal space of the main body 1, and the partition device 2 contacts and cooperates with the inner wall of the main body 1. One side of the partition device 2 is designed as a sealed space. The partition device 2 moves along the axial direction of the main body 1, controlling the volume change of the sealed space, thereby controlling the buoyancy of the buoyancy adjustment structure 15 in the water, allowing it to float or submerge.

[0090] The aforementioned main structure 1 is a cylindrical structure with one end closed and the other end open. The open end of the main structure 1 is provided with an end cap 6. The main structure 1 has an internal space to facilitate the installation of the partition device 2 and the power device. The cross-sectional shape of the main structure 1 can be circular, square, elliptical, or other shapes, depending on the actual needs. No specific requirements are specified here.

[0091] To facilitate the installation of the power unit, a spacer 10 is provided inside the main body 1. The spacer 10 is arranged along the radial direction of the main body 1. Whether or not the spacer 10 is provided depends on the structure of the power unit and the entire buoyancy adjustment structure 15.

[0092] The partition device 2 can divide the internal accommodating space of the main body 1 into at least two spaces. The partition device 2 and the closed end of the main body 1 form a closed space, or the partition device 2 and the spacer 10 form a closed space. The closed space is selected and set according to the structure and installation method of the power device.

[0093] Specifically, the shape of the aforementioned partition device 2 is adapted to the shape of the internal space of the main body 1. Under the action of the power device, the partition device 2 can move along the axial direction of the main body 1. During the movement, the partition device 2 is always in contact with the inner wall of the main body 1 with a clearance fit, so that the sealed space on one side of the partition device 2 remains sealed during the movement of the partition device 2. When the buoyancy adjustment structure 15 is in the water, water cannot enter the sealed space, so as to ensure that the volume of the sealed space is changed by the movement of the partition device 2, and the contents in the sealed space are compressed or expanded.

[0094] The partition device 2 moves linearly along the axial direction of the main body 1. In this embodiment, preferably, the partition device 2 moves in a reciprocating linear motion to change the volume of the enclosed space.

[0095] In this embodiment, preferably, the cross-sectional shape of the main body 1 is circular, and correspondingly, the cross-sectional shape of the dividing device 2 is also circular. The dividing device 2 has a certain thickness, which is selected according to actual needs and is not specifically required here.

[0096] like Figures 1-4 As shown, the aforementioned separating device 2 includes a separating element 20 and a sealing element 21 disposed on the outer periphery of the separating element 20. The separating element 20 is in contact with the inner wall of the structural body 1, and the sealing element 21 seals the contact point between the separating element 20 and the structural body 1. The shape of the separating element 20 is adapted to the cross-sectional shape of the structural body 1. The separating element 20 remains in contact with the inner wall of the structural body 1 during movement. The separating element 20 and the structural body 1 are fitted with a clearance fit, and the sealing element 21 is disposed on the outer periphery of the separating element 20 to further seal the contact point between the separating element 20 and the inner wall of the structural body 1. The number of sealing elements 21 is at least one, and the number of sealing elements 21 is selected according to actual needs, without specific requirements here. The sealing element 21 is made of an elastic material, and a groove is provided on the outer peripheral side of the separating element 20. The sealing element 21 is fitted onto the outer surface of the separating element 20, located in the groove, and protrudes from the groove. Preferably, in this embodiment, the sealing element 21 is a sealing ring, preferably a Y-type sealing ring.

[0097] The aforementioned power unit includes a power component and a power transmission component 3 connected to the power component. The power component drives the power transmission component 3 to move, thereby driving the separating device 2 to perform linear motion. The power component outputs power, and the power transmission component 3 transmits the power. The power transmission component 3 can be any structure that enables the separating device 2 to perform linear reciprocating motion, and can be selected and set according to actual needs.

[0098] The power assembly is located outside the main body 1, or it is located in the space formed between the spacer 10 and the closed end of the main body 1. The power assembly and the entire buoyancy adjustment structure 15 are selected and set according to their actual structure.

[0099] One structure of the power transmission component 3 is as follows: Figure 1As shown, the power transmission assembly 3 includes a rotating member 31, a movable member 32 disposed on the rotating member 31 and movable relative to the rotating member 31, and a telescopic member 30 connected to the movable member 32. One end of the telescopic member 30 is connected to the separating device 2. The rotating member 31 drives the movable member 32 to move, thereby causing the telescopic member 30 to extend or shorten, and thus causing the separating device 2 to move. The power transmission component 3 is located inside the main body 1 and in the space between the partition device 2 and the open end of the main body 1. The open end of the main body 1 is fastened with an end cover 6, which has a through hole. One end of the rotating component 31 passes through the through hole on the end cover 6 and is connected to the power component. The rotating component 31 can rotate relative to the end cover 6. The rotating component 31 is mounted on the end cover 6 by a shaft retaining ring, so that the rotating component 31 can rotate relative to the end cover 6 without axial movement. The moving component 32 is disposed on the rotating component 31 and can reciprocate linearly along the length direction of the rotating component 31, thereby driving the telescopic component 30 to reciprocate linearly. The telescopic component 30 is compressed or stretched. The moving component 32 and the rotating component 31 are connected by a thread. The linear movement of the moving component 32 is achieved by the rotation of the rotating component 31. In this embodiment, the rotating component 31 is preferably a lead screw, and the moving component 32 is a lead screw nut.

[0100] One end of the telescopic member 30 is hinged to the end face of the separator 20 facing the rotating member 31, and the other end is hinged to the moving member 32. Alternatively, the other end of the telescopic member 30 is hinged to the end cover 6. In this case, a position between the two ends of the telescopic member 30 is hinged to the moving member 32. By moving the moving member 32, the telescopic member 30 is compressed or stretched, thereby moving the separator 20. In this embodiment, preferably, the telescopic member 30 is a four-bar linkage structure, consisting of multiple hinged links. The extension and compression of the entire four-bar linkage structure are achieved by the swinging of the two links connected to the moving member 32.

[0101] The number of telescopic components 30 is at least one. When the number of telescopic components 30 is multiple, the multiple telescopic components 30 are arranged along the circumferential direction of the rotating component 31 and are all connected to the moving component 32, so that the multiple telescopic components 30 move simultaneously. Preferably, in this embodiment, the number of telescopic components 30 is two, and the two telescopic components 30 are arranged on both sides of the rotating component 31.

[0102] To prevent the telescopic component 30 from rotating, a guide component 300 is provided on the telescopic component 30. A corresponding groove 100 is provided on the inner wall of the main body 1. The guide component 300 is inserted into the groove 100 and slides along the groove 100 to ensure that the telescopic component 30 moves in a straight line. The guide component 300 is a columnar structure and is located on the side of the telescopic component 30 facing the inner wall of the main body 1. The groove 100 is provided along the length of the main body 1 and is fixedly connected to the inner wall of the main body 1. This fixed connection is preferably integrally formed. One end of the guide component 300 is fixedly connected to the telescopic component 30, and the other end is inserted into the groove 100 and slides along the groove 100 to guide the movement of the guide component 300.

[0103] The power assembly includes a power component 4 and a transmission component 5 connected to the power component 4. The transmission component 5 is connected to a rotating component 31 and drives the rotating component 31 to rotate. The power component 4 is preferably a motor, and the transmission component 5 is preferably a reducer. The reducer includes a housing 51 and a first gear 52 and a second gear 50 rotatably disposed within the housing 51. The first gear 52 meshes with the second gear 50. The first gear 52 is connected to the motor, and the second gear 50 is connected to the rotating component 31. When the motor rotates, it drives the first gear 52 to rotate, which in turn drives the second gear 50 to rotate, thereby causing the rotating component 31 to rotate. The motor is fixedly connected to the housing 51, and the housing 51 is connected to an end cover 6, so that the motor and reducer are mounted on the end cover 6 and rotate with the rotation of the main structure 1.

[0104] The end cap 6 is provided with a water outlet 60 for easy drainage.

[0105] When power is transmitted under the structure of this power transmission component 3, the motor rotates, and the torque is transmitted to the rotating component 31 through the first gear 52 and the second gear 50. The rotating component 31 rotates, driving the moving component 32 to move along the length direction of the rotating component 31. The movement of the moving component 32 causes the telescopic component 30 to be stretched, pulling the partition device 2 towards the end cover 6. The volume of the sealed space increases. Through the movement of the partition device 2, the water in the space between the partition device 2 and the end cover 6 is discharged from the water outlet 60 on the end cover 6, and buoyancy is reduced. The weight of the adjustment structure 15 is reduced, resulting in an imbalance of forces. The buoyancy of the buoyancy adjustment structure 15 in the water increases, and the buoyancy adjustment structure 15 automatically floats to the surface under the action of buoyancy, thus achieving upward movement. When the buoyancy adjustment structure 15 submerges, the motor rotates in the opposite direction. Through the transmission between the first gear 52 and the second gear 50, the rotating part 31 rotates in the opposite direction, which in turn causes the moving part 32 to move in the opposite direction. The telescopic part 30 is compressed, which pushes the partition device 2 to move. The volume of the sealed space decreases, the buoyancy of the buoyancy adjustment structure 15 in the water decreases, and it submerges.

[0106] Another structure for the power transmission component 3 is as follows: Figure 5As shown, the power transmission assembly 3 includes a first rotating member 7, a second rotating member 8, and a flexible member 9 respectively wound around the first rotating member 7 and the second rotating member 8. The first rotating member 7 is rotatably connected to the separating device 2, and the second rotating member 8 is rotatably connected to the end cover 6 of the main body 1. One end of the flexible member 9 is connected to the end cover 6 of the main body 1, and the other end is connected to the power assembly. The power assembly drives the flexible member 9 to move, and the first rotating member 7 and the second rotating member 8 rotate, driving the separating device 2 to move and perform reciprocating linear movement. In this embodiment, the power transmission assembly 3 is located inside the main body 1 and in the space between the partition device 2 and the end cover 6. The first rotating member 7 is rotatably mounted on the end face of the partition 20 facing the end cover 6 via a rotating shaft. The second rotating member 8 is rotatably mounted on the end face of the end cover 6 facing the internal space of the main body 1 via a rotating shaft. At the same time, a fixing member is fixedly installed on the end face of the end cover 6. One end of the flexible member 9 is fixedly connected to the fixing member. The other end of the flexible member 9 passes through the first rotating member 7 and the second rotating member 8 in sequence and extends to the outside of the end cover 6, and is wrapped around the first rotating member 7 and the second rotating member 8. The other end of the flexible member 9 is connected to the power assembly, and the power assembly is fixedly connected to the end cover 6.

[0107] In this embodiment, the first rotating member 7 and the second rotating member 8 are preferably pulleys, and the flexible member 9 is a rope, chain, or steel cable, etc. The first rotating member 7, the second rotating member 8, and the flexible member 9 constitute a pulley group structure.

[0108] In this embodiment, the power assembly may consist of only the power component 4, which is preferably a motor. The motor shaft rotates, and one end of the flexible component 9 is wound around the motor shaft (a connector for winding the flexible component 9 may also be provided on the motor shaft). A pulling force is applied to the flexible component 9, which pulls the separating device 2 to move.

[0109] In the initial state, the separating device 2 is located at the closed end of the main structure 1. When the buoyancy adjustment structure 15 needs to float, the motor rotates, and the flexible member 9 is wound around the motor output shaft, applying a pulling force to the flexible member 9. The first rotating member 7 and the second rotating member 8 rotate, pulling the separating device 2 towards the end cover 6. The volume of the sealed space increases. Through the movement of the separating device 2, the water in the space between the separating device 2 and the end cover 6 is discharged from the water outlet 60 on the end cover 6. The weight of the buoyancy adjustment structure 15 is reduced, and the buoyancy of the buoyancy adjustment structure 15 in the water increases. The buoyancy adjustment structure 15 automatically floats to the surface under the action of buoyancy. The motor has a braking function and can stop at any position. The buoyancy adjustment structure 15 is lifted out of the pool. When the buoyancy adjustment structure 15 needs to submerge, the motor reverses, the flexible part 9 relaxes, and the partition device 2 automatically moves in the opposite direction (closed end of the main body 1) under negative pressure inside the sealed space. The volume of the sealed space decreases, water enters the space between the partition device 2 and the end cap 6, and water also enters the interior of the buoyancy adjustment structure 15. The buoyancy of the buoyancy adjustment structure 15 decreases, and the buoyancy adjustment structure 15 submerges.

[0110] The third structure of the power transmission assembly 3 is as follows: Figure 6 As shown, the power transmission assembly 3 includes a third rotating member 12 rotatably connected to the main body 1. One end of the third rotating member 12 is rotatably connected to the partition device 2, and the other end is connected to the power assembly. Rotation of the third rotating member 12 drives the partition device 2 to move. In this embodiment, a spacer 10 is provided inside the main body 1. The spacer 10 is a plate-shaped structure and is fixedly connected to the inner wall of the main body 1. The spacer 10 and the closed end of the main body 1 form an installation space, so that the power assembly can be installed in the installation space. The power transmission assembly 3 is installed in the space on the other side of the spacer 10, so that the power transmission assembly 3 can also be installed inside the main body 1.

[0111] In this embodiment, the separator 20 has a connecting portion 200 protruding from its end face facing the spacer 10. The spacer 10 has a through hole, and one end of the third rotating member 12 passes through the through hole and is connected to the power assembly. A fixing seat 11 is fixedly installed on the side face of the spacer 10 facing the closed end of the main structure 1. This end of the third rotating member 12 is rotatably connected to the fixing seat 11 via a bearing. The other end of the third rotating member 12 is connected to the connecting portion 200 of the separator 20, and the third rotating member 12 can rotate relative to the spacer 10. Through the rotation of the third rotating member 12, the separator 20 moves linearly along the axis of the main structure 1. The third rotating member 12 is preferably a lead screw, and the connecting portion 200 has a threaded hole. The third rotating member 12 and the connecting portion 200 are connected by a thread.

[0112] The space between the separator 20 and the spacer 10 is a closed space. By reciprocating linearly moving the separator 20, the volume of the closed space changes, thereby changing the buoyancy of the buoyancy adjustment structure 15.

[0113] In this embodiment, the power assembly may consist only of the power component 4, which is a motor, and the output shaft of the motor is connected to the third rotating component 12 via a coupling.

[0114] In this embodiment, when the buoyancy adjustment structure 15 needs to float, the motor rotates, driving the third rotating component 12 to rotate, causing the separating device 2 to move along the axis of the main body 1. The separating device 2 moves towards the end cap 6 of the main body 1, discharging the water in the space between the separating device 2 and the end cap 6 from the water outlet 60 on the end cap 6. The weight of the buoyancy adjustment structure 15 is reduced, and the buoyancy of the buoyancy adjustment structure 15 in the water increases. Under the action of buoyancy, the buoyancy adjustment structure 15 automatically floats to the surface. When the buoyancy adjustment structure 15 needs to submerge, the motor rotates in the opposite direction, driving the third rotating component 12 to rotate in the opposite direction, causing the separating device 2 to move towards the spacer 10. The volume of the sealed space decreases, the buoyancy of the buoyancy adjustment structure 15 in the water decreases, and the buoyancy adjustment structure 15 submerges.

[0115] The buoyancy adjustment structure 15 is installed in the space inside the cleaning roller 13 of the cleaning device that is submerged in the liquid. At this time, the cleaning roller 13 can replace the main structure 1, or the main structure 1 can be retained, depending on the actual needs. By changing the volume of the sealed space, the contents in the sealed space are compressed or expanded, changing the gravity of the cleaning device that is submerged in the liquid, thereby changing the buoyancy of the cleaning device that is submerged in the liquid in the water, so that the cleaning device that is submerged in the liquid can automatically float to the surface of the water after it stops working.

[0116] The buoyancy adjustment structure 15 can be located in any of the cleaning rollers 13 of the cleaning device that is submerged in the liquid, or the buoyancy adjustment structure 15 can be located in all the cleaning rollers 13 of the cleaning device that is submerged in the liquid, or the buoyancy adjustment structure 15 can be located in two corresponding front and rear cleaning rollers 13 of the cleaning device that is submerged in the liquid, or other settings, which can be selected according to actual needs. No specific requirements are made here.

[0117] The cleaning roller 13 described above is a cylindrical structure with one end closed and the other end open. The open end of the cleaning roller 13 is provided with a cleaning end cap (this cleaning end cap can replace the end cap 6 on the main body 1 of the structure, and the main body 1 with the end cap 6 fastened can be a cleaning roller 13 with the cleaning end cap fastened). The cleaning end cap is also provided with a water outlet hole. The outer surface of the cleaning roller 13 is provided with multiple brush blades. By rotating the cleaning roller 13, the multiple brush blades scrub the bottom and walls of the pool. The cleaning roller 13 has a receiving space inside, and the buoyancy adjustment structure 15 can be installed in the receiving space.

[0118] In a further optimized design, the cleaning device for the surface submerged in the liquid also includes a controller 16. The controller 16 is electrically connected to the buoyancy adjustment structure 15 and controls the operation of the buoyancy adjustment structure 15. The controller 16 is installed in the sealed box of the cleaning device for the surface submerged in the liquid and is electrically connected to the power component of the buoyancy adjustment structure 15 to control the operation of the power component, thereby controlling the operation of the separation device 2.

[0119] In the above description, the connection between the power unit and the separating device 2 is a mechanical connection, which is made through the power transmission component 3. The structure of the power transmission component 3 can also be a crank-slider structure or a worm gear structure, or a combination of several structures, or other structures that can drive the separating device 2 to make linear motion, converting the rotation of the power unit into linear motion to drive the separating device 2 to reciprocate linear motion.

[0120] Furthermore, the connection between the power unit and the partition device 2 can also be non-mechanical. This could involve using magnetic force to control the movement of the partition device 2. For example, an electromagnet can be installed at one end of the main structure 1, and a permanent magnet can be installed on the partition device 2, or the entire partition 20 can be a permanent magnet. By changing the magnetic poles of the electromagnet, the partition device 2 can move closer to or further away from the electromagnet, thus achieving reciprocating linear motion along the axis of the main structure 1. This changes the volume of the enclosed space, allowing the buoyancy adjustment structure 15 (a cleaning device for the surface submerged in liquid) to rise and fall. Alternatively, the partition device 2 can be driven by the thermal expansion of gas. For instance, a heating resistance wire can be installed in the enclosed space between the partition device 2 and the closed end of the main structure 1. The heating resistance wire heats the air, causing it to expand. The expansion of the partition device 2 causes it to move, the air to cool, the pressure in the sealed space to decrease, and the partition device 2 to move in the opposite direction. Alternatively, water, other liquids, or solids can be filled into the sealed space and heated to vaporize or sublime, thereby driving the partition device 2 to move. This allows the partition device 2 to reciprocate linearly along the axis of the main structure 1, changing the volume of the sealed space and enabling the buoyancy adjustment structure 15 (a cleaning device for surfaces submerged in liquid) to float. When submersion is required, the heating of the resistance wire is stopped, and the gas in the sealed space is cooled by the water in the pool, causing it to liquefy or condense. The pressure in the sealed space decreases, and the partition device 2 moves back to its original position, enabling the buoyancy adjustment structure 15 (a cleaning device for surfaces submerged in liquid) to submerge. Other methods can also be used, depending on actual needs. No specific requirements are specified here.

[0121] like Figure 7 As shown, the cleaning device for the surface submerged in the liquid has a mounting housing with an inlet and an outlet. The housing contains a filter module to filter the sewage, and the filtered water is discharged from the outlet. It also has a drive module and a walking module. The controller 16 controls the drive module to move and drives the walking module to move. These are all existing structures and will not be described in detail here.

[0122] like Figure 8 As shown, the wireless charging module includes a receiver end, which is connected to the battery inside the main body 14 of the device. The receiver end is a receiving coil, which is connected to the battery through a control circuit. The control circuit includes a rectifier circuit, a filter circuit, etc., which is the existing circuit structure of a wireless charging receiver end. The selection is made according to actual needs, and no specific requirements are made here.

[0123] The wireless charging transmitter is connected to a power source and can float on the water surface or be installed on the poolside. When a cleaning device that is submerged in liquid needs to be charged, it can float to the water surface, locate the wireless charging transmitter, and approach it until the wireless charging receiver corresponds to the transmitter to transfer energy and charge the battery inside the main body 14 of the device.

[0124] In some feasible embodiments, to enable the cleaning device immersed in the liquid to quickly locate the wireless charging transmitter, the cleaning device further includes a position detection module 20. The position detection module 20 is connected to a controller 16 within the device body 14. The position detection module 20 detects the position of the wireless charging transmitter, and the controller 16 controls the device body 14 to move, causing the cleaning device immersed in the liquid to approach the wireless charging transmitter. The position detection module 20 can be one or more of an infrared sensor, a visual sensor, an ultrasonic sensor, and a radar sensor.

[0125] In some feasible embodiments, the cleaning device for the submerged surface in the liquid further includes a power detection module 19, which is connected to both the controller 16 and the battery within the device body 14. The power detection module 19 detects the remaining battery power and sends the remaining power to the controller 16. In this case, the controller 16 is configured as follows:

[0126] The power detection module 19 monitors the battery power and transmits the monitoring results to the controller 16. The controller 16 then determines the remaining power based on the received data.

[0127] A buoyancy command is sent to the power unit, which then drives the partition device 2 to move, thereby increasing the enclosed space and causing the main body 14 of the device to float.

[0128] A diving command is sent to the power unit, which drives the partition device 2 to move, thereby reducing the size of the enclosed space and causing the main body of the device 14 to dive.

[0129] The power detection module 19 is an electronic component used for battery power detection. It is a commercially available product and can be selected according to actual needs. No specific requirements are given here.

[0130] In some feasible embodiments, the cleaning device for the surface submerged in liquid also includes a wireless control terminal 18 and a wireless communication module 17. The controller 16 in the main body 14 of the device communicates with the wireless control terminal 18 through the wireless communication module 17. The controller 16 sends information to the wireless control terminal 18 through the wireless communication module 17 to provide feedback on the operating status of the cleaning device for the surface submerged in liquid, and receives information sent by the wireless control terminal 18 through the wireless communication module 17 to make action adjustments.

[0131] The wireless communication module 17 includes at least one of the following: Wi-Fi communication module, Bluetooth communication module, 4G module, 5G module, or GPRS module. The selection is based on actual needs and no specific requirements are specified here. The wireless control terminal 18 is a mobile device, such as a mobile phone, computer, or tablet.

[0132] In this case, the wireless control terminal 18 can be configured as follows:

[0133] The controller 16 transmits the remaining battery power information to the wireless control terminal 18 via the wireless communication module 17. The wireless control terminal 18 receives the remaining power from the controller 16 and outputs a user-perceptible remaining power indicator, such as displaying the remaining battery life for the duration of use, the remaining battery power, or the percentage of remaining battery power.

[0134] Based on user input, the wireless control terminal 18 sends manual surfacing and manual descent commands to the controller 16 via the wireless communication module 17.

[0135] Controller 16 can also be configured as:

[0136] Based on the received manual ascent command, an ascent command is sent to the power unit; and

[0137] Based on the received manual descent command, a descent command is sent to the power unit.

[0138] Based on the remaining power, the user determines whether the cleaning device submerged in the liquid needs to be recharged. If so, the user inputs a recharge command. The wireless control terminal 18 sends the recharge command to the controller 16 through the wireless communication module 17. After receiving the recharge command, the controller 16 controls the power unit to move. The power unit drives the partition device 2 to move, thereby increasing the enclosed space and causing the main body of the device 14 to float.

[0139] After rising to the surface, the position detection module 20 detects the position of the wireless charging transmitter and transmits the detected position information to the controller 16. The controller 16 controls the main body 14 of the device to move towards the wireless charging transmitter and get close to the wireless charging transmitter so that the wireless charging transmitter corresponds to the receiver on the main body 14 of the device to perform wireless charging.

[0140] Once the battery is fully charged or meets usage requirements, the wireless control terminal 18 sends a diving command to the controller 16 via the wireless communication module 17. After receiving the diving command, the controller controls the power unit to move, which drives the partition device 2 to move, thereby reducing the enclosed space and allowing the main body 14 of the device to dive.

[0141] In some feasible embodiments, controller 16 is configured as follows:

[0142] If the percentage of remaining charge is ≥ M%, the cleaning device submerged in the liquid will descend;

[0143] If the percentage of remaining charge is ≤ N%, and M > N, the cleaning device submerged in the liquid will float.

[0144] The controller 16 receives the monitoring information of the remaining battery power and compares the received percentage of remaining power with the preset lowering standard value M% and the uppering standard value N%. If the percentage of remaining power is ≥ M%, the controller 16 controls the power unit to move, which drives the partition device 2 to move, thereby reducing the enclosed space and lowering the main body 14. If the percentage of remaining power is ≤ N%, the controller 16 controls the power unit to move, which drives the partition device 2 to move, thereby increasing the enclosed space and raising the main body 14. Here, M is 85-90 and N is 10-15, which can be selected according to actual needs.

[0145] When the cleaning device for the submerged surface in the liquid is working, the impeller rotates to suck up the wastewater from the cleaning drum 13 during washing. The wastewater enters the filter module for filtration, and the filtered clean water is discharged from the outlet. The controller 16 controls the drive module to move, driving the walking module to move. Under the action of the self-weight of the cleaning device for the submerged surface in the liquid and the pressure provided by the discharged water, the cleaning device for the submerged surface in the liquid moves on the bottom and walls of the pool, and the cleaning drum 13 washes the bottom and walls of the pool.

[0146] When the power detection module 19 detects that the remaining power percentage of the battery in the main body 14 is less than N%, such as less than 10%, the controller 16 controls the cleaning device on the submerged surface in the liquid to stop working and transmits the remaining power percentage of the battery to the wireless control terminal 18 through the wireless communication module 17. The user inputs a floating command from the wireless control terminal 18. The controller 16 receives the floating command through the wireless communication module 17 and controls the buoyancy adjustment structure 15 to adjust the buoyancy of the cleaning device on the submerged surface in the liquid. The power component is activated (motor rotates or motor and reducer rotate), driving the power transmission component 3 to operate. The power transmission component 3 transmits power, converting the rotation of the power component into linear motion, thereby driving the separation device 2 to perform reciprocating linear motion, increasing the volume of the sealed space, draining the water between the separation device 2 and the end cap 6, reducing the weight of the cleaning device on the submerged surface in the liquid, causing an imbalance in force, increasing the buoyancy, and causing the cleaning device on the submerged surface in the liquid to float automatically.

[0147] After surfacing, the position detection module 20 detects the position of the wireless charging transmitter and transmits the position information of the wireless charging transmitter to the controller 16. The controller 16 controls the underwater cleaning machine to move closer to the wireless charging transmitter until the wireless charging transmitter corresponds to the receiving end of the wireless charging module, and energy is transferred to charge the battery.

[0148] When the remaining battery charge percentage is greater than M%, such as greater than 90%, and the pool needs cleaning, the user inputs a dive command from the wireless control terminal 18. The controller 16 receives the dive command through the wireless communication module 17. The controller 16 controls the buoyancy adjustment structure 15 to adjust the buoyancy of the cleaning device on the submerged surface in the liquid. The power component rotates in the opposite direction, and the power transmission component 3 transmits power, converting the rotation of the power component into linear motion. This drives the partition device 2 to move in the opposite direction, reducing the volume of the enclosed space. The weight of the cleaning device on the submerged surface in the liquid increases, the buoyancy decreases, and the pool dives to perform underwater cleaning.

[0149] Because of the above technical solution, the cleaning device for submerged surfaces in liquid has a buoyancy adjustment structure. This buoyancy adjustment structure creates a sealed space within the main body of the structure. By changing the volume of the sealed space, the buoyancy of the buoyancy adjustment structure is controlled, making its buoyancy adjustable. This allows it to float or submerge in water. The buoyancy adjustment structure is installed inside the cleaning drum of the cleaning device for submerged surfaces in liquid, making the buoyancy of the cleaning device adjustable. This allows the cleaning device to automatically float to the surface when it needs charging, or when the filter box needs cleaning or machine maintenance. This eliminates the need for manual searching and lifting of the machine, reducing labor, shortening search time, and improving work efficiency. Furthermore, the installation utilizes the internal space of the cleaning drum, eliminating the need to modify the overall structure of the cleaning device for submerged surfaces in liquid.

[0150] The cleaning device for immersion in liquid has a wireless charging module, which enables the cleaning device for immersion in liquid to be wirelessly charged without the need for cables. It can be wirelessly charged whenever it is needed, without being restricted by the environment.

[0151] It has a power detection module that can monitor the remaining power of the battery in the main body of the device and transmit the remaining power information to the controller. The controller controls the buoyancy adjustment structure to operate according to the remaining power information. Alternatively, the controller transmits the remaining power information of the battery to the wireless control terminal via the wireless communication module. The user inputs the buoyancy command or the submersion command to control the cleaning device on the surface of the liquid to rise or submerge, so as to realize the automatic buoyancy and submersion of the cleaning device on the surface of the liquid when it needs to be charged.

[0152] Equipped with a position detection module, when the cleaning device submerged in liquid rises to the surface, it detects the position of the wireless charging transmitter and transmits this position information to the controller. The controller then controls the cleaning device to move closer to the wireless charging transmitter so that the receiver of the wireless charging module corresponds to the transmitter for wireless charging. This enables the cleaning device to automatically locate the wireless charging transmitter.

[0153] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A cleaning device for a surface submerged in a liquid, characterized in that: include, Main body of the device; A wireless charging module, disposed on the main body of the device, charges the battery within the main body of the device; and... An automatic snorkeling structure, through the action of the automatic snorkeling structure, causes the main body of the device to rise or sink; The automatic buoyancy structure is installed inside the cleaning drum of the cleaning device that is submerged in liquid. The cleaning drum is a cylindrical structure with one end closed and the other end open. The open end of the cleaning drum is provided with a cleaning end cap, and the cleaning end cap is provided with a water outlet hole. The outer surface of the cleaning drum is provided with multiple brush blades. The automatic buoyancy-adjustable structure is a buoyancy-adjustable structure that allows the cleaning device submerged in the liquid to float or submerge by adjusting the buoyancy.

2. The cleaning device for a surface submerged in liquid according to claim 1, characterized in that, The cleaning device for submerged surfaces in the liquid is used for pool cleaning, and the charging station is located on the pool shore.

3. The cleaning device for a surface submerged in liquid according to claim 1, characterized in that, The charging station is located in any of the following positions on the pool wall in the vertical direction: Between the pool bottom and the pool surface; Near the surface of the pool; and Above the surface of the swimming pool.

4. The cleaning device for a surface submerged in liquid according to claim 1, characterized in that: The charging station floats on the surface of the swimming pool.

5. The cleaning device for a surface submerged in liquid according to claim 1, characterized in that: The buoyancy adjustment structure includes a main body with one open end, a partition device disposed within the main body, and a power device for driving the partition device to move. The partition device divides the internal space of the main body to create a sealed space. The partition device moves relative to the main body, and the buoyancy in the water is adjusted by the change in the volume of the sealed space so that the main body of the device can float up and submerge.

6. The cleaning device for a surface submerged in liquid according to claim 5, characterized in that: The wireless charging module includes a receiver, which is connected to the battery inside the main body of the device.

7. The cleaning device for a surface submerged in liquid according to claim 6, characterized in that: It also includes a position detection module, which is connected to a controller inside the main body of the device. The position detection module detects the position of the wireless charging transmitter, and the controller controls the main body of the device to move.

8. The cleaning device for a surface submerged in liquid according to claim 7, characterized in that: It also includes a power detection module, which is connected to both the controller and the battery within the main body of the device. The power detection module detects the remaining power of the battery and sends the remaining power to the controller, which is configured as follows: Based on the received remaining battery power, A buoyancy command is sent to the power unit, which drives the separation device to move, thereby increasing the enclosed space and causing the main body of the device to float. and A diving command is sent to the power unit, which drives the partition device to move, thereby reducing the size of the enclosed space and causing the main body of the device to dive.

9. The cleaning device for a surface submerged in a liquid according to claim 8, characterized in that: It also includes a wireless control terminal and a wireless communication module, wherein the controller of the main body of the device communicates with the wireless control terminal through the wireless communication module; The wireless control terminal is configured as follows: Receive the remaining battery power from the controller and output a remaining battery power indicator that is perceptible to the user; and Based on user input, manual ascent and manual descent commands are sent to the controller via the wireless communication module. The controller is also configured to: Based on the received manual ascent command, an ascent command is sent to the power unit; and The power unit is given a diving command based on the received manual diving command.

10. The cleaning device for a surface submerged in a liquid according to claim 8 or 9, characterized in that: The controller is configured as follows: If the percentage of the remaining power is ≥ M%, the cleaning device submerged in the liquid will submerge. If the percentage of the remaining power is ≤ N%, and M > N, the cleaning device submerged in the liquid will float.

11. The cleaning device for a surface submerged in a liquid according to claim 5, characterized in that: The separation device includes a separator and a sealing element disposed on the outer periphery of the separator. The separator is in contact with the inner wall of the main structure, and the sealing element seals the contact area between the separator and the main structure.

12. The cleaning device for a surface submerged in a liquid according to claim 11, characterized in that: The power unit includes a power component and a power transmission component connected to the power component. The power component drives the power transmission component to move, thereby driving the separating device to move.

13. The cleaning device for a surface submerged in a liquid according to claim 12, characterized in that: The power transmission assembly includes a rotating component, a movable component disposed on the rotating component and movable relative to the rotating component, and a telescopic component connected to the movable component. One end of the telescopic component is connected to the separating device. The rotating component drives the movable component to move, causing the telescopic component to extend or shorten, thereby driving the separating device to move.

14. The cleaning device for a surface submerged in a liquid according to claim 13, characterized in that: The telescopic component is a four-bar linkage, and the rotating component is a lead screw.

15. The cleaning apparatus for a surface submerged in a liquid according to claim 13 or 14, characterized in that: The power assembly includes a power component and a transmission component connected to the power component. The transmission component is connected to the rotating component and drives the rotating component to rotate.

16. The cleaning apparatus for a surface submerged in a liquid according to claim 15, characterized in that: The telescopic component is provided with a guide, and the inner wall of the main structure is provided with a corresponding groove. The guide is inserted into the groove and slides along the groove.

17. The cleaning device for a surface submerged in a liquid according to claim 12, characterized in that: The power transmission assembly includes a first rotating member, a second rotating member, and a flexible member respectively wound around the first rotating member and the second rotating member. The first rotating member is rotatably connected to the separating device, and the second rotating member is rotatably connected to the main structure. One end of the flexible member is connected to the main structure, and the other end is connected to the power assembly. The power assembly drives the flexible member to move, and the first rotating member and the second rotating member rotate, driving the separating device to move.

18. The cleaning device for a surface submerged in a liquid according to claim 13, characterized in that: The power transmission assembly includes a third rotating component that is rotatably connected to the main structure. One end of the third rotating component is rotatably connected to the separating device, and the other end is connected to the power assembly. When the third rotating component rotates, it drives the separating device to move.

19. The cleaning apparatus for a surface submerged in a liquid according to any one of claims 11-14 and 16-18, characterized in that: The main body of the structure is a cylindrical structure that is closed at one end and open at the other end. The open end of the main body of the structure is provided with an end cap, and the end cap is provided with a water outlet.

20. The cleaning device for a surface submerged in a liquid according to claim 19, characterized in that: The sealed space is formed between the separating device and the closed end of the main structure.

21. The cleaning device for a surface submerged in a liquid according to claim 19, characterized in that: The main body of the structure has a spacer inside, and the spacer and the spacer together form the sealed space.

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