Automatic cleaning device for pool

Abstract

The utility model provides an automatic pool cleaning device which comprises a body, an upper water suction opening, a bottom water suction opening, a water level sensor and a control unit, the water level sensor is arranged at the preset position of the front portion of the body, and the preset position corresponds to the upper water suction opening and the bottom water suction opening. The control unit can control the automatic pool cleaning device to conduct cleaning operation in a pool wall cleaning mode and a water surface cleaning mode, and in the pool wall cleaning mode and the water surface cleaning mode, the water level sensor can be used for sensing whether the preset position is higher than the water surface or not. According to the automatic pool cleaning device, the pose and movement of the automatic pool cleaning device relative to the waterline can be controlled in the two cleaning modes by means of one sensor, the manufacturing cost is saved, and the manufacturing complexity is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cleaning devices, in particular to an automatic pool cleaning device. BACKGROUND

[0002] With the gradual popularization and application of swimming pools, automatic pool cleaning robots are widely used to clean the bottom and walls of swimming pools, greatly reducing the demand and cost of manual cleaning. At present, most automatic pool cleaning robots are equipped with sensors. Such sensors are used to detect the water exit state and water entry state of the automatic pool cleaning robot. Such sensors are generally located at the front of the robot body. When the robot climbs the wall or is moved out of the water surface, the data obtained by the sensor will change, and accordingly the robot can detect the current water exit and entry state. The requirements for such sensors are different when the automatic pool cleaning robot cleans the wall and the water surface. Therefore, if the position of the sensor is not properly set, it will affect the cleaning effect, and even the robot may not be able to perform cleaning operations in the pool. CONTENT OF THE UTILITY MODEL

[0003] The technical problem to be solved by the present application is to solve the above-mentioned problems of the prior art. The present application provides an automatic pool cleaning device which has a wall cleaning mode and a water surface cleaning mode, and can effectively detect the water level line when cleaning the wall and the water surface.

[0004] In one aspect of the present application, an automatic pool cleaning device is provided, comprising: a main body; an upper water suction port and a bottom water suction port; and a water level sensor, the water level sensor being arranged at a predetermined position at the front of the main body, the predetermined position corresponding to the upper water suction port and the bottom water suction port; a control unit, wherein the control unit can control the automatic pool cleaning device to perform cleaning operations in a wall cleaning mode and a water surface cleaning mode, wherein in the wall cleaning mode and in the water surface cleaning mode, the water level sensor can be used to sense whether the predetermined position is higher than the water surface.

[0005] Further, the line between at least a portion of the upper water suction port and the predetermined position is parallel or substantially parallel to the bottom surface of the main body.

[0006] Further, in the water surface cleaning mode, the automatic pool cleaning device can float from the water to the water surface, and if the water level sensor is higher than the water surface, the control unit can control the automatic pool cleaning device to stop floating to the water surface.

[0007] Further, in the water surface cleaning mode, the bottom surface of the main body faces the pool bottom of the pool.

[0008] Further, in the pool wall cleaning mode, the pool wall cleaning device is capable of moving upwards along the pool wall, wherein if the water level sensor is above the water surface, the control unit is capable of controlling the pool wall cleaning device to stop moving upwards.

[0009] Further, in the pool wall cleaning mode, the bottom surface of the main body faces the pool wall.

[0010] Further, a height difference between at least a portion of the upper water suction port and a projection of the predetermined position on the same side surface of the main body is within a first predetermined distance range.

[0011] Further, the first predetermined distance is between 5 cm and 15 cm.

[0012] Further, the pool wall cleaning device, wherein a distance between a projection of the predetermined position on the bottom surface of the main body and the bottom water suction port is less than or equal to a second predetermined distance.

[0013] Further, the second predetermined distance is between 5 cm and 15 cm.

[0014] Compared with the prior art, the beneficial effects of the present application are:

[0015] The present application sets the water level sensor at a predetermined position on the front of the main body, so that it can sense whether the predetermined position is above the water surface in the pool wall cleaning mode and the water surface cleaning mode. The water level sensor at the predetermined position can sense whether the predetermined position is above the water surface in the pool wall cleaning mode and the water surface cleaning mode. The robot can control the pose and movement of the robot relative to the water line in the two cleaning modes by means of this one sensor, so that the robot does not need to set one sensor for each working mode, saving the manufacturing cost of the robot and reducing the manufacturing complexity. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the specification explain the application. The use of the same reference symbols in different drawings indicates similar or identical components.

[0017] Figure 1 The side of the pool wall cleaning device of the present application is schematically shown;

[0018] Figure 2 The plane in which the upper water suction port of the pool wall cleaning device of the present application is located is schematically shown;

[0019] Figure 3 The plane in which the bottom water suction port of the pool wall cleaning device of the present application is located is schematically shown.

[0020] Wherein, the above-mentioned drawings include the following reference signs:

[0021] 1, main body; 2, upper water suction port; 3, bottom water suction port; 4, water level sensor; 5, control unit. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the protection scope of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In order to solve the problem that the water outlet detection sensor of the pool automatic cleaning device has different requirements when cleaning the pool wall and the water surface, and the improper position of the water outlet detection sensor will affect the cleaning effect in the related art, the present application provides a pool automatic cleaning device which can have a pool bottom cleaning mode, a pool wall cleaning mode and a water surface cleaning mode.

[0024] It can be understood that the pool automatic cleaning device can clean the pool. The pool is, for example, a pool-shaped building. The pool-shaped building can be a swimming pool, a water storage pool, a hydrotherapy pool, a water storage tank, a water storage tank, etc. The pool automatic cleaning device can be a device such as an automatic cleaning device, a pool cleaning robot, etc., which can clean the pool-shaped building. The present application does not limit the specific presentation of the pool automatic cleaning device and the pool-shaped building, as long as the principle of the present application can be realized. Hereinafter, if not specifically stated, the robot will be taken as an example to explain the pool automatic cleaning device, and the swimming pool will be taken as an example to explain the pool or pool-shaped building. Hereinafter, if not specifically stated, the terms "pool bottom", "swimming pool bottom surface", "swimming pool bottom" all represent the pool bottom surface of the swimming pool; the terms "pool wall", "pool wall surface" all represent the pool wall surface of the swimming pool.

[0025] The pool bottom cleaning mode is the traditional operation mode currently possessed by the pool automatic cleaning device. Specifically, a water pump and a garbage basket are arranged inside the pool automatic cleaning device. In this mode, the water and impurities in the pool are sucked into the pool automatic cleaning device by the water pump, the impurities enter and are retained in the garbage basket when passing through the garbage basket, and the water is discharged, thereby achieving the purpose of cleaning the pool bottom. The cleaning movement track of the pool automatic cleaning device on the pool bottom can be set according to the actual situation, and the present application does not make specific limitation thereto.

[0026] The pool wall cleaning mode is also called wall climbing mode, which mainly uses the vacuum adsorption principle to adhere to the pool wall. Specifically, when the pool automatic cleaning device is on the pool wall, a low pressure area is formed between the pool automatic cleaning device and the pool wall due to the operation of the water pump, thereby generating an adsorption force perpendicular to the pool wall (i.e., pointing to the pool wall), and the size of the adsorption force is related to the power of the water pump. When the pool automatic cleaning device moves on the pool wall, the pool automatic cleaning device is subjected to vertical upward buoyancy, vertical downward gravity, driving force in the direction of travel, and friction force opposite to the direction of movement, or when the pool wall is not completely in the vertical direction, the pool automatic cleaning device is subjected to driving force, friction force, and gravity and buoyancy in the direction parallel to the pool wall. Among them, the friction force is directly related to the size of the adsorption force, and by adjusting the driving force and the adsorption force, the movement direction and cleaning speed of the pool automatic cleaning device on the pool wall can be changed. When the resultant force of the pool automatic cleaning device in the direction parallel to the pool wall is upward, the pool automatic cleaning device moves upward for cleaning; when the resultant force is zero, the pool automatic cleaning device stays on the surface of the pool wall; and when the resultant force is downward, the pool automatic cleaning device moves downward for cleaning. The cleaning movement trajectory of the pool automatic cleaning device on the pool wall can be set according to actual conditions, which can be cleaning the pool wall upward from the pool bottom and then returning to the pool bottom to change position and clean the pool wall upward again; or it can be Z-shaped or other trajectories upward.

[0027] The water surface cleaning mode is also called water surface boat mode. In this mode, the forces in the vertical direction of the pool automatic cleaning device are mainly gravity and buoyancy, and the pool automatic cleaning device adjusts the size of the buoyancy to control its up and down floating on the water surface, i.e., adjusts the height position of the pool automatic cleaning device relative to the horizontal plane. At the same time, the robot working in this cleaning mode can also be subjected to horizontal driving force, water surface resistance, wind force, etc. The cleaning movement trajectory of the pool automatic cleaning device on the water surface is set according to actual conditions, which is not limited in the present application.

[0028] Among them, the conversion mode between the pool bottom cleaning mode, the pool wall cleaning mode and the water surface cleaning mode can be: converting from the pool bottom cleaning mode to the water surface cleaning mode, converting from the pool wall cleaning mode to the water surface cleaning mode, converting from the pool bottom cleaning mode to the pool wall cleaning mode and then to the water surface cleaning mode. The conversion between the three modes is not limited to the above two processes, and other adjustments related to the present application according to actual needs are within the protection scope of the present application.

[0029] The pool automatic cleaning device of the present application will be described in detail below in conjunction with the drawings. Figure 1 The side of the pool automatic cleaning device of the present application is schematically shown, and a water level sensor is arranged on the side. Figure 2The present application provides a front view of the pool automatic cleaning device, i.e., a plane where the upper water suction port of the pool automatic cleaning device is located. Figure 3 The present application provides a bottom view of the pool automatic cleaning device, i.e., a plane where the bottom water suction port of the pool automatic cleaning device is located.

[0030] For example, Figure 1 For example, Figure 1 The right side direction of the robot is the head and front part of the robot, Figure 1 The left side direction of the robot is the tail and rear part of the robot, and the robot can travel in the head direction (i.e., forward) or in the tail direction (i.e., backward).

[0031] As shown in Figure 1 and Figure 3 The present application provides a pool automatic cleaning device, comprising: a main body 1; an upper water suction port 2 and a bottom water suction port 3; a water level sensor 4, which is arranged at a predetermined position of the front part of the main body 1, and the predetermined position corresponds to the upper water suction port 2 and the bottom water suction port 3; a control unit 5, wherein the control unit 5 can control the pool automatic cleaning device to perform cleaning work in a pool wall cleaning mode and a water surface cleaning mode, and in the pool wall cleaning mode and in the water surface cleaning mode, the water level sensor 4 can be used to sense whether the predetermined position is higher than the water surface.

[0032] The main body 1 is the main part of the pool automatic cleaning device, wherein the main body 1 can include a shell, a handle, a drain port and other components. Those skilled in the art can select and arrange the components constituting the main body 1 according to the principles of the present application, as long as the technical principles of the present application can be realized.

[0033] As shown in Figure 1 and Figure 2 The upper water suction port 2 is located at the front part of the pool automatic cleaning device. Specifically, the upper water suction port 2 is located on the front surface of the main body 1. When the robot performs cleaning work in the water, the water can be sucked into the garbage basket through the upper water suction port 2 and filtered. For example, in the water surface cleaning mode, the robot floats on the water surface, at which time the upper water suction port 2 is in contact with the water surface, so that the robot can suck the garbage / debris on the water surface into the garbage basket through the upper water suction port and filter it. The upper water suction port 2 will be further described below in combination with specific embodiments.

[0034] The upper water suction port 2 can have a square opening, a rectangular opening, a circular opening, an elliptical opening, etc., and the present application does not limit the shape of the upper water suction port 2.

[0035] It should be noted that in the water surface cleaning mode, the upper water suction port 2 intersects with the water surface, in other words, the upper water suction port should be at least partially in contact with the water surface in order to clean the water surface. If the upper water suction port is completely above the water surface, water cannot be sucked into the trash basket.

[0036] It should be noted that the upper water suction port has a certain opening area, in other words, the upper water suction port has a certain length and width on the front surface of the main body 1. In this application, if not specifically stated, the "distance of the upper water suction port from a certain place" refers to the distance between "at least a part of the upper water suction port" and a certain place, for example: the vertical distance between the lower edge of the upper water suction port and a certain place, the vertical distance between the side edge of the upper water suction port and a certain place, the distance between the geometric center position of the outer frame area of the upper water suction port and a certain place, the distance between the projection point of the geometric center position of the outer frame area of the upper water suction port on a certain plane of the main body 1 and a certain place, and so on.

[0037] As shown in Figure 2 and Figure 3 The bottom water suction port 3 is located at the bottom of the pool automatic cleaning device. Specifically, the bottom water suction port 3 is located on the bottom surface of the main body 1, and the bottom surface of the main body 1 faces the surface to be cleaned (such as the bottom surface of the pool, the side wall surface). Preferably, the bottom water suction port can be arranged on the bottom surface of the main body 1 near the front of the main body 1. For example, the vertical distance between the bottom water suction port and the front surface of the main body 1 is less than or equal to a predetermined distance threshold.

[0038] The water level sensor 4 can be a pressure sensor, an ultrasonic sensor, an infrared sensor, a photoelectric sensor, an electrical conductivity sensor, or other sensors that can achieve the sensing of the in-out water state of the device. The above description of the type of water level sensor is only exemplary, and those skilled in the art can select the water level sensor according to actual needs as long as the technical principles of this application can be achieved.

[0039] The control unit 5 can control the pool automatic cleaning device to perform cleaning operations in the pool wall cleaning mode and the water surface cleaning mode. The control unit 5 can read data from the water level sensor 4 and process the data to determine whether the predetermined position of the water level sensor 4 is above the water surface. The control unit can also control components such as the water pump, the driving device, the battery, etc.

[0040] As shown in Figure 1The control unit 5 is shown to be disposed at the rear portion of the pool cleaning robot. In an embodiment, the control unit 5 can also be disposed at other positions of the pool cleaning robot, such as the middle portion and the front portion. The above selection of the position of the control unit 5 is exemplary and is not intended to limit the position of the control unit 5 in the pool cleaning robot.

[0041] Figure 1 The pool cleaning robot is shown to be placed on a horizontal plane. The bottom surface of the main body 1 faces the horizontal plane, the surface on which the upper water suction port 2 is located is the front surface, the surface opposite to the surface on which the upper water suction port 2 is located is the rear surface, and the two side surfaces between the front surface and the rear surface are respectively the left side surface and the right side surface.

[0042] The water level sensor 4 is disposed at a predetermined position of the front portion of the main body 1. The water level sensor 4 can be disposed inside the main body 1, or can be disposed at the left side surface or the right side surface of the main body 1. When the pool cleaning robot is in the pool wall cleaning mode (i.e., moving upwards along the pool wall), or in the water surface cleaning mode (i.e., floating on the water surface), the water level sensor 4 can sense the change of data (e.g., the change of pressure value) and provide the data to the control unit 5, so that the control unit 5 determines the water-out state and the water-in state of the pool cleaning robot.

[0043] The predetermined position corresponds to the upper water suction port 2 and the bottom water suction port 3. By disposing the water level sensor 4 at the predetermined position, the water level sensor 4 can be used for both the pool wall cleaning mode and the water surface cleaning mode, in other words, the water level sensor 4 disposed at the predetermined position can sense whether the predetermined position is higher than the water surface in the pool wall cleaning mode and the water surface cleaning mode, so that the robot can control the movement of the robot relative to the water line in the two cleaning modes by means of one sensor (i.e., the water level sensor 4), so that the robot does not need to set one sensor for each working mode, saving the manufacturing cost of the robot and reducing the manufacturing complexity.

[0044] Specifically, in the pool wall cleaning mode, the pool cleaning robot can move upwards along the pool wall, wherein if the water level sensor 4 is higher than the water surface, the control unit 5 can control the pool cleaning robot to stop moving upwards. In the pool wall cleaning mode, the bottom surface of the main body 1 faces the pool wall. Under the combined action of driving force, friction force, gravity and buoyancy, the pool cleaning robot moves up and down along the pool wall for cleaning.

[0045] In the pool wall cleaning mode, the robot can use the water level sensor 4 located at the predetermined position to determine whether the front of the robot is above the water surface. If the front of the robot is above the water surface (i.e., the control unit 5 determines that the predetermined position is above the water surface based on the data from the water level sensor 4), the robot can adjust its speed and direction (e.g., move the robot backward along the pool wall so that the front of the robot returns to below the water surface). This, on the one hand, allows the bottom water intake 3 to approach the waterline when the robot moves upward along the pool wall, so that the waterline can be cleaned. On the other hand, this prevents the robot from moving too upward, causing the bottom water intake 3 to be above the water surface (or completely above the water surface), which would ultimately cause the robot to lose its suction force on the pool wall due to the bottom water intake 3 being unable to absorb water and thus detach from the pool wall. After the front of the robot returns to below the water surface (i.e., the control unit 5 determines that the predetermined position is below the water surface based on the data from the water level sensor 4), the robot can move upward along the pool wall again so that the bottom water intake 3 is close to the waterline again, and after the water level sensor 4 is above the water surface, the robot can return to below the water surface. In this way, the robot can move up and down near the waterline, improving the cleaning effect of the bottom water inlet 3 on the waterline. Therefore, the positional relationship between the predetermined position of the water level sensor 4 and the bottom water inlet 3 is crucial for the robot to be able to promptly identify the relative position of the main body 1 and the water surface, adjust the driving speed and direction in a timely manner, and ensure that the bottom water inlet 3 is not completely exposed above the water surface.

[0046] In one embodiment, if Figure 3 As shown, the distance between the projection of the predetermined position on the bottom surface of the main body 1 and the bottom water inlet 3 is less than or equal to a second predetermined distance. The bottom water inlet 3 may be a rectangular opening, but is not limited thereto. The second predetermined distance is between 5 cm and 15 cm.

[0047] For example, the projection of the water level sensor 4 on the bottom surface of the main body 1 is located between the projection line of the front surface of the main body 1 and the bottom water suction port 3, and the distance between the projection of the water level sensor 4 and the bottom water suction port 3 is less than or equal to the second predetermined distance (for example, 5-15 cm). In the pool wall cleaning mode, when the water level sensor 4 is above the water surface, the front edge of the bottom water suction port 3 is still below the water surface, which can ensure that the robot cleans the waterline area, and at the same time, the bottom water suction port 3 of the robot does not suck in air to make the robot lose balance. At this time, the water level sensor 4 transmits the detected data of the water outflow state to the control unit 5, and the control unit 5 processes the data and then sends a power adjustment instruction (i.e., reduces the water pump power) to the water pump. The water pump reduces the power according to the instruction. Within this response time, the robot still has an upward moving speed on the pool wall, and correspondingly, the bottom water suction port 3 also has a certain upward displacement within this response time, so as to approach the water surface or even partially expose the bottom water suction port 3 to the water surface (at least ensure that the bottom water suction port 3 cannot be completely exposed to the water surface), thereby cleaning the waterline of the pool wall.

[0048] In the water surface cleaning mode, the pool automatic cleaning device can float from the water to the water surface, and if the water level sensor 4 is above the water surface, the control unit 5 can control the pool automatic cleaning device to stop floating to the water surface. In the water surface cleaning mode, the bottom surface of the main body 1 faces the pool bottom.

[0049] In the water surface cleaning mode, the robot can determine whether the upper part of the robot is exposed to the water surface through the water level sensor 4 arranged at the predetermined position, so that in the case that the upper part of the robot is exposed to the water surface (i.e. the control unit 5 determines that the predetermined position is higher than the water surface through the data of the water level sensor 4), the buoyancy of the robot is adjusted so that the robot can maintain the relative position between the main body 1 and the water surface, and further maintain the relative position between the upper water suction port 2 and the water surface. In this case, the upper water suction port 2 intersects with the water surface, so that the robot can suck the garbage on the water surface into the garbage basket through the upper water suction port 2, thereby avoiding the case that the upper water suction port 2 of the robot is completely above the water surface and cannot suck water. If the upper water suction port 2 of the robot is completely above the water surface, the robot can adjust the buoyancy (e.g. suck some water into the main body 1), so that the main body 1 sinks by a certain distance, so that the upper water suction port 2 intersects with the water surface, and when the predetermined position sinks below the water surface, the water level sensor 4 provides data to the control unit 5, so that the control unit 5 stops adjusting the buoyancy (e.g. stops sucking water into the main body 1), thereby ensuring the relative position between the main body 1 and the water surface, and further maintaining the upper water suction port 2 at the position intersecting with the water surface. Therefore, the positional relationship between the predetermined position where the water level sensor 4 is located and the upper water suction port 2 is crucial for the robot to timely identify the relative position between the main body 1 and the water surface, timely adjust the buoyancy, and ensure that the upper water suction port 2 intersects with the water surface.

[0050] In an embodiment, the line between at least a part of the upper water suction port 2 and the predetermined position is parallel or substantially parallel to the bottom surface of the main body.

[0051] The line between at least a part of the upper water suction port 2 and the predetermined position can be any one of the following: the line between the lower edge of the upper water suction port 2 and the predetermined position, the line between the side edge of the upper water suction port 2 and the predetermined position, the line between the upper edge of the upper water suction port 2 and the predetermined position, the line between the sampling point of the outer frame of the upper water suction port 2 and the predetermined position, and the line between the geometric center position of the outer frame area of the upper water suction port 2 and the predetermined position. In this application, if not otherwise specifically stated, the line between a line segment (e.g. the lower edge, side edge, upper edge of the upper water suction port 2) and a point (e.g. the predetermined position) refers to the line between the sampling point, end point, midpoint, etc. of the line segment and the point, and the expression of the line between the line segment and the point is used for the convenience of description.

[0052] The above description of the line between at least a part of the upper water suction port 2 and the predetermined position is exemplary, and those skilled in the art can adaptively select the "at least a part" of the upper water suction port 2 according to the technical principles of the present application.

[0053] In one embodiment, "at least a portion" of the upper water suction port 2 may be the geometric center of the outer frame area of ​​the upper water suction port. Figure 2 As shown, the line connecting the geometric center position of the outer frame area of ​​the upper water suction port 2 and the predetermined position is parallel or substantially parallel to the bottom surface of the main body 1. By associating the geometric center position of the outer frame area of ​​the upper water suction port 2 with the predetermined position where the water level sensor 4 is located, so that the line connecting the two is parallel or substantially parallel to the bottom surface of the main body 1, in the water surface cleaning mode, when the predetermined position is exposed to the water surface, the upper water suction port 2 intersects with the water surface. This positional relationship between the geometric center position of the outer frame area of ​​the upper water suction port 2 and the predetermined position where the water level sensor 4 is located helps the robot to promptly identify the relative position of the main body 1 and the water surface, promptly adjust the buoyancy, and ensure that the upper water suction port 2 intersects with the water surface.

[0054] In another embodiment, the line connecting the upper edge of the upper water suction port 2 and the predetermined position is parallel or substantially parallel to the bottom surface of the main body 1. By associating the upper edge of the upper water suction port 2 (as explained above, the midpoint of the upper edge of the upper water suction port 2 can be used here) with the predetermined position where the water level sensor 4 is located, so that the line connecting the two is parallel or substantially parallel to the bottom surface of the main body 1, in the water surface cleaning mode, when the predetermined position is exposed to the water surface, the upper water suction port 2 intersects with the water surface. Such a positional relationship between the upper edge of the upper water suction port 2 and the predetermined position where the water level sensor 4 is located helps the robot to promptly identify the relative posture of the main body 1 and the water surface, promptly adjust the buoyancy, and ensure that the upper water suction port 2 intersects with the water surface.

[0055] In another embodiment, the geometric center position of the outer frame area of ​​the upper water suction port 2 and the predetermined position are both on the same side of the main body 1 (for example, Figure 1 The height difference between the projection of the upper water intake port 2 on the right side of the main body 1 (as shown) is within a first predetermined distance range. The first predetermined distance is between 5 cm and 15 cm. Although there is a height difference between the geometric center position of the outer frame area of ​​the upper water intake port 2 and the projection of the predetermined position on the same side of the main body 1, due to the upper water intake port having a certain height, when the robot senses that the predetermined position is above the water surface through the water level sensor 4 at the predetermined position, the upper water intake port can still intersect with the water surface.

[0056] When in the water surface cleaning mode, the automatic pool cleaning device can float from the water to the water surface. When the water level sensor 4 is higher than the water surface, the detected signal is transmitted to the control unit 5. After processing the signal, the control unit 5 sends an adjustment instruction to the buoyancy adjustment component (not shown, such as the air pump in the main body 1) to stop the automatic pool cleaning device from floating up, so that the upper water suction port 2 remains in an intersecting state with the water surface.

[0057] According to the above description, the water level sensor 4 can realize the recognition and control of the robot to the water-out state and the water-in state by sensing the change of data in the pool wall cleaning mode and the water surface cleaning mode, so that the robot does not need to set a sensor for the two working modes, saving the manufacturing cost of the robot and reducing the manufacturing complexity.

[0058] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0059] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0060] In the present application, the orientation words such as "up, down" are generally directed to the direction shown in the drawings, or to the vertical, perpendicular or gravity direction, unless otherwise stated; similarly, for the convenience of understanding and description, "left, right" is generally directed to the left and right of the drawings; "inner, outer" refers to the inner and outer relative to the contour of each component, but the above orientation words are not used to limit the present application.

[0061] The basic principles, main features and beneficial effects of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions described in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements of the present application are made, which fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An automatic pool cleaning device, comprising: a main body (1); an upper water suction port (2) and a lower water suction port (3); a water level sensor (4) disposed at a predetermined position of a front portion of the main body (1), the predetermined position corresponding to the upper water suction port (2) and the lower water suction port (3); and a control unit (5), wherein the control unit (5) is capable of controlling the automatic pool cleaning device to perform a cleaning operation in a pool wall cleaning mode and a water surface cleaning mode, wherein in the pool wall cleaning mode and in the water surface cleaning mode, the water level sensor (4) is used to sense whether the predetermined position is above a water surface. A line between at least a portion of the upper water suction port (2) and the predetermined position is parallel to a bottom surface of the main body.

2. The pool cleaning apparatus of claim 1, wherein, In the water surface cleaning mode, the automatic pool cleaning device is capable of floating from water to the water surface, wherein if the water level sensor (4) is above the water surface, the control unit (5) is capable of controlling the automatic pool cleaning device to stop floating to the water surface.

3. The pool cleaning apparatus of claim 2, wherein, In the water surface cleaning mode, a bottom surface of the main body (1) faces a pool bottom of a pool.

4. The pool cleaning apparatus of any one of claims 1-3, wherein, In the pool wall cleaning mode, the automatic pool cleaning device is capable of moving upward along a pool wall of a pool, wherein if the water level sensor (4) is above the water surface, the control unit (5) is capable of controlling the automatic pool cleaning device to stop moving upward.

5. The pool cleaning apparatus of claim 1, wherein, In the pool wall cleaning mode, the bottom surface of the main body (1) faces the pool wall.

6. The pool cleaning apparatus of claim 5, wherein, A height difference between at least a portion of the upper water suction port (2) and a projection of the predetermined position on a same side of the main body (1) is within a first predetermined distance range.

7. The pool cleaning apparatus of claim 1, wherein, The first predetermined distance is between 5 cm and 15 cm.

8. The automatic pool cleaning device according to claim 7, wherein: ​

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