Automatic pool cleaning device

Abstract

The application provides a pool automatic cleaning device (10), which comprises a main body (100), a water pump (110), a first filter assembly (120) and a second filter assembly (130). The main body (100) comprises a water inlet and a water outlet, and the water inlet and the water outlet are provided with a first water flow channel and a second water flow channel. The first water flow channel passes through the first filter assembly (120), the second water flow channel passes through the second filter assembly (130), and the water pump (110) can guide water flow into the first water flow channel and / or the second water flow channel. The second water flow channel can be turned on or closed, and in the state that the first water flow channel is blocked, the second water flow channel is turned on.

Description

Technical Field

[0001] This application relates to the technical field of automatic water tank cleaning devices, and more particularly to an automatic water tank cleaning device. Background Technology

[0002] With the increasing popularity of swimming pools, cleaning them has become a crucial aspect of their use, leading to the increasingly sophisticated functions of pool cleaning robots. Current pool cleaning robots can, for example, have pool bottom cleaning, pool wall cleaning, or surface cleaning modes. In these robots, the filtration system is the core component responsible for these cleaning modes, and its performance directly affects the efficiency and effectiveness of the filtration. If the filtration system in existing pool cleaning robots becomes clogged, it can reduce suction power and cause a loss of flow, ultimately rendering the robot unable to suction out dirt and even preventing it from climbing walls using suction power. Utility Model Content

[0003] This application addresses the shortcomings of the prior art by providing an automatic water tank cleaning device, comprising: a main body, a water pump, a first filter assembly, and a second filter assembly; the main body includes an inlet and an outlet, with a first water flow channel and a second water flow channel between the inlet and the outlet, the first water flow channel passing through the first filter assembly, the second water flow channel passing through the second filter assembly, and the water pump capable of guiding water flow into the first water flow channel and / or the second water flow channel, the second water flow channel being capable of being opened or closed, wherein the second water flow channel is opened when the first water flow channel is blocked.

[0004] Furthermore, the second water flow channel is closed while the first water flow channel is not blocked.

[0005] Furthermore, the automatic cleaning device for the water tank also includes a first valve, which can control the opening or closing of the second water flow channel.

[0006] Furthermore, the first valve is located in the second water flow channel between the water inlet and the second filter assembly, or the first valve is located in the second water flow channel between the water outlet and the second filter assembly.

[0007] Furthermore, the water inlet includes a first sub-inlet and a second sub-inlet, wherein the first sub-inlet is connected to the first water flow channel, and the second sub-inlet is connected to the second water flow channel.

[0008] Furthermore, it also includes a first sensor and a controller, wherein the controller can determine whether the first water flow channel is blocked by the first sensor, and in the event of a blockage, the controller can control the opening or closing of the second water flow channel.

[0009] Furthermore, it also includes a controller, wherein the controller is able to determine whether the first water flow channel is blocked based on the rotational speed of the water pump, and, in the event of a blockage, the controller is able to control the opening or closing of the second water flow channel.

[0010] Furthermore, the first filter component includes a first filter screen, and the second filter component includes a second filter screen. The filtration level of the second filter screen is different from that of the first filter screen, wherein the filtration level of the second filter screen is higher than that of the first filter screen.

[0011] Furthermore, it also includes a second valve, which can control the opening or closing of the first water flow channel.

[0012] Furthermore, the main body also includes a first receiving compartment for accommodating the first filter assembly and a second receiving compartment for accommodating the second filter assembly.

[0013] The embodiments described in this application have the following beneficial effects: The automatic water tank cleaning device provided in this application has two filter components, which allows the automatic water tank cleaning device to use the other filter component when one filter component becomes clogged. The automatic water tank cleaning device can maintain stable operation by relying on the suction provided by the other filter component, thereby improving the cleaning efficiency and effect of the automatic water tank cleaning device. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. The accompanying drawings in the following description are merely exemplary embodiments of this disclosure.

[0015] Figure 1 A schematic diagram of the automatic water tank cleaning device of this application is shown. Figure 1 ; Figure 2 A schematic diagram of the automatic water tank cleaning device of this application is shown. Figure 2 ;as well as Figure 3 A schematic diagram of the automatic water tank cleaning device of this application is shown. Figure 3 .

[0016] Label Explanation 10. Automatic water tank cleaning device; 100. Main body; 110. Water pump; 120. First filter assembly; 130. Second filter assembly; 201, 310. First valve. Detailed Implementation

[0017] The embodiments of this disclosure will now be described with reference to the accompanying drawings. The described embodiments are merely some, not all, of the embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the protection scope of this application. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0018] This application provides an automatic pool cleaning device. This automatic pool cleaning device is capable of cleaning pools. The pool is, for example, a pool-shaped structure. The pool-shaped structure can be a swimming pool, a water storage tank, a spa pool, a water storage tank, a water storage trough, etc. The automatic pool cleaning device can be a device such as an automatic cleaning device or a pool cleaning robot, capable of cleaning the pool-shaped structure. This application does not limit the specific presentation of the automatic pool cleaning device or the pool-shaped structure, as long as the principle of this application is achieved. In the following description, unless otherwise specified, a robot will be used as an example of the automatic pool cleaning device, and a swimming pool will be used as an example of a pool or pool-shaped structure. In the following description, unless otherwise specified, the terms "pool bottom," "pool bottom surface," and "pool base" all refer to the bottom surface of the swimming pool.

[0019] Reference Figure 1 This application provides an automatic water tank cleaning device 10, comprising: a main body 100, a water pump 110, a first filter assembly 120, and a second filter assembly 130; the main body 100 includes an inlet and an outlet, and a first water flow channel and a second water flow channel are provided between the inlet and the outlet, the first water flow channel passing through the first filter assembly 120, the second water flow channel passing through the second filter assembly 130, and the water pump 110 is capable of guiding water flow into the first water flow channel and / or the second water flow channel, the second water flow channel being capable of being opened or closed, wherein the second water flow channel is opened when the first water flow channel is blocked.

[0020] The main body 100 of the automatic pool cleaning device 10 can be made of corrosion-resistant, waterproof, and structurally strong materials such as metal or engineering plastics. The main body 100 can support and protect the various components inside the automatic pool cleaning device 10 (such as the water pump 110, the first filter assembly 120, and the second filter assembly 130), ensuring that the robot 10 will not short-circuit due to water contact with internal motors, sensors, and control boards during cleaning operations, thereby preventing leakage and ensuring user safety.

[0021] like Figure 1 As shown, the water pump 110 can be housed inside the main body 100, for example. The water pump 110 can be a centrifugal pump or a submersible pump 110, which generates centrifugal force by rotating an impeller to drive water flow. The water pump 110 has a waterproof motor that directly drives the impeller, allowing the water pump 110 to operate normally underwater.

[0022] The first filter assembly 120 and the second filter assembly 130 may, for example, be disposed inside the main body 100. (See reference...) Figure 1 The first filter assembly 120 and the second filter assembly 130 may be arranged adjacent to each other. The filter assembly may be a hollow structure capable of accommodating various types of dirt (such as leaves, insects, pebbles, and foam) in the pool. The first filter assembly 120 and the second filter assembly 130 may filter the dirt using a filter screen (with multiple mesh openings). The filter screen will be described in detail below. Dirt larger than the mesh openings will be trapped inside the filter assembly, while the filtered liquid will be discharged into the pool to complete the cleaning process.

[0023] The second filter component 130 and the first filter component 120 may have the same or different filtration capabilities for dirt, and this application does not limit this.

[0024] The first filter assembly 120 includes a first filter screen, and the second filter assembly 130 includes a second filter screen. The filtration level of the second filter screen is different from that of the first filter screen, wherein the filtration level of the second filter screen is higher than that of the first filter screen.

[0025] The first filter screen can be disposed, for example, inside or outside the first filter assembly 120, and the second filter screen can be disposed, for example, inside or outside the second filter assembly 130. The first and second filter screens have different filtration levels, meaning they can filter dirt of different sizes. Understandably, the different mesh sizes of the first and second filter screens achieve different filtration levels.

[0026] The second filter can have a higher filtration level than the first filter, meaning its filtration precision is higher, and it can intercept smaller impurities compared to the first filter. Because of its higher filtration precision, the second filter can intercept both larger and smaller particles, resulting in faster dirt buildup and clogging compared to the first filter.

[0027] In another scenario, the filtration level of the second filter can be lower than that of the first filter. That is, the first filter can filter smaller dirt particles, while the second filter can only filter larger dirt particles. This allows the second filter to be switched to for filtration after the first filter (main filter) becomes clogged (i.e., the first water flow channel becomes clogged), and the second filter is less prone to clogging.

[0028] The first or second filter screen can be, for example, a nylon filter screen. Nylon filter screens have high structural strength and can be directly rinsed with a water gun to remove filtered debris, making cleaning more convenient. Preferably, the nylon filter screen is a 180-mesh nylon filter screen, thus meeting the filtration requirement of removing particles as small as 91 μm, making the cleaning device 10 suitable for most filtration scenarios.

[0029] The first or second filter screen can be, for example, filter cotton, specifically, polyester fiber filter cotton. Polyester fiber filter cotton is made of polyester fibers, possessing high strength and corrosion resistance, making it suitable for various environments; its uniform fiber structure effectively filters out larger particulate impurities; simultaneously, polyester fiber filter cotton has a large dust holding capacity, long service life, and is economical and durable. Therefore, polyester fiber filter cotton has advantages such as low cost, high strength, corrosion resistance, large dust holding capacity, and long service life.

[0030] The above description of the materials of the first and second filter screens is merely an illustrative description, and any material that conforms to the technical principles of this application falls within the protection scope of this application.

[0031] The main body 100 also includes a water inlet and a water outlet. The water inlet can be located, for example, at the bottom of the main body 100 (i.e., Figure 1 (Lower side of the main body 100), the water outlet can be located, for example, at the top of the main body 100 (i.e., the lower side of the main body 100). Figure 1 (On the upper side of the main body 100). The aforementioned water pump 110 can be installed, for example, near the water inlet, or as follows: Figure 1 The setting shown is located near the water outlet.

[0032] In one scenario, the water pump 110 inside the robot 10 draws the liquid to be filtered from the pool into the first filter assembly 120 or the second filter assembly 130 through the inlet for filtration, thereby removing impurities from the pool and cleaning it. For example, the water pump 110 drives the dirty liquid in the pool to flow in through the inlet and through the first filter assembly 120. The dirt is trapped in the first filter assembly 120, and the filtered liquid is discharged from the outlet. The flow path of the liquid flowing into the main body, passing through the first filter assembly 120, and flowing in from the outlet is the first water flow channel. If the water flows through the second filter assembly 130 as described above, then the flow path of the liquid is the second water flow channel.

[0033] Understandably, as described above, the force generated by the water pump 110 driving the liquid in the pool to exit through the outlet can provide the robot 10 with a reaction force in the opposite direction to the discharge. When the outlet is located on top of the robot, this reaction force can increase the normal pressure of the robot 10 relative to the contact surface. According to the friction formula f=μF... N By increasing the positive pressure, the friction between the bottom of the robot 10 and the contact surface can be increased. If the robot 10 is located on the pool wall, and the sum of the increased upward vertical friction and the buoyancy of the robot 10 equals the weight of the robot 10, then the robot 10 will not slide down or fall off the pool wall, and can smoothly clean the pool wall or move along the pool wall to the water surface.

[0034] The second water flow channel can be opened or closed. When the second water flow channel is opened, the robot 10 can filter dirt using the second filter assembly 130. When the second water flow channel is closed, liquid cannot flow into the second filter assembly 130 from the inlet. For example, the opening and closing of the second water flow channel can be accomplished by a valve, which will be described in detail below.

[0035] For example, robot 10 first uses the first filter assembly 120 to filter dirt in the pool, that is, it first opens the first water flow channel to filter the dirt. As dirt accumulates in the first filter assembly 120, the first water flow channel may become blocked, for example, because most of the mesh of the first filter screen is blocked by dirt.

[0036] Specifically, because the mesh of the first filter screen is blocked by dirt, water cannot smoothly enter the first water flow channel and flow out from the outlet. The low-pressure area generated by the operation of the water pump 110 cannot be filled with water, causing the water pump 110 to lose suction and affecting the cleaning operation of the robot 10. Therefore, if the first water flow channel becomes blocked, i.e., the first water flow channel is passively closed, the second water flow channel can be opened, allowing the robot 10 to continue cleaning the pool using the second filter component 130, or to perform movement actions such as climbing walls, thus improving the cleaning efficiency and operational stability of the robot 10.

[0037] It is worth noting that the filtration level of the second filter component 130 mentioned above is set to be higher than that of the first filter component 120. This makes the first filter component 120 less prone to clogging. Ideally, the first filter component 120 can handle the main cleaning tasks in the pool, i.e., it can complete the main cleaning of the pool. If the first filter component 120 becomes clogged, activating the second filter component 130 allows the robot 10 to perform a second, more thorough cleaning of the pool after cleaning larger debris, thus improving the cleaning effect of the robot 10.

[0038] The second water flow channel is closed when the first water flow channel is not blocked.

[0039] In one scenario, only one of the first and second water flow channels is open at any given time. If the first water flow channel is not blocked (i.e., it is open), the second water flow channel is closed. The first and second water flow channels do not need to be open simultaneously. Understandably, if both the first and second filter components are blocked during the cleaning process, the robot 10 will be completely unable to clean or move properly. It is worth noting that the main purpose of closing the second water flow channel is to prevent dirty liquid from entering the second filter component 130, thus avoiding blockage of the second water flow channel due to blockage of the second filter component 130.

[0040] For example, when robot 10 is cleaning the pool wall, both the first and second water flow channels are open. After a period of cleaning, if both water flow channels become blocked, robot 10 may lose the friction generated by the reaction force of the liquid flow, as mentioned above, and fall to the bottom of the pool, causing damage to robot 10 or the pool bottom. Therefore, the second water flow channel serves only as a backup or emergency water flow channel, ensuring the normal operation of robot 10 in the event of a blockage in the first water flow channel.

[0041] Understandably, if possible, the first water flow channel and the second water flow channel can be connected simultaneously, such as when the pool is significantly less dirty and there is no need to mount the pool on the wall.

[0042] The automatic water tank cleaning device 10 also includes a first valve, which can control the opening or closing of the second water flow channel.

[0043] Figure 2 and Figure 3 Examples of the first valve are shown below. Figure 2 As shown, the first valve 201 is located in the second water flow channel and is only used to open or close the second water flow channel. For example, the first valve is located at the inlet of the second filter assembly; in other words, the first valve 201 does not control the opening or closing of the first water flow channel. Figure 3 As shown, the first valve 301 is located in the first water flow channel (i.e. Figure 3 The left-hand channel shown) and the second water flow channel (i.e. Figure 3 At a predetermined position between the right-hand channel shown (e.g., the junction of the two water flow channels), and the first valve 301 can control the opening or closing of the first and second water flow channels (e.g., the first valve 301 can switch between the two water flow channels). For example, as shown... Figure 3 As shown, when the first valve 301 closes the second water flow channel, the first water flow channel is open; when the first valve 301 closes the first water flow channel, the second water flow channel is open.

[0044] Specifically, the opening and closing of the second water flow channel is controlled by the first valve 201. In one scenario, the first valve may be an electrically controlled valve, which can be controlled to open or close as needed to open or close the second water flow channel. Specifically, when a blockage is detected in the first water flow channel, the first valve is opened, and the second water flow channel is opened. When the first water flow channel is functioning normally, the first valve can be controlled to open or close as needed.

[0045] In another scenario, the first valve 201 can be, for example, a throttle valve. The throttle valve controls the resistance of the second water flow channel by changing the cross-sectional area of ​​the water flow channel, thereby controlling the opening or closing of the second water flow channel. For instance, if the flow resistance of the second water flow channel is increased, the pump 110 needs to provide a larger pressure to push the liquid into the second water flow channel. If the pump 110 cannot provide this pressure, the liquid will automatically flow to the first water flow channel with lower resistance, indirectly causing the second water flow channel to be closed.

[0046] In another scenario, the first valve 201 may be a switching valve, such as a ball valve, gate valve, or shut-off valve. The switching valve can, for example, physically obstruct the flow of liquid into the second water flow channel by physically moving its valve core, thus physically closing the second water flow channel and preventing the second filter assembly 130 from filtering the liquid.

[0047] In another scenario, the first valve 201 may be, for example, a three-way switching valve. The three-way switching valve can, for example, control the flow rate of the liquid in the second water flow channel; that is, the three-way switching valve can control the opening or closing of the second water flow channel. It is worth noting that the three-way switching valve can also simultaneously control the flow rate of both the first and second water flow channels.

[0048] The above description of the first valve is not an exhaustive list; any valve capable of controlling the opening or closing of the second water flow channel is within the scope of protection of this application.

[0049] The first valve may be located, for example, at the second water flow channel between the water inlet and the second filter assembly 130, or the first valve may be located at the second water flow channel between the water outlet and the second filter assembly 130.

[0050] Specifically, in the case where the first valve is an electrically controlled valve, a switching valve, a three-way switching valve, or a throttle valve as described above, the first valve may be located, for example, at the second water flow channel between the water inlet and the second filter assembly 130, to prevent liquid from entering the second filter assembly 130, and to ensure that the second filter assembly 130 stops filtering and effectively closes the second water flow channel.

[0051] In the case where the first valve is a throttle valve and the water pump 110 is located near the outlet, the first valve can also be located in the second water flow channel between the outlet and the second filter assembly 130. Since the throttle valve closes the second water flow channel by increasing the water resistance, if the water resistance of the second water flow channel is increased, the liquid can spontaneously flow to the first water flow channel with lower water resistance, thereby achieving the purpose of closing the second water flow channel.

[0052] Those skilled in the art can select the specific location of the first valve according to the actual situation, as long as the technical principle of this application can be achieved.

[0053] The water inlet includes a first sub-inlet and a second sub-inlet, wherein the first sub-inlet is connected to the first water flow channel, and the second sub-inlet is connected to the second water flow channel.

[0054] In one scenario, the water inlet includes a first sub-inlet and a second sub-inlet. Liquid can be driven by a water pump 110 to enter the first water flow channel through the first sub-inlet and then be filtered by the first filter assembly 120. Liquid can also be driven by the water pump 110 to enter the second water flow channel through the second sub-inlet and then be filtered by the second filter assembly 130. Therefore, in the case where the first valve is located in the second water flow channel between the water inlet and the second filter assembly 130, the first valve can, for example, be located between the second sub-inlet and the second filter assembly 130.

[0055] Setting corresponding inlets for the first and second water flow channels can enhance the accuracy of controlling the opening and closing of the first and second water flow channels. It can also prevent the robot 10 from failing to activate emergency measures (i.e., opening the second water flow channel) when only a single inlet is set and the inlet is blocked, thus preventing the robot 10 from moving or cleaning normally.

[0056] Setting up a first sub-inlet and a second sub-inlet can further improve the stability and cleaning efficiency of the robot 10.

[0057] The automatic water tank cleaning device 10 also includes, for example, a first sensor and a controller, wherein the controller can determine whether the first water flow channel is blocked by the first sensor, and in the event of a blockage, the controller can control the opening or closing of the second water flow channel.

[0058] In one scenario, the robot 10 may further include a controller and a first sensor. The controller and first sensor may be housed in a sealed environment within the main body 100 to prevent short circuits or other malfunctions caused by contact with water. The controller may be equipped with control circuitry such as a microprocessor, digital signal processor (DSP), or microcontroller. The controller may determine whether the first water flow channel is blocked based on measurement data from the first sensor.

[0059] Specifically, the first sensor may be, for example, a pressure sensor or a flow sensor.

[0060] If the first sensor is a pressure sensor, it can be installed, for example, between the first filter assembly 120 and the water pump 110. If the first filter assembly 120 becomes clogged, the action of the water pump 110 will significantly increase the negative pressure between the first filter assembly 120 and the water pump 110. If the controller determines that the negative pressure data measured by the pressure sensor is greater than a predetermined pressure threshold, it further determines that the first water flow channel is clogged. If the controller determines that the negative pressure data measured by the pressure sensor is less than or equal to the predetermined pressure threshold, it further determines that the first water flow channel is not clogged.

[0061] If the first sensor is a pressure sensor, a pressure sensor can be installed on each side of the first filter assembly 120. If the first filter assembly 120 becomes clogged, water flow will be blocked at the inlet of the first filter assembly 120, increasing the pressure difference across the first filter assembly 102. Therefore, the controller can, for example, calculate the difference between the pressure values ​​measured by the two pressure sensors. If the controller determines that the pressure difference is greater than a predetermined pressure difference threshold, it further determines that the first water flow channel is clogged. If the controller determines that the pressure difference is less than or equal to the predetermined pressure difference threshold, it further determines that the first water flow channel is not clogged.

[0062] If the first sensor is a flow sensor, specifically, it could be a turbine flow sensor, an ultrasonic flow sensor, or a thermal flow sensor. The flow sensor can be positioned anywhere in the first water flow channel. If the controller determines that the data measured by the flow sensor is less than a predetermined flow threshold, it further determines that the first water flow channel is blocked. If the controller determines that the data measured by the flow sensor is greater than or equal to the predetermined flow threshold, it further determines that the first water flow channel is not blocked.

[0063] If the controller determines that the first water flow channel is blocked, as described above, it will control the second water flow channel to open. For example, the controller can control the second water flow channel to open by controlling the first valve mentioned above. The controller can be electrically connected to the first valve, for example. If the controller determines that the first water flow channel is not blocked, it can also control the second water flow channel to close. The method of controlling the opening or closing of the second water flow channel has been described in detail above and will not be repeated here.

[0064] The above description of the first sensor is not an exhaustive list. Any type of first sensor that can realize the technical principles of this application falls within the protection scope of this application.

[0065] The automatic water tank cleaning device 10 also includes, for example, a controller, wherein the controller is able to determine whether the first water flow channel is blocked based on the rotational speed of the water pump 110, and, in the event of a blockage, the controller is able to control the opening or closing of the second water flow channel.

[0066] The controller can also determine whether the first water flow channel is blocked based on the rotational speed of the water pump 110. Specifically, the rotational speed of the water pump 110 can be measured, for example, using a Hall sensor or back EMF detection technology.

[0067] In the case of measuring the rotational speed of water pump 110 using Hall sensors, the rotor of water pump 110 motor is equipped with magnets, and one or more Hall sensors are integrated on the stator board. Each time the rotor rotates once, the magnetic poles sweep past the Hall sensors, generating one or more digital pulse signals. The controller can accurately calculate the rotational speed by calculating the number of pulses received per unit time.

[0068] In the case of measuring the rotational speed of water pump 110 using back electromotive force (EMF) detection technology, if the brushless DC motor of water pump 110 rotates, its unenergized coils will generate a voltage due to cutting the magnetic field; this voltage is called back EMF. The controller can detect the zero-crossing point of this back EMF by monitoring the voltage on the motor coils. The controller can then calculate the motor's rotational speed by calculating the time interval between consecutive zero-crossing points.

[0069] If the first water flow channel becomes blocked, the water flow resistance increases, consequently increasing the load on the water pump 110. The motor must overcome greater resistance to maintain the speed of the water pump 110. However, since the input voltage is fixed, it cannot overcome the greater resistance, and the speed of the water pump 110 will be forced to decrease. Therefore, if the controller determines that the speed of the water pump 110 is lower than a predetermined speed threshold, the controller determines that the first water flow channel is blocked and then controls the second water flow channel to open. If the controller determines that the speed of the water pump 110 is higher than or equal to the predetermined speed threshold, the controller determines that the first water flow channel is not blocked, and the controller can, for example, control the second water flow channel to close.

[0070] The above-described method for measuring the rotational speed of the water pump 110 is merely an illustrative description, and this application does not limit it in any way, as long as the technical principle of this application can be achieved.

[0071] The automatic water tank cleaning device 10 also includes a second valve, which can control the opening or closing of the first water flow channel.

[0072] Robot 10 may also include a second valve, which may be an electrically controlled valve, a throttle valve, a switching valve, or a three-way switching valve. The methods for opening and closing the water flow channel by the above-mentioned valves have been described in detail above and will not be repeated here.

[0073] For example, when robot 10 receives a cleaning instruction sent by a user terminal, the second valve controls the first water flow channel to open, so that the first filter component filters the liquid.

[0074] If a gap remains in the first water flow channel even when it is blocked, the water pump 110 will drive liquid into the first water flow channel through this gap. This means that the power of the water pump 110 cannot be fully used to drive the liquid into the second water flow channel, reducing the cleaning efficiency of the robot 10. To avoid this situation, if the first water flow channel becomes blocked, the second valve controls the first water flow channel to close. It is understood that both the first and second valves can be controlled in a unified and coordinated manner by a controller to achieve cooperation between the two valves. The principle of cooperative control of the two valves has already been explained above and will not be repeated here.

[0075] Setting up a second valve can improve the reliability, intelligence, and user experience of robot 10.

[0076] The main body 100 may include, for example, a first receiving compartment for accommodating a first filter assembly 120 and a second receiving compartment for accommodating a second filter assembly 130.

[0077] The main body 100 may also include a first receiving chamber, which houses the first filter assembly 120. The first receiving chamber provides support and protection for the first filter assembly 120, preventing damage from external impacts that could affect the cleaning operation of the robot 10. The shape of the first receiving chamber may be adapted to fit the first filter assembly 120. The first receiving chamber may also be equipped with a guiding structure to direct liquid into the first filter assembly 120 from the inlet, preventing the liquid from contacting other components inside the main body 100 and causing damage to them.

[0078] The main body 100 also includes a second receiving compartment for accommodating the second filter assembly 130. The second receiving compartment is similar to the first receiving compartment, as described above, and will not be repeated here.

[0079] The automatic water tank cleaning device 10 provided in this application has two filter components, which allows the automatic water tank cleaning device 10 to use the other filter component when one filter component becomes clogged. The automatic water tank cleaning device 10 can maintain stable operation by relying on the suction provided by the other filter component, thereby improving the cleaning efficiency and effect of the automatic water tank cleaning device 10.

[0080] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0081] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0082] In this application, unless otherwise stated, directional terms such as "up" and "down" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" are generally used in relation to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this application.

[0083] The above description is merely an exemplary embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope described in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An automatic water tank cleaning device (10), wherein, include: The main body (100), water pump (110), first filter assembly (120) and second filter assembly (130); The main body (100) includes an inlet and an outlet, and there is a first water flow channel and a second water flow channel between the inlet and the outlet. The first water flow channel passes through a first filter assembly (120), and the second water flow channel passes through a second filter assembly (130). The water pump (110) can guide water flow into the first water flow channel and / or the second water flow channel. The second water flow channel can be opened or closed, wherein the second water flow channel is opened when the first water flow channel is blocked.

2. The automatic water tank cleaning device (10) according to claim 1, wherein, The second water flow channel is closed when the first water flow channel is not blocked.

3. The automatic water tank cleaning device (10) according to claim 1, wherein, The automatic water tank cleaning device (10) also includes a first valve, which can control the opening or closing of the second water flow channel.

4. The automatic water tank cleaning device (10) according to claim 3, wherein, The first valve is located at the second water flow channel between the water inlet and the second filter assembly (130), or the first valve is located at the second water flow channel between the water outlet and the second filter assembly (130).

5. The automatic water tank cleaning device (10) according to claim 1, wherein, The water inlet includes a first sub-inlet and a second sub-inlet, wherein the first sub-inlet is connected to the first water flow channel, and the second sub-inlet is connected to the second water flow channel.

6. The automatic water tank cleaning device (10) according to claim 1 further includes a first sensor and a controller, wherein, The controller can determine whether the first water flow channel is blocked by the first sensor, and if a blockage occurs, the controller can control the opening or closing of the second water flow channel.

7. The automatic water tank cleaning device (10) according to claim 1 further includes a controller, wherein, The controller can determine whether the first water flow channel is blocked based on the rotational speed of the water pump (110), and in the event of a blockage, the controller can control the opening or closing of the second water flow channel.

8. The automatic water tank cleaning device (10) according to claim 1, wherein, The first filter assembly (120) includes a first filter screen, and the second filter assembly (130) includes a second filter screen. The filtration level of the second filter screen is different from that of the first filter screen, wherein the filtration level of the second filter screen is higher than that of the first filter screen.

9. The automatic water tank cleaning device (10) according to claim 2, wherein, It also includes a second valve, which can control the opening or closing of the first water flow channel.

10. The automatic water tank cleaning device (10) according to claim 1, wherein, The main body (100) also includes a first receiving compartment for receiving a first filter assembly (120) and a second receiving compartment for receiving a second filter assembly (130).

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