Double-layer filter screen filtering system of swimming pool cleaning robot

Abstract

The embodiment of the invention provides a swimming pool cleaning robot double-layer filter screen filtering system which comprises a fine filter screen frame and a coarse filter screen frame, the fine filter screen frame is arranged outside the coarse filter screen frame in a stacked mode, and the filtering precision of the fine filter screen frame is higher than that of the coarse filter screen frame; an opening is formed in the bottom of the fine filter screen frame, a water inlet is formed in the corresponding position of the coarse filter screen frame, and the water inlet protrudes into the coarse filter screen frame; a water inlet baffle is arranged at the top of the water inlet so as to be automatically closed when no water enters the water inlet, the water inlet is formed in the following positions that the distance between the water inlet and one side of the coarse filter screen frame is larger than the distance between the water inlet and the other side of the coarse filter screen frame, and the water inlet baffle is opened towards the side with the larger distance. According to the scheme, impurities in the swimming pool can be effectively filtered out.

Description

Technical Field

[0001] The present application relates to the technical field of swimming pool cleaning robots, and in particular to a double-layer filter screen filtration system for swimming pool cleaning robots. Background Art

[0002] A pool cleaning robot is a robot used to clean impurities in a swimming pool, and its filtration system is used to remove suspended matter and larger impurities in the swimming pool. However, in actual applications, how to effectively set up the robot's filtration system to effectively filter impurities in the swimming pool is a problem faced by technicians. Summary of the invention

[0003] In view of this, an embodiment of the present disclosure provides a double-layer filter system for a swimming pool cleaning robot, which at least partially solves the problems existing in the prior art.

[0004] The present invention discloses a double-layer filter system for a swimming pool cleaning robot, comprising a fine filter frame and a coarse filter frame.

[0005] The fine filter frame is stacked outside the coarse filter frame, and the filtering accuracy of the fine filter frame is higher than that of the coarse filter frame;

[0006] The bottom of the fine filter frame is provided with an opening, and the corresponding position of the coarse filter frame is provided with a water inlet, and the water inlet protrudes into the interior of the coarse filter frame; and

[0007] The top of the water inlet is provided with a water inlet baffle to automatically close when there is no water inlet.

[0008] The water inlet is arranged at the following position: the distance between the water inlet and one side of the coarse filter frame is greater than the distance between the water inlet and the other side of the coarse filter frame, and the water inlet baffle opens toward the side with the greater distance.

[0009] According to one embodiment, the fine filter frame and the coarse filter frame are frame structures, and the filters are arranged between the frames.

[0010] According to one embodiment, a raised structure is provided at the bottom of the frame structure to facilitate drainage.

[0011] According to one embodiment, the filter screen is arranged on the surrounding side walls and the bottom rear side of the fine filter screen frame and the coarse filter screen frame, and the bottom rear side is the side with a larger distance to which the water inlet baffle faces.

[0012] According to one embodiment, the tops of the fine filter frame and the coarse filter frame are open to facilitate observation of blockage conditions.

[0013] According to one embodiment, a sealing ring is provided at the top opening edge of the coarse filter frame to fit with the top transparent cover of the robot to prevent particles therein from leaking out.

[0014] According to one embodiment, the fine filter frame and the coarse filter frame are fixed by snap fastening.

[0015] According to one embodiment, a handle is provided on the side of the coarse filter frame, and a positioning device is provided on the outside to facilitate installation.

[0016] According to one embodiment, the protruding height of the water inlet is not less than 2 cm.

[0017] According to one embodiment, the height of the effective filtering area of ​​the fine filter frame is higher than the height of the effective filtering area of ​​the coarse filter frame.

[0018] The disclosed embodiment provides a double-layer filter screen filtration system for a swimming pool cleaning robot, comprising a fine filter screen frame and a coarse filter screen frame, wherein the fine filter screen frame is stacked and arranged outside the coarse filter screen frame, and the filtering accuracy of the fine filter screen frame is higher than that of the coarse filter screen frame; an opening is arranged at the bottom of the fine filter screen frame, and a water inlet is arranged at a corresponding position of the coarse filter screen frame, and the water inlet protrudes into the interior of the coarse filter screen frame; and a water inlet baffle is arranged at the top of the water inlet to automatically close when no water enters, wherein the water inlet is arranged at the following position: the distance between the water inlet and one side of the coarse filter screen frame is greater than the distance between the water inlet and the other side of the coarse filter screen frame, and the water inlet baffle opens toward the side with the greater distance. Through the scheme of the disclosed embodiment, impurities in the swimming pool can be effectively filtered. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 The overall structure of the swimming pool cleaning robot for this application;

[0021] Figure 2 This is a schematic diagram of the structure of the double-layer filter system of this application;

[0022] Figure 3 A top view of the coarse filter frame of this application;

[0023] Figure 4 This is a three-dimensional diagram of the coarse filter frame of this application.

[0024] In the figure: 100, swimming pool cleaning robot; 110, shell; 120, flow channel structure; 130, filtering structure; 140, drainage device; 150, driving mechanism; 160, walking mechanism; 170, cleaning brush; 1, fine filter frame; 2, coarse filter frame; 11, opening; 21, water inlet; 22, water inlet baffle; 3, filter; 23, sealing ring; 24, handle; 25, positioning device. DETAILED DESCRIPTION

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0026] First, refer to Figure 1 , describes the overall structure of the swimming pool cleaning robot 100 of the present application. Figure 1 As shown, the swimming pool cleaning robot of the present application includes a housing 110 , a flow channel structure 120 , a filtering structure 130 , a drainage device 140 , a driving mechanism 150 , a walking mechanism 160 and a roller brush 170 .

[0027] The housing 110 is the main structure of the swimming pool cleaning robot, and a flow channel structure 120 is arranged inside the housing. The flow channel structure 120 is a water flow channel for water to flow. A filter structure 130 is arranged in the flow channel structure 120 to filter the water flowing through the flow channel structure 120, wherein a drainage device 140 is also arranged in the flow channel structure 120, and provides power to discharge the filtered water out of the flow channel structure 120, thereby filtering the water in the swimming pool. The swimming pool cleaning robot of the present application is provided with a roller brush 170, which can rotate to clean the bottom or wall of the pool, and the driving mechanism 150 is responsible for driving the walking mechanism 160 and the roller brush 170 to clean the swimming pool during walking.

[0028] In the present application, the shell 110 can be made of plastic, and a cavity is set inside to accommodate a filtering structure 130 such as a filter net. The impurities cleaned by the roller brush 170 (not shown) enter the flow channel structure 120 through, for example, a water inlet at the bottom of the swimming pool cleaning robot, and then filtered through the filter net, so that the filtered water is discharged from the top of the swimming pool cleaning robot 100 by a drainage device 140 such as a spiral mechanism, while the impurities and the like are retained in the filter net to achieve the cleaning operation of the swimming pool.

[0029] Next, refer to Figure 2 , specifically describing the filtering structure 130 of the present application, the filtering structure 130 is a double-layer filter screen filtering system, and the double-layer filter screen filtering system includes a fine filter screen frame 1 and a coarse filter screen frame 2.

[0030] Specifically, the fine filter frame 1 is stacked outside the coarse filter frame 2, and the filtering accuracy of the fine filter frame 1 is higher than that of the coarse filter frame 2, ensuring a multi-layered and multi-level filtering effect. In another embodiment, the fine filter frame 1 can partially or completely surround the coarse filter frame 2, that is, the fine filter frame 1 at least partially surrounds the coarse filter frame 2.

[0031] In the application, the bottom of the fine filter frame 1 is provided with an opening 11, and the corresponding position of the coarse filter frame 2 is provided with a water inlet 21, which protrudes into the interior of the coarse filter frame 2 to better guide the water flow into the coarse filter frame 2. In addition, a water inlet baffle 22 is provided on the top of the water inlet 21, which can automatically close when there is no water flow to prevent the backflow of external impurities.

[0032] Specifically, the opening 11 at the bottom of the fine filter frame 1 is an opening for water to flow in, which is, for example, rectangular and is arranged at the bottom of the fine filter frame 1. Since the filtration structure 130 of the present application adopts a double-layer filter system, a water inlet 21 is provided at the corresponding position of the coarse filter frame 2. When the fine filter frame 1 and the coarse filter frame 2 are installed in place, the opening 11 overlaps with the water inlet 21, so that water enters the coarse filter frame 2 through the water inlet 21, thereby performing double-layer filtration. In addition, in order to prevent impurities in the fine filter frame 1 from flowing back out of the water inlet 21 during the water discharge process (for example, entering a shallow area or artificially raising the water surface), a water inlet baffle 22 is provided at the top of the water inlet 21 of the present application (see Figure 3 ) to prevent water from flowing out through the water inlet 21.

[0033] In the present application, the water inlet baffle 22 is arranged in such a way that it automatically closes when there is no water flow. Specifically, the water inlet baffle 22 can be hinged to the top of the water inlet 21, and the width of one side of its opening exceeds the width of the opening of the water inlet 21, so that when there is no water flow, the water inlet baffle 22 can completely cover the top of the water inlet 21, so that even if there is water in the coarse filter frame 2, it will not flow out of the water inlet 21.

[0034] Specifically, Figure 3 As shown, one side of the water inlet baffle 22 can be hinged to the top side of the water inlet 21, so that when the suction force provided by the drainage device 140 is applied, water pushes the water inlet baffle 22 upward from the water inlet 21 to allow water to enter the interior of the coarse filter frame 2. In the present application, the water inlet baffle 22 can be made of a soft material such as rubber, and when the power is turned off, the water inlet baffle 22 closes the water inlet 21 due to the action of gravity.

[0035] In addition, in the present application, the water inlet 21 is not arranged in the middle of the coarse filter frame 2, but is closer to one side thereof. Specifically, in the present application, the water inlet 21 is arranged closer to the position of the roller brush 170, and more specifically, the water inlet 21 is arranged closer to the position of the drainage device 140, so that the flow of the water can be reduced, thereby increasing the suction force to filter the impurities in the water more effectively. Specifically, for example, when the roller brush 170 is arranged at the bottom of the front side of the robot 100, the water inlet 21 is arranged closer to the front side of the coarse filter frame 2, and the drainage device 140 is also arranged closer to the front side of the robot 100, so that the overall flow can be reduced, thereby better utilizing the drainage device 140, that is, in the present application, the roller brush 170 and the drainage device 140 are arranged on the same side relative to the filtering structure 130, and the water inlet 21 is arranged on one side of the coarse filter frame 2 close to the roller brush 170 and the drainage device 140, so as to improve the drainage efficiency of the robot 100.

[0036] In this case, from the perspective of reducing the flow of water, the opening direction of the water inlet baffle 22 should also be toward the side of the roller brush 170 and the drainage device 140, so as to form a smoother flow channel. However, in this application, the water inlet baffle 22 is set in the opposite direction, specifically, it is set to open toward the rear of the robot 100, that is, toward the side with a larger distance in the coarse filter frame 2. For example, in the case where the drainage device 140 is set at the front end of the robot relative to the filtering structure, the water inlet 21 is set closer to the front end in the coarse filter frame 2, and the distance from the rear end is greater. In this case, the opening of the water inlet baffle 22 is toward the rear end. This is because when the robot is out of the water or walking to the foreshore, the robot will tilt, and the tilted body at this time makes it easier for the water inlet baffle 22 toward the rear end to close, thereby preventing water from flowing out of the robot through the water inlet baffle 22 without being filtered. If it is opened toward the front end, the gravity may cause impurities to flow out of the water inlet 21.

[0037] In the present application, the fine filter frame 1 and the coarse filter frame 2 in the filter structure can be made of filter materials with different apertures, and the filter aperture of the fine filter frame 1 is smaller than the aperture of the coarse filter frame 2. The opening 11 at the bottom of the fine filter frame 1 is manufactured by cutting technology to ensure docking with the water inlet 21 of the coarse filter frame 2. The protruding design of the water inlet 21 allows the water flow to smoothly enter the coarse filter frame 2, and the water inlet baffle 22 is made of elastic material, which can be opened and closed freely under the action of external force, and automatically closed when there is no water flow.

[0038] The double-layer filter screen filtration system solves the problem of effective filtration of impurities of different particle sizes in the swimming pool through a multi-level filtration structure. Specifically, the coarse filter frame 2 first intercepts large particles of debris to prevent these large particles from directly entering the fine filter frame 1 and causing blockage. The high filtration accuracy of the fine filter frame 1 can further remove tiny particles and suspended matter in the water to ensure clean water quality. In addition, the design of the water inlet baffle 22 enables the entire filtration system to effectively prevent the backflow of filtered water when it stops running, thereby avoiding secondary pollution and improving the operating efficiency and cleaning effect of the entire system. In this way, the filtration system significantly improves the effect of the swimming pool cleaning robot on the purification of swimming pool water quality.

[0039] In one embodiment, Figure 4As shown, the fine filter frame 1 and the coarse filter frame 2 of the double-layer filter screen filtration system of a swimming pool cleaning robot of the present application are both designed with a frame structure. These frame structures not only provide support, but also ensure that the filter screen 3 can be effectively installed and maintain its shape and strength. The frame structure design of the fine filter screen frame 1 and the coarse filter screen frame 2 ensures stability and durability during the cleaning process. In addition, the filter screen 3 is arranged between these frames to form a multi-level filtering structure. This double-layer design can efficiently filter the swimming pool water at different stages to ensure the cleanliness of the water quality.

[0040] Specifically, the fine filter frame 1 and the coarse filter frame 2 are made of metal or high-strength plastic, respectively, to ensure sufficient mechanical strength and corrosion resistance. The frame is usually rectangular or circular, and forms a plurality of filter intervals, and the filter 3 is arranged in these filter intervals. The specific shape can be adjusted according to the actual size and needs of the robot. The filter 3 is fixed between the frames and can be reliably connected by snaps, screws or other fasteners such as adhesives. For example, a plurality of grooves or protrusions may be provided on the inner side of the frame to accommodate and fix the filter 3 to ensure that it will not loosen or fall off during operation. Specifically, the spacing between the fine filter and the coarse filter can be set to 2-7 mm, for example, so as to achieve effective filtering between different levels, thereby achieving the best filtering effect.

[0041] In one embodiment, a raised structure is provided at the bottom of the frame structure of a double-layer filter screen filtration system of a swimming pool cleaning robot of the present application, and the raised structure is used for draining water, thereby ensuring that the filtration system has space for draining water in both working and non-working states. For example, a raised structure can be provided at the bottom of the coarse filter screen frame 2, so that when the coarse filter screen frame 2 is installed inside the fine filter screen frame 1, a certain gap is formed between the two, so that it is convenient for water to be filtered out from the coarse filter screen frame 2. Specifically, the raised structures can be evenly distributed at the bottom of the entire frame structure, and their height can be adjusted according to the needs in practical applications. The design of these raised structures can not only improve the overall stability of the filtration system, but also effectively prevent water from accumulating at the bottom of the frame structure, reducing the growth of bacteria and other microorganisms.

[0042] For example, the bottom of the frame with a raised structure can be manufactured by injection molding. These raised structures can be designed as a plurality of evenly arranged cylindrical protrusions or grid-like ridges to ensure that they form an integrated structure with the rest of the frame structure, thereby ensuring strength while also increasing its reliability and durability in practical applications. Specifically, the height of the protrusion can be determined based on the characteristics of the actual filter screen 3 material and the desired drainage effect, usually between 1 and 5 mm. This design can not only effectively achieve the drainage function, but also can be easily disassembled and cleaned, further improving the maintainability and service life of the system.

[0043] like Figure 3 As shown, in one embodiment, a filter screen 3 of a double-layer filter screen filtering system of a swimming pool cleaning robot of the present application is installed on the surrounding side walls and the bottom rear side of the fine filter screen frame 1 and the coarse filter screen frame 2. Specifically, the installation position of the filter screen 3 not only covers the side between the coarse filter screen frame 2 and the fine filter screen frame 1, but also extends to the bottom rear side of them, which is located on the side to which the water inlet baffle 22 faces. This arrangement ensures that the water flow passes through multiple layers of filtration, thereby improving the overall cleaning efficiency of the filter screen 3. More specifically, since the rear of the coarse filter screen frame 2 and the fine filter screen frame 1 will be in a lower position during the process of the robot exiting the water, by hand or gradually walking to the foreshore area, the filter screen 3 is arranged at the bottom rear of the coarse filter screen frame 2 and the fine filter screen frame 1, which can further enhance the drainage performance. In this case, since the water inlet 21 is arranged near the front end, sufficient space is left for the filter screen 3 at the bottom of the rear end.

[0044] In one embodiment, Figure 2 As shown, the fine filter frame 1 and the coarse filter frame 2 of the double-layer filter system of a swimming pool cleaning robot of the present application both have a top opening design. This design makes it easy for the user to observe the blockage of the filter 3, so as to clean and maintain it in time. Specifically, the fine filter frame 1 and the coarse filter frame 2 are respectively provided with top openings, and these openings are convenient for regular inspection. The opening design not only improves the convenience of maintenance, but also allows the working status of the filter 3 to be intuitively understood without disassembling the entire filtration system.

[0045] In one embodiment, Figure 4 As shown, a sealing ring 23 is provided at the top opening edge of the coarse filter frame 2 of the double-layer filter filter system of a swimming pool cleaning robot of the present application, which is used to fit tightly with the top transparent cover of the robot 100. This design can effectively prevent the intercepted particulate matter from leaking out from the gap between the coarse filter frame 2 and the cover during the operation of the filter 3, thereby keeping the inside of the machine clean. The design of the sealing ring 23 not only improves the sealing performance of the system, but also ensures the efficient operation of the filtration system.

[0046] In actual applications, the sealing ring 23 is installed on the top edge of the coarse filter frame 2 to form a complete annular structure around the entire top opening. Specifically, the sealing ring 23 can be made of a flexible material, such as silicone or rubber, to ensure that it can provide a good sealing effect when it contacts the top transparent cover. For example, the sealing ring 23 can be fixed to the top edge of the coarse filter frame 2 by bonding or embedding. In addition, the top transparent cover is designed to be a shape and size that fits closely with the sealing ring 23, thereby ensuring that the sealing ring 23 can achieve the best sealing effect when the cover is closed. This installation method is simple and reliable, and is easy to produce and maintain.

[0047] In one embodiment, in a filtering structure of a double-layer filter screen filtering system of a swimming pool cleaning robot of the present application, the fine filter screen frame 1 and the coarse filter screen frame 2 are fixed by buckles (see Figure 2 The buckle on the side of the medium and fine filter frame 1). This fixing method not only ensures that the two filter frames 3 are firmly connected during cleaning, but also facilitates removal and replacement. The size design of the fine filter frame 1 and the coarse filter frame 2 allows them to fit perfectly, ensuring that water can flow smoothly during the filtering process without leaking unfiltered dirt.

[0048] In one embodiment, the fine filter frame 1 and the coarse filter frame 2 are fixedly connected by a buckle structure. The buckle is usually arranged at the edge of the fine filter frame 1 and matches the corresponding position of the coarse filter frame 2. When the coarse filter frame 2 is inserted into the fine filter frame 1, the buckle will automatically snap together so that the two are tightly connected. When disassembling, the buckle can be loosened by manually applying a certain force, which is convenient for users to clean or replace the filter 3. This buckle structure is simple and reliable, and can effectively prevent the coarse filter frame 2 from detaching from the fine filter frame 1 due to water pressure or other external forces during operation.

[0049] See also Figure 2 In one embodiment, a handle 24 is provided on the side of the coarse filter frame 2 in a double-layer filter system of a swimming pool cleaning robot of the present application, and a positioning device 25 is provided on the outside to facilitate installation. The setting of the handle 24 makes it more convenient for the operator to install or replace the coarse filter frame 2. The coarse filter frame 2 can be easily taken out or put in by simply lifting the handle 24. The design of the positioning device 25 ensures that the coarse filter frame 2 can be accurately positioned during the installation process, ensuring the alignment of the coarse filter frame 2 with the fine filter frame 1.

[0050] Specifically, the handle 24 can be made of corrosion-resistant material and firmly fixed to the side of the coarse filter frame 2, so as to facilitate the operator's grip. The positioning device 25 can be one or more herringbone, hook-shaped or other shaped protrusions, fixed at appropriate positions on the outside, so as to match with corresponding grooves or recesses on the fine filter frame 1 during installation. For example, the positioning device 25 can be a plastic part with a barb structure, embedded in the outside of the coarse filter frame 2, and matched with the groove on the fine filter frame 1 during installation, so as to ensure that the coarse filter frame 2 is firmly and correctly installed in place.

[0051] In one embodiment, a filtering structure of a double-layer filter screen filtering system of a swimming pool cleaning robot of the present application includes a protruding water inlet 21 with a height of not less than 2 cm. The unique design of the water inlet 21 is that the shape and size of its protruding portion can effectively increase the initial kinetic energy of the water flow entering the filtering system, thereby improving the efficiency of the subsequent filtering process. The water inlet 21 is usually located at the front end of the filtering system, and its protruding design helps to guide the pool water to the internal double-layer filter screen system, ensuring that the pool water flows smoothly and is filtered through the primary filter screen and the secondary filter screen. In addition, by setting a water inlet 21 of at least 2 cm, heavier substances such as gravel can be precipitated around it.

[0052] In one embodiment, a filtering structure of a double-layer filter screen filtering system of a swimming pool cleaning robot of the present application comprises a fine filter screen frame 1 and a coarse filter screen frame 2. Both the fine filter screen frame 1 and the coarse filter screen frame 2 have an effective filtering area, and specifically, the area of ​​the fine filter screen frame 1 and the coarse filter screen frame 2 where the filter screen 3 is provided is the effective filtering area of ​​the two. In the present application, the height of the effective filtering area of ​​the fine filter frame 1 is higher than the height of the effective filtering area of ​​the coarse filter frame 2. This design is mainly considered to improve the filtering capacity and reduce the clogging of impurities. More specifically, since the fine filter frame 1 is arranged on the outside of the coarse filter frame 2, and the two actually form a connecting mechanism through the filter 3, in order to filter the impurities floating on the top, the top area of ​​the coarse filter frame 2 is generally set as a plastic frame, and the impurities are blocked by the frame. At this time, water cannot pass through here to reach the drainage device 140. If the effective filtering height of the fine filter frame 1 is lower than the height of the effective filtering area of ​​the coarse filter frame 2, the water has to enter the drainage device 140 from a lower position, thereby forming an ascending flow channel, which requires additional power consumption and is not conducive to the discharge of water. Therefore, in the present application, by making the height of the effective filtering area of ​​the fine filter frame 1 higher than the height of the effective filtering area of ​​the coarse filter frame 2, a descending flow channel is formed between the fine filter frame 1 and the drainage device 140 as much as possible or the distance of the ascending flow channel is reduced as much as possible, so as to enhance the filtering effect.

[0053] In actual operation, when this device is used, the robot absorbs impurities and dirt in the water through the water inlet located at the bottom of the shell during movement. These water flows are guided to the filtration structure through the flow channel structure, specifically a double-layer filter system consisting of a coarse filter frame 2 and a fine filter frame 1 arranged from the inside to the outside. In the process of water flowing through the coarse filter frame 2, larger particles of impurities such as leaves and larger dirt are filtered out first, reducing the pressure of subsequent processing. Then, the water flow after preliminary filtration enters the fine filter frame 1, where the filtration accuracy is higher, and it can further intercept finer suspended particles and dirt, ensuring a higher degree of water cleanliness.

[0054] In order to ensure the stability and continuity of the system operation, the special design of the double-layer filter 3 frame plays a key role. The bottom of the fine filter frame 1 is provided with an opening 11, and the corresponding coarse filter frame 2 is provided with a water inlet 21 protruding into the interior, and an automatically opened and closed water inlet baffle 22 is installed on the top. When water flows in, the water inlet baffle 22 will be pushed open by the water flow, and the water flows smoothly into the filtration system through the water inlet 21. If there is no water flow, the water inlet baffle 22 will automatically reset and close to prevent foreign matter from flowing back into the system, ensuring the cleanliness and effective operation of the filtration system.

[0055] Finally, after being filtered by the double-layer filter 3 system, the clean water is discharged through the outlet through the negative pressure generated by the drainage device and returned to the swimming pool to achieve the purpose of water circulation purification. At the same time, the robot's built-in drive mechanism provides power to drive the walking mechanism and cleaning brush, allowing the robot to move freely on the bottom and wall of the pool, and cooperate with water flow extraction to achieve all-round cleaning work. During the entire working process, all components coordinate with each other and operate efficiently to ensure that the swimming pool always remains clear and clean.

[0056] The methods, programs, systems, devices, etc. of the embodiments of the present invention may be executed or implemented in a single or multiple networked computers, or may be practiced in a distributed computing environment. In the embodiments of this specification, in these distributed computing environments, tasks may be performed by remote processing devices connected via a communication network.

[0057] Those skilled in the art should understand that the embodiments of the present specification may be provided as methods, systems or computer program products. Therefore, those skilled in the art may imagine that the functional modules / units or controllers and related method steps described in the above embodiments may be implemented in software, hardware or a combination of software / hardware.

[0058] Unless explicitly stated, the actions or steps of the methods, programs, and embodiments of the present invention do not have to be performed in a specific order and can still achieve the desired results. In some implementations, multitasking and parallel processing are also possible or may be advantageous.

[0059] In this article, multiple embodiments of the present invention are described, but for the sake of brevity, the description of each embodiment is not exhaustive, and the same or similar features or parts between the embodiments may be omitted. In this article, "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" are meant to be applicable to at least one embodiment or example according to the present invention, but not all embodiments. The above terms do not necessarily mean to refer to the same embodiment or example. In the absence of contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0060] The exemplary systems and methods of the present invention have been specifically shown and described with reference to the above embodiments, which are merely examples of the best modes for implementing the present systems and methods. It will be appreciated by those skilled in the art that various changes may be made to the embodiments of the systems and methods described herein when implementing the present systems and / or methods without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A double-layer filter system for a swimming pool cleaning robot, characterized in that: The double-layer filter screen filtration system comprises a fine filter screen frame (1) and a coarse filter screen frame (2), wherein The fine filter frame (1) is stacked and arranged outside the coarse filter frame (2), and the filtering accuracy of the fine filter frame (1) is higher than the filtering accuracy of the coarse filter frame (2); The bottom of the fine filter frame (1) is provided with an opening (11), and a corresponding position of the coarse filter frame (2) is provided with a water inlet (21), and the water inlet (21) protrudes into the interior of the coarse filter frame (2); and The top of the water inlet (21) is provided with a water inlet baffle (22) to automatically close when no water is flowing in. The water inlet (21) is arranged at the following position: the distance between the water inlet (21) and one side of the coarse filter frame (2) is greater than the distance between the water inlet (21) and the other side of the coarse filter frame (2), and the water inlet baffle (22) opens toward the side with the greater distance.

2. The filtering structure according to claim 1, characterized in that: The fine filter frame (1) and the coarse filter frame (2) are frame structures, and the filter (3) is arranged between the frames.

3. The filtering structure according to claim 2, characterized in that: The bottom of the frame structure is provided with a raised structure to facilitate water drainage.

4. The filtering structure according to claim 2, characterized in that: The filter screen (3) is arranged on the surrounding side walls and the bottom rear side of the fine filter screen frame (1) and the coarse filter screen frame (2), and the bottom rear side is the side with a larger distance toward which the water inlet baffle (22) is directed.

5. The filtering structure according to claim 1, characterized in that: The tops of the fine filter frame (1) and the coarse filter frame (2) are open to facilitate observation of blockage conditions.

6. The filtering structure according to claim 5, characterized in that: A sealing ring (23) is provided at the top opening edge of the coarse filter frame (2) to fit with the top transparent cover of the robot to prevent particles therein from leaking out.

7. The filtering structure according to claim 1, characterized in that: The fine filter frame (1) and the coarse filter frame (2) are fixed by means of buckles.

8. The filtering structure according to claim 7, characterized in that: The coarse filter frame (2) is provided with a handle (24) on the side, and a positioning device (25) is provided on the outside to facilitate installation.

9. The filtering structure according to claim 1, characterized in that: The protruding height of the water inlet (21) is not less than 2 cm.

10. The filtering structure according to claim 1, characterized in that: The height of the effective filtering area of ​​the fine filter frame (1) is higher than the height of the effective filtering area of ​​the coarse filter frame (2).

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