A pool cleaning robot and a method of cleaning a trash can thereof

Abstract

This application provides a swimming pool cleaning robot and its cleaning method for a trash can, belonging to the technical field of swimming pool cleaning equipment. It includes: a main body; a suction motor; a trash can, comprising: a housing with a suction port and a discharge port, the suction motor being used to direct fluid from the suction port to the discharge port; a filter element disposed in the housing and located at the discharge port; and a cleaning mechanism for cleaning the filter element. The housing includes a first flow path from the suction port to the cleaning mechanism and a second flow path from the cleaning mechanism to the discharge port. The cleaning mechanism is located between the first and second flow paths. The first and second flow paths form a turning connection at the cleaning mechanism, causing the fluid to change its flow direction before flowing to the discharge port. The cleaning mechanism is configured to rotate under the propulsion of the fluid to clean the filter element. This application helps reduce the overall power consumption of the swimming pool cleaning robot.

Description

Technical Field

[0001] This application relates to the field of pool cleaning technology, and in particular to a pool cleaning robot and a method for cleaning its trash can. Background Technology

[0002] Existing pool cleaning robots are typically used to walk on the bottom or surface of pool walls, sucking up impurities, leaves, sediment, or fine particles from the water to clean the pool environment. In practical applications, pool cleaning robots usually include a suction system and a filtration system. The suction system generates negative pressure to draw in water containing impurities, while the filtration system filters the drawn-in water to remove impurities.

[0003] To ensure the equipment can stably perform its suction and filtration functions, existing pool cleaning robots typically require multiple motors. For example, some motors drive the suction device to create continuous suction, allowing dirty water to enter the equipment through the suction port; other motors drive the filtration and cleaning structure to clean the filter elements and prevent excessive buildup of impurities that could cause blockages.

[0004] However, in the above structure, the motors usually require high power to drive the cleaning mechanism to rotate smoothly, which increases the overall energy consumption of the equipment. Summary of the Invention

[0005] To overcome the problems existing in related technologies, this specification provides a method for cleaning a pool cleaning robot and its trash can, which helps to reduce the overall power consumption of the pool cleaning robot.

[0006] According to a first aspect of this application, a pool cleaning robot is provided, comprising: main body; A suction motor is located inside the main body; A trash can, disposed within the main body, comprises: The housing has an internal cavity and a suction port and a discharge port communicating with the internal cavity. The suction motor is used to make fluid flow from the suction port to the discharge port. A filter element, wherein the filter element is disposed in the housing and located at the drain outlet; A cleaning mechanism is provided inside the housing, and the cleaning mechanism is used to clean the filter element; The interior of the housing forms a flow path for guiding fluid flow, the flow path including a first flow path from the suction port to the cleaning mechanism, and a second flow path from the cleaning mechanism to the discharge port; The cleaning mechanism is located between the first flow path and the second flow path, and is disposed on one side of the filter element; The first flow path and the second flow path form a turning connection at the cleaning mechanism, so that the fluid changes its flow direction when it flows through the cleaning mechanism and then flows to the drain outlet. The cleaning mechanism is configured to rotate under the influence of fluid to clean the filter element.

[0007] The swimming pool cleaning robot provided in this application embodiment has a first flow path from the suction port to the cleaning mechanism and a second flow path from the cleaning mechanism to the discharge port inside the trash can. The first and second flow paths are connected at the cleaning mechanism to change direction, causing the fluid entering the trash can to change direction as it flows through the cleaning mechanism. Because the fluid generates a certain impact force and disturbance during the turning process, it can continuously push the cleaning mechanism, enabling the cleaning mechanism to rotate under the propulsion of the fluid.

[0008] Meanwhile, the cleaning mechanism is located on one side of the filter element. During rotation, it can scrape or disturb the impurities attached to the surface of the filter element, so that the dirt accumulated on the filter element is removed from the surface of the filter element in time, thereby reducing the possibility of the filter element becoming clogged.

[0009] Through the above structural design, this application can simultaneously achieve suction and filter cleaning functions by utilizing the fluid flow generated by the suction motor. This allows the cleaning mechanism to clean the filter without relying on an additional drive motor, thereby helping to reduce the overall power consumption and operating noise of the pool cleaning robot, while enhancing the cleaning effect on the trash can and enabling the robot to maintain stable suction performance during long-term operation.

[0010] In some exemplary embodiments of this application, the filter element is disposed over the drain outlet; The main body is provided with a water inlet and a water outlet. The water inlet is connected to the suction port, and the water outlet is connected to the discharge port. The suction motor is located between the water outlet and the discharge port. The orthographic projections of the water inlet and the cleaning mechanism onto the plane where the suction port is located both overlap with the suction port at least partially; The orthographic projection of the outlet onto the plane of the suction port is outside the suction port.

[0011] In this type of embodiment, by making the orthographic projections of the water inlet and the cleaning mechanism on the plane where the suction port is located at least partially overlap with the suction port, the fluid entering the body can enter the suction port in a more concentrated manner and flow to the area where the cleaning mechanism is located, thereby reducing the deviation of the fluid before entering the trash can, which is conducive to the fluid acting more directly on the cleaning mechanism to drive the cleaning mechanism to rotate.

[0012] By positioning the orthographic projection of the outlet onto the plane of the suction port outside the suction port, interference between the fluid discharge path and the suction path is reduced. This allows the fluid to form a separation path from the suction area to the discharge area inside the waste bin, which helps the fluid to continuously act on the cleaning mechanism and pass through the filter during the flow process, thereby maintaining a relatively stable filtration and cleaning process.

[0013] In some exemplary embodiments of this application, the filter element is at least partially arc-shaped, and the rotation trajectory of the end of the cleaning mechanism is adapted to the arc-shaped structure so that the cleaning mechanism cleans the filter element during rotation.

[0014] In this type of embodiment, since the rotation trajectory of the end of the cleaning mechanism is adapted to the arc-shaped structure, the cleaning mechanism can move along the arc-shaped surface of the filter element during rotation, so that the cleaning mechanism can continuously act on the surface of the filter element during the movement, causing the impurities attached to the surface of the filter element to be disturbed during rotation and gradually leave the surface of the filter element, thereby reducing the local accumulation of impurities on the surface of the filter element.

[0015] In some exemplary embodiments of this application, the cleaning mechanism includes: A rotating mechanism, comprising a rotating shaft and a blade unit, wherein the rotating mechanism is rotatably connected to the housing, and the blade unit is connected to the rotating shaft; A cleaning element is connected to the rotating shaft or the blade unit, the blade unit being configured to drive the rotating shaft to rotate under the influence of fluid, thereby driving the cleaning element to rotate and clean the filter element.

[0016] In this type of embodiment, by setting a rotating shaft and rotatably connecting it to the housing, the rotating mechanism has a stable rotational support structure. The blade unit is connected to the rotating shaft, so that when the blade unit is subjected to fluid force, it can drive the rotating shaft to rotate, thereby forming a rotational motion structure centered on the rotating shaft.

[0017] When fluid enters the housing and flows through the blade unit, the fluid exerts a force on the blade unit, causing it to rotate around the rotation axis. This rotational motion is then transmitted to the cleaning component via the rotation axis, driving the cleaning component to rotate. The transmission structure of the rotation axis ensures that the driving force generated by the blade unit is stably transmitted to the cleaning component, enabling it to perform a continuous rotating cleaning action.

[0018] In some exemplary embodiments of this application, the blade unit includes a plurality of rotating blades, which are circumferentially spaced along the rotation axis; Wherein, when the cleaning component is connected to the rotating shaft, the cleaning component is arranged side by side with the blade unit along the axial direction of the rotating shaft, and / or, the cleaning component is located between two adjacent rotating blades along the circumferential direction of the rotating shaft.

[0019] In this type of embodiment, multiple rotating blades in each blade unit are arranged at circumferential intervals, so that the rotating mechanism can be subjected to fluid forces under different incoming flow directions, thereby maintaining a more stable rotation state.

[0020] In some exemplary embodiments of this application, the filter element is detachably connected to the housing, and the rotating mechanism is detachably connected to the housing; When the filter element is connected to the housing, the rotating mechanism is in a locked state and is fixed inside the housing; After the filter element is removed from the housing, the rotating mechanism is in a detachable state and can be removed from the housing.

[0021] In this type of embodiment, by detachably configuring the filter element and the housing, and also detachably configuring the rotating mechanism within the housing, a structural state is achieved where the rotating mechanism is fixed during filter element installation and detachable after filter element removal. This design ensures that the rotating mechanism maintains a stable position when the filter element is present, avoiding unnecessary shaking or displacement under fluid action. Furthermore, when disassembly, inspection, or maintenance of the rotating mechanism is required, it automatically becomes detachable after the filter element is removed, allowing it to be safely and conveniently removed from the housing.

[0022] In some exemplary embodiments of this application, the trash can further includes: A protective cover is installed inside the box and surrounds the cleaning mechanism. The protective cover has a sludge inlet on the side facing the sludge suction port, which is used to allow fluid to enter the protective cover.

[0023] In this type of embodiment, a protective cover is installed inside the housing and surrounds the cleaning mechanism, creating a relatively independent structural area for the cleaning mechanism within the protective cover. Simultaneously, a sludge inlet is provided on the side of the protective cover facing the suction port, allowing fluid to enter the housing through the inlet and flow through the cleaning mechanism. This structure ensures that the fluid entering the housing acts on the cleaning mechanism as it passes through the area defined by the protective cover, enabling the cleaning mechanism to rotate and clean the filter elements during fluid flow. Furthermore, the protective cover encloses the cleaning mechanism, preventing large particles from directly impacting the rotating parts of the mechanism and reducing the risk of jamming.

[0024] In some exemplary embodiments of this application, the protective cover is detachably connected to the housing, and the protective cover and the filter together form a receiving cavity, with the cleaning mechanism located inside the receiving cavity.

[0025] In this type of embodiment, the cleaning mechanism is confined within a cavity formed by detachably connecting the protective cover to the housing and having the protective cover and filter element together enclose the cavity. Thus, fluid entering the trash can first enters the cavity through the inlet of the protective cover and then flows towards the filter element. Because the cleaning mechanism is located within this cavity, the fluid passes through the cleaning mechanism before entering the filter element, thereby causing the cleaning mechanism to rotate during fluid flow, enabling the cleaning mechanism to continuously clean the filter element.

[0026] In some exemplary embodiments of this application, the trash can further includes a rotary drive mechanism connected to the cleaning mechanism, the rotary drive mechanism being used to drive the cleaning mechanism to rotate in order to clean the filter element.

[0027] In this type of embodiment, by incorporating a rotary drive mechanism within the waste bin and connecting it to the cleaning mechanism, the cleaning mechanism can actively rotate under the drive of the rotary drive mechanism when needed, thereby cleaning the filter element. Compared to structures that rely solely on fluid to propel the cleaning mechanism, the rotary drive mechanism provides a more stable and controllable driving force, enabling the cleaning mechanism to maintain rotation even when the fluid flow rate is low or the fluid impact force is insufficient, thus ensuring continuous cleaning of the filter element.

[0028] The cleaning mechanism is not only propelled by the fluid as it passes through, but also further enhanced by the rotational drive mechanism. This allows for more effective cleaning of impurities adhering to the surface of the filter element, reducing the accumulation of impurities on the filter element surface, lowering the possibility of filter element blockage, and helping to maintain the smooth flow of fluid inside the trash can.

[0029] In some exemplary embodiments of this application, the rotary drive mechanism includes: A flow guiding structure is provided inside the housing, which is used to guide fluid to impact the cleaning mechanism.

[0030] In this type of embodiment, by setting a flow guiding structure inside the box, the fluid entering the box is guided by the flow guiding structure during the flow process, so that the fluid forms a relatively concentrated impact when it reaches the cleaning mechanism, which helps to improve the driving effect of the fluid on the cleaning mechanism, making it easier for the cleaning mechanism to rotate under the action of the fluid.

[0031] According to a second aspect of this application, a method for cleaning the trash can of a swimming pool cleaning robot is provided. The swimming pool cleaning robot includes a suction motor and a trash can. The trash can includes a box and a filter and a cleaning mechanism disposed on the box. The box is provided with a suction port and a discharge port, and the filter is located at the discharge port. The cleaning method includes: When the suction motor is activated, external fluid enters the internal cavity of the trash can through the suction port, flows to the cleaning mechanism, and drives the cleaning mechanism to rotate to clean the filter element. After the flow direction is changed by the cleaning mechanism, the fluid flows to the discharge port.

[0032] The cleaning method provided in this application involves activating a suction motor during the operation of a pool cleaning robot. This allows external fluid to enter the internal cavity of the trash can through the suction port and flow along the flow path from the suction port to the cleaning mechanism. As the fluid flows through the cleaning mechanism, it exerts a pushing effect on the cleaning mechanism, causing the cleaning mechanism to rotate under the action of the fluid.

[0033] Because the cleaning mechanism is located between the suction port and the discharge port, and the fluid needs to change its flow direction when passing through the cleaning mechanism, the force generated by the fluid during the turning process can continuously act on the cleaning mechanism, thus keeping the cleaning mechanism rotating under the propulsion of the fluid. During the rotation, the cleaning mechanism disturbs the impurities attached to the surface of the filter element, allowing the impurities to gradually detach from the surface of the filter element. This achieves cleaning of the filter element during the fluid flow process, making it less likely for the filter element to be affected by impurity accumulation during filtration.

[0034] Therefore, by utilizing the fluid flow generated by the suction motor, suction and filter cleaning can be achieved simultaneously, which helps to reduce the need for additional drive structures, thereby reducing overall power consumption and operating noise.

[0035] In some exemplary embodiments of this application, the cleaning method further includes: In response to an increased drive command, the suction motor is controlled to increase suction power and the rotational speed of the cleaning mechanism is increased; The increase in drive command is determined based on the degree of blockage in the trash can.

[0036] In this type of embodiment, by responding to an increased drive command when the trash can tends to become clogged, the suction motor is controlled to increase suction, thereby increasing the fluid flow rate into the trash can and enhancing the fluid's pushing effect on the cleaning mechanism, which in turn increases the rotational speed of the cleaning mechanism. This enhances the agitation effect of the cleaning mechanism on impurities attached to the filter surface, making it easier to remove these impurities and thus enabling effective cleaning of the filter even when the degree of clogging increases.

[0037] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0038] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0039] Figure 1 This is a schematic diagram of the trash can structure in an exemplary embodiment of this application.

[0040] Figure 2 This is a schematic diagram of the trash can from another angle in an exemplary embodiment of this application.

[0041] Figure 3 This is a schematic diagram of the explosion structure of the trash can in an exemplary embodiment of this application.

[0042] Figure 4 This is a schematic diagram of the trash can structure in another exemplary embodiment of this application.

[0043] Figure 5 This is a schematic diagram of the connection structure of the protective cover, cleaning mechanism and filter element in an exemplary embodiment of this application.

[0044] Figure 6 This is an exploded structural diagram of the protective cover, cleaning mechanism, and filter element in an exemplary embodiment of this application.

[0045] Figure 7 This is a schematic diagram of the blade unit structure in an exemplary embodiment of this application.

[0046] Figure 8 yes Figure 3 Enlarged diagram of part A in the middle.

[0047] Figure 9 yes Figure 3 Enlarged schematic diagram of part B in the middle.

[0048] Figure 10This is a schematic diagram of the trash can structure in yet another exemplary embodiment of this application.

[0049] Figure 11 This is a schematic diagram of the structure of the pool cleaning robot in an exemplary embodiment of this application.

[0050] Figure 12 This is a cross-sectional view of the pool cleaning robot in an exemplary embodiment of this application.

[0051] Figure 13 This is a schematic diagram of the cleaning method flow in an exemplary embodiment of this application.

[0052] Explanation of reference numerals in the attached figures 1-Main body; 11-Inlet; 12-Outlet; 2-Suction motor; 10-Trash can; 100-Box; 110-Suction port; 120-Drain port; 130-First connecting part; 131-First locking part; 132-Disassembly and assembly channel; 140-Third connecting part; 150-Bottom shell; 160-Top cover; 200-Filter element; 210-Second connecting part; 211-Second locking part; 300-Cleaning mechanism; 310-Rotating mechanism; 311-Rotating shaft; 312-Blade unit; 3121-Rotating blade; 313-Fourth connecting part; 3131-Fourth locking part; 320-Cleaning element; 400-Protective cover; 410-Drain port; 500-Drive motor; S1-First flow path; S2-Second flow path. Detailed Implementation

[0053] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed descriptions will be omitted. Furthermore, the drawings are merely illustrative of this application and are not necessarily drawn to scale.

[0054] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0055] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0056] In this application, terms such as "perpendicular" and "equal" refer to perpendicularity and equality within the range of process error, not absolute perpendicularity and equality. Process error can be within ±10% or ±5%. For example, if the first direction and the second direction are perpendicular, it can be understood that the angle between the first direction and the second direction can be 90° ± 5°.

[0057] like Figures 1 to 3 , Figure 11 and Figure 12 As shown, this application provides a swimming pool cleaning robot, including a main body 1, a suction motor 2, and a trash can 10. The suction motor 2 is located inside the main body 1, and the trash can 10 is located inside the main body 1.

[0058] The trash can 10 includes a housing 100, a filter element 200, and a cleaning mechanism 300. The housing 100 has an internal cavity and a suction port 110 and a discharge port 120 communicating with the internal cavity. A suction motor 2 is used to direct fluid from the suction port 110 to the discharge port 120. The filter element 200 is disposed inside the housing 100 and located at the discharge port 120. The cleaning mechanism 300 is disposed inside the housing 100 and is used to clean the filter element 200.

[0059] The housing 100 has internal flow paths for guiding fluid flow. These flow paths include a first flow path S1 from the suction port 110 to the cleaning mechanism 300, and a second flow path S2 from the cleaning mechanism 300 to the discharge port 120. The cleaning mechanism 300 is located between the first flow path S1 and the second flow path S2 and is disposed on one side of the filter element 200. The first flow path S1 and the second flow path S2 form a turning connection at the cleaning mechanism 300, causing the fluid to change its flow direction as it passes through the cleaning mechanism 300 before flowing to the discharge port 120. The cleaning mechanism 300 is configured to rotate under the influence of the fluid to clean the filter element 200.

[0060] The swimming pool cleaning robot provided in this application embodiment has a first flow path S1 from the suction port 110 to the cleaning mechanism 300 and a second flow path S2 from the cleaning mechanism 300 to the discharge port 120 inside the trash can 10. The first flow path S1 and the second flow path S2 are connected at the cleaning mechanism 300, so that the fluid entering the trash can 10 changes direction when flowing through the cleaning mechanism 300. Because the fluid generates a certain impact force and disturbance during the turning process, it can generate a continuous pushing force on the cleaning mechanism 300, so that the cleaning mechanism 300 can rotate under the propulsion of the fluid.

[0061] Meanwhile, the cleaning mechanism 300 is located on one side of the filter element 200. During rotation, it can scrape or disturb the impurities attached to the surface of the filter element 200, so that the dirt accumulated on the filter element 200 is removed from the surface of the filter element 200 in time, thereby reducing the possibility of the filter element 200 becoming clogged.

[0062] Through the above structural design, this application can simultaneously achieve suction and filter cleaning functions by utilizing the fluid flow formed by the suction motor 2. This allows the cleaning mechanism 300 to clean the filter 200 without relying on an additional drive motor, thereby helping to reduce the overall power consumption and operating noise of the pool cleaning robot, while enhancing the cleaning effect on the trash can 10, enabling the robot to maintain stable suction performance during long-term operation.

[0063] The various parts of the pool cleaning robot provided in the embodiments of this application will now be described in detail with reference to the accompanying drawings: like Figures 1 to 3 , Figure 11 and Figure 12 As shown, this application provides a swimming pool cleaning robot, including a main body 1, a suction motor 2, and a trash can 10.

[0064] Specifically, the main body 1 can be the body structure of the pool cleaning robot, used to install various functional components. For example, the main body 1 may include a shell structure, with an internal space for accommodating the various functional components. The trash can 10 can be installed in a preset mounting position inside the main body and communicates with the suction channel of the pool cleaning robot.

[0065] In some embodiments, a suction assembly may be provided on the main body 1. The suction assembly is used to suck external fluid and impurities therein into the cleaning robot. The suction assembly can be connected to the suction port 110 of the trash can 10 through a pipe or channel, allowing external fluid to enter the internal cavity of the trash can 10 through the suction port 110. The suction assembly may include a suction motor 2 for providing suction to draw external fluid into the trash can 10.

[0066] In some embodiments, the trash can 10 can be installed inside the main body 1 via an insertion structure. For example, an installation groove or guide structure can be provided inside the main body 1, allowing the trash can 10 to be inserted into the main body 1 along the installation groove and positioned at the installation location. The trash can 10 can also be fixed inside the main body 1 via a snap-fit ​​structure, a locking structure, or a limiting structure.

[0067] As the pool cleaning robot moves along the bottom or walls of the pool, it uses a suction motor 2 to draw water and impurities such as leaves, sediment, insect remains, or algae into the trash can 10. The water is then filtered and discharged, while the impurities are retained in the trash can 10. During this process, the trash can 10 separates and collects the sucked-in solid-liquid mixture of dirt and grime.

[0068] In some embodiments, the pool cleaning robot may further include a drive component, a walking component, and a control component. The drive component drives the pool cleaning robot to move, the walking component supports the pool cleaning robot in walking on land or underwater, and the control component controls the operating state of the pool cleaning robot. The trash can 10 is used to collect and filter the fluid and impurities sucked in during the operation of the pool cleaning robot.

[0069] like Figures 1 to 3 As shown, the trash can 10 includes a body 100, a filter element 200, and a cleaning mechanism 300.

[0070] Specifically, the housing 100 has an internal cavity, and a suction port 110 communicating with the internal cavity is provided on the housing 100. Figure 2 ) and sewage outlet 120 ( Figure 3 The suction port 110 is used to allow external fluid to enter the internal cavity of the housing 100 during the operation of the cleaning robot. The fluid can be water or a solid-liquid mixture containing impurities, such as water in a swimming pool and impurities such as leaves, silt, algae, or other particulate matter. Under the suction force generated by the pool cleaning robot, the external fluid enters the internal cavity of the housing 100 through the suction port 110.

[0071] The housing 100 includes a bottom shell 150 and a top cover 160. The bottom shell 150 and the top cover 160 are connected to each other and together form the internal cavity of the housing 100. The bottom shell 150 can be an open shell structure with an opening at its upper end. The top cover 160 is installed at the opening of the bottom shell 150, thereby closing the opening of the bottom shell 150 and forming the internal space of the housing 100.

[0072] Both the suction port 110 and the discharge port 120 are located on the bottom shell 150. Specifically, the suction port 110 can be located on the side wall or bottom wall of the bottom shell 150, and is used to communicate with the suction channel of the cleaning robot, allowing external fluid to enter the internal cavity of the housing 100 through the suction port 110. The discharge port 120 can be located on the other side wall of the bottom shell 150 and communicates with the internal cavity of the housing 100, and is used to discharge filtered fluid from the housing 100.

[0073] In some embodiments, the opening edge of the bottom shell 150 may be provided with a snap-fit ​​portion, and the top cover 160 is provided with a corresponding snap-fit ​​structure, so that the top cover 160 can be installed on the bottom shell 150 and kept fixed.

[0074] The filter element 200 is connected to the housing 100 and located in the flow path between the suction port 110 and the discharge port 120. It is used to filter the fluid entering the internal cavity of the housing 100, allowing the fluid to be discharged through the discharge port 120, while impurities are intercepted and retained inside the housing 100. The filter element 200 can be a filter screen structure, such as a mesh structure or a porous structure, with its pore size configured to allow water or airflow to pass through while blocking larger impurities.

[0075] A cleaning mechanism 300 is connected inside the housing 100 and arranged adjacent to the filter element 200 for cleaning the filter element 200. The cleaning mechanism 300 is configured to rotate under the impingement of fluid, thereby causing all or part of the structure of the cleaning mechanism 300 to scrape or sweep the surface of the filter element 200.

[0076] Furthermore, a flow path is formed inside the housing 100 to guide fluid flow, which allows fluid entering the internal cavity of the housing 100 via the suction port 110 to flow in a predetermined direction. Specifically, the flow path includes a first flow path S1 extending from the suction port 110 to the cleaning mechanism 300, and a second flow path S2 extending from the cleaning mechanism 300 to the discharge port 120.

[0077] The cleaning mechanism 300 is located between the first flow path S1 and the second flow path S2, and is disposed on one side of the filter element 200. The filter element 200 can be disposed at the drain port 120, so that after the fluid flows through the cleaning mechanism 300, it flows to the filter element 200, is filtered by the filter element 200, and is then discharged from the drain port 120. The cleaning mechanism 300 can be disposed adjacent to or in contact with the filter element 200, so that the cleaning mechanism 300 can act on the surface of the filter element 200 during movement. The cleaning mechanism 300 can be rotatably disposed about a predetermined axis, for example, by being installed inside the housing 100 through a rotating connection structure, so that the cleaning mechanism 300 can rotate when subjected to external force.

[0078] The first flow path S1 and the second flow path S2 form a turning connection at the cleaning mechanism 300. That is, when the fluid flows along the first flow path S1 to the location of the cleaning mechanism 300, its flow direction changes, and it continues to flow along the second flow path S2. This turning connection can be achieved by rotating the cleaning mechanism 300, causing the fluid to change from a first direction to a second direction as it flows through the area near the cleaning mechanism 300. The first direction corresponds to the first flow path S1, and the second direction corresponds to the second flow path S2. The first and second directions can intersect, for example, at an angle, thus forming a turning flow path during the flow process. The directions of the first flow path and the second flow path S2 can be approximately 90° ± 30°, but are not limited to this.

[0079] The cleaning mechanism 300 is configured to rotate under the impingement of fluid. Specifically, when the suction motor 2 operates, external fluid enters the housing 100 through the suction port 110 and flows towards the cleaning mechanism 300 along the first flow path S1. As the fluid flows through the cleaning mechanism 300, it acts on the force-bearing surface of the cleaning mechanism 300, causing the cleaning mechanism 300 to rotate under the action of the fluid. During rotation, the cleaning mechanism 300 can move relative to the filter element 200, thereby acting on the surface of the filter element 200 during movement. The rotation direction of the cleaning mechanism 300 can be related to the flow direction of the fluid, for example, forming a continuous driving force during fluid flow, enabling the cleaning mechanism 300 to maintain its rotational state during continuous fluid flow.

[0080] In some exemplary embodiments of this application, the filter element 200 is disposed over the drain port 120, so that fluid entering the internal cavity of the housing 100 from the suction port 110 must pass through the filter element 200 as it flows toward the drain port 120. The filter element 200 can be disposed inside the housing 100 by a connecting structure, such as by a snap-fit ​​structure, a plug-in structure, or other connection methods, so that the filter element 200 can be located at the drain port 120.

[0081] like Figure 11 and Figure 12 As shown, the main body 1 has an inlet 11 and an outlet 12. The inlet 11 is connected to the suction port 110, allowing external fluid to enter the interior of the main body 1 through the inlet 11 and further enter the internal cavity of the housing 100 through the suction port 110. The outlet 12 is connected to the drain port 120, allowing fluid filtered by the filter element 200 to enter the outlet 12 through the drain port 120 and be discharged from the main body 1.

[0082] The suction motor 2 is located between the outlet 12 and the drain outlet 120, so that the suction motor 2 can draw external fluid into the housing 100 through the inlet 11 through the suction action, and discharge it through the drain outlet 120 and the outlet 12 after passing through the filter element 200, thereby forming a connected fluid channel inside the main body 1.

[0083] The orthographic projections of the water inlet 11 and the cleaning mechanism 300 onto the plane of the suction port 110 both at least partially overlap with the suction port 110. This allows external fluid to enter the body 1 through a path corresponding to the suction port 110, thus enabling the fluid entering the body 100 to flow along the first flow path S1 towards the area where the cleaning mechanism 300 is located. The at least partial overlap of the orthographic projections of the cleaning mechanism 300 and the suction port 110 onto the plane of the suction port 110 further concentrates the fluid entering the body 1, allowing it to flow towards the area where the cleaning mechanism 300 is located. This reduces fluid deviation before entering the trash can 10, facilitating more direct action of the fluid on the cleaning mechanism 300 to drive its rotation.

[0084] The orthographic projection of the outlet 12 onto the plane of the suction port 110 is outside the suction port 110. This causes the discharge path of the fluid to be offset relative to the fluid entry path after passing through the cleaning mechanism 300 and the filter element 200, thus forming a separation path for the fluid from the suction area to the discharge area inside the housing 100. Through the above structural arrangement, the fluid can flow along the first flow path S1 to the location of the cleaning mechanism 300 after entering the housing 100, and after passing through the cleaning mechanism 300 and the filter element 200, it can flow along the second flow path S2 to the drain port 120 and the outlet 12, thereby forming a relatively clear fluid flow path inside the main body 1.

[0085] like Figure 1 As shown, the filter element 200 is at least partially arcuate, meaning that at least a portion of the filtration area of ​​the filter element 200 is arranged along an arcuate trajectory. The arcuate structure can form a curved filter surface around a predetermined axis, for example, forming a semi-circular arc. The filter element 200 may include a filter body 1 and a filter hole or filter screen structure disposed on the filter body 1. The filter screen may be configured as an arcuate structure so that the fluid can pass through the arcuate structure filter screen when passing through the filter element 200.

[0086] The rotation trajectory of the end of the cleaning mechanism 300 is adapted to the arc-shaped structure. That is, during the rotation of the cleaning mechanism 300, the end away from the center of rotation moves along a predetermined trajectory, which is adapted to the shape and size of the arc-shaped structure.

[0087] In this type of embodiment, since the rotation trajectory of the end of the cleaning mechanism 300 is adapted to the arc-shaped structure, the cleaning mechanism 300 can move along the arc-shaped surface of the filter element 200 during rotation, so that the cleaning mechanism 300 can continuously act on the surface of the filter element 200 during the movement, causing the impurities attached to the surface of the filter element 200 to be disturbed during rotation and gradually leave the surface of the filter element 200, thereby reducing the local accumulation of impurities on the surface of the filter element 200.

[0088] like Figure 1 and Figure 3 As shown, in some embodiments of this application, the cleaning mechanism 300 includes a rotating mechanism 310 and a cleaning component 320 connected to the rotating mechanism 310.

[0089] Specifically, the rotating mechanism 310 is connected inside the housing 100 and is rotatable relative to the housing 100. The cleaning component 320 is connected to the rotating mechanism 310 and is rotatable synchronously with the rotating mechanism 310. The cleaning component 320 can be disposed on the rotating mechanism 310 by means of snap-fit, welding, threaded connection, or integral molding. The cleaning component 320 can be a brush-like structure, a scraper structure, or a flexible sheet structure. For example, in some embodiments, the cleaning component 320 may include multiple bristles; in other embodiments, the cleaning component 320 may also be a plate-like scraper with its edge facing the filter element 200.

[0090] The rotating mechanism 310 is configured to rotate under the influence of fluid. When fluid enters the internal cavity of the housing 100 through the suction port 110 and flows through the rotating mechanism 310, the fluid exerts a force on the rotating mechanism 310, causing the rotating mechanism 310 to rotate. As the rotating mechanism 310 rotates, the cleaning element 320 connected to the rotating mechanism 310 rotates accordingly, thereby cleaning the filter element 200.

[0091] In this type of embodiment, the cleaning mechanism 300 is configured to include a rotating mechanism 310 and a cleaning component 320 connected to the rotating mechanism 310, so that the cleaning component 320 can rotate with the rotating mechanism 310. When fluid enters the inside of the trash can 10 and flows through the rotating mechanism 310, the fluid exerts a force on the rotating mechanism 310, thereby driving the rotating mechanism 310 to rotate, and synchronously driving the cleaning component 320 to rotate.

[0092] Because the cleaning component 320 moves relative to the filter component 200 during rotation, it can continuously scrape or sweep the surface of the filter component 200, thereby creating a dynamic cleaning process on the surface of the filter component 200 and reducing the retention and accumulation of impurities on the surface of the filter component 200. At the same time, this structure uses the flow of the fluid itself to drive the movement of the cleaning mechanism 300, without the need for an additional power device, so that the cleaning action can occur synchronously with the fluid flow, thereby continuously maintaining the permeability of the filter component 200 during the operation of the trash can 10.

[0093] Optionally, the rotating mechanism 310 includes a rotating shaft 311 and a blade unit 312 connected to the rotating shaft 311.

[0094] Specifically, the rotating shaft 311 is rotatably connected inside the housing 100. The rotating shaft 311 can extend along the width or length direction of the housing 100, and its two ends can be rotatably connected to the housing 100 via bearing seats, bushings, or support seats. For example, support portions can be provided on the inner wall of the housing 100, and the two ends of the rotating shaft 311 are respectively installed in the support portions, so that the rotating shaft 311 can rotate relative to the housing 100 around its own axis.

[0095] The blade unit 312 is connected to the rotating shaft 311. The blade unit 312 is configured to drive the rotating shaft 311 to rotate under the push of the fluid, thereby driving the cleaning element 320 to rotate, so as to clean the filter element 200.

[0096] The blade unit 312 can be connected to the rotating shaft 311 in various ways. For example, the blade unit 312 can be integrally formed with the rotating shaft 311; or it can be fixed to the outer periphery of the rotating shaft 311 by means of a snap-fit ​​structure, a screw connection structure, a welding structure, etc. In some embodiments, the blade unit 312 may also include a blade mounting seat disposed on the outer periphery of the rotating shaft 311, the blade mounting seat being fixed to the rotating shaft 311, and the blade being mounted on the blade mounting seat.

[0097] In this type of embodiment, by setting a rotating shaft 311 and rotatably connecting it within the housing 100, the rotating mechanism 310 has a stable rotational support structure. The blade unit 312 is connected to the rotating shaft 311, so that when the blade unit 312 is subjected to fluid force, it can drive the rotating shaft 311 to rotate, thereby forming a rotational motion structure centered on the rotating shaft 311.

[0098] When fluid enters the housing 100 and flows through the blade unit 312, the fluid exerts a force on the blade unit 312, causing it to rotate around the rotation shaft 311. This rotational motion is then transmitted to the cleaning component 320 via the rotation shaft 311, thereby driving the cleaning component 320 to rotate. Through the transmission structure of the rotation shaft 311, the driving force generated by the blade unit 312 can be stably transmitted to the cleaning component 320, enabling the cleaning component 320 to perform continuous rotational cleaning actions.

[0099] Furthermore, in some embodiments of this application, the rotating mechanism 310 includes multiple sets of blade units 312, which are distributed at intervals along the axial direction of the rotating shaft 311.

[0100] Specifically, the rotating shaft 311 can be a slender rod-like structure, with both ends rotatably mounted within the housing 100. Multiple sets of blade units 312 can be sequentially arranged along the axial direction of the rotating shaft 311, with each set of blade units 312 spaced apart from each other axially. For example, two, three, or more sets of blade units 312 can be arranged on the rotating shaft 311, maintaining a predetermined axial spacing between each blade unit 312, thereby forming multiple structural regions on the rotating shaft 311.

[0101] Each blade unit 312 includes a plurality of rotating blades 3121, which are circumferentially spaced along the rotation axis 311. For example, in some embodiments, each blade unit 312 may include three, four, or more rotating blades 3121, which are evenly distributed around the rotation axis 311. The blades 3121 may be integrally formed with the rotation axis 311 or fixedly connected to the rotation axis 311 via a connecting seat or mounting plate. The rotating blades 3121 may be plate-shaped, arc-shaped, or paddle-shaped, with one end connected to the rotation axis 311 or mounting seat and the other end extending outwards.

[0102] The cleaning element 320 can be connected to the rotating shaft 311 or the blade unit 312. In some embodiments, the cleaning element 320 is connected to the rotating shaft 311. For example, the cleaning element 320 is arranged side by side with the blade unit 312 along the axial direction of the rotating shaft 311, or located between two adjacent sets of blade units 312, such as installing the cleaning element 320 in the axially spaced area between each two adjacent sets of blade units 312, or arranging one cleaning element 320 every two or three sets of blade units 312. Alternatively, the cleaning element 320 is located circumferentially between two adjacent rotating blades 3121 along the rotating shaft 311. Optionally, one cleaning element 320 can be arranged for each of one, two, or three rotating blades 3121; the specific arrangement is not limited in this application. The cleaning element 320 can be a brush-like structure, with one end fixed to the outer periphery of the rotating shaft 311 and the bristles facing the filter element 200; or the cleaning element 320 can also be a scraper structure, with one end fixed to the rotating shaft 311 and the other end extending to the vicinity of the filter element 200.

[0103] like Figure 6 As shown, in another embodiment, the cleaning component 320 can also be connected to the rotating end of the rotating mechanism 310, such as by connecting the cleaning component 320 to the end of the rotating blade 3121. For example, a cleaning component 320 is provided at the end of each rotating blade 3121 away from the rotating shaft 311, so that the cleaning component 320 rotates integrally with the rotating blade 3121. The cleaning component 320 can be a flexible bristle, elastic sheet, or scraper structure, and it can be fixed to the end of the rotating blade 3121 by a snap-fit ​​structure, screw connection structure, or integral molding method.

[0104] In some embodiments, the rotating shaft 311 can simultaneously provide both of the above-mentioned structural forms, that is, a cleaning element 320 can be provided between two adjacent sets of blade units 312, and a cleaning element 320 can also be provided at the end of some rotating blades 3121, so as to form a cleaning structure at different positions. Through the above arrangement, the cleaning element 320 can be distributed in different areas around the rotating shaft 311.

[0105] In some other embodiments, such as Figure 4 and Figure 5 As shown, the rotating mechanism 310 contacts the filter element 200 and is configured to rotate under the influence of fluid to clean the filter element 200. That is, in this embodiment, all or part of the structure of the rotating mechanism 310 can be reused as a cleaning element 320, such as the rotating blade 3121 being reused as a cleaning element 320, which can scrape off dirt on the filter element 200 when rotating.

[0106] In this type of embodiment, by arranging multiple sets of blade units 312 on the rotating shaft 311 and distributing each blade unit 312 at intervals along the axial direction of the rotating shaft 311, the fluid can act on the rotating blades 3121 at different axial positions, thereby forming a driving area distributed along the rotating shaft 311. This avoids the rotational torque being concentrated in a single area, reduces the off-center load caused by uneven driving force, and improves rotational stability. The multiple rotating blades 3121 in each set of blade units 312 are arranged at circumferential intervals, ensuring that the rotating mechanism 310 is subjected to fluid force under different incoming flow directions, thus maintaining a more stable rotational state.

[0107] like Figure 7 As shown, in some embodiments of this application, the rotating blade 3121 can be connected to the outer periphery of the rotating shaft 311 and can rotate together with the rotating shaft 311.

[0108] Specifically, the cross-section of the rotating blade 3121 has a blade tail connected to the rotating shaft 311 and a blade tip away from the rotating shaft 311. The blade tail can be connected to the rotating shaft 311, for example, by means of screw connection, snap-fit ​​structure, welding structure or integral molding structure to fix it to the outer periphery of the rotating shaft 311. The blade tip is the end of the rotating blade 3121 away from the rotating shaft 311, which extends radially outward.

[0109] In terms of cross-sectional structure, the thickness of the rotating blade 3121 gradually increases and then gradually decreases from the blade tip towards the blade trailing edge. In other words, the cross-section of the rotating blade 3121 is thinner near the blade trailing edge, gradually transitions to a thicker area in the middle along the radial direction, and then gradually thins again near the blade tip. The cross-section of the rotating blade 3121 can be an arc-shaped profile or a streamlined profile.

[0110] For example, in some embodiments, the upper and lower surfaces of the cross-section of the rotating blade 3121 are respectively formed as arc-shaped surfaces; in other embodiments, the cross-section of the rotating blade 3121 may also have an asymmetrical arc-shaped structure, with a larger curvature on the upper surface and a relatively gentler curvature on the lower surface. It should be noted that the upper and lower surfaces are relative terms, and can also be described as one side surface and the other side surface.

[0111] In this type of embodiment, by making the thickness of the cross section of the rotating blade 3121 gradually increase and then gradually decrease from the blade tip to the blade tip, when the fluid passes over the surface of the rotating blade 3121, the fluid flow state on both sides of the blade is different, thereby forming a force on the rotating blade 3121, making the rotating blade 3121 more likely to rotate under the action of the fluid.

[0112] With the above structure, the rotating blade 3121 can form a more obvious force difference when the fluid flows through it, which makes it easier to drive the rotating shaft 311 to rotate, and drive the cleaning component 320 to rotate through the rotating shaft 311.

[0113] like Figure 3 , Figure 8 and Figure 9 As shown, optionally, the filter element 200 is detachably connected to the housing 100, and the rotating mechanism 310 is detachably connected to the housing 100. When the filter element 200 is connected to the housing 100, the rotating mechanism 310 is in a locked state and is fixed inside the housing 100. After the filter element 200 is removed from the housing 100, the rotating mechanism 310 is in a detachable state and can be removed from the housing 100.

[0114] In this type of embodiment, by detachably configuring the filter element 200 from the housing 100 and detachably configuring the rotating mechanism 310 within the housing 100, a structural state is achieved where the rotating mechanism 310 is fixed during filter element 200 installation and detachable after filter element 200 removal. This design ensures that the rotating mechanism 310 maintains a stable position when the filter element 200 is present, avoiding unnecessary shaking or displacement under fluid action. Furthermore, when disassembly, inspection, or maintenance of the rotating mechanism 310 is required, it automatically becomes detachable after the filter element 200 is removed, allowing it to be safely and conveniently removed from the housing 100.

[0115] In some embodiments of this application, the housing 100 includes a first connecting portion 130, and the filter element 200 includes a second connecting portion 210. The filter element 200 is detachably connected to the housing 100 via the second connecting portion 210 and the first connecting portion 130. Specifically, the first connecting portion 130 may be disposed on the inner wall of the housing 100 or at the edge of the opening of the housing 100, for forming an installation mating structure with the filter element 200. The second connecting portion 210 may be disposed on the edge or frame structure of the filter element 200. When the filter element 200 is installed inside the housing 100, the second connecting portion 210 and the first connecting portion 130 cooperate with each other, thereby fixing the filter element 200 inside the housing 100. The filter element 200 can be installed at the first connecting portion 130 by means of insertion, snap-fit, or press-fit. For example, the filter element 200 can be inserted into the housing 100 along a preset installation direction, so that the second connecting portion 210 and the first connecting portion 130 form a mating structure.

[0116] In some embodiments, the housing 100 further includes a third connecting portion 140, and the rotating mechanism 310 is provided with a fourth connecting portion 313. The rotating mechanism 310 is detachably connected to the housing 100 through the cooperation of the fourth connecting portion 313 and the third connecting portion 140. The third connecting portion 140 may be disposed on the wall of the housing 100, and the fourth connecting portion 313 may be disposed at the mounting position of the rotating mechanism 310, for example, at the end of the rotating shaft 311 or on the mounting bracket of the rotating mechanism 310. When the rotating mechanism 310 is installed inside the housing 100, the fourth connecting portion 313 and the third connecting portion 140 cooperate with each other to fix the rotating mechanism 310 inside the housing 100.

[0117] like Figure 8 As shown, in some embodiments of this application, the first connecting portion 130 includes a first engaging portion 131 and a disassembly / removal channel 132, the disassembly / removal channel 132 connecting the first engaging portion 131 to the outside of the housing 100. The first engaging portion 131 may be configured as a slot structure. The disassembly / removal channel 132 may be a through-hole structure or an opening structure provided on the wall of the housing 100, used to form an installation or removal path for the filter element 200.

[0118] like Figure 9 As shown, the second connecting portion 210 includes a second engaging portion 211, which can be configured as a protruding structure or a claw structure. When the filter element 200 is installed inside the housing 100, the second engaging portion 211 can enter the position of the first engaging portion 131 via the disassembly / removal channel 132 and form a snap-fit ​​engagement with the first engaging portion 131. For example, in some embodiments, the filter element 200 can be inserted into the housing 100 along the direction of the disassembly / removal channel 132, so that the second engaging portion 211 enters the first engaging portion 131, thereby completing the installation.

[0119] like Figure 8 As shown, in another embodiment, the third connecting portion 140 is a third engaging portion, located on the side of the first engaging portion 131 away from the disassembly / removal channel 132. Figure 3 As shown, the fourth connecting part 313 includes a fourth engaging part 3131, which can be disposed at the mounting position of the rotating mechanism 310, for example, at the end of the rotating shaft 311 or on a mounting bracket. When the rotating mechanism 310 is installed inside the housing 100, the fourth engaging part 3131 can engage with the third engaging part, thereby fixing the rotating mechanism 310 inside the housing 100. The third engaging part and the fourth engaging part 3131 can be a mutually cooperating slot structure and a slot protrusion structure, or a mutually cooperating limiting hole structure and a plug-in structure. Specifically, the third engaging part can be a slot.

[0120] In this type of embodiment, by providing a snap-fit ​​structure between the first snap-fit ​​part 131 and the second snap-fit ​​part 211, and by providing a disassembly and assembly channel 132 on the housing 100 connecting to the outside of the housing 100, the second snap-fit ​​part 211 can enter through the disassembly and assembly channel 132 and snap onto the first snap-fit ​​part 131, thereby forming a detachable snap-fit ​​connection. Simultaneously, by providing the third snap-fit ​​part and the fourth snap-fit ​​part 3131, the rotating mechanism 310 can be installed inside the housing 100 by snap-fit. Through the above structure, the filter element 200 and the rotating mechanism 310 can be installed and fixed by snap-fit, and assembled or disassembled through the disassembly and assembly channel 132, thus clarifying the installation path.

[0121] like Figures 4 to 6 As shown, in some embodiments of this application, the trash can 10 further includes a protective cover 400, which is disposed inside the can body 100 and covers the periphery of the cleaning mechanism 300. The protective cover 400 can be a shell structure, and its overall shape can be a cover-shaped structure, a semi-cover-shaped structure, or a frame-type cover structure. The protective cover 400 can be disposed inside the can body 100 near the cleaning mechanism 300, and can cover the area where the cleaning mechanism 300 is located, so that the cleaning mechanism 300 is located inside the protective cover 400.

[0122] like Figure 6 As shown, the protective cover 400 has a sludge inlet 410 on the side facing the suction port 110, which allows fluid to enter the interior of the protective cover 400. For example, when external fluid enters the internal cavity of the housing 100 through the suction port 110, it can enter the interior of the protective cover 400 through the sludge inlet 410. The sludge inlet 410 can be configured as an open structure, a strip-shaped perforation structure, or a mesh opening structure, and its location can be on the side wall of the protective cover 400 facing the suction port 110. In some embodiments, the number of sludge inlets 410 can be one or more, and they are spaced apart along the circumference or axial direction of the protective cover 400.

[0123] For example, there can be multiple inlets 410, and these multiple inlets 410 can be arranged in a predetermined manner to form a grid-like structure. Specifically, the grid-like structure can be formed by multiple rows of inlets 410 arranged alternately in the horizontal and vertical directions, for example, in a matrix distribution.

[0124] In some embodiments, each inlet 410 can be a strip-shaped opening, a racetrack-shaped opening, or a polygonal opening structure. Multiple inlets 410 can be separated by connecting ribs of the protective cover 400 body, thereby forming a grid-like structure.

[0125] Optionally, a filter screen can be installed at the inlet 410. The filter screen can be installed at the inlet 410 of the protective cover 400 to perform preliminary filtration of the fluid entering the interior of the protective cover 400. Specifically, the filter screen can cover the inlet 410 and be fixedly connected to the protective cover 400, for example, by means of a snap-fit ​​structure, an embedded structure, a screw connection structure, or an integrally molded structure.

[0126] The filter screen can be a mesh structure with multiple through holes to allow fluid to pass through while blocking larger impurities. The filter screen can be made of metal mesh, plastic mesh, or composite material mesh structure, and its shape can be adapted to the shape of the inlet 410, such as a circular structure, rectangular structure, or strip structure.

[0127] In this type of embodiment, by providing a protective cover 400 inside the housing 100 and enclosing it around the cleaning mechanism 300, the cleaning mechanism 300 is positioned within the protective cover 400, forming a relatively independent structural area. Simultaneously, a sludge inlet 410 is provided on the side of the protective cover 400 facing the suction port 110, allowing fluid to enter the protective cover 400 and flow through the cleaning mechanism 300 via the sludge inlet 410. This structure ensures that the fluid entering the housing 100 acts on the cleaning mechanism 300 as it passes through the area defined by the protective cover 400, enabling the cleaning mechanism 300 to rotate and clean the filter element 200 during fluid flow. Furthermore, the protective cover 400 forms a protective enclosure for the cleaning mechanism 300, limiting the direct impact of large particles on the rotating part of the rotating mechanism 310 and reducing the risk of jamming.

[0128] The protective cover 400 is detachably connected to the housing 100. The protective cover 400 can be connected to the housing 100 via a snap-fit ​​structure, a plug-in structure, or a threaded connection structure. For example, the inner wall of the housing 100 can be provided with a mounting slot or a limiting structure, and the outer side of the protective cover 400 can be provided with a corresponding engaging part or a limiting part, so that the protective cover 400 can be installed inside the housing 100 and remain stable.

[0129] After the protective cover 400 is installed inside the housing 100, the protective cover 400 and the filter element 200 together form a receiving cavity. The receiving cavity is located inside the housing 100 and is defined by the protective cover 400 and the filter element 200. The cleaning mechanism 300 is disposed within the receiving cavity and is located near the filter element 200. For example, the cleaning mechanism 300 may be disposed in the central region of the receiving cavity or on one side near the filter element 200.

[0130] In some embodiments of this application, the protective cover 400 and the filter element 200 are detachably connected. The protective cover 400 and the filter element 200 can be connected via a snap-fit ​​structure, a plug-in structure, or a positioning structure. For example, the edge of the filter element 200 can be provided with a connecting frame, and the protective cover 400 can be correspondingly provided with a snap-fit ​​portion or a limiting portion, allowing the protective cover 400 to be installed on the filter element 200. Through the above connection methods, the protective cover 400 and the filter element 200 can form a combined structure.

[0131] Optionally, such as Figure 10 As shown, to enhance the stability of the cleaning mechanism 300, the trash can 10 also includes a rotary drive mechanism connected to the cleaning mechanism 300. The rotary drive mechanism drives the cleaning mechanism 300 to rotate in order to clean the filter element. Specifically, the rotary drive mechanism can be located inside or outside the housing 100 and forms a transmission connection with the cleaning mechanism 300, enabling the rotary drive mechanism to drive the cleaning mechanism 300 to rotate around a predetermined axis during operation. The rotary drive mechanism can be connected to the cleaning mechanism 300 via a shaft, transmission component, or other connecting structure to transmit rotational driving force to the cleaning mechanism 300, allowing the cleaning mechanism 300 to clean the surface of the filter element 200 during rotation.

[0132] In some embodiments, the rotary drive mechanism may include a drive motor 500 connected to the cleaning mechanism 300, thereby driving the cleaning mechanism 300 to rotate when the drive motor 500 outputs rotational power. Optionally, the rotary drive mechanism may be connected to a rotating shaft 311, driving the cleaning component 320 to rotate via the rotating shaft 311 to clean the filter element 200 while driving the rotating shaft 311 to rotate. It should be noted that, in addition to the rotating shaft 311, the cleaning mechanism 300 may also include structures such as the blade unit 312 in any of the above embodiments, which will not be described in detail here.

[0133] Furthermore, the drive motor 500 is a low-resistance motor. When the drive motor 500 is a low-resistance motor, the resistance generated during rotation is small, allowing the cleaning mechanism 300 to rotate more easily even when propelled by the fluid. This enables the cleaning mechanism 300 to rotate both under motor drive and under fluid propulsion. Therefore, while ensuring the cleaning mechanism 300 can clean the filter element 200, it helps reduce energy loss during the drive process and minimizes energy consumption and noise issues caused by higher drive force requirements, thereby reducing overall equipment power consumption and improving operating noise levels.

[0134] In other embodiments, the rotary drive mechanism may include a flow guide structure disposed within the housing 100 for guiding fluid to impact the cleaning mechanism 300, such as concentrating the water flow to impact the blade unit 312. In one example, the flow guide structure may be a flow guide shroud that at least partially surrounds the blade unit 312 and forms a narrow gap with the outer peripheral surface of the blade unit 312, thereby forcing the water flowing through the flow guide shroud to impact the blade unit 312 in a concentrated manner, thus increasing the driving force of the water flow on the cleaning mechanism. In yet another example, the flow guide structure may be a flow guide plate that adjusts the direction of the water flow entering the housing toward the force-bearing surface of the blade unit 312.

[0135] In this embodiment, by adding a rotary drive mechanism, an auxiliary driving force is provided when the water drive of the blade unit 312 is insufficient, ensuring that the cleaning mechanism 300 can stably and continuously clean the filter element 200, overcoming the problem of insufficient power that may occur when relying solely on water drive, and improving the reliability of the self-cleaning of the trash can 10.

[0136] like Figure 1 , 10 to Figure 13 As shown, this application also provides a cleaning method for the trash can 10 of the pool cleaning robot. The pool cleaning robot includes a suction motor 2 and a trash can 10. The trash can 10 includes a housing 100 and a filter element 200 and a cleaning mechanism 300 disposed in the housing 100. The housing 100 is provided with a suction port 110 and a discharge port 120. The filter element 200 is located at the discharge port 120.

[0137] Cleaning methods include: In step S100, the suction motor 2 is started, so that the external fluid enters the internal cavity of the trash can 10 through the suction port 110, flows to the cleaning mechanism 300, and drives the cleaning mechanism 300 to rotate to clean the filter element 200. After the flow direction is changed by the cleaning mechanism 300, the fluid flows to the drain port 120.

[0138] The specific structure of the pool cleaning robot can be referred to in any of the above embodiments, and will not be described in detail here.

[0139] The cleaning method provided in this application involves activating the suction motor 2 during the operation of the pool cleaning robot, allowing external fluid to enter the internal cavity of the trash can 10 through the suction port 110 and flow along the flow path from the suction port 110 to the cleaning mechanism 300. As the fluid flows through the cleaning mechanism 300, it can push the cleaning mechanism 300, thereby causing the cleaning mechanism 300 to rotate under the action of the fluid.

[0140] Because the cleaning mechanism 300 is located between the suction port 110 and the discharge port 120, and the fluid needs to change its flow direction when passing through the cleaning mechanism 300, the force generated by the fluid during the turning process can continuously act on the cleaning mechanism 300, thereby keeping the cleaning mechanism 300 in a rotating state under the push of the fluid. During the rotation, the cleaning mechanism 300 disturbs the impurities attached to the surface of the filter element 200, allowing the impurities attached to the surface of the filter element 200 to gradually detach from the surface of the filter element 200. This achieves cleaning of the filter element 200 during the fluid flow process, making it less likely for the filter element 200 to affect the fluid passage due to impurity accumulation during filtration.

[0141] Therefore, by utilizing the fluid flow generated by the suction motor 2, suction and cleaning of the filter element 200 can be achieved simultaneously, which helps to reduce the need for additional drive structures, thereby reducing the overall power consumption and operating noise.

[0142] In some embodiments of this application, the cleaning method further includes: In step S200, in response to the increase drive command, the suction motor 2 is controlled to increase suction and the rotation speed of the cleaning mechanism 300 is increased; The addition of drive commands is determined based on the degree of blockage in the trash can 10.

[0143] Specifically, during the operation of the cleaning robot, as impurities gradually accumulate in the filter element 200 within the trash can 10, the resistance of the fluid passing through the filter element 200 may change, thus affecting the fluid flow state. Based on the degree of blockage in the trash can 10, the system can generate an increased drive command to change the operating state of the suction motor 2, thereby increasing the fluid flow speed and the fluid power acting on the cleaning mechanism 300, which in turn increases the rotational speed of the cleaning mechanism 300 to further clean the filter element 200.

[0144] In some embodiments, the degree of clogging of the trash can 10 can be determined based on the fluid flow state. For example, the clogging of the filter element 200 can be determined by detecting changes in fluid velocity, flow rate, or pressure. When fluid passes through the filter element 200, if a decrease in flow velocity or a pressure change exceeding a predetermined range is detected, it can be determined that the filter element 200 is prone to clogging, and an increased drive command is generated to increase the suction force of the suction motor 2, thereby increasing the driving effect of the fluid on the cleaning mechanism 300 and increasing the rotational speed of the cleaning mechanism 300.

[0145] In some embodiments, the degree of clogging of the trash can 10 can also be determined based on running time or usage status. For example, after the cleaning robot has been running continuously for a predetermined time, it can be determined that the filter element 200 may have accumulated a certain amount of impurities, thereby generating an increased drive command to make the suction motor 2 enter a higher suction working state, so that the cleaning mechanism 300 rotates at a higher speed for a certain period of time to perform enhanced cleaning of the filter element 200.

[0146] In other embodiments, the drive command can be generated by the control system according to preset rules. For example, when the rotation speed of the cleaning mechanism 300 is detected to be lower than a predetermined threshold, such as lower than 100 rpm / min, the drive command is generated to increase the suction of the suction motor 2, thereby increasing the fluid flow rate and thus increasing the driving force acting on the cleaning mechanism 300, so that the rotation speed of the cleaning mechanism 300 is increased accordingly.

[0147] In this way, the rotation state of the cleaning mechanism 300 can be adjusted according to the degree of blockage of the trash can 10, so that the cleaning mechanism 300 can obtain greater driving force when the blockage is high. This allows the cleaning process of the cleaning mechanism 300 on the filter element 200 to adapt to different working conditions, and the filter element 200 can be cleaned under different usage conditions.

[0148] It should be noted that although the steps of the method for forming the structure in this application are described in a specific order in the accompanying drawings, this does not require or imply that these steps must be performed in that specific order, or that all the steps shown must be performed to achieve the desired result. Additional or alternative steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0149] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the appended claims.

Claims

1. A swimming pool cleaning robot characterized by, include: main body; A suction motor is located inside the main body; A trash can, disposed within the main body, comprises: The housing has an internal cavity and a suction port and a discharge port communicating with the internal cavity. The suction port and the discharge port are connected by a suction motor to form a fluid flow. A filter element, wherein the filter element is disposed in the housing and located at the drain outlet; A cleaning mechanism is provided inside the housing, and the cleaning mechanism is used to clean the filter element; The interior of the housing forms a flow path for guiding fluid flow, the flow path including a first flow path from the suction port to the cleaning mechanism, and a second flow path from the cleaning mechanism to the discharge port; The cleaning mechanism is located between the first flow path and the second flow path, and is disposed on one side of the filter element; The first flow path and the second flow path form a turning connection at the cleaning mechanism, so that the fluid changes its flow direction when it flows through the cleaning mechanism and then flows to the drain outlet. The cleaning mechanism is configured to rotate under the influence of fluid to clean the filter element.

2. The swimming pool cleaning robot of claim 1, wherein, The main body is provided with a water inlet and a water outlet. The water inlet is connected to the suction port, and the water outlet is connected to the discharge port. The suction motor is located between the water outlet and the discharge port. The orthographic projections of the water inlet and the cleaning mechanism onto the plane where the suction port is located both overlap with the suction port at least partially; The orthographic projection of the outlet onto the plane of the suction port is outside the suction port.

3. The swimming pool cleaning robot of claim 1, wherein, The filter element is at least partially arc-shaped, and the rotation trajectory of the end of the cleaning mechanism is adapted to the arc-shaped structure so that the cleaning mechanism cleans the filter element during rotation.

4. The swimming pool cleaning robot according to claim 1, characterized in that, The cleaning facility includes: A rotating mechanism, comprising a rotating shaft and a blade unit, wherein the rotating mechanism is rotatably connected to the housing, and the blade unit is connected to the rotating shaft; A cleaning element is connected to the rotating shaft or the blade unit, the blade unit being configured to drive the rotating shaft to rotate under the influence of fluid, thereby driving the cleaning element to rotate and clean the filter element.

5. The pool cleaning robot according to claim 4, characterized in that, The blade unit includes multiple rotating blades, which are circumferentially spaced along the rotation axis. Wherein, when the cleaning component is connected to the rotating shaft, the cleaning component is arranged side by side with the blade unit along the axial direction of the rotating shaft, and / or, the cleaning component is located between two adjacent rotating blades along the circumferential direction of the rotating shaft.

6. The pool cleaning robot according to claim 4, characterized in that, The filter element is detachably connected to the housing, and the rotating mechanism is detachably connected to the housing; When the filter element is connected to the housing, the rotating mechanism is in a locked state and is fixed inside the housing; After the filter element is removed from the housing, the rotating mechanism is in a detachable state and can be removed from the housing.

7. The pool cleaning robot according to claim 1, characterized in that, The trash can also include: A protective cover is installed inside the box and surrounds the cleaning mechanism. The protective cover has a sludge inlet on the side facing the sludge suction port, which is used to allow fluid to enter the protective cover.

8. The pool cleaning robot according to claim 7, characterized in that, The protective cover is detachably connected to the housing, and the protective cover and the filter together form a receiving cavity, with the cleaning mechanism located inside the receiving cavity.

9. The pool cleaning robot according to claim 1, characterized in that, The trash can also includes a rotary drive mechanism for driving the cleaning mechanism to rotate and clean the filter.

10. The pool cleaning robot according to claim 9, characterized in that, The rotary drive mechanism includes: A flow guiding structure is provided inside the housing, which is used to guide fluid to impact the cleaning mechanism.

11. A method for cleaning the trash can of a swimming pool cleaning robot, characterized in that, The pool cleaning robot includes a suction motor and a trash can. The trash can includes a box and a filter and a cleaning mechanism disposed in the box. The box is provided with a suction port and a discharge port, and the filter is located at the discharge port. The cleaning method includes: When the suction motor is activated, external fluid enters the internal cavity of the trash can through the suction port, flows to the cleaning mechanism, and drives the cleaning mechanism to rotate to clean the filter element. After the flow direction is changed by the cleaning mechanism, the fluid flows to the discharge port.

12. The cleaning method according to claim 11, characterized in that, The cleaning method further includes: In response to an increased drive command, the suction motor is controlled to increase suction power and the rotational speed of the cleaning mechanism is increased; The increase in drive command is determined based on the degree of blockage in the trash can.

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