Wastewater tank, cleaning device and cleaning system

Abstract

This invention provides a wastewater tank, a cleaning device, and a cleaning system. The cleaning device comprises a machine body. The wastewater tank comprises: a tank body which defines an accommodating cavity; a tank cover assembly comprising a tank cover and a position triggering device. The tank cover is arranged to cover the tank body and defines a suction channel communicating with the accommodating cavity and a movement space. The position triggering device is movably arranged in the movement space. The wastewater tank also comprises a filter assembly which is detachably installed in the suction channel. When the filter assembly is installed in the suction channel, it abuts against the position triggering device and presses the position triggering device to retract into the movement space. When the filter assembly is separated from the suction channel, the position triggering device extends from the movement space and prevents the wastewater tank from being installed on the machine body. The wastewater tank of this invention can remind users to reinstall the filter assembly on the tank cover, which avoids damage to the suction device in case the cleaning device operates without the filter assembly.

Description

Technical Field

[0001] This invention relates to the technical field of cleaning devices, especially a wastewater tank, a cleaning device, and a cleaning system.Background Technology

[0002] With the development of social economy and the improvement of people's living standards, cleaning devices such as floor washers and vacuum cleaners are increasingly used in people's daily lives due to their high-efficiency cleaning, time-saving, and laborsaving advantages.

[0003] Most models of floor washers on the market need to create a negative pressure state within the inner cavity of the wastewater tank through a suction channel on the wastewater tank cover, so as to suck the wastewater on the ground into the wastewater tank. In addition, in order to prevent water ingress into electrical components such as the suction motor, a filter assembly is usually installed in the suction channel.

[0004] However, after cleaning the wastewater tank, users may forget to reinstall the filter assembly. As a result, wastewater may be sucked into the suction motor, causing damage to the main motor.Summary of the Invention

[0005] In view of the above-mentioned problems, the present invention provides a wastewater tank, a cleaning device and a cleaning system, which can remind users to reinstall the filter assembly on the tank cover, thereby avoiding damage to the suction device when the cleaning device operates without the filter assembly in place.

[0006] The present invention provides a wastewater tank for a cleaning device. The cleaning device comprises a machine body. The wastewater tank comprises a tank body which defines an accommodating cavity; a tank cover assembly comprising a tank cover and a position triggering device. The tank cover is arranged to cover the tank body. The tank cover defines a suction channel communicating with the accommodating cavity and also defines a movement space. The position triggering device is movably arranged in the movement space. The wastewater tank also comprises a filter assembly which is detachably arranged in the suction channel. When the filter assembly is installed in the suction channel, the filter assembly abuts against the position triggering device and presses the position triggering device to retract into the movement space. When the filter assembly is separated from the suction channel, the position triggering device extends from the movement space and prevents the wastewater tank from being installed on the machine body.

[0007] According to the wastewater tank of the present invention, as the position triggering device is movably arranged in the movement space, when the user removes the filter assembly from the tank cover for cleaning, replacement, or any other operation that causes the filter assembly to be separated from the tank cover, and tries to reinstall the wastewater tank on the machine body without reinstalling the filter assembly, the position triggering device will extend out of the movement space and prevent the wastewater tank from being installed on the machine body, thus reminding the user that the filter assembly has not been reinstalled on the tank cover. In this way, it can avoid the situation where the cleaning device operates without the filter assembly installed, in which case the wastewater tank may not be able to suck water or the suction device may be damaged by water, thereby improving the reliability of the cleaning device and helping to improve the user experience.

[0008] In some embodiments, the movement space extends vertically, the top wall of the tank cover comprising an opening communicating with the movement space, and the position triggering device moves in and out through the opening. In this way, the movement of the position triggering device is relatively simple and easy to implement.

[0009] In some embodiments, the tank cover comprises an installation shoulder arranged in the suction channel, at least part of the structure of the filter assembly resting on the installation shoulder when installed in the suction channel, and the opening being arranged on the installation shoulder.

[0010] In this way, once the filter assembly rests on the installation shoulder, it is installed in the suction channel at the same time and can directly cooperate with the position triggering device, for example, by pressing against the upper side of the position triggering device. The overall structure is relatively simple, eliminating the need of arranging an intermediate transmission structure between the filter assembly and the position triggering device if the suction channel and the movement space were far apart, which would complicate the overall structure. In addition, when the filter assembly is installed in place, the position triggering device is hidden inside the tank cover, improving the appearance consistency and enhancing the aesthetic aspect.

[0011] In some embodiments, the tank cover is provided with a handle. The handle is located on the side of the wastewater tank opposite to the machine body. The movement space and the position triggering device are both located on the side of the suction channel facing the handle.

[0012] Since the handle side is usually the last part of the wastewater tank to enter the accommodating space of the machine body when the wastewater tank is installed thereon, arranging the position triggering device near the handle can not only reduce the collision between the position triggering device and the machine body, but also prevent the position triggering device from being stuck in the recesses on the machine body configured to cooperate with the wastewater tank or for other functions, resulting in the dysfunction of the position triggering device.

[0013] In some embodiments, the position triggering device comprises: a stopper, which is movably arranged in the movement space to extend from or retract into the movement space; and a driving member, which is connected with the stopper to drive the stopper to move.

[0014] In this way, the structure of the position triggering device is relatively simple and easy to manufacture and assemble.

[0015] In some embodiments, the driving member is configured to always exert a force on the stopper towards the opening of the movement space.

[0016] In this way, when the filter assembly is separated from the tank cover, the driving member can automatically drive the stopper to extend out of the movement space.

[0017] In some embodiments, the driving member comprises an elastic member.

[0018] In this way, when the filter assembly is installed on the tank cover, the filter assembly presses the stopper to retract into the movement space. The stopper compresses the driving member which stores energy. When the filter assembly is removed from the tank cover, the driving member drives the stopper to extend from the movement space. Moreover, the driving member has a low cost and a long service life.

[0019] In some embodiments, the tank cover is provided with a limiting structure, which is configured to limit the stopper when the stopper extends from the movement space.

[0020] In this way, it can prevent the stopper from detaching from the movement space during its movement, thus ensuring the reliability of the position triggering device.

[0021] In some embodiments, the stopper comprises: a first section and a second section which are connected and arranged in sequence along the movement direction. The second section is connected with the driving member. The dimension of the first section in the direction perpendicular to the movement direction of the stopper is smaller than that of the second section in the same direction. The limiting structure is arranged at the opening of the movement space. When the stopper extends from the movement space, the limiting structure abuts against the second section.

[0022] Such arrangement allows the first section to extend from the movement space to prevent the wastewater tank from being installed on the machine body without the filter assembly, and also allows the limiting cooperation between the limiting structure and the second section to avoid the stopper from detaching from the movement space.

[0023] In some embodiments, the end face of the stopper away from the driving member is parallel to the plane of the opening of the movement space; when the filter assembly drives the stopper to retract into the movement space, the end face of the stopper away from the driving member is flush with the plane of the opening of the movement space.

[0024] It should be understood that the "plane of the opening" means the plane in which the opening is located or extends. Such configuration not only ensures that the filter assembly can rest stably in the predetermined installation position, but also ensures that the filter assembly is always in contact with the stopper, so that the position triggering device is sensitive to the detachment of the filter assembly from the tank cover.

[0025] In some embodiments, the filter assembly comprises: an installation frame, which is detachably mounted on the tank cover, when the filter assembly is installed in the suction channel, the installation frame abuts against the position triggering device; and a filter element, which is provided on the installation frame and located in the suction channel.

[0026] In this way, the cooperation between the installation frame and the position triggering device can realize the in-position detection of the filter assembly.

[0027] In some embodiments, the periphery of the installation frame is provided with a protruding abutting portion which abuts against the position triggering device.

[0028] In this way, the cooperation between the installation frame and the position triggering device is simple and reliable, and easy to manufacture and implement.

[0029] In some embodiments, one of the installation frame and the tank cover is provided with a fixing structure, and the other is provided with a matching structure. When the installation frame is installed on the tank cover, the fixing structure cooperates with the matching structure to fix the installation frame.

[0030] Such arrangement ensures the installation stability of the filter assembly when it is installed on the tank cover and subjected to the reaction force of the position triggering device. Thus, the reliability of the filter assembly is further improved.

[0031] In some embodiments, a matching gap is formed between the tank cover and the installation frame. The side wall of the installation frame is provided with a fixing protrusion which constitutes the fixing structure. The inner wall of the suction channel is provided with a matching protrusion which constitutes the matching structure. The heights of the fixing protrusion and the matching protrusion are both smaller than the width of the matching gap. When the filter assembly is installed in the suction channel, the fixing protrusion is located on the inner side of the matching protrusion, and the fixing protrusion and the matching protrusion cooperate with each other in the extension direction of the suction channel.

[0032] By "inner side", it means downstream of airflow sucked in. In this way, when installing the filter assembly on the tank cover, the user may apply a pressure to the installation frame so that the fixing protrusion is forced to move from the upper side of the matching protrusion to the lower side, realizing the snap-fit cooperation between the two. This configuration ensures the installation stability of the filter assembly. Moreover, the installation frame is fixed in a relatively simple way and easy to manufacture and assemble.

[0033] The present invention also provides a cleaning device, which comprises: a machine body; a cleaning assembly for cleaning the surface to be cleaned; the wastewater tank according to the first aspect of the present invention, which is arranged on the machine body and configured to store the wastewater collected from the cleaning assembly.

[0034] By providing the above-mentioned wastewater tank, the cleaning device of the present invention can remind users to install the filter assembly when reinstalling the wastewater tank. Therefore, it can avoid damage to the suction device when the cleaning device operates without the filter assembly installed, improve the reliability of the cleaning device, and help to improve the user experience.

[0035] The present invention also provides a cleaning system, which comprises: the cleaning device according to the second aspect of the present invention; and a cleaning base station. The cleaning base station is configured to clean at least the cleaning assembly of the cleaning device.

[0036] According to the cleaning system of the present invention, by providing the cleaning device of the above-mentioned embodiments, the reliability of the system can be improved, which is beneficial to enhancing the user experience.Description of the Drawings

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative efforts. Figure 1 is a cross-sectional view of the wastewater tank according to an embodiment of the present invention; Figure 2 is an enlarged view of the part A circled in Figure 1; Figure 3 is a schematic view of the structure of the tank cover assembly according to an embodiment of the present invention; Figure 4 is a schematic view of the filter assembly separated from the tank cover assembly according to an embodiment of the present invention; Figure 5 is a schematic view of the filter assembly assembled to the tank cover assembly according to an embodiment of the present invention. List of the Numerical References

[0038] 100 - Wastewater tank; 1 - Tank body; 11 - Accommodating cavity; 12 - Wastewater inlet channel; 121 - Communication port; 2 - Tank cover assembly; 21 - Tank cover; 211 - Suction channel; 212 - Movement space; 213 - Handle; 214 - Installation shoulder; 215 - Limiting structure; 216 - Matching structure; 22 - Position triggering device; 221 - Stopper; 2211 - First section; 2212 - Second section; 222 - Driving member; 5 - Filter assembly; 51 - Installation frame; 511 - Abutting portion; 512 - Fixing structure; 52 - Filter element. Specific Embodiments

[0039] In order to make the above-mentioned objectives, features, and advantages of the embodiments of this application more clearly understandable, the technical solutions of the embodiments of this invention will be described clearly and completely in conjunction with the accompanying drawings of the embodiments of this invention. Apparently, the described embodiments are only a part of the embodiments of this invention, rather than all the embodiments. Based on the embodiments in this invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this invention.

[0040] With the development of social economy and the improvement of people's living standards, cleaning devices such as floor washers and vacuum cleaners are increasingly applied in people's daily lives due to their high cleaning efficiency, time-saving, and laborsaving advantages. Most models of floor washers on the market need to create a negative pressure state within the inner cavity of the wastewater tank through a suction channel on the wastewater tank cover, so as to suck the wastewater on the ground into the wastewater tank. Moreover, in order to prevent water ingress into electrical components such as the suction motor, a filter assembly is installed in the suction channel. However, after cleaning the wastewater tank, users may forget to reinstall the filter assembly. If the filter assembly is not installed, the cleaning device may not be able to suck water, or wastewater may be sucked into the suction motor, resulting in damage to the main motor.

[0041] In view of this, the present invention provides a wastewater tank, a cleaning device, and a cleaning system wherein a position triggering device of the filter assembly is movably arranged at a movement space. When the user removes the filter assembly from the tank cover for cleaning, replacement, or any other operation that causes the filter assembly to be separated from the tank cover, and then reinstalls the wastewater tank back into the machine body without reinstalling the filter assembly on the tank cover, the position triggering device will be extending from the movement space and prevent the wastewater tank from being installed on the machine body, thereby reminding the user that the filter assembly has not been reinstalled on the tank cover. In this way, it can avoid the situations where the cleaning device operates without the filter assembly installed, in which the wastewater tank may not be able to suck water or the suction device may be damaged by water, thereby improving the reliability of the cleaning device, and helping to improve the user experience.

[0042] The wastewater tank 100 of the embodiment of the first aspect of the present invention is described below in conjunction with FIGS. 1 - 5.

[0043] The wastewater tank 100 of this embodiment can be used in cleaning devices, such as floor washers, cleaning robots, vacuum cleaners with mopping function, etc. The cleaning device can be household cleaning device or industrial cleaning device, and this application does not limit this.

[0044] The cleaning device may comprise a machine body and a cleaning assembly. The machine body may receive the wastewater tank 100. The wastewater tank 100 is detachably arranged on the machine body. The machine body can also provide an installation platform and support for other components of the cleaning device. The cleaning assembly can be arranged at the bottom end of the machine body, allowing it to move along the surface to be cleaned and perform cleaning tasks. For example, the cleaning assembly may comprise a roller brush, a side brush, etc. The side brush can gather dirt around the cleaning assembly towards the center, and the roller brush can suck in the dirt and wastewater, etc.

[0045] Referring to FIGS. 1 and 2, the wastewater tank 100 comprises a tank body 1, a tank cover assembly 2, and a filter assembly 5.

[0046] The tank body 1 defines an accommodating cavity 11. The accommodating cavity 11 can be used to store wastewater and dirt sucked in during the operation of the cleaning device. The tank body 1 can be cylindrical, rectangular, or irregular in shape. The shape of the tank body 1 is adapted to the shape of the space on the machine body for accommodating the tank body 1. The top of the tank body 1 can be opened to form a wastewater discharge port. The tank body 1 also comprises a wastewater inlet channel 12 which extends along the height direction of the tank body 1. The wastewater inlet channel 12 comprises a communication port 121 communicating with the accommodating cavity 11. For example, a channel partition is arranged in the accommodating cavity 11 and is in the form of a cylinder with both ends open. The channel partition extends along the height direction of the tank body 1 and defines the wastewater inlet channel 12. The communication port 121 is located at the top end of the channel partition.

[0047] The tank cover assembly 2 comprises a tank cover 21 and a position triggering device 22. The tank cover 21 covers the tank body 1. For example, the tank cover 21 covers the wastewater discharge port of the tank body 1 to seal the wastewater discharge port. When the wastewater in the tank body 1 reaches the allowable capacity or in other cases where the wastewater needs to be emptied, the tank cover 21 can be removed from the tank body 1, so that wastewater can be discharged from the wastewater discharge port.

[0048] The tank cover 21 defines a suction channel 211, which communicates with the accommodating cavity 11. When the cleaning device is operating, a suction device on the machine body, such as a suction motor, can create a negative pressure state in the accommodating cavity 11 through the suction channel 211, so as to suck the wastewater and dirt on the surface to be cleaned from the cleaning assembly into the wastewater tank 100.

[0049] The tank cover 21 also defines a movement space 212. The position triggering device 22 is movably arranged at the movement space 212. The movement space 212 can accommodate the position triggering device 22. The movement of the position triggering device 22 can be at least one of translation and rotation. The filter assembly 5 is arranged in the suction channel 211. The filter assembly 5 can prevent the wastewater droplets and dirt in the wastewater tank 100 from reaching the suction device through the suction channel 211, resulting in damage to the suction device. The filter assembly 5 is detachably arranged in the tank cover 21, so as to be removed for cleaning or replacement after having worked for a period of time.

[0050] When the filter assembly 5 is installed in the suction channel 211, the filter assembly 5 abuts against the position triggering device 22 and drives the position triggering device 22 to retract into the movement space 212. At this time, the wastewater tank 100 can be normally installed on the machine body. When the filter assembly 5 is separated from the suction channel 211, the position triggering device 22 extends out of the movement space 212 and prevents the wastewater tank 100 from being installed on the machine body. It should be understood that the opening of the movement space 212 can be provided at any position on the surface of the tank cover 21 that is designed to be in contact with the machine body. Therefore, when the position triggering device 22 extends out of the movement space 212, it exceeds the contacting surface of the tank cover 21 and the machine body, so that the wastewater tank 100 cannot be installed back to the target position on the machine body when the filter assembly 5 is not installed in place. This configuration can thus remind the user to install the filter assembly 5 back on the tank cover 21.

[0051] According to the wastewater tank 100 of the embodiment of the present invention, the position triggering device 22 is movably arranged at the movement space 212. When the user removes the filter assembly 5 from the tank cover 21 for cleaning, replacement, or any other operation that causes the filter assembly 5 to be separated from the tank cover 21, and installs the wastewater tank 100 back into the machine body without reinstalling the filter assembly 5 on the tank cover 21, the position triggering device 22 will extend out of the movement space 212 and prevent the wastewater tank 100 from being installed on the machine body, thereby reminding the user that the filter assembly 5 has not been reinstalled on the tank cover 21. In this way, it can avoid the situations where the cleaning device operates without the filter assembly installed, in which case the wastewater tank 100 may not be able to suck water or the suction device may be damaged by water, thereby improving the reliability of the cleaning device, and helping to improve the user experience.

[0052] In some embodiments, as shown in FIGS. 2 and 3, the movement space 212 extends vertically. Here, the top wall of the tank cover 21 comprises an opening communicating with the movement space 212. The position triggering device 22 moves in and out through the opening, that is, the position triggering device 22 can move in and out vertically. In this way, the movement form of the position triggering device 22 is relatively simple and easy to implement.

[0053] In some alternative embodiments, the movement space 212 may extend substantially horizontally on the tank cover 21, so that the position triggering device 22 moves substantially horizontally. In such configuration, the opening may be arranged on the side wall of the tank cover 21.

[0054] In some embodiments, as shown in FIGS. 2 and 3, the tank cover 21 comprises an installation shoulder 214 provided on the periphery of the suction channel 211. For example, taking the perspective of the wastewater tank 100 placed vertically, the installation shoulder 214 can be formed by a recessed platform downward from the top wall of the tank cover 21. The suction channel 211 passes through the bottom wall of the installation shoulder 214, and at least part of the structure of the suction channel 211 extends into the accommodating cavity 11 of the tank body 1. At least part of the structure of the filter assembly 5 rests on the installation shoulder 214. The opening of the movement space 212 is located on the installation shoulder 214. For example, the opening of the movement space 212 is located on the bottom wall of the installation shoulder 214 and is separated from the suction channel 211.

[0055] In this way, when the filter assembly 5 rests on the installation shoulder 214, it is installed in the suction channel 211 at the same time, and can also directly cooperate with the position triggering device 22, for example, by pressing against the upper side of the position triggering device 22. The overall structure is relatively simple, eliminating the need of providing an intermediate transmission structure between the filter assembly 5 and the position triggering device 22 if the suction channel 211 and the movement space 212 were far apart, which would complicate the overall structure. In addition, when the filter assembly 5 is installed in place, the position triggering device can be hidden inside the tank cover 21, improving the appearance consistency and enhancing the aesthetic aspect.

[0056] In some embodiments, as shown in FIGS. 2 and 3, a handle 213 is provided on the tank cover 21. The handle 213 is located on the side of the wastewater tank 100 opposite to the machine body. For example, when the wastewater tank 100 is installed in the accommodating space on the side of the machine body, the handle 213 is located on the side of the wastewater tank 100 and on the side of the tank cover 21 away from the machine body. The movement space 212 and the position triggering device 22 are both located on the side of the suction channel 211 facing the handle 213. Since the handle 213 is usually the last part of the wastewater tank 100 to enter the accommodating space of the machine body when the wastewater tank 100 is installed there, arranging the position triggering device 22 near the handle 213 can not only reduce the collision between the position triggering device 22 and the machine body, but also prevent the position triggering device 22 from being stuck in the recesses on the machine body configured to cooperate with the wastewater tank 100 or for achieving other functions, resulting in the failure of the function of the position triggering device 22.

[0057] In some embodiments, as shown in FIGS. 2 and 3, the position triggering device 22 comprises a stopper 221 and a driving member 222. Specifically, the stopper 221 may be in the shape of a block or a pin. The dimensions at different sections of the stopper 221 may be the same, or the stopper may be have multiple parts with different dimensions or shapes according to needs. The stopper 221 is movably arranged in the movement space 212 to extend from or retract into the movement space 212. The driving member 222 is connected with the stopper 221 to drive the stopper 221 to move. For example, when the filter assembly 5 is separated from the tank cover 21, the driving member 222 drives the stopper 221 to extend from the movement space 212. In this way, the structure of the position triggering device 22 is relatively simple and easy to manufacture and assemble.

[0058] In some embodiments, the driving member 222 is configured to always exert a force on the stopper 221 towards the opening of the movement space 212. In this way, when the filter assembly 5 is separated from the tank cover 21, the driving member 222 can automatically drive the stopper 221 to extend out of the movement space.

[0059] In some embodiments, as shown in FIGS. 2 and 3, the driving member 222 comprises an elastic member. For example, the driving member 222 is a spring. In this way, when the filter assembly 5 is installed on the tank cover 21, the filter assembly 5 presses the stopper 221 to retract into the movement space 212. The stopper 221 compresses the driving member 222 which stores energy. When the filter assembly 5 is removed from the tank cover 21, the driving member 222 drives the stopper 221 to extend from the movement space 212. Moreover, the driving member 222 has a low cost and a long service life.

[0060] In some embodiments, as shown in FIGS. 2 and 3, a limiting structure 215 is provided on the tank cover 21. When the stopper 221 extends from the movement space 212, the limiting structure 215 limits the position of the stopper 221. In this way, it prevents the stopper 221 from detaching from the movement space 212 during its movement in the movement space 212, thus ensuring the reliability of the position triggering device 22.

[0061] In some embodiments, as shown in FIG. 3, the stopper 221 comprises a first section 2211 and a second section 2212. The first section 2211 and the second section 2212 are connected and arranged in sequence along the movement direction. The first section 2211 is located on the side of the second section 2212 away from the driving member 222, which means the first section 2211 is located above the second section 2212 and the second section 2212 is connected with the driving member 222. The dimension of the first section 2211 in the direction perpendicular to the movement direction of the stopper 221 is smaller than that of the second section 2212 in the same direction. For example, when the cross-section of the stopper 221 is circular, the diameter of the first section 2211 is smaller than that of the second section 2212; when the cross-section of the stopper 221 is rectangular, the length or width of the first section 2211 is smaller than that of the second section 2212. The limiting structure 215 is arranged at the opening of the movement space 212. When the stopper 221 extends from the movement space 212, the limiting structure 215 abuts against the second section 2212. Such arrangement allows the first section 2211 to extend from the movement space 212 to prevent the wastewater tank 100 from being installed on the machine body without the filter assembly 5, and also allows the limiting cooperation between the limiting structure 215 and the second section 2212 to avoid the stopper 221 from detaching from the movement space 212.

[0062] In some embodiments, as shown in FIGS. 2 and 3, the end face of the stopper 221 away from the driving member 222 is parallel to the plane in which the opening of the movement space 212 is located. When the filter assembly 5 presses the stopper 221 to retract into the movement space 212, the end face of the stopper 221 away from the driving member 222 is flush with the plane in which the opening of the movement space 212 is located. In other words, the upper surface of the stopper 221 is flush with the bottom wall of the installation shoulder 214. Moreover, when the bottom wall of the installation shoulder 214 is inclined with respect to the horizontal plane, the upper surface of the stopper 221 is an inclined plane parallel to the bottom wall of the installation shoulder 214. Such configuration not only ensures that the filter assembly 5 can rest stably in the predetermined installation position, but also ensures that the filter assembly 5 is always in contact with the stopper 221, so that the position triggering device 22 is sensitive to the detachment of the filter assembly 5 from the tank cover 21.

[0063] In some embodiments, as shown in FIGS. 4 and 5, the filter assembly 5 comprises an installation frame 51 and a filter element 52. Specifically, the installation frame 51 is detachably mounted on the tank cover 21. For example, the installation frame 51 may be in the shape of a cylinder with both ends open. Part of the installation frame 51 may be adapted to the installation shoulder 214 on the tank cover 21 to easily rest on the installation shoulder 214, and another part can be adapted to the suction channel 211 for easy insertion into the suction channel 211 and providing good support for the filter element 52. Since the installation frame 51 has a certain rigidity, when the filter assembly 5 is installed in the suction channel 211, the installation frame 51 can abut against the position triggering device 22. The filter element 52 is arranged in the installation frame 51 and is located in the suction channel 211. The filter element 52 can be a HEPA filter, a filter screen, etc. In this way, the cooperation between the installation frame 51 and the position triggering device 22 can realize the in-position detection of the filter assembly 5.

[0064] In some embodiments, as shown in FIGS. 2 and 3, a protruding abutting portion 511 is provided on the periphery of the installation frame 51. The abutting portion 511 abuts against the position triggering device 22. For example, the abutting portion 511 can abut against the top end of the stopper 221. In this way, the cooperation between the installation frame 51 and the position triggering device 22 is simple and reliable, and easy to manufacture and implement.

[0065] In some embodiments, as shown in FIGS. 4 and 5, one of the installation frame 51 and the tank cover 21 is provided with a fixing structure 512, and the other is provided with a matching structure 216. When the installation frame 51 is installed on the tank cover 21, the fixing structure 512 cooperates with the matching structure 216 to fix the installation frame 51. For example, the fixing structure 512 and the matching structure 216 can be in the form of snap-fit, plug-in fit, bolt connection, etc. Such configuration ensures the installation stability of the filter assembly 5 when it is installed on the tank cover 21 and subjected to the reaction force of the position triggering device 22, thereby further improving the reliability of the filter assembly 5.

[0066] In some embodiments, referring to FIG. 5, a matching gap is formed between the tank cover 21 and the installation frame 51. The side wall of the installation frame 51 is provided with a fixing protrusion which constitutes the fixing structure 512. The inner wall of the suction channel 211 is provided with a matching protrusion which constitutes the matching structure 216. The heights of the fixing protrusion and the cooperation protrusion are both smaller than the width of the matching gap. When the filter assembly 5 is installed in the suction channel 211, the fixing protrusion is located on the inner side of the matching protrusion relative to the suction channel 211, and the fixing protrusion and the matching protrusion cooperate with each other in the extension direction of the suction channel 211. In this way, when the filter assembly 5 is installed on the tank cover 21, the user may apply a pressure to the installation frame 51 so that the fixing protrusion is forced to move from the upper side to the lower side of the matching protrusion, realizing a snap-fit cooperation. This configuration ensures the installation stability of the filter assembly 5. Moreover, the installation frame 51 is fixed in a relatively simple way and easy to manufacture and assemble.

[0067] Of course, in some other embodiments, one of the fixing structure 512 and the matching structure 216 may be a protruding structure, and the other may be a groove structure. In this way, both the fixing structure 512 and the matching structure 216 are relatively simple and easy to implement.

[0068] The following describes the cleaning device according to the embodiments of the second aspect of the present invention.

[0069] The cleaning device of this embodiment may be a floor washer, a cleaning robot, a vacuum cleaner with a mopping function, etc. The cleaning device can be household cleaning device or industrial cleaning device, which is not limited in this invention. The cleaning device may comprise a machine body, a cleaning assembly, and the wastewater tank 100 of the above - mentioned embodiments.

[0070] Specifically, the machine body is configured to accommodate the wastewater tank 100.

[0071] The wastewater tank 100 is detachably arranged on the machine body. The machine body may also serve as an installation platform and support for other components of the cleaning device, and provide an operation handle 213 for users, etc.

[0072] In the cleaning device of the present invention, due to the wastewater tank 100 of the above-mentioned embodiments, the user can be reminded to install the filter assembly 5 on the tank cover 21 when reinstalling the wastewater tank 100 to the machine body. Thus, it can avoid the damage of the suction device when the cleaning device operates without the filter assembly 5 installed, improve the reliability of the cleaning device, and help to improve the user experience.

[0073] The following describes the cleaning system according to the third aspect of the present invention.

[0074] The cleaning system of this embodiment comprises a cleaning base station and the cleaning device of the above-mentioned embodiments. The cleaning base station is configured to clean at least the cleaning assembly of the cleaning device.

[0075] According to the cleaning system of the embodiment of the present invention, by providing the cleaning device of the above-mentioned embodiments, the reliability of the system can be improved, which is beneficial to enhancing the user experience.

[0076] In this specification, each embodiment or implementation mode is described in a progressive manner. The focus of each embodiment is on the differences with other embodiments, and the same or similar parts among the various embodiments can be referred to each other.

[0077] It should be noted that the expressions "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. Moreover, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures, or characteristics in combination with an embodiment, it is within the scope of knowledge of those skilled in the art to implement such features, structures, or characteristics in combination with other embodiments, whether explicitly described or not.

[0078] Generally, terms should be understood at least partially based on the context of their use. For example, at least in part depending on the context, the term "one or more" used in the text can be used to describe the meaning of any feature, structure, or characteristic in the singular sense, or can be used to describe the combination of features, structures, or characteristics in the plural sense. Similarly, at least partially depending on the context, terms such as "a" or "the" can also be understood as singular usage or plural usage.

[0079] It should be easily understood that the terms "on...", "above...", and "over..." in this disclosure should be interpreted in the broadest way. Thus, "on..." not only means "directly on top of something", but also includes the meaning of "on something" with intermediate features or layers therebetween. And "above..." or "over..." not only includes the meaning of "above something" or "over something", but can also include the meaning of "above something" or "over something" without intermediate features or layers (i.e., directly on top of something).

[0080] Finally, it should be noted that: the above-mentioned embodiments are only used to illustrate the technical solutions of this invention, not to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or equivalently replace some or all of the technical features. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A wastewater tank (100) for a cleaning device, characterized in that the cleaning device comprises a machine body, and the wastewater tank (100) comprises: - a tank body (1) which defines an accommodating cavity (11), - a tank cover assembly (2) comprising a tank cover (21) and a position triggering device (22), the tank cover (21) being arranged to cover the tank body (1), the tank cover (21) defining a suction channel (211) communicating with the accommodating cavity (11), the tank cover (21) also defining a movement space (212), in which the position triggering device (22) is movably arranged, - a filter assembly (5) which is detachably installed in the suction channel (211), wherein, when the filter assembly (5) is installed in the suction channel (211), the filter assembly (5) abuts against the position triggering device (22) and drives the position triggering device (22) to retract into the movement space (212), and when the filter assembly (5) is separated from the suction channel (211), the position triggering device (22) extends from the movement space (212) and prevents the wastewater tank (100) from being installed on the machine body.

2. The wastewater tank (100) according to claim 1, characterized in that the movement space (212) extends vertically, the top wall of the tank cover (21) comprising an opening communicating with the movement space (212), the position triggering device (22) moving in and out through the opening.

3. The wastewater tank (100) according to claim 2, characterized in that the tank cover (21) comprises an installation shoulder (214) arranged in the suction channel (211), the filter assembly (5) resting on the installation shoulder (214) when installed in the suction channel (211), and the opening being arranged on the installation shoulder (214).

4. The wastewater tank (100) according to any one of claims 1 to 3, characterized in that the tank cover (21) is provided with a handle (213), which is located on the side of the wastewater tank (100) opposite to the machine body; the movement space (212) and the position triggering device (22) being both located on the side of the suction channel (211) facing the handle (213).

5. The wastewater tank (100) according to any one of claims 1 to 4, characterized in that the position triggering device (22) comprises: - a stopper (221) which is movably arranged in the movement space (212) to extend from or retract into the movement space (212), - a driving member (222) which is connected with the stopper (221) to drive the stopper (221) to move.

6. The wastewater tank (100) according to claim 5, characterized in that the driving member (222) is configured to always exert a force on the stopper (221) towards the opening of the movement space (212), the driving member (222) comprising for example an elastic member.

7. The wastewater tank (100) according to claim 5 or 6, characterized in that the tank cover (21) is provided with a limiting structure (215), which is configured to limit the stopper (221) when the stopper (221) extends from the movement space (212).

8. The wastewater tank (100) according to claim 7, characterized in that the stopper (221) comprises a first section (2211) and a second section (2212), which are connected and arranged in sequence along the movement direction, the second section (2212) being connected with the driving member (222); the dimension of the first section (2211) in the direction perpendicular to the movement direction of the stopper (221) being smaller than that of the second section (2212) in the same direction; the limiting structure (215) being arranged at the opening of the movement space (212), when the stopper (221) extends from the movement space (212), the limiting structure (215) abutting against the second section (2212).

9. The wastewater tank (100) according to any one of claims 5 to 8, characterized in that the end face of the stopper (221) away from the driving member (222) is parallel to the plane of the opening of the movement space (212); when the filter assembly (5) drives the stopper (221) to retract into the movement space (212), the end face of the stopper (221) away from the driving member (222) is flush with the plane of the opening of the movement space (212).

10. The wastewater tank (100) according to any one of claims 1 to 9, characterized in that the filter assembly (5) comprises: - an installation frame (51) which is detachably matched with the tank cover (21), when the filter assembly (5) is installed in the suction channel (211), the installation frame (51) abuts against the position triggering device (22), - a filter element (52) which is provided on the installation frame (51) and located in the suction channel (211).

11. The wastewater tank (100) according to claim 10, characterized in that the periphery of the installation frame (51) is provided with a protruding abutting portion (511), which abuts against the position triggering device (22).

12. The wastewater tank (100) according to claim 10 or 11, characterized in that one of the installation frame (51) and the tank cover (21) is provided with a fixing structure (512), and the other is provided with a matching structure (216), when the installation frame (51) is installed on the tank cover (21), the fixing structure (512) cooperates with the matching structure (216) to fix the installation frame (51).

13. The wastewater tank (100) according to claim 12, characterized in that a matching gap is formed between the tank cover (21) and the installation frame (51), the side wall of the installation frame (51) being provided with a fixing protrusion which constitutes the fixing structure (512), the inner wall of the suction channel (211) being provided with a matching protrusion which constitutes the matching structure (216), the heights of the fixing protrusion and the matching protrusion being both smaller than the width of the matching gap, when the filter assembly (5) is installed in the suction channel (211), the fixing protrusion being located on the inner side of the matching protrusion, and the fixing protrusion and the matching protrusion cooperating with each other in the extension direction of the suction channel (211).

14. A cleaning device, characterized by comprising: - a machine body, - a cleaning assembly for cleaning the surface to be cleaned, - the wastewater tank (100) according to any one of claims 1 to 13, the wastewater tank (100) being installed on the machine body and configured to store the wastewater collected from the cleaning assembly.

15. A cleaning system, characterized by comprising: - the cleaning device according to claim 14, - a cleaning base station, configured to clean at least the cleaning assembly of the cleaning device.

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