Cleaning equipment and cleaning system

Abstract

The embodiment of the invention provides cleaning equipment and a cleaning system. The cleaning equipment comprises a sewage tank, a first light conduction structure and a first optical sensor. A liquid storage cavity is formed in the sewage tank, and the first light conduction structure is fixedly arranged at the bottom of the liquid storage cavity and arranged in the height direction of the sewage tank. The first optical sensor can emit a first optical signal along the top of the first optical conduction structure and receive the first optical signal emitted by the first optical conduction structure so as to carry out water fullness detection on the sewage tank. According to the cleaning equipment provided by the embodiment of the invention, the full water state of the sewage tank can be judged by detecting whether the first optical sensor receives the first optical signal emitted by the first optical conduction structure or not, the real-time performance and accuracy of full water detection of the sewage tank are improved, and the situation that the cleaning equipment is interrupted due to the fact that the sewage tank is full of water in a self-cleaning program is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cleaning equipment, in particular to a cleaning equipment and a cleaning system. BACKGROUND

[0002] The cleaning equipment is a kind of equipment capable of automatically cleaning the surface to be cleaned, which has been widely used in people's daily life and work. For example, the cleaning equipment can include a scrubber. The cleaning equipment cleans the surface to be cleaned by a high-speed rotating brush, and collects the sewage generated and collected during the work to the sewage tank for unified cleaning by the user.

[0003] In order to avoid too much dirt in the sewage tank from overflowing, the sewage tank needs to be water full detection. In related technologies, a probe is usually arranged in the sewage tank, when the water level in the sewage tank rises to contact the probe, the conductivity of the dirt makes a loop between the probes, thereby triggering a detection signal to inform the user to clean the sewage tank in time.

[0004] However, due to the complex composition of the dirt, the probe is easy to be corroded. At the same time, the hair or other dirt in the dirt is easy to adhere to the surface of the probe, resulting in low detection accuracy of the probe. Therefore, how to improve the real-time and accuracy of the water full detection of the sewage tank has become a technical problem to be solved. SUMMARY

[0005] The embodiments of the present application provide a cleaning equipment and a cleaning system, which can improve the real-time and accuracy of the water full detection of the sewage tank.

[0006] In a first aspect, the embodiments of the present application provide a cleaning equipment, which comprises:

[0007] a sewage tank having a liquid storage cavity;

[0008] a first light transmission structure fixedly arranged at the bottom of the liquid storage cavity, and the first light transmission structure is arranged along the height direction of the sewage tank;

[0009] a first optical sensor located below the first light transmission structure along the height direction of the sewage tank, the optical sensor can emit a first light signal to the top of the first light transmission structure, and can receive the first light signal emitted by the first light transmission structure to detect the water full state of the sewage tank.

[0010] The cleaning equipment provided by the embodiments of the present application is fixedly arranged at the bottom of the liquid storage cavity along the height direction of the sewage tank, and the first optical sensor can emit a first light signal along the top of the first light transmission structure. Therefore, by detecting whether the first optical sensor receives the first light signal emitted by the first light transmission structure, the water full state of the sewage tank can be judged, and the real-time of the water full detection of the sewage tank is improved.

[0011] Meanwhile, in the process of performing the floor cleaning operation or the self-cleaning operation, the cleaning device can first detect whether the current sewage tank is full of water through the first optical sensor. If the detection result shows that the liquid storage cavity is in the full state, the cleaning device can timely issue a prompt, which can avoid the interruption of the operation or the damage of the device caused by the water entering the main motor due to the full load of the sewage tank in the process of the floor cleaning operation or the self-cleaning operation, and ensure the continuity of the operation process and the safety of the device use.

[0012] In some embodiments, the sewage tank is provided with a sewage inlet pipe, and the first light transmission structure and the sewage inlet pipe are arranged at different liquid levels when the cleaning device is lying down for use, so as to ensure the detection effect of the first light transmission structure.

[0013] In the height direction of the sewage tank, the height of the first light transmission structure is lower than the height of the sewage inlet pipe.

[0014] In this way, the exit point of the first light signal can be spaced apart from the sewage inlet pipe. When the liquid level in the liquid storage cavity rises to the top of the first light transmission structure, the first optical sensor can immediately sense the change in the liquid level and trigger the full water alarm in advance, thereby reserving a certain buffer time and ensuring that the cleaning device can stop working or drain water before the liquid storage cavity is completely full, thereby avoiding the problem of overflow of dirt in the liquid storage cavity or water entering the suction motor.

[0015] In some embodiments, the sewage tank is further provided with a support member, which is arranged on the side of the sewage inlet pipe close to the first light transmission structure, and one end of the support member is connected with the sewage inlet pipe and the other end is connected with the first light transmission structure, so as to enhance the installation stability of the first light transmission structure in the liquid storage cavity, prevent the first light transmission structure from deviating or vibrating during the movement of the cleaning device or the shaking of the dirt, and ensure the reliability of the full water detection.

[0016] In some embodiments, the sewage tank has opposite first and second side walls in the circumferential direction, and when the sewage tank is in the lying state, the first side wall is adjacent to the surface to be cleaned and the second side wall is away from the surface to be cleaned.

[0017] The first light transmission structure is arranged on the side of the liquid storage cavity close to the second side wall.

[0018] In this way, when the cleaning device is in the lying state, a higher actual liquid level is required to submerge the first light transmission structure located at the second side wall, thereby increasing the actual liquid level height for triggering the full water alarm, avoiding the early alarm caused by the inclination of the liquid surface in the inclined or lying state of the cleaning device, and ensuring that the volume of the liquid storage cavity can be fully utilized.

[0019] In some embodiments, the side of the first light transmission structure opposite to the first optical sensor is in contact with the inner bottom wall of the sewage tank, which can reduce the air gap between the first light transmission structure and the sewage tank, and avoid the influence of the air gap on the propagation of the first light signal. At the same time, when the air gap between the first light transmission structure and the inner bottom wall of the sewage tank is eliminated, the problem that impurities in the dirty deposit in the gap between the first light transmission structure and the inner bottom wall of the sewage tank, causing the first light signal to fail to propagate smoothly, can be avoided, ensuring the stability of the first light signal propagation, and thus improving the accuracy and reliability of the sewage tank fullness detection.

[0020] The first optical sensor is located outside the sewage tank, which can avoid direct contact between the first optical sensor and the dirty, avoid the problem of inaccurate detection caused by corrosion, ensure the accuracy and reliability of the sewage tank fullness detection, and avoid the first optical sensor occupying the internal space of the liquid storage cavity, causing the effective volume of the liquid storage cavity to decrease.

[0021] In some embodiments, the cleaning device further comprises:

[0022] The second light transmission structure is fixedly arranged in the liquid storage cavity and is arranged along the height direction of the sewage tank, and the mounting height of the top of the second light transmission structure in the tank body is less than the mounting height of the top of the first light transmission structure in the tank body.

[0023] The second optical sensor is located below the second light transmission structure along the height direction of the sewage tank, and the second optical sensor can emit a second light signal to the top of the second light transmission structure and receive the second light signal emitted by the second light transmission structure.

[0024] In this way, when the liquid level of the dirty in the sewage tank submerges the second light transmission structure but does not submerge the first light transmission structure, the second optical sensor can obtain that the current sewage tank is in a medium-high liquid level state by detecting the change of the second light signal. When both the first optical sensor and the second optical sensor detect the change of the light signal, it indicates that the current sewage tank is in a medium-low liquid level state. Thus, through the combined arrangement of the first optical sensor, the first light transmission structure, the second optical sensor and the second light transmission structure, the liquid level in the liquid storage cavity is detected in stages, the liquid level height in the sewage tank is quantified, and thus the precision and accuracy of the water quantity detection in the sewage tank are improved.

[0025] In some embodiments, the side of the second light transmission structure opposite to the second optical sensor is in contact with and fixed relative to the inner bottom wall of the sewage tank, which can reduce the air gap between the second light transmission structure and the sewage tank, and avoid affecting the propagation of the second light signal due to the excessively large air gap. At the same time, when the air gap between the second light transmission structure and the inner bottom wall of the sewage tank is eliminated, the problem that impurities in the dirt deposit in the gap between the second light transmission structure and the inner bottom wall of the sewage tank and cause the second light signal to fail to propagate smoothly can also be avoided, the stability of the propagation of the second light signal is ensured, and the accuracy and reliability of the full tank detection of the sewage tank are improved.

[0026] The second optical sensor is located outside the sewage tank, which can avoid direct contact between the second optical sensor and the dirt, avoid the problem of inaccurate detection caused by corrosion, ensure the accuracy and reliability of the full tank detection of the sewage tank, and avoid the second optical sensor occupying the internal space of the liquid storage cavity to reduce the effective volume of the liquid storage cavity.

[0027] In some embodiments, the second light transmission structure is sleeved outside the first light transmission structure, and the second light transmission structure has two light reflection surfaces at the top, which are used for emitting the second light signal.

[0028] The projection of the first light transmission structure on the inner bottom wall of the sewage tank and the projection of the two light reflection surfaces on the inner bottom wall of the sewage tank do not overlap.

[0029] In this way, the overall volume of the light transmission structure can be reduced, so as to avoid affecting the effective volume of the sewage storage cavity, and the transmission paths of the first light signal and the second light signal can be staggered with each other to avoid mutual interference between the first light signal and the second light signal, and the independence and accuracy of the water level detection in the sewage tank are ensured.

[0030] In some embodiments, the cleaning device further comprises:

[0031] The third light transmission structure has a mounting height at the top in the tank body smaller than the mounting height of the second light transmission structure at the top in the tank body.

[0032] The third optical sensor can emit a third light signal to the top of the third light transmission structure, and can receive the third light signal emitted by the third light transmission structure, so as to perform in-situ detection on the sewage tank.

[0033] In this way, when the sewage tank is installed in place, the third light transmission structure is located in the light path of the third optical sensor, and the third light signal can be emitted through the third light transmission structure and returned to the third optical sensor. When the sewage tank is not installed in place, the third light transmission structure deviates from the light path of the third optical sensor, so that the third light signal cannot form an effective reflection path, and the third optical sensor cannot receive the emitted third light signal. In this way, by detecting the change in the emission state of the third light signal, it can be accurately judged whether the sewage tank is installed in place, so as to realize the in-place detection of the sewage tank.

[0034] In some embodiments, the third light transmission structure is fixedly arranged in the liquid storage cavity, the third optical sensor is located outside the sewage tank, and the side of the third light transmission structure opposite to the third optical sensor is in contact with and fixed relative to the inner wall of the sewage tank.

[0035] In this way, the air gap between the third light transmission structure and the sewage tank can be eliminated or reduced, and the influence of the air gap on the propagation of the third light signal can be avoided. At the same time, when the air gap between the third light transmission structure and the inner bottom wall of the sewage tank is eliminated, the problem that impurities in the dirt deposit in the gap between the third light transmission structure and the inner bottom wall of the sewage tank and cause the third light signal to fail to propagate smoothly can be avoided, the stability of the third light signal propagation is ensured, and the accuracy and reliability of the sewage tank in-place detection are improved.

[0036] In addition, the third optical sensor is located outside the sewage tank, which can avoid direct contact between the third optical sensor and the dirt, avoid inaccurate detection caused by corrosion, ensure the accuracy and reliability of the sewage tank full detection, and avoid the third optical sensor occupying the internal space of the liquid storage cavity, thereby reducing the effective volume of the liquid storage cavity.

[0037] In some embodiments, the cleaning device further comprises a protective member, the protective member is wrapped outside the third light transmission structure, and a hollow layer is further formed between the protective member and the third light transmission structure, the hollow layer is not in communication with the liquid storage cavity.

[0038] In this way, by arranging the protective member and the hollow layer, the third light signal can be totally reflected at the interface between the first light transmission structure and the air in the hollow layer, so that the third optical sensor can stably receive the emitted third light signal, the accuracy of the detection of the third optical sensor is improved, and the influence of the dirt in the liquid storage cavity is avoided.

[0039] In addition, only when the third light signal irradiates the surface of the third light transmission structure in the first shielding piece covering area, the effective total reflection occurs. If there is a deviation or an angle inclination in the installation position of the sewage tank, the third light signal fails to align with the hollow layer, and the reflected light path cannot be formed, so that the third optical sensor can accurately judge the installation position and angle of the sewage tank, and the misjudgment problem caused by improper installation is avoided.

[0040] In some embodiments, the third light transmission structure is fixed on the outer bottom wall of the sewage tank.

[0041] The cleaning device further comprises a machine body, and the third optical sensor is mounted on the machine body.

[0042] When the sewage tank is installed on the machine body, the third optical sensor and the third light transmission structure are located on the same side of the sewage tank.

[0043] In this way, when the sewage tank is installed in place, the third light signal is emitted from the third light transmission structure and returns to the third optical sensor. When the sewage tank is not installed in place, the third light transmission structure and the third optical sensor are misaligned, and the third light signal cannot form an effective reflection path, so that the in-place detection of the sewage tank can be realized by detecting whether the third optical sensor can receive the third light signal, and the complexity of the third light transmission structure is reduced, facilitating production and manufacturing.

[0044] In some embodiments, the cleaning device further comprises a machine body, and the third light transmission structure and the third optical sensor are both fixed on the machine body.

[0045] When the sewage tank is installed on the machine body, the sewage tank is located between the third light transmission structure and the third optical sensor to block the third optical sensor from receiving the third light signal emitted from the third light transmission structure.

[0046] In this way, when the sewage tank is not installed in place, the third light signal can be emitted from the third light transmission structure and return to the third optical sensor. When the sewage tank is installed in place, the sewage tank can block the transmission of the third light signal. Thus, the in-place detection of the sewage tank can be realized by detecting whether the third optical sensor can receive the third light signal. Meanwhile, the complexity of the third light transmission structure is reduced, facilitating production and manufacturing.

[0047] In a second aspect, the embodiments of the present application provide a cleaning system, comprising:

[0048] The base station has a containing space.

[0049] The cleaning device in any of the above embodiments can be arranged in the containing space.

[0050] The cleaning system provided in this application includes the aforementioned cleaning equipment and therefore has the beneficial effects of the aforementioned cleaning equipment. By detecting whether the first optical sensor receives the first light signal emitted from the first light transmission structure, the fullness of the wastewater tank can be determined. In this way, before the cleaning equipment performs the self-cleaning operation, the first optical sensor can detect whether the current wastewater tank is full, so as to avoid the interruption of the cleaning equipment's operation due to the wastewater tank being full during the self-cleaning process, ensuring the continuity of the self-cleaning process and the user experience. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 This is a partial schematic diagram of the cleaning equipment provided in an embodiment of this application;

[0053] Figure 2 for Figure 1 Schematic diagram of the structure of the wastewater tank;

[0054] Figure 3 for Figure 1 A schematic diagram of an explosion in the wastewater tank;

[0055] Figure 4 for Figure 2 A schematic diagram of the cross-section of the wastewater tank along the AA direction;

[0056] Figure 5 for Figure 4 A structural diagram from another perspective;

[0057] Figure 6 for Figure 2 A schematic diagram of the cross-section of the wastewater tank along the BB direction;

[0058] Figure 7 for Figure 6 A structural diagram from another perspective;

[0059] Figure 8 This is a schematic diagram of the optical paths of the first and second optical signals;

[0060] Figure 9 This is a schematic diagram of an optical path for a third optical signal;

[0061] Figure 10 This is a schematic diagram of another optical path for the third optical signal;

[0062] Figure 11 A schematic diagram of a third light signal transmission mode;

[0063] Figure 12 A schematic diagram of another third light signal transmission mode.

[0064] Reference signs:

[0065] 100 - cleaning device;

[0066] 10 - sewage tank;

[0067] 1 - tank cover;

[0068] 2 - tank body; 21 - liquid storage cavity; 22 - first side wall; 23 - second side wall;

[0069] 3 - first light transmission structure;

[0070] 4 - first optical sensor; 41 - first emission end; 42 - first receiving end;

[0071] 5 - second light transmission structure; 51 - light reflection surface;

[0072] 6 - second optical sensor; 61 - second emission end; 62 - second receiving end;

[0073] 7 - third light transmission structure; 71 - protection member; 72 - hollow layer; 73 - inclined surface; 74 - waist surface;

[0074] 8 - third optical sensor;

[0075] 9 - support member;

[0076] 11 - structural member; 111 - accommodating cavity;

[0077] 12 - sewage inlet pipe;

[0078] 20 - machine body;

[0079] x - height direction;

[0080] a - first light signal;

[0081] b - second light signal;

[0082] c - third light signal. DETAILED DESCRIPTION

[0083] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0084] The embodiments of the present application provide a cleaning device. The cleaning device can include a robot cleaner, a vacuum cleaner, a floor washing machine, etc. capable of cleaning a surface to be cleaned. For example, the surface to be cleaned can be a floor, etc. The structure of the cleaning device will be described below mainly taking the scenario of cleaning the floor by the cleaning device as an example.

[0085] Figure 1 A partial schematic view of the cleaning device 100 provided by the present application is shown in FIG. 1.

[0086] Please refer to Figure 1 Specifically, the cleaning device 100 includes a body 20 and a brush assembly. The brush assembly is arranged at the bottom of the body 20 to clean the surface to be cleaned. An end of the body 20 away from the surface to be cleaned is provided with a handle to facilitate a user to hold and push the cleaning device 100 to clean the surface to be cleaned.

[0087] The brush assembly includes a mounting seat and a roller brush. The mounting seat is rotatably arranged at the bottom of the body 20, and the roller brush is arranged at a side of the mounting seat facing the surface to be cleaned. When the roller brush rotates relative to the mounting seat, the roller brush can contact the surface to be cleaned to clean the surface to be cleaned.

[0088] The cleaning device 100 can include a walking mechanism. The brush assembly is mounted on the walking mechanism. When the cleaning device 100 is working, a user can push the handle of the cleaning device 100 to make the cleaning device 100 walk in different directions under the driving of the walking mechanism, so as to clean the surface to be cleaned by the brush assembly.

[0089] The cleaning device 100 further includes a clean water tank arranged on the brush to supply clean water to the brush or the surface to be cleaned, so that the brush can better clean the surface to be cleaned.

[0090] The cleaning device 100 will also generate sewage during the process of cleaning the surface to be cleaned. The brush assembly will also adsorb impurities on the surface to be cleaned when cleaning the surface to be cleaned. The impurities can include paper scraps, food debris, hair, etc.

[0091] The cleaning device 100 can include a sewage tank 10. The sewage tank 10 is mounted on the side of the brush assembly away from the surface to be cleaned. The sewage tank 10 has a suction port and a sewage storage cavity. The suction port is located at the top of the sewage tank 10 and communicates with the sewage storage cavity. The suction port is used to suck away the gas in the sewage storage cavity to form a negative pressure environment in the sewage storage cavity, so that the dirt during the cleaning process of the cleaning device 100 can be sucked into the sewage storage cavity under the action of pressure difference for centralized storage. In this way, the user can clean the dirt in the sewage tank 10 after the cleaning device 100 completes the cleaning work. The top of the sewage tank 10 refers to the end of the sewage tank 10 away from the brush assembly. Correspondingly, the bottom of the sewage tank 10 refers to the end of the sewage tank 10 close to the brush assembly.

[0092] It should be noted that the dirt during the cleaning process can include the sewage, impurities and the mixture of the dirt generated during the cleaning process mentioned above.

[0093] In the related art, in order to avoid that the dirt in the sewage tank is too much to overflow, the sewage tank needs to be water fullness detected. Therefore, the existing cleaning device usually sets a probe in the sewage tank. When the water level in the sewage tank rises to contact the probe, the conductivity of the dirt is used to form a loop between the probes, so as to trigger a detection signal to inform the user to clean the sewage tank in time.

[0094] However, due to the complex composition of the dirt generated during the cleaning process, the dirt may be corrosive. Long-term use can cause the surface of the probe to be corroded, affecting the conductivity of the probe. At the same time, the hair, fibers and other pollutants in the dirt are easy to adhere to the surface of the probe, which may cause the pollutants to bridge the probes to form a conductive loop to generate a false alarm when the sewage tank is not full. Or the probe may be wrapped by the insulating pollutants to cause the probe to fail to form a loop, resulting in detection failure. Therefore, the accuracy of water fullness detection by the probe is low.

[0095] Therefore, how to improve the real-time performance and accuracy of water fullness detection of the sewage tank has become a technical problem to be solved.

[0096] Therefore, the embodiment of the present application provides a cleaning device 100, which includes a sewage tank 10, a first light transmission structure and a first optical sensor. The sewage tank 10 has a liquid storage cavity. The first light transmission structure is fixedly arranged at the bottom of the liquid storage cavity and is arranged along the height direction of the sewage tank 10. The first optical sensor can emit a first light signal along the top of the first light transmission structure and receive a first light signal emitted by the first light transmission structure. Therefore, by detecting whether the first optical sensor receives the first light signal emitted by the first light transmission structure, the water fullness state of the sewage tank 10 can be judged, and the real-time performance of the water fullness detection of the sewage tank 10 is improved.

[0097] Meanwhile, the first optical sensor can be arranged outside the liquid storage cavity, so that a probe does not need to be arranged inside the liquid storage cavity to detect the water level of the sewage tank 10, thereby avoiding the problem of inaccurate detection caused by corrosion by avoiding direct contact between the first optical sensor and sewage, and ensuring the accuracy and reliability of the water level detection of the sewage tank 10.

[0098] The cleaning device provided by the embodiment of the present application is further described below with reference to the accompanying drawings.

[0099] Figure 2 For Figure 1 FIG. 2 is a structural schematic view of the sewage tank 10, Figure 3 For Figure 1 FIG. 3 is an exploded schematic view of the sewage tank 10, Figure 8 FIG. 4 is a schematic view of the light path of the first light signal a and the second light signal b.

[0100] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 8 , the embodiment of the present application provides a cleaning device 100, which comprises a sewage tank 10, a first light transmission structure 3 and a first optical sensor 4.

[0101] Specifically, the sewage tank 10 has a liquid storage cavity 21. The sewage tank 10 comprises a tank body 2 and a tank cover 1, the tank body 2 forms the liquid storage cavity 21 inside, and the tank cover 1 is arranged on the tank body 2 to cover the liquid storage cavity 21.

[0102] Among them, the tank cover 1 is provided with a suction motor, so as to concentrate the dirt generated during the working process of the cleaning device 100 into the liquid storage cavity 21. In order to avoid that the dirt is too full to enter the suction motor, it is necessary to detect the water level of the sewage tank 10, so as to prompt the user to clean in time when the sewage tank 10 is full of water.

[0103] It can be understood that the water level of the sewage tank 10 is not that the physical volume of the liquid storage cavity 21 is completely filled, but that the liquid level of the liquid storage cavity 21 reaches a preset safety height, so as to avoid the liquid level rising further to the area where the internal elements of the tank cover 1 are located.

[0104] Figure 4 For Figure 3 FIG. 5 is a sectional view of the sewage tank 10 along the A-A direction, Figure 6 For Figure 3 FIG. 6 is a sectional view of the sewage tank 10 along the B-B direction.

[0105] Please refer to Figure 2 , Figure 4 , Figure 6 and Figure 8In the embodiment, the first light transmission structure 3 is fixedly arranged at the bottom of the liquid storage cavity 21 and arranged along the height direction x of the sewage tank 10.

[0106] In the embodiment, the connection mode between the first light transmission structure 3 and the liquid storage cavity 21 is not limited, and the connection mode includes but is not limited to clamping, threaded connection, bonding or one-piece forming mode. Those skilled in the art can adaptively select according to actual needs, and any connection mode that can keep the first light transmission structure 3 and the liquid storage cavity 21 relatively fixed falls within the protection scope of the application.

[0107] Please refer to Figure 2 , Figure 4 , Figure 6 and Figure 8 , the first optical sensor 4 is located below the first light transmission structure 3 along the height direction x of the sewage tank 10, and the optical sensor can emit the first light signal a to the top of the first light transmission structure 3 and receive the first light signal a emitted by the first light transmission structure 3 to detect the fullness of the sewage tank 10.

[0108] Specifically, the first optical sensor 4 has a first emission end 41 and a first receiving end 42, the first emission end 41 is used to emit the first light signal a into the first light transmission structure 3, and the first receiving end 42 is used to receive the first light signal a emitted by the first light transmission structure 3.

[0109] It should be noted that the first optical sensor 4 for receiving the first light signal a emitted by the first light transmission structure 3 can refer to receiving the first light signal a reflected by the first light transmission structure 3 or the first light signal a refracted by the first light transmission structure 3.

[0110] Since the first optical sensor 4 is arranged below the first light transmission structure 3 along the height direction x of the sewage tank 10, and the first light transmission structure 3 is arranged along the height direction x of the sewage tank 10, the first light signal a emitted by the first optical sensor 4 can be perpendicular to the bottom surface of the first light transmission structure 3 and enter the first light transmission structure 3.

[0111] In the embodiment, the first light transmission structure 3 is made of plastic material with good light transmission. It can be understood that the material of the first light transmission structure 3 can be adaptively selected according to actual needs, and the embodiment does not make any limitation.

[0112] The first light transmission structure 3 has a first refractive index, the air has a second refractive index, and the dirt in the sewage tank 10 has a third refractive index. The refractive index of the first light transmission structure 3 is greater than the refractive index of the dirt, and the refractive index of the dirt is greater than the refractive index of the air.

[0113] Please refer to Figure 2、 Figure 4 、 Figure 6 and Figure 8 When the liquid level of the dirt in the liquid storage cavity 21 is higher than the first light transmission structure 3, the first light signal a is emitted from the first light transmission structure 3 to the dirt. According to the refraction law, when the incident angle a of the light is greater than the critical angle, total reflection occurs, but when the incident angle a of the light is less than the critical angle, the light will mainly refract into the dirt, resulting in that the first light signal a reflected to the first optical sensor 4 is very weak and cannot be received by the first optical sensor 4.

[0114] When the liquid level of the dirt in the liquid storage cavity 21 is lower than the first light transmission structure 3, the light is emitted from the first light transmission structure 3 to the air. At this time, since the refractive index of the air is less than that of the dirt and the first light transmission structure 3, the critical angle of the light from the first light transmission structure 3 to the air is small at this time. According to the refraction law, when the incident angle a of the light is greater than the critical angle, total reflection occurs, so that most of the first light signal a can return to the first optical sensor 4.

[0115] Therefore, by adjusting the incident angle a of the first light signal a to be between the critical angle of the first light transmission structure 3-air interface and the critical angle of the first light transmission structure 3-dirt interface, the first light signal a can be refracted when the liquid level of the dirt in the liquid storage cavity 21 is higher than the first light transmission structure 3, and total reflection occurs when the liquid level of the dirt in the liquid storage cavity 21 is lower than the first light transmission structure 3. Then, by judging whether the first optical sensor 4 can receive the emitted first light signal a, the liquid level of the dirt in the liquid storage cavity 21 can be judged, and the accuracy and real-time performance of the water full detection of the sewage tank 10 are improved.

[0116] For example, when the cleaning device 100 performs a self-cleaning program, the sewage tank 10 can be subjected to water full detection first to avoid the problem that the self-cleaning program is interrupted due to the water full of the sewage tank 10.

[0117] Among them, since the dirt is mostly dirty water, the refractive index of water is about 1.33, the refractive index of air is 1, and the refractive index of the first light transmission structure 3 is about 1.5. The critical angle of the first light transmission structure 3-air interface is about 41.8°, and the critical angle of the first light transmission structure 3-dirt interface is about 62.6°, so it is only necessary to make the incident angle a of the first light signal a between 41.8°-62.6°, that is, the above-mentioned effect can be achieved.

[0118] It can be understood that the specific values of the refractive index and the critical angle are exemplary descriptions based on typical materials. In actual implementation, those skilled in the art can make adaptive adjustments according to the optical properties of the specific materials selected, and the setting of the incident angle a is not limited to the specific value range described above. Any setting of the incident angle a that can cause total reflection of light at the first light transmission structure 3-air interface and refraction at the first light transmission structure 3-dirt interface falls within the protection scope of the present application.

[0119] Please refer to Figure 2 、 Figure 4 、 Figure 6 and Figure 8 In some embodiments, the top of the first light transmission structure 3 extends towards the top side of the sewage tank 10.

[0120] Specifically, since the first light signal a is emitted along the height direction x of the sewage tank 10, the first light signal a is emitted at the top of the first light transmission structure 3. Therefore, by extending the top of the first light transmission structure 3 towards the top side of the sewage tank 10, the liquid level at which the refraction of the first light signal a occurs can be closer to the highest liquid level allowed by the liquid storage cavity 21, thereby maximizing the capacity of the liquid storage cavity 21 and avoiding false alarms when the dirt is not full or interrupting the self-cleaning program of the cleaning device 100 due to premature alarms.

[0121] In some embodiments, the top of the sewage tank 10 has a structural member 11, which can be a functional component inherent to the sewage tank 10, such as an ozone generator or a filter module.

[0122] Figure 7 For Figure 6 Structural diagram from another perspective.

[0123] Please refer to Figure 1 、 Figure 6 and Figure 7 The structural member 11 has a containing cavity 111 on the side facing the tank 2, and the top of the first light transmission structure 3 is located in the containing cavity 111, so that when the user pushes the cleaning device 100 to move and causes the sewage tank 10 to surge, the side wall of the containing cavity 111 can dampen the surge of dirt, suppressing the fluctuation amplitude of the dirt inside the containing cavity 111, thereby improving the accuracy of the first optical sensor 4 in detecting the liquid level of the dirt and avoiding the problem of inaccurate detection results due to liquid level fluctuations.

[0124] Please refer to Figure 1 、 Figure 6 and Figure 7 In some embodiments, the sewage tank 10 is provided with a dirt inlet pipe 12 to guide the dirt sucked in during cleaning into the dirt storage cavity, and the first light transmission structure 3 and the dirt inlet pipe 12 are spaced apart.

[0125] Specifically, to meet the cleaning needs of low spaces (such as the bottom of a bed or the bottom of a sofa), the cleaning device 100 has a lying-down use function. When the cleaning device 100 is used in a lying-down manner, the body 20 of the cleaning device 100 can be used in a lying-down posture close to the surface to be cleaned, thereby meeting the use scenario of pushing and pulling the cleaning device 100 forward and backward on the surface to be cleaned.

[0126] It should be noted that the use scenario of pushing and pulling the cleaning device 100 forward and backward on the surface to be cleaned can include the use scenario of pushing the cleaning device 100 forward by the user and the use scenario of pushing the cleaning device 100 backward by the user.

[0127] Figure 5 For Figure 4 Structure diagram from another perspective.

[0128] Please refer to Figure 1 and Figure 5 When the cleaning device 100 is in a lying-down state, dirt will accumulate on one side of the sewage tank 10. Therefore, by spacing the first light transmission structure 3 and the dirty water inlet pipe 12, the first light transmission structure 3 and the dirty water inlet pipe 12 can be at different liquid levels, thereby ensuring the detection effect of the first light transmission structure 3.

[0129] Please refer to Figure 5 In some embodiments, the sewage tank 10 has opposite first and second side walls 22 and 23 in the circumferential direction, and when the sewage tank 10 is in a lying-down state, the first side wall 22 is adjacent to the surface to be cleaned, and the second side wall 23 is away from the surface to be cleaned. The first light transmission structure 3 is arranged in the liquid storage cavity 21 close to one side of the second side wall 23.

[0130] Please refer to Figure 1 and Figure 5 The dirty water inlet pipe 12 is located between the first light transmission structure 3 and the first side wall 22, so that when the cleaning device 100 is in a lying-down state, a higher actual liquid level is required to submerge the first light transmission structure 3 located on the higher side, thereby increasing the actual liquid level height for triggering the water full alarm, avoiding early alarm due to liquid surface inclination when the cleaning device 100 is in an inclined or lying-down state, and ensuring that the volume of the liquid storage cavity 21 can be fully utilized.

[0131] Please refer to Figure 1 , Figure 4 and Figure 8In the embodiment, the height of the first light transmission structure 3 is lower than the height of the inlet pipe 12 along the height direction x of the sewage tank 10, so that the exit point of the first light signal a can be spaced apart from the inlet pipe 12. When the liquid level in the liquid storage cavity 21 rises to the top of the first light transmission structure 3, the first optical sensor 4 can immediately sense the change in the liquid level, triggering the water full alarm in advance, thereby reserving a certain buffer time, ensuring that the cleaning equipment 100 can stop working or drain water before the liquid storage cavity 21 is completely filled with water, avoiding the problem of overflowing of dirt in the liquid storage cavity 21 or water entering the suction motor.

[0132] In the embodiment, the height difference between the first light transmission structure 3 and the inlet pipe 12 is not limited in any way, and can be adaptively selected according to actual needs.

[0133] It can be understood that if the height difference is too large, the early warning may be triggered too early, affecting the user experience. If the height difference is too small, it may not be able to provide sufficient response time.

[0134] Please refer to Figure 1 and Figure 4 In some embodiments, the sewage tank 10 further comprises a support 9, which is arranged on the side of the inlet pipe 12 close to the first light transmission structure 3, and is connected to the inlet pipe 12 at one end and to the first light transmission structure 3 at the other end, so as to enhance the installation stability of the first light transmission structure 3 in the liquid storage cavity 21, prevent the first light transmission structure 3 from shifting or vibrating during the movement of the dirt or the cleaning equipment 100, and ensure the reliability of the water full detection.

[0135] In the embodiment, the support 9 can be integrally formed with the first light transmission structure 3, or connected to the inlet pipe 12 and the first light transmission structure 3 by bonding, buckling or other connection methods, which are not limited in the embodiment.

[0136] Please refer to Figure 2 , Figure 6 and Figure 8 In some embodiments, the side of the first light transmission structure 3 opposite to the first optical sensor 4 is in contact with the inner bottom wall of the sewage tank 10, which can reduce the air gap between the first light transmission structure 3 and the sewage tank 10, and avoid affecting the propagation of the first light signal a due to the large air gap. At the same time, when the air gap between the first light transmission structure 3 and the inner bottom wall of the sewage tank 10 is eliminated, the problem that impurities in the dirt deposit in the gap between the first light transmission structure 3 and the inner bottom wall of the sewage tank 10 and cause the first light signal a to fail to propagate smoothly can also be avoided, ensuring the stability of the propagation of the first light signal a, and thereby improving the accuracy and reliability of the water full detection of the sewage tank 10.

[0137] Meanwhile, by fixing the first light transmission structure 3 to the inner bottom wall of the sewage tank 10, the air gap between the first light transmission structure 3 and the sewage tank 10 can be reduced, and the propagation of the first light signal a can be prevented from being affected by the air gap.

[0138] For reference Figure 2 , Figure 7 and Figure 8 In the embodiment, the first optical sensor 4 is located outside the sewage tank 10, and the inner bottom wall of the sewage tank 10 is made of a light-transmitting material to form a light signal transmission channel. The inner bottom wall allows the first light signal a to propagate in a straight path in the air, ensuring the effective transmission of the first light signal a. Alternatively, the sewage tank 10 can also be made of a light-transmitting material as a whole to ensure the transmission efficiency of the first light signal a and avoid light energy loss caused by material blocking.

[0139] For reference Figure 1 , Figure 7 and Figure 8 By locating the first optical sensor 4 outside the sewage tank 10, the first optical sensor 4 can be prevented from being directly contacted with dirt, and the problem of inaccurate detection caused by corrosion can be avoided, ensuring the accuracy and reliability of the full-tank detection of the sewage tank 10, and avoiding the occupation of the internal space of the liquid storage cavity 21 by the first optical sensor 4, which reduces the effective volume of the liquid storage cavity 21.

[0140] It can be understood that in the embodiment, the first light transmission structure 3 is fixedly connected to the sewage tank 10, and the fixed connection includes any connection mode that can fix the two relative to each other, such as one-piece molding, screwing, buckle connection, etc. For this, the embodiment does not make any limitation.

[0141] For reference Figure 2 , Figure 4 , Figure 6 and Figure 8 In some embodiments, the cleaning device 100 further comprises a second light transmission structure 5 and a second optical sensor 6.

[0142] Specifically, the second light transmission structure 5 is fixedly arranged in the liquid storage cavity 21 and arranged along the height direction x of the sewage tank 10, and the mounting height of the top of the second light transmission structure 5 in the tank body 2 is less than the mounting height of the top of the first light transmission structure 3 in the tank body 2. The second optical sensor 6 is located below the second light transmission structure 5 along the height direction x of the sewage tank 10, and the second optical sensor 6 can emit a second light signal b to the top of the second light transmission structure 5 and receive the second light signal b reflected by the second light transmission structure 5.

[0143] The specific structure of the second optical sensor 6 is the same as that of the first optical sensor 4, and the specific structure of the second light transmission structure 5 is the same as that of the first light transmission structure 3, that is, whether the incident position of the second light signal b is dirty is determined by emitting and detecting the emitted second light signal b, which will not be described here.

[0144] Since the installation height of the top of the second light transmission structure 5 in the sewage tank 10 is less than the installation height of the top of the first light transmission structure 3 in the sewage tank 10, the detection height of the second optical sensor 6 is lower than the detection height of the first optical sensor 4, and the liquid level state of the middle part of the sewage tank 10 can be detected.

[0145] Please refer to Figure 2 , Figure 4 , Figure 6 and Figure 8 , specifically, when the dirty liquid surface in the sewage tank 10 submerges the second light transmission structure 5, but does not submerge the first light transmission structure 3, the second optical sensor 6 can obtain that the current sewage tank 10 is in a middle-high liquid level state by detecting the change of the second light signal b. When both the first optical sensor 4 and the second optical sensor 6 detect the change of the light signal, it indicates that the current sewage tank 10 is in a middle-low liquid level state. Thus, by the combined arrangement of the first optical sensor 4, the first light transmission structure 3, the second optical sensor 6 and the second light transmission structure 5, the liquid level in the liquid storage cavity 21 is detected in stages, the liquid level height in the sewage tank 10 is quantified, and the precision and accuracy of the water quantity detection in the sewage tank 10 are improved.

[0146] In some embodiments, the side of the second light transmission structure 5 opposite to the second optical sensor 6 is in contact with and fixed relative to the inner bottom wall of the sewage tank 10, which can reduce the gap between the second light transmission structure 5 and the sewage tank 10, and avoid affecting the propagation of the second light signal b due to the large air gap. At the same time, when the air gap between the second light transmission structure 5 and the inner bottom wall of the sewage tank 10 is eliminated, the problem that impurities in the dirty deposit in the gap and cause the second light signal b to fail to propagate smoothly can also be avoided, the stability of the propagation of the second light signal b is ensured, and the accuracy and reliability of the full water detection of the sewage tank 10 are improved.

[0147] Please refer to Figure 2 , Figure 4 , Figure 6 and Figure 8 , in the embodiment, the second optical sensor 6 is located outside the sewage tank 10, which can avoid direct contact between the second optical sensor 6 and the dirty, avoid inaccurate detection caused by corrosion, ensure the accuracy and reliability of the full water detection of the sewage tank 10, and avoid the second optical sensor 6 occupying the internal space of the liquid storage cavity 21, which reduces the effective volume of the liquid storage cavity 21.

[0148] It can be understood that the second light transmission structure 5 is fixedly connected with the sewage tank 10, and the fixed connection includes any connection mode capable of fixing the two relative to each other, for example, integral molding, screwing, buckle connection, etc. In this regard, the present embodiment does not make any limitation.

[0149] Please refer to Figure 2 , Figure 4 , Figure 6 and Figure 8 In some embodiments, the second light transmission structure 5 is sleeved outside the first light transmission structure 3, and the second light transmission structure 5 has two light reflection surfaces 51 at the top, which are used for reflecting the second light signal b. The projection of the first light transmission structure 3 on the inner bottom wall of the sewage tank 10 does not overlap with the projection of the two light reflection surfaces 51 on the inner bottom wall of the sewage tank 10.

[0150] Specifically, by sleeving the second light transmission structure 5 outside the first light transmission structure 3, compared with separately arranging the first light transmission structure 3 and the second light transmission structure 5, the overall volume of the light transmission structure can be reduced, so as to avoid affecting the effective volume of the sewage storage cavity.

[0151] At the same time, in order to ensure the stability of the connection between the first light transmission structure 3 and the second light transmission structure 5, the first light transmission structure 3 and the second light transmission structure 5 can be manufactured by integral molding process, so as to avoid the problem of disconnection after long-term corrosion in the dirt.

[0152] Please refer to Figure 2 , Figure 4 , Figure 6 and Figure 8 In the present embodiment, the second light transmission structure 5 has two light reflection surfaces 51 at the top, which are used for reflecting the second light signal b, and do not overlap with the projection of the first light transmission structure 3 on the inner bottom wall of the sewage tank 10, so as to stagger the transmission paths of the first light signal a and the second light signal b, to avoid mutual interference between the first light signal a and the second light signal b, and ensure the independence and accuracy of the water quantity detection in the sewage tank 10.

[0153] The two light reflection surfaces 51 are perpendicular to each other and equal in size, so that the second light signal b can enter one of the light reflection surfaces 51 at an incident angle a of 45°. When the medium outside the light reflection surface 51 is air, the second light signal b is totally reflected at the light reflection surface 51, so that the second light signal b is reflected at 45° to the second light reflection surface 51 and then totally reflected again, returning to the second optical sensor 6 along the height direction x of the sewage tank 10. In this way, the incident and exit paths of the second light signal b can be parallel to each other, so that the second emitting end 61 and the second receiving end 62 of the second optical sensor 6 can be integrated at the same position, reducing the space occupied by the second optical sensor 6 and facilitating miniaturization design.

[0154] Similarly, the top of the first light transmission structure 3 can also form an isosceles right triangle, which will not be described here.

[0155] Figure 2 Fig. 4 is a schematic diagram of a light path of the third light signal c, Figure 4 Fig. 5 is another schematic diagram of a light path of the third light signal c.

[0156] In some embodiments, the cleaning device 100 further comprises a third light transmission structure 7 and a third optical sensor 8.

[0157] Please refer to Figure 6 , Figure 8 , Figure 9 and Figure 10 The installation height of the top of the third light transmission structure 7 in the tank 2 is less than the installation height of the top of the second light transmission structure 5 in the tank 2, the third optical sensor 8 can emit the third light signal c into the top of the third light transmission structure 7, and can receive the third light signal c reflected by the third light transmission structure 7 to detect the in-place installation of the sewage tank 10.

[0158] Specifically, when the sewage tank 10 is installed in place, the third light transmission structure 7 is located in the light path of the third optical sensor 8, and the third light signal c can exit the third light transmission structure 7 and return to the third optical sensor 8. When the sewage tank 10 is not installed in place, the third light transmission structure 7 deviates from the light path of the third optical sensor 8, so that the third light signal c cannot form an effective reflection path, and at this time the third optical sensor 8 cannot receive the exiting third light signal c. In this way, by detecting the change in the exiting state of the third light signal c, it can be accurately judged whether the sewage tank 10 is installed in place, thereby realizing the in-place installation detection of the sewage tank 10.

[0159] Please refer to Figure 2 , Figure 6 , Figure 9 and Figure 10In some embodiments, the third light transmission structure 7 is fixedly arranged in the liquid storage cavity 21, the third optical sensor 8 is located outside the sewage tank 10, and the side of the third light transmission structure 7 opposite to the third optical sensor 8 is in contact with and fixedly arranged relative to the inner wall of the sewage tank 10.

[0160] Specifically, by making the third light transmission structure 7 in contact with and fixedly arranged relative to the inner wall of the sewage tank 10, the air gap between the third light transmission structure 7 and the sewage tank 10 can be reduced, and the propagation of the third light signal c can be avoided from being affected due to the air gap being too large. At the same time, when the air gap between the third light transmission structure 7 and the inner bottom wall of the sewage tank 10 is eliminated, the problem that impurities in the dirt deposit in the gap between the third light transmission structure 7 and the inner bottom wall of the sewage tank 10 and cause the third light signal c to fail to propagate smoothly can also be avoided, the stability of the propagation of the third light signal c is ensured, and the accuracy and reliability of the sewage tank 10 in place detection are improved.

[0161] At the same time, by making the third optical sensor 8 located outside the sewage tank 10, the third optical sensor 8 can be avoided from being in direct contact with the dirt, and the problem of inaccurate detection due to corrosion can be avoided, the accuracy and reliability of the sewage tank 10 full detection are ensured, and the third optical sensor 8 is avoided from occupying the internal space of the liquid storage cavity 21, so that the effective volume of the liquid storage cavity 21 is reduced.

[0162] It can be understood that the third light transmission structure 7 is fixedly connected with the sewage tank 10, and the fixed connection includes any connection mode that can fix the two relative to each other, such as one-piece forming, screwing, buckle connection, etc. For this, the present embodiment does not make any limitation.

[0163] Please refer to Figure 2 , Figure 6 , Figure 9 and Figure 10In some embodiments, the third light conducting structure 7 has a bevel 73 and two waist surfaces 74 in the circumferential direction, the two waist surfaces 74 are arranged on both sides of the bevel 73 and connected to each other to form an isosceles right triangle. The bevel 73 is in contact with the inner bottom wall of the sewage storage cavity, so that the third light signal c is vertically incident into the third light conducting structure 7 from the bevel 73, and propagates in the sewage tank 10 along the height direction x in the third light conducting structure 7 to one of the waist surfaces 74 of the third light conducting structure 7. At this time, the incident angle α of the third light signal c with the waist surface 74 is 45°. When the medium outside the waist surface 74 is air, the third light signal c can be totally reflected at the waist surface 74, and is reflected at 45° to the second waist surface 74 and then totally reflected again to return to the bevel 73 in parallel to the first direction, and is vertically emitted from the bevel 73 back to the third optical sensor 8. In this way, the incident and emitted paths of the third light signal c are kept parallel, so that the emitting end and the receiving end of the third optical sensor 8 can be integrated at the same position, reducing the space occupied by the third optical sensor 8, and facilitating miniaturization design.

[0164] Please refer to Figure 2 , Figure 6 , Figure 9 and Figure 10 In other embodiments, one of the waist surfaces 74 of the third light conducting structure 7 is arranged towards the third optical sensor 8 and perpendicular to the first direction, so that the third light signal c can be vertically incident into the third light conducting structure 7 from the waist surface 74. The third light signal c propagates in the third light conducting structure 7 along the first direction to the bevel 73, and the incident angle α of the third light signal c with the bevel 73 is 45°. When the medium outside the bevel 73 is air, the third light signal c is totally reflected at the bevel 73, so that the third light signal c is reflected at 45° to the second waist surface 74 and then vertically emitted. In this way, the third light signal c is turned back by single reflection, which can reduce the loss of light energy in the transmission process and improve the sensitivity of signal detection.

[0165] It can be understood that the shape of the third light conducting structure 7 is not limited to an isosceles right triangular prism, and the specific value of the incident angle α is not limited to 45°. In specific implementation, the third light conducting structure 7 can be arranged in other structures, as long as the incident angle α of the third light signal c at the interface of the third light conducting structure 7 is between the critical angle of the third light conducting structure 7-air interface and the critical angle of the third light conducting structure 7-dirty interface, that is, the optical effect of total reflection when the interface outside is air and refraction when it is dirty can be realized.

[0166] Please refer to Figure 2 , Figure 6 , Figure 9 and Figure 10In some embodiments, the cleaning device 100 further comprises a protective piece 71, which is wrapped outside the third light transmission structure 7, and a hollow layer 72 is formed between the protective piece 71 and the third light transmission structure 7, which is not in communication with the liquid storage cavity 21.

[0167] Specifically, when the sewage tank 10 is installed in place but there is dirt in the liquid storage cavity 21, at this time, since the refractive index of the dirt is different from that of the third light transmission structure 7, the third light signal c will be refracted, thereby causing the third optical sensor 8 to be unable to receive the emitted third light signal c.

[0168] Therefore, in the present embodiment, the third light transmission structure 7 is wrapped with the protective piece 71 on the region opposite to the third overlapping area, and the hollow layer 72 is arranged between the protective piece 71 and the third light transmission structure 7, which is not in communication with the liquid storage cavity 21, so that the medium in the hollow layer 72 is air. In this way, when the sewage tank 10 is installed in place, the third light signal c is totally reflected at the interface between the third light transmission structure 7 and the air in the hollow layer 72, ensuring that the third optical sensor 8 can stably receive the emitted third light signal c, thereby improving the detection accuracy of the third optical sensor 8 and avoiding the influence of the dirt in the liquid storage cavity 21.

[0169] It should be noted that the thickness and height of the hollow layer 72 are not limited in the present embodiment, and can be adaptively selected according to actual needs.

[0170] In addition, effective total reflection can only occur when the third light signal c irradiates the surface of the third light transmission structure 7 in the region wrapped by the protective piece 71. If there is a deviation or an angle inclination in the installation position of the sewage tank 10, the third light signal c cannot be aligned with the hollow layer 72, so that the reflected light path cannot be formed, thereby enabling the third optical sensor 8 to accurately judge the installation position and angle of the sewage tank 10, and avoiding the misjudgment problem caused by improper installation.

[0171] Figure 2 A schematic diagram of a transmission mode of the third light signal c.

[0172] Please refer to Figure 6 , Figure 9 and Figure 10In some embodiments, the third light transmission structure 7 is fixed on the outer bottom wall of the sewage tank 10. The cleaning device 100 further comprises a machine body 20, and the third optical sensor 8 is mounted on the machine body 20. When the sewage tank 10 is mounted on the machine body 20, the third optical sensor 8 and the third light transmission structure 7 are located on the same side of the sewage tank 10. In this way, when the sewage tank 10 is mounted in place, the third light signal c is emitted from the third light transmission structure 7 and then returns to the third optical sensor 8. When the sewage tank 10 is not mounted in place, the third light transmission structure 7 and the third optical sensor 8 are misaligned, and the third light signal c cannot form an effective reflection path, so that the in-place detection of the sewage tank 10 can be realized by detecting whether the third optical sensor 8 can receive the third light signal c. In this way, the protective member 71 and the hollow layer 72 are not needed, the complexity of the third light transmission structure 7 is reduced, and the production and manufacturing are facilitated.

[0173] Meanwhile, it can be understood that the sewage tank 10 has a recess to accommodate the third optical sensor 8 and the third light transmission structure 7, so that interference is avoided.

[0174] Figure 11 Another schematic view of a transmission mode of the third light signal c.

[0175] Please refer to Figure 1 , Figure 10 and Figure 11 In some embodiments, the cleaning device 100 further comprises a machine body 20, and the third light transmission structure 7 and the third optical sensor 8 are both fixed on the machine body 20. When the sewage tank 10 is mounted on the machine body 20, the sewage tank 10 is located between the third light transmission structure 7 and the third optical sensor 8 to block the third optical sensor 8 from receiving the third light signal c reflected by the third light transmission structure 7.

[0176] Specifically, when the sewage tank 10 is not mounted in place, the third light signal c can be emitted from the third light transmission structure 7 and then return to the third optical sensor 8. When the sewage tank 10 is mounted in place, the sewage tank 10 can block the transmission of the third light signal c. Thus, the in-place detection of the sewage tank 10 can be realized by detecting whether the third optical sensor 8 can receive the third light signal c, and the protective member 71 and the hollow layer 72 are not needed, the complexity of the third light transmission structure 7 is reduced, and the production and manufacturing are facilitated.

[0177] Please refer to Figure 12 and Figure 1 The embodiments of the present application further provide a cleaning system, which comprises a base station and the cleaning device 100 according to any one of the above embodiments, and the base station has a receiving space, and part of the cleaning device 100 can be arranged in the receiving space.

[0178] Specifically, the cleaning device 100 can return to the base station for self-cleaning operation after cleaning is completed. The cleaning device 100 can start a self-cleaning program, and through methods such as water flushing and high-speed rotation of the floor brush, the dirt remaining in the floor brush assembly, the pipeline and other components during the cleaning operation can be removed and concentrated in the sewage tank 10, so as to ensure the cleanliness of the inside of the cleaning device 100.

[0179] Please refer to Figure 10 , Figure 12 and Figure 1 Figure 2 Figure 1 Figure 2 Figure 8 The cleaning system provided by the embodiments of the present application includes the cleaning device 100 described above, and thus has the beneficial effects of the cleaning device 100 described above. By detecting whether the first optical sensor 4 receives the first light signal a emitted by the first light transmission structure 3, it can be determined whether the sewage tank 10 is full. In this way, before the cleaning device 100 performs the self-cleaning operation, the first optical sensor 4 can first detect whether the current sewage tank 10 is full, so as to avoid the interruption of the cleaning device 100 during the self-cleaning process due to the full load of the sewage tank 10, and ensure the continuity of the self-cleaning process and the user experience.

[0180] The embodiments or implementation manners in the present application are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0181] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0182] In the description of the present application, it should be understood that the terms "include" and "have" and any variations thereof used herein are intended to cover non-exclusive inclusion, for example, a process, method, display structure, product or device including a series of steps or units need not be limited to those clearly listed steps or units, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0183] The term "and / or" used in the present application is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0184] Unless specifically stated and defined, the terms "mounting", "connected", "connecting", "fixed", and the like, should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or become an integral; can be directly connected, can also be indirectly connected through an intermediate medium, can make two elements inside the communication or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0185] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and 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 the present application.

Claims

1. A cleaning device, characterized in that, include: Wastewater tank, with a liquid storage chamber; A first light-conducting structure is fixedly disposed at the bottom of the liquid storage cavity, and the first light-conducting structure is arranged along the height direction of the sewage tank; The first optical sensor is located below the first light transmission structure along the height direction of the sewage tank. The optical sensor can emit a first light signal towards the top of the first light transmission structure and can receive the first light signal emitted from the first light transmission structure to detect whether the sewage tank is full.

2. The cleaning equipment according to claim 1, characterized in that, The sewage tank is equipped with a sewage inlet pipe, and the first light transmission structure and the sewage inlet pipe are arranged at intervals. Along the height direction of the sewage tank, the height of the first light-conducting structure is lower than the height of the sewage inlet pipe.

3. The cleaning equipment according to claim 2, characterized in that, The sewage tank is also equipped with a support member, which is located on the side of the sewage inlet pipe near the first light transmission structure. One end of the support member is connected to the sewage inlet pipe, and the other end is connected to the first light transmission structure.

4. The cleaning equipment according to claim 2, characterized in that, The wastewater tank has a first sidewall and a second sidewall in the circumferential direction. When the wastewater tank is in a flat position, the first sidewall is adjacent to the surface to be cleaned, and the second sidewall is away from the surface to be cleaned. The first light-conducting structure is located inside the liquid storage cavity on the side near the second sidewall.

5. The cleaning equipment according to claim 1, characterized in that, The side of the first light-conducting structure opposite to the first optical sensor is in contact with the inner bottom wall of the sewage tank, and the first optical sensor is located outside the sewage tank.

6. The cleaning equipment according to any one of claims 1-5, characterized in that, Also includes: The second light transmission structure is fixedly disposed in the liquid storage cavity and is arranged along the height direction of the sewage tank. The installation height of the top of the second light transmission structure in the sewage tank is less than the installation height of the top of the first light transmission structure in the sewage tank. The second optical sensor is located below the second light transmission structure along the height direction of the sewage tank. The second optical sensor can emit a second light signal into the top of the second light transmission structure and can receive the second light signal emitted by the second light transmission structure.

7. The cleaning equipment according to claim 6, characterized in that, The side of the second light-conducting structure opposite to the second optical sensor is in contact with and fixed relative to the inner bottom wall of the sewage tank, while the second optical sensor is located outside the sewage tank.

8. The cleaning equipment according to claim 7, characterized in that, The second light-conducting structure is sleeved on the outside of the first light-conducting structure, and the second light-conducting structure has two light-reflecting surfaces at the top, which are used to emit the second light signal; The projection of the first light-conducting structure onto the inner bottom wall of the sewage tank does not overlap with the projections of the two light-reflecting surfaces onto the inner bottom wall of the sewage tank.

9. The cleaning equipment according to claim 1, characterized in that, Also includes: Third light transmission structure; The third optical sensor is capable of emitting a third optical signal into the top of the third optical transmission structure and receiving the third optical signal emitted by the third optical transmission structure to perform in-situ detection of the sewage tank.

10. The cleaning equipment according to claim 9, characterized in that, The third optical transmission structure is fixedly disposed inside the liquid storage cavity, and the third optical sensor is located outside the sewage tank. The side of the third optical transmission structure opposite to the third optical sensor is in contact with and relatively fixed to the inner wall of the sewage tank.

11. The cleaning equipment according to claim 10, characterized in that, It also includes a protective component, which covers the outside of the third light-conducting structure, and a hollow layer is formed between the protective component and the third light-conducting structure, the hollow layer being not connected to the liquid storage cavity.

12. The cleaning equipment according to claim 9, characterized in that, The third light transmission structure is fixedly installed on the outer bottom wall of the sewage tank; The cleaning equipment also includes a body, and the third optical sensor is mounted on the body; When the sewage tank is installed on the machine body, the third optical sensor and the third light transmission structure are located on the same side of the sewage tank.

13. The cleaning equipment according to claim 9, characterized in that, It also includes a fuselage, and the third light transmission structure and the third optical sensor are both fixedly mounted on the fuselage; When the sewage tank is installed on the machine body, the sewage tank is located between the third light transmission structure and the third optical sensor to block the third optical sensor from receiving the third light signal emitted by the third light transmission structure.

14. A cleaning system, characterized in that, include: Base station, the base station having a housing space; The cleaning equipment as described in any one of claims 1-13, wherein a portion of the cleaning equipment may be disposed within the receiving space.

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