A control method of a cleaning apparatus

Abstract

The application provides a control method of a cleaning device, the cleaning device comprising a control system, a ground brush, a machine body and a sewage suction system, the sewage suction system comprising a sewage tank and a sewage suction fan for sucking sewage and / or dirt into the sewage tank, the control system comprising a main control unit and a surge detection circuit connected with the main control unit, and the sewage tank being provided with a conductor assembly and a surge detection assembly connected with the surge detection circuit; the control method of the cleaning device comprising: the main control unit judging whether a surge detection signal sent by the surge detection circuit is received; if the surge detection signal is received, the working state of the sewage suction fan is regulated and controlled; wherein when the liquid in the sewage tank surges, the conductor assembly and the surge detection assembly are connected by the surging liquid, the conductor assembly, the surge detection assembly and the surge detection circuit form a first loop, and the surge detection circuit sends the surge detection signal to the main control unit. The application can avoid the water inlet phenomenon of the sewage suction fan caused by the surge.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and in particular to a control method for cleaning equipment. Background Technology

[0002] Currently, floor scrubbers and other cleaning equipment are widely used. Cleaning equipment includes a rotating floor brush and a machine body. The floor brush is equipped with cleaning components for cleaning surfaces awaiting cleaning. The equipment also includes a suction system; this system comprises a suction port on the floor brush, a wastewater tank on the machine body, a suction fan connected to the wastewater tank, and a suction pipe connecting the wastewater tank and the suction port.

[0003] In existing technology, when using cleaning equipment to clean surfaces waiting to be cleaned, the user pushes and pulls the machine body. During this process, the cleaning components generate physical friction with the ground, removing dirt from the surface. After the dirt is removed, a waste liquid is formed. Under the suction force of the suction fan, the waste liquid is drawn through the waste liquid outlet into the suction pipe and rises along the suction pipe. When it reaches the pipe opening, it exits and falls naturally into the wastewater tank under gravity.

[0004] However, in practice, when the cleaning equipment is operating, if the suction fan has a high operating power, the sewage will be drawn into the suction pipe with a strong suction force and rise rapidly within the pipe. Upon reaching the pipe opening, it will rush out at a high speed and fall into the sewage tank. However, when the sewage falls into the sewage tank at this rapid speed, it splashes up, causing a surge. Furthermore, when the user pushes or pulls the machine, the liquid in the sewage tank will slosh around. When this sloshing occurs and the sewage falls into the tank at a high speed, a severe surge will occur. When this surge occurs, the splashed liquid can easily enter the suction fan. This is especially true when the machine is lying flat, as the sewage in the tank is closer to the suction fan, making it even easier for splashed liquid to enter the suction fan during a surge. If liquid from the sewage tank enters the suction fan, it will put the suction fan in an unsafe operating state, posing a safety hazard. At the same time, liquid entering the suction fan can also easily cause damage due to water ingress, reducing the service life of the suction fan. Summary of the Invention

[0005] The purpose of this application is to provide a control method for cleaning equipment, which can prevent water from entering the suction fan caused by surges.

[0006] This application provides a control method for a cleaning device, which is applied to the cleaning device. The cleaning device includes a control system, a floor brush, a body, and a vacuuming system. The vacuuming system includes a wastewater tank and a vacuum fan for sucking waste liquid and / or dirt into the wastewater tank. The control system includes a main control unit and a surge detection circuit connected to the main control unit. The wastewater tank is provided with a conductor assembly connected to the surge detection circuit and a surge detection assembly.

[0007] Control methods for cleaning equipment include:

[0008] The main control unit determines whether it has received a surge detection signal from the surge detection circuit;

[0009] If a surge detection signal is received, the operating status of the suction fan will be adjusted.

[0010] When a surge occurs in the liquid inside the sewage tank, the conductor assembly and the surge detection assembly are connected by the surging liquid. The conductor assembly, the surge detection assembly, and the surge detection circuit form a first loop, and the surge detection circuit sends a surge detection signal to the main control unit.

[0011] In one embodiment, regulating the operating state of the suction fan includes:

[0012] Reduce the operating power of the suction fan;

[0013] Alternatively, stop the suction fan from running.

[0014] In one embodiment, regulating the operating state of the suction fan includes:

[0015] The main control unit receives a surge detection signal and determines whether the operating time of the cleaning equipment exceeds a preset time threshold.

[0016] If the cleaning equipment runs for more than a preset time threshold, the suction fan will stop running.

[0017] If the cleaning equipment's operating time does not exceed the preset time threshold, reduce the operating power of the suction fan.

[0018] In one embodiment, the control system further includes a liquid full detection circuit connected to the main control unit, a conductor assembly connected to the liquid full detection circuit, and a liquid full detection component connected to the liquid full detection circuit is provided inside the wastewater tank; the control method for the cleaning equipment further includes:

[0019] The main control unit determines whether it has received a full liquid detection signal from the full liquid detection circuit;

[0020] If a full liquid detection signal is received, the suction fan will be stopped.

[0021] When the liquid in the sewage tank reaches the maximum water level, the conductor assembly and the liquid full detection assembly are connected by the liquid in the sewage tank. The conductor assembly, the liquid full detection assembly and the liquid full detection circuit form a second loop. The liquid full detection circuit sends a liquid full detection signal to the main control unit.

[0022] In one embodiment, the sewage tank is provided with a maximum water level indicator; the conductor assembly is provided with a first conductive surface connected to the surge detection circuit, and the surge detection assembly is provided with a first surge detection head connected to the surge detection circuit; when the sewage tank is upright, the first conductive surface is not higher than the maximum water level indicator, and the first surge detection head is not lower than the first conductive surface.

[0023] When a surge occurs in the liquid inside the sewage tank, the first conductive surface and the first surge detection head are connected by the surging liquid.

[0024] In one embodiment, the conductor assembly is provided with a first conductive surface connected to the liquid full detection circuit, and the liquid full detection assembly is provided with a liquid full detection head connected to the liquid full detection circuit; the sewage tank is provided with a maximum water level mark; when the sewage tank is upright, the liquid full detection head is not higher than the maximum water level mark and not lower than the first conductive surface.

[0025] When the machine body is tilted and the liquid in the sewage tank reaches the level corresponding to the highest water level mark, the first conductive surface and the liquid full detection head are connected by the liquid in the sewage tank.

[0026] In one embodiment, the conductor assembly is provided with a first conductive surface connected to the liquid full detection circuit, and the liquid full detection assembly is provided with a liquid full detection head connected to the liquid full detection circuit; when the sewage tank is lying flat, the first conductive surface is located below the liquid full detection head.

[0027] When the machine body is in a flat position and the liquid in the sewage tank reaches the water level corresponding to the liquid full detection head, the first conductive surface and the liquid full detection head are connected by the liquid in the sewage tank.

[0028] In one embodiment, the conductor assembly is provided with a first conductive surface connected to the surge detection circuit, and the surge detection assembly is provided with a first surge detection head connected to the surge detection circuit; the liquid full detection assembly is provided with a liquid full detection head connected to the liquid full detection circuit; when the sewage tank is lying flat, the first surge detection head is not higher than the liquid full detection head, and the first surge detection head is higher than the first conductive surface.

[0029] When the sewage tank is lying flat, it has a central axis that divides the sewage tank into upper and lower parts. The liquid full detection head is located on the central axis, or the liquid full detection head is located below the central axis.

[0030] In one embodiment, the conductor assembly has a first conductive surface connected to the surge detection circuit, the conductor assembly has a second conductive surface connected to the liquid full detection circuit, the surge detection assembly has a first surge detection head connected to the surge detection circuit, the liquid full detection assembly has a liquid full detection head connected to the liquid full detection circuit, and the sewage tank includes a first cavity and a second cavity located below the first cavity, the first conductive surface and the first surge detection head are located in the first cavity, and the second conductive surface and the liquid full detection head are located in the second cavity.

[0031] When the liquid in the sewage tank reaches the maximum water level, the second conductive surface and the liquid full detection head are connected by the liquid in the second cavity; when a surge occurs in the liquid in the sewage tank, the first conductive surface and the first surge detection head are connected by the surging liquid.

[0032] In one embodiment, the surge detection assembly is further provided with a second surge detection head connected to the surge detection circuit, and the second surge detection head is located in the second cavity;

[0033] When a surge occurs in the liquid inside the sewage tank, the second conductive surface and the second surge detection head are connected by the surging liquid.

[0034] Those skilled in the art will understand that the aforementioned control method for a cleaning device of the present invention has at least the following beneficial effects:

[0035] In this application, a conductor assembly, a surge detection assembly, and a surge detection circuit are installed in the cleaning equipment. The conductor assembly and surge detection assembly are connected to the surge detection circuit, which is then connected to a main control unit. The main control unit determines whether a surge has occurred in the wastewater tank based on the signal transmitted by the surge detection circuit. Furthermore, when a surge is detected in the wastewater tank, the operating status of the suction fan is adjusted; by adjusting the operating status of the suction fan, the surge phenomenon in the wastewater tank is reduced. Even further, by reducing the surge phenomenon, water ingress into the suction fan is prevented, ensuring that the suction fan operates in a safer state and avoiding safety hazards. Additionally, preventing water ingress into the suction fan also extends its service life and prevents damage caused by water ingress.

[0036] In summary, this application can effectively detect whether a surge occurs in the liquid inside the sewage tank, and take corresponding measures to reduce the surge phenomenon inside the sewage tank after a surge is detected. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly described below.

[0038] Figure 1 A structural schematic diagram of the first type of cleaning equipment provided in this application;

[0039] Figure 2 A structural schematic diagram of the second type of cleaning equipment provided in this application;

[0040] Figure 3 A flowchart illustrating the control method for the cleaning equipment provided in this application;

[0041] Figure 4 A schematic diagram showing the connection between the surge detection component and the control system provided in this application;

[0042] Figure 5 A schematic diagram showing the connection between the surge detection component and the liquid level detection component provided in this application and the control system;

[0043] Figure 6 A schematic diagram of a first implementation of the surge detection component for an upright sewage tank provided in this application;

[0044] Figure 7 A schematic diagram illustrating a first implementation of the surge detection component for a sewage tank lying flat, as provided in this application;

[0045] Figure 8 A schematic diagram illustrating a second implementation of the surge detection component for an upright sewage tank provided in this application;

[0046] Figure 9 A schematic diagram illustrating a second implementation of the surge detection component for a sewage tank lying flat, as provided in this application;

[0047] Figure 10 A schematic diagram illustrating a third implementation of the surge detection component for an upright sewage tank provided in this application;

[0048] Figure 11 This is a schematic diagram of a third implementation of the surge detection component for a sewage tank lying flat, as provided in this application.

[0049] Figure label:

[0050] 1-Body; 2-Floor brush; 3-Sewage tank; 4-Clean water tank; 5-Sewage suction fan; 6-Power source system; 8-Display screen; 13-Air intake channel; 15-Positioning part; 21-Cleaning component; 22-Roller; 23-Spray nozzle; 24-Sewage suction port; 25-Roller brush chamber; 31-Tank body; 32-Lid; 33-Sewage suction pipe; 34-First vent; 35-Conductor assembly; 36-Surge detection assembly; 37-Liquid full detection assembly; 38-Baffle plate; 39-Second vent; 61-Housing shell; 62-Battery pack; 100-Cleaning equipment; 200 - Control system; 210 Main control unit; 220 Surge detection circuit; 221 First surge detection circuit; 222 Second surge detection circuit; 223 Third surge detection circuit; 230 Liquid full detection circuit; 311 Partition; 312 Vent; 331 Pipe opening; 351 First conductive surface; 352 Second conductive surface; 361 First surge detection head; 362 Second surge detection head; 371 Liquid full detection head; 410 First surge detection element; 420 Second surge detection element; 421 Third surge detection head. Detailed Implementation

[0051] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0052] Similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0053] Example 1:

[0054] Please refer to Figure 1 This is a structural schematic diagram of the first type of cleaning device 100 provided in this application. Figure 1As shown, the cleaning equipment 100 includes a body 1 and a floor brush 2 rotatably connected to the body 1; the cleaning equipment 100 also includes a cleaning system, a liquid supply system, and a suction system. The cleaning system includes a cleaning component 21 mounted on the floor brush 2 for cleaning the surface to be cleaned, a drive motor (not shown in the figure) mounted on the floor brush 2 and connected to the cleaning component 21 for rotating the cleaning component 21, a roller 22 mounted on the floor brush 2 for assisting the movement of the cleaning equipment 100, and a scraper (not shown in the figure) mounted on the floor brush 2 that abuts against the cleaning component 21 and scrapes the cleaning component 21; the floor brush 2 has a roller brush cavity 25, and the cleaning component 21 and the scraper are disposed in the roller brush cavity 25. For example, the cleaning component 21 can be a single roller, a double roller, or a tracked cleaning cloth. The liquid supply system includes a water spray nozzle 23 disposed on the roller brush chamber 25 and facing the cleaning component 21, a clean water tank 4 disposed on the rear side of the machine body 1, a water pump (not shown in the figure), and a liquid supply pipeline (not shown in the figure) disposed inside the machine body 1 for connecting the water spray nozzle 23 and the clean water tank 4. The sludge suction system includes a sludge suction port 24 disposed on the roller brush chamber 25 and facing the cleaning component 21, a detachably disposed wastewater tank 3 on the machine body 1, a sludge suction fan 5 disposed on the machine body 1 for sucking sludge and / or dirt into the wastewater tank 3, and a sludge suction pipe 33 connecting the wastewater tank 3 and the sludge suction port 24, with the pipe opening 331 of the sludge suction pipe 33 extending into the wastewater tank 3. The sludge suction pipe 33 extending into the wastewater tank 3 can be close to the side wall of the wastewater tank, or it can be away from the side wall of the sludge suction pipe 33. For example, the sludge suction fan 5 can be a vacuum motor.

[0055] The main body 1 is equipped with an independent and detachable power source system 6. The suction fan 5 is located inside the power source system 6. The power source system 6 also contains a control system 200 (not shown in the figure) and a battery pack 62 for power supply. The housing 61 of the power source system 6 is also equipped with a display screen 8. The control system 200 includes a main control unit 210. The upper end of the main body 1 has a forward-protruding positioning part 15. The positioning part 15 contains a positioning cavity, and the power source system 6 is installed in the positioning cavity.

[0056] The wastewater tank 3 is positioned below the positioning part 15. The wastewater tank 3 includes a tank body 31 and a cover 32 that is sealed and closed onto the tank body 31. The port 331 of the suction pipe 33 extends into the tank body 31. The positioning part 15 is provided with an air inlet channel 13 that communicates with the suction fan 5. The cover 32 is provided with a first vent 34 that communicates with the air inlet channel 13. The tank body 31 is provided with a second vent 39 (not shown in the figure) that communicates with the first vent 34. The cover 32 is also provided with a receiving cavity for placing a gas-liquid separation structure, such as HEPA.

[0057] The main control unit 210 is connected to the drive motor, water pump, and suction fan 5. The main control unit 210 can control whether the cleaning component 21 is running by controlling the working status of the drive motor; the main control unit 210 can control whether the liquid supply system supplies liquid by controlling the working status of the water pump; in addition, the main control unit 210 can also control whether the suction fan 5 is running.

[0058] Please refer to Figure 2 This is a structural schematic diagram of the second type of cleaning device 100 provided in this application. Figure 1 The difference between the cleaning equipment 100 shown is that, Figure 2 The clean water tank 4 of the cleaning equipment 100 is located on the front side of the machine body 1, and the wastewater tank is located on the rear side of the machine body 1.

[0059] The cleaning device 100 has a tilted working state and a flat working state. In this invention, the tilted working state of the device 1 means that when a user uses the cleaning device 100 to clean an open surface such as a floor or carpet, the user will tilt the device to the most comfortable position. Therefore, when cleaning the surface, the device 1 is not upright; it forms an angle α with the surface. The user adjusts the angle α according to their height to meet different cleaning needs, thus keeping the device 1 in a tilted working state. When cleaning surfaces covered by objects such as sofas or beds, the user will adjust the angle α to be even smaller or even zero. The tilted working state here refers to the device 1 being in a tilted working state when the angle α is greater than the aforementioned preset angle threshold; and in a flat working state when the angle α is less than or equal to the aforementioned preset angle threshold. In this invention, the aforementioned preset angle threshold is set to 20–30°. Since the sewage tank is mounted on the machine body, it has two working states as it moves with the machine body: an inclined working state and a flat working state.

[0060] The cleaning equipment 100 cleans the surface to be cleaned on the following principle:

[0061] The main control unit 210 controls the operation of the drive motor, the liquid supply system, and the suction fan 5. After the drive motor starts, it drives the cleaning component 21 to rotate. After the liquid supply system starts, it supplies liquid to the surface to be cleaned and the cleaning component 21, keeping the cleaning component 21 wet. Then, the wet cleaning component 21 rotates and rubs against the surface to be cleaned, cleaning it. When the cleaning component 21 cleans the surface, dirt will adhere to its surface. To ensure cleaning effectiveness, the scraper on the floor brush 2 will... The cleaning component 21 is scraped to remove some of the dirt and / or liquid adhering to it. The scraped dirt and / or liquid, as well as the dirt and / or liquid formed on the surface to be cleaned after cleaning, are sucked by the suction fan 5 through the suction port 24 into the suction pipe 33. Then, under the suction force of the suction fan 5, it rises along the suction pipe 33. When it rises to the pipe opening 331 of the suction pipe 33, it will detach from the pipe opening 331 and fall naturally into the bucket 31 under the action of gravity. The above process is repeated until the cleaning of the surface to be cleaned is completed.

[0062] However, in practice, if the operating power of the suction fan 5 is high, dirt and / or sewage will be drawn into the suction pipe 33 with a large suction force and rise rapidly within the suction pipe 33. When it reaches the pipe opening 331, it will rush out of the pipe opening 331 at a relatively high speed and fall into the bucket 31. However, when the sewage falls into the bucket 31 at a relatively high speed, it will splash up the sewage in the bucket 31, causing a surge. In addition, when the user pushes or pulls the machine body 1, the liquid in the bucket 31 will shake. When the liquid in the bucket 31 shakes and the sewage falls into the bucket 31 at a relatively high speed, a serious surge will occur in the bucket 31. When the sewage in the bucket 31 surges, the liquid splashed up by the surge can easily enter the suction fan 5. Especially when the machine body 1 is in a flat position, the sewage in the tank 31 is tilted at a large angle, getting closer to the second vent 39 on the tank 31. The second vent 39 is connected to the suction fan 5 through the air intake channel 13 and the first vent 34. In this case, when a surge occurs in the tank 31, the liquid splashed up by the surge can easily enter the suction fan 5 through the first vent 34, the second vent 39, and the air intake channel 13. After the liquid enters the suction fan 5, it will put the suction fan 5 in an unsafe operating state, posing a safety hazard. At the same time, the liquid entering the suction fan 5 can also easily cause damage to the suction fan 5 due to water ingress, reducing the service life of the suction fan 5. To solve the above-mentioned technical defects, the following embodiment of this application provides a control method for a cleaning device 100.

[0063] The specific principles of the control method for the cleaning equipment 100 in this application will be explained in detail below.

[0064] Please refer to Figure 3 This is a flowchart illustrating the control method for the cleaning equipment 100 provided in this application. This method is applied to... Figure 1 or Figure 2 The method is performed on the cleaning equipment 100, and is executed by the main control unit 210. For example... Figure 3 As shown, the method includes the following steps S210-S220. The working principle of the method will be explained in detail below.

[0065] Step S210: The main control unit 210 determines whether it has received a surge detection signal sent by the surge detection circuit 220.

[0066] Among them, such as Figure 4 As shown in the figure, in this application, the control system 200 also includes a surge detection circuit 220 connected to the main control unit 210; the sewage tank 3 is provided with a conductor assembly 35 and a surge detection assembly 36 connected to the surge detection circuit 220. Specifically, as shown in the figure... Figure 4 As shown, the sewage tank 3 includes a tank body 31 and a cover 32 that is sealed and closed on the tank body 31; the conductor assembly 35 and the surge detection assembly 36 are at least partially located inside the tank body 31, and the conductor assembly 35 and the surge detection assembly 36 are fixed on the cover 32.

[0067] In this step, when the cleaning equipment 100 is working, if the suction fan 5 has a high suction speed, dirt and / or liquid will be sucked into the suction pipe 33 with a large suction force and will rise rapidly within the suction pipe 33. When it reaches the pipe opening 331 of the suction pipe 33, it will rush out of the pipe opening 331 at a high speed and fall into the bucket 31. When the liquid falls into the bucket 31 at a high speed, it will splash up the liquid in the bucket 31, causing a surge in the liquid inside the bucket 31. When the liquid in the bucket 31 surges, the conductor assembly 35 and the surge detection assembly 36 will be connected by the surging liquid; after the conductor assembly 35 and the surge detection assembly 36 are connected, the conductor assembly 35, the surge detection assembly 36, and the surge detection circuit 220 form a first loop. After the first loop is formed, the surge detection circuit 220 sends a surge detection signal to the main control unit 210. After receiving the surge detection signal, the main control unit 210 can continue to execute the following step S220. Among them, Figure 4 The middle arrow indicates the direction of the movement of sewage and / or waste within the suction pipe 33.

[0068] Step S220: If a surge detection signal is received, adjust the working status of the suction fan 5.

[0069] In this step, after receiving the surge detection signal, the main control unit 210 indicates that a surge has occurred in the sewage inside the tank 31. At this time, the main control unit 210 can adjust the working state of the suction fan 5. By adjusting the working state of the suction fan 5, the surge phenomenon inside the tank 31 is reduced. Furthermore, by reducing the surge phenomenon inside the tank 31, the surged liquid is prevented from entering the suction fan 5.

[0070] As can be seen from the above, in this application, the cleaning equipment 100 is equipped with a conductor assembly 35, a surge detection assembly 36, and a surge detection circuit 220. The conductor assembly 35 and the surge detection assembly 36 are connected to the surge detection circuit 220, which is then connected to the main control unit 210. The main control unit 210 then determines whether a surge has occurred in the sewage tank 3 based on the signal transmission from the surge detection circuit 220. Furthermore, when a surge is detected in the sewage tank 3, the operating state of the suction fan 5 is adjusted; by adjusting the operating state of the suction fan 5, the surge phenomenon in the sewage tank 3 is reduced. Further, by reducing the surge phenomenon, water ingress into the suction fan 5 is prevented, ensuring that the suction fan 5 can operate in a safer state and avoiding safety hazards. In addition, preventing water ingress into the suction fan 5 also extends its service life and prevents damage due to water ingress.

[0071] In step S220 above, if the main control unit 210 detects a surge in the sewage in the tank 31, it can reduce the operating power of the suction fan 5. By reducing the operating power of the suction fan 5, the suction force of the suction fan 5 on the sewage and / or waste is reduced. After the suction force is reduced, the speed at which the sewage and / or waste falls into the sewage tank 3 is slower, and the sewage in the sewage tank 3 is less likely to be splashed, or the height of the splash is reduced, and the surge phenomenon can be alleviated. After the surge phenomenon is alleviated, the suction fan 5 is less likely to be flooded, and the suction fan 5 is effectively protected.

[0072] In step S220 above, if the main control unit 210 detects a surge of sewage in the tank 31, it can control the suction fan 5 to stop operating. After the suction fan 5 stops operating, it no longer sucks up sewage and / or waste, so no sewage and / or waste will enter the tank 31, the sewage in the tank 31 will not be splashed, and no surge will occur in the tank 31. Since no surge occurs in the tank 31, no liquid will enter the suction fan 5, thus protecting the suction fan 5.

[0073] In step S220 above, if the main control unit 210 detects a surge of sewage in the tank 31, it can determine whether the running time of the cleaning equipment 100 exceeds a preset time threshold.

[0074] (1) If the running time of the cleaning equipment 100 exceeds the preset time threshold, control the suction fan 5 to stop running.

[0075] In this embodiment, if the running time of the cleaning device 100 exceeds a preset time threshold, it indicates that there is a large amount of sewage in the tank 31. If the sewage in the tank 31 surges at this time, it is more likely to enter the suction fan 5. Therefore, in this embodiment, when the sewage in the tank 31 surges and the running time of the cleaning device 100 exceeds the preset time threshold, the suction fan 5 is controlled to stop operating. By stopping the suction fan 5, the surge of sewage in the tank 31 is stopped, thereby preventing the surging sewage from entering the suction fan 5.

[0076] (2) If the running time of the cleaning equipment 100 does not exceed the time threshold, reduce the operating power of the suction fan 5.

[0077] In this embodiment, if the running time of the cleaning device 100 does not exceed a preset time threshold, it indicates that there is relatively little sewage in the tank 31. In this case, directly stopping the suction fan 5 when a surge of sewage occurs in the tank 31 would affect the cleaning efficiency of the surface to be cleaned. Therefore, in this embodiment, when a surge of sewage occurs in the tank 31 and the running time of the cleaning device 100 does not exceed the preset time threshold, the operating power of the suction fan 5 is reduced. By reducing the operating power of the suction fan 5, the surge phenomenon in the tank 31 is mitigated. By mitigating the surge phenomenon in the tank 31, water is less likely to enter the suction fan 5, thus protecting it. Simultaneously, by reducing the operating power of the suction fan 5, the cleaning device 100 can continue cleaning the surface to be cleaned, ensuring the cleaning efficiency of the floor.

[0078] Example 2:

[0079] like Figure 5 As shown, the control system 200 also includes a full-fill detection circuit 230 connected to the main control unit 210. A full-fill detection component 37 is provided in the wastewater tank 3, and the full-fill detection component 37 and the conductor component 35 are connected to the full-fill detection circuit 230. Specifically, as... Figure 5 As shown, the sewage tank 3 includes a tank body 31 and a cover 32 that is sealed and closed on the tank body 31; the liquid full detection component 37 is at least partially located inside the tank body 31 and is fixed on the cover 32.

[0080] In this embodiment, the conductor assembly 35, surge detection assembly 36, and surge detection circuit 220 can cooperate to detect whether a surge has occurred in the sewage in the sewage tank; simultaneously, the conductor assembly 35, liquid full detection assembly 37, and liquid full detection circuit 230 can cooperate to detect whether the sewage in the sewage tank has risen to the maximum water level. That is to say, this embodiment can perform surge detection and liquid full detection simultaneously. The specific detection principle is explained below:

[0081] Step S310: When the cleaning equipment 100 is working, the main control unit 210 monitors the signal transmission status of the surge detection circuit 220 and the liquid full detection circuit 230 in real time.

[0082] In this step, while the cleaning equipment 100 is operating, the main control unit 210 monitors the signal transmission status of the surge detection circuit 220 and the liquid full detection circuit 230 in real time. If the main control unit 210 detects that the surge detection circuit 220 is sending a surge detection signal, it executes the following step S320. If the main control unit 210 detects that the liquid full detection circuit 230 is sending a liquid full detection signal, it executes the following step S330.

[0083] Step S320: If a surge detection signal is detected by the surge detection circuit 220, the operating power of the suction fan will be reduced.

[0084] In this step, if the main control unit 210 detects that the surge monitoring circuit sends a surge detection signal to it, it indicates that a surge has occurred in the sewage tank. At this time, the operating power of the sewage suction is reduced to alleviate the surge phenomenon in the sewage tank, prevent water from entering the sewage suction fan, and protect the sewage suction fan.

[0085] Step S330: If the liquid full detection circuit 230 sends a liquid full detection signal to it, control the sewage suction fan to stop running.

[0086] When the cleaning equipment 100 is working, the suction fan 5 continuously draws the waste liquid into the tank 31. As the working time of the cleaning equipment 100 increases, the water level in the tank 31 gradually rises. When the waste liquid rises to the maximum level, it connects the conductor assembly 35 and the liquid full detection assembly 37. After the conductor assembly 35 and the liquid full detection assembly 37 are connected, the conductor assembly 35, the liquid full detection assembly 37, and the liquid full detection circuit 230 form a second loop. After the second loop is formed, the liquid full detection circuit 230 sends a liquid full detection signal to the main control unit 210.

[0087] Therefore, in this step, if the main control unit 210 detects that the liquid full detection circuit 230 sends a liquid full detection signal, it indicates that the water level of the sewage in the tank 31 has reached the maximum water level. If the sewage continues to rise at this time, it can easily enter the suction fan 5, causing water to enter the suction fan 5. Especially when the machine body 1 is in a horizontal position, the distance between the sewage and the second vent 39 is closer, making it easier for the sewage to enter the suction fan 5 through the second vent 39. Therefore, to prevent water from entering the suction fan 5, the suction fan 5 is controlled to stop working.

[0088] As can be seen from the above, the cleaning equipment 100 in this application can simultaneously detect whether the sewage in the tank 31 is surging and whether it is full. The equipment has a high degree of intelligence, which enhances the product competitiveness of the equipment and improves the user experience.

[0089] It is worth noting that liquid exiting from the inlet 331 of the suction pipe 33 may splash onto the conductor assembly 35, surge detection assembly 36, and liquid level detection assembly 37, thereby affecting the liquid level detection and surge detection. To solve the above problem, such as Figure 6 As shown, in this application, a baffle plate 38 is provided inside the tank body 31 of the sewage tank 3. By providing the baffle plate 38, the liquid that comes out from the pipe opening 331 of the sewage suction pipe 33 is prevented from splashing onto the conductor assembly 35, the surge detection assembly 36 and the liquid full detection assembly 37, thereby ensuring the accuracy of the liquid full detection and surge detection.

[0090] Example 3:

[0091] like Figure 6 The diagram shown is a schematic diagram of the connection between the sewage tank 3, surge detection component 36, liquid full detection component 37, and conductor component 35 provided in this application and the main control unit 210. Figure 6 A schematic diagram showing the positions of surge detection component 36, conductor component 35, and liquid full detection component 37 when the sewage tank 3 is upright; Figure 7 This diagram illustrates the positions of the surge detection component 36, conductor component 35, and liquid full detection component 37 when the sewage tank 3 is lying flat (i.e., the angle between the sewage tank 3 and the surface to be cleaned is 0°). In this embodiment, the conductor component 35 has a first conductive surface 351 connected to the surge detection circuit 220 and also connected to the liquid full detection circuit 230. The surge detection component 36 has a first surge detection head 361 connected to the surge detection circuit 220, and the liquid full detection component 37 has a liquid full detection head 371 connected to the liquid full detection circuit 230. In this embodiment, the liquid full detection circuit 230 and the surge detection circuit 220 are respectively connected to different I / O ports of the main control unit 210. Figure 6As shown, when the sewage tank 3 is upright, the first conductive surface 351 and the full-level detection head 371 are not higher than the highest water level mark, and the first surge detection head 361 and the full-level detection head 371 are not lower than the first conductive surface 351. The first surge detection head 361 can be located above the highest water level mark, or at the highest water level mark, or below the highest water level mark. Preferably, the first surge detection head 361 is close to the first conductive surface 351. Figure 7 As shown, when the sewage tank 3 is lying flat, the first conductive surface 351 is located below the full-load detection head 371, the first surge detection head 361 is not higher than the full-load detection head 371, and the first surge detection head 361 is higher than the first conductive surface 351. For example, as shown... Figure 7 As shown, when the sewage tank 3 rotates with the machine body 1 to a flat position, the sewage tank 3 has a central axis surface that divides the sewage tank 3 into upper and lower parts. The liquid full detection head 371 is located on the central axis surface, or the liquid full detection head 371 is located below the central axis surface.

[0092] Specifically, in this embodiment, as Figure 6 As shown, the highest water level indicator is located in the middle of the sewage tank 3, that is, at half the height of the inner cavity of the sewage tank 3. When the sewage tank 3 is upright, the first conductive surface 351 on the conductor assembly 35 is located 15mm below the highest water level indicator, the first surge detection head 361 of the surge detection assembly 36 is located 8mm above the highest water level indicator, and the liquid full detection head 371 of the liquid full detection assembly 37 is located 5mm below the highest water level indicator. When the sewage tank is lying flat, as shown... Figure 7As shown, conductor assembly 35 is located 9mm above the side wall of sewage tank 3, first surge detection head 361 is located 5mm above conductor assembly 35, and liquid full detection assembly 37 and liquid full detection head 371 are located 3mm below the horizontal central axis of sewage tank 3. When sewage tank 3 is in a horizontal position, we can see that the second vent 39 is located above sewage tank 3. Since the thickness to height ratio of sewage tank 3 is much smaller, the distance between the liquid surface of sewage tank 3 and the second vent 39 is much closer. If the power of the suction fan 5 remains unchanged, the height at which the liquid surface enters sewage tank 3 remains unchanged, and the liquid can more easily enter the second vent 39. If the customer pushes the machine body 1 back and forth to perform cleaning work, even if there is little sewage in the tank, sewage can more easily enter the second vent 39 when a surge occurs, thus causing sewage to enter the machine body 1 and contaminate the suction motor. In this embodiment, such a structure can detect the surge phenomenon when sewage tank 3 is in a horizontal position and the suction motor is working. The device detects the surge of wastewater and adjusts the power of the suction motor in time to reduce the surge height, allowing the surface cleaning device to work effectively even when lying flat. It effectively cleans the surface to be cleaned, especially controlling the surge when the wastewater tank is almost full. This prevents wastewater from entering the second vent 39 before the wastewater tank is full and contaminating the motor. When there is a lot of wastewater, it reaches the full detection component 37, which can also determine the full state and stop the suction motor and water pump brush 2. This alerts the customer that the wastewater tank 3 is full and can be emptied in time. The wastewater tank 3 is also easy to clean, making it convenient for the customer to carry out the next cleaning work. It also prevents the problem of too much wastewater entering the second vent 39 and contaminating the motor.

[0093] Of course, it is understandable that when the sewage tank is upright, the first surge detection head 361 of the surge detection component 36 can also be located 8mm below the highest water level mark (e.g., Figure 5 (as shown in the image); or; the first surge detection head 361 can also be located 5mm below the highest water level mark, etc.; in the horizontal direction, as long as the first surge detection head 361 of the surge detection component 36 is closer to the conductor component 35 than the liquid full detection head of the liquid full detection component 37, the liquid surface can touch the first surge detection head 361 first when a surge occurs. These are all solutions that do not depart from the concept of the present invention and are all within the protection scope of the present invention. They will not be listed one by one here.

[0094] The surge detection component 36, the conductive component, and the liquid full detection component 37 can all be metal electrodes, which are fixed to the cover 32 of the sewage tank 3. An insulating shell is fitted onto the outer surface of the metal electrode. The insulating shell can be made of non-conductive materials such as plastic or rubber, while the metal conductor can be made of rust-resistant material. The insulating shell can be integrally formed with the shell of the sewage tank 3, or it can be detachably fitted onto the outer surface of the metal electrode. On one hand, the insulating shell has a notch, which the metal electrode covers, forming a first conductive surface 351, a first surge detection head 361, and a liquid full detection head 371 at the notch. The notch can be located on the side of the insulating shell. On the other hand, the lower end of the insulating shell is not sealed, and the bottom end of the metal electrode protrudes from the lower end of the insulating shell, forming the first conductive surface 351, the first surge detection head 361, and the liquid full detection head 371. These two methods of forming the first conductive surface 351, the first surge detection head 361, and the liquid full detection head 371 can be used in combination or individually.

[0095] In practice, since the surge detection component 36, the conduction component, and the liquid level detection component 37 are all metal electrodes, using the entire metal electrode for surge and liquid level detection would result in inaccurate detection. Furthermore, using the entire metal electrode for surge and liquid level detection also increases the corrosion rate of the metal electrode. Therefore, in this embodiment, a conduction surface and a detection head are provided on the metal electrode. Using the conduction surface and the detection head for surge and liquid level detection ensures the accuracy of the detection while slowing down the corrosion rate of the metal electrode, effectively protecting it.

[0096] The principle of surge detection in this embodiment will be explained below:

[0097] When the machine body 1 operates in an inclined state and a surge occurs in the liquid inside the tank 31, the liquid in the sewage tank 3 is splashed up along a first direction. The splashed liquid conducts a connection between the first conductive surface 351 and the first surge detection head 361. After the connection is established, the first conductive surface 351, the first surge detection head 361, and the surge detection circuit 220 form a loop. After the loop is formed, the surge detection circuit 220 sends a surge detection signal to the main control unit 210. After receiving the surge detection signal, the main control unit 210 can know that a surge has occurred inside the tank 31.

[0098] When the machine body 1 operates in a horizontal position and a surge occurs in the liquid inside the sewage tank 3, the liquid inside the sewage tank 3 is splashed up along a second direction. The splashed liquid conducts a circuit between the first conductive surface 351 and the first surge detection head 361. After the circuit is formed, the first conductive surface 351, the first surge detection head 361, and the surge detection circuit 220 form a loop. After the loop is formed, the surge detection circuit 220 sends a surge detection signal to the main control unit 210. After receiving the surge detection signal, the main control unit 210 can know that a surge has occurred in the sewage tank 3.

[0099] The principle of liquid full detection in this embodiment will be explained below:

[0100] When the cleaning equipment 100 operates in an inclined state, the suction fan 5 continuously draws sewage into the tank 31. The water level in the tank 31 gradually rises along the first direction. When the sewage rises to the level corresponding to the highest water level indicator, the sewage connects the first conductive surface 351 and the full-fill detection head 371. After the connection, the first conductive surface 351, the full-fill detection head 371, and the full-fill detection circuit 230 form a loop. After the loop is formed, the full-fill detection circuit 230 sends a full-fill detection signal to the main control unit 210. After receiving the full-fill detection signal, the main control unit 210 can know that the sewage tank 3 is full, and thus performs full-fill detection in this way. Among them, when the machine body 1 is in an inclined state, the water level corresponding to the highest water level indicator is the maximum water level mentioned in step S310 above.

[0101] When the cleaning equipment 100 is operating in a horizontal position, the suction fan 5 continuously draws the sewage into the tank 31. As the cleaning equipment 100 operates for longer periods, the water level in the tank 31 gradually rises along the second direction. When the sewage rises to the level corresponding to the full-load detection head 371, the sewage connects the first conductive surface 351 and the full-load detection head 371. After connection, the first conductive surface 351, the full-load detection head 371, and the full-load detection circuit 230 form a loop. After the loop is formed, the full-load detection circuit 230 sends a full-load detection signal to the main control unit 210. Upon receiving the full-load detection signal, the main control unit 210 can know that the sewage tank 3 is full, and thus performs full-load detection in this way. When the machine body 1 is in a horizontal position, the water level corresponding to the full-load detection head 371 is the maximum water level mentioned in step S310 above.

[0102] Of course, we can understand that in this embodiment, surge detection and liquid full detection can also be performed simultaneously. For details of the detection principle, please refer to Embodiment 2 above, which will not be repeated here.

[0103] Example 4:

[0104] Please refer to Figure 8This is a schematic diagram of a second implementation of the surge detection component 36 for an upright sewage tank 3 provided in this application.

[0105] Please refer to Figure 9 This is a schematic diagram illustrating a second implementation of the surge detection component 36 for the sewage tank 3 when it lies flat, as provided in this application. Figure 8 and Figure 9 As shown, a partition 311 is provided inside the barrel body 31. The partition 311 is a straight plate and is placed horizontally inside the barrel body 31. The partition 311 divides the inner cavity of the barrel body 31 into a first cavity A located at the top and a second cavity B located at the bottom. The partition 311 is provided with a vent 312 that connects the first cavity A and the second cavity B. The vent 312 is connected to the second vent 39 on the barrel body 31. The conductor assembly 35 has a second conductive surface 352 and a first conductive surface 351 located above the second conductive surface 352. The conductor assembly 35 may include only one conductor element, in which case the first conductive surface 351 and the second conductive surface 352 are both located on the same conductor element. Alternatively, the conductor assembly 35 may have two conductor elements, with the first conductive surface 351 and the second conductive surface 352 located on different conductor elements. The surge detection circuit 220 includes a first surge detection circuit 221, a liquid level detection circuit 230, and the first surge detection circuit 221, which are respectively connected to different I / O ports of the main control unit 210. The first conductive surface... 351 is connected to the first surge detection circuit 221, and the second conductive surface 352 is connected to the liquid level detection circuit 230; the surge detection assembly 36 includes a first surge detection element 410, on which a first surge detection head 361 is provided, and the first surge detection head 361 is connected to the first surge detection circuit 221; the liquid level detection assembly 37 is provided with a liquid level detection head 371, and the liquid level detection head 371 is connected to the liquid level detection circuit 230; the first conductive surface 351 and the first surge detection head 361 are located in the first cavity A, and the second conductive surface 352 and the liquid level detection head 371 are located in the second cavity B. Figure 8 As shown, when the sewage tank is upright, the first chamber A is located above the second chamber B; the first chamber A is located above the highest water level indicator, which is located inside the second chamber B. The first surge detection head 361 is not lower than the first conductive surface 351; the second conductive surface 352 and the full-level detection head 371 are not higher than the highest water level indicator, and the full-level detection head 371 is not lower than the second conductive surface 352. Figure 9 As shown, when fuselage 1 is in a flat position, Figure 8 The sewage tank 3 will rotate with the body 1 to a horizontal position; when the sewage tank 3 rotates with the body 1 to a horizontal position, the second cavity B is located on one side of the first cavity A. The second conductive surface 352 is located below the liquid full detection head 371, and the first surge detection head 361 is higher than the first conductive surface 351. For example, as shown... Figure 9As shown, when the sewage tank 3 rotates with the machine body 1 to a flat position, the sewage tank 3 has a central axis surface that divides the sewage tank 3 into upper and lower parts. The liquid full detection head 371 is located on the central axis surface, or the liquid full detection head 371 is located below the central axis surface.

[0106] Specifically, in this embodiment, as Figure 8 As shown, when the sewage tank is upright, the highest water level indicator is located in the middle of sewage tank 3, which is half the height of the inner cavity of sewage tank 3. When the sewage tank is upright, the first surge detection head 361 is located 4mm above the partition, the first conductive surface 351 is located 2mm above the partition; the second conductive surface 352 is located 17mm below the highest water level indicator, and the full liquid detection head 371 is located 9mm below the highest water level indicator; as shown... Figure 9 As shown, when the sewage tank is lying flat, the first conductive surface 351 and the second conductive surface 352 are located 6 mm above the side wall of the sewage tank 3, and the first surge detection head 361 is located 4 mm above the first conductive surface 351; the liquid full detection head 371 is located 16 mm above the second conductive surface 352, and the liquid full detection head 371 is located 2 mm below the central axis of the sewage tank 3 in the horizontal direction.

[0107] The formation method of the detection head and the conductive surface is detailed in Embodiment 2 above, and will not be repeated here.

[0108] In this embodiment, the partition divides the inner cavity of the sewage tank 3 into a first cavity A and a second cavity B. When the sewage suction motor is working, the airflow in cavity B and the suction pipe is drawn into cavity A through the connecting port, and then passes through cavity A and enters the machine body through the second vent 39, thereby creating a negative pressure inside the sewage tank. This causes the sewage or waste to enter cavity B of the sewage tank through the suction port and suction pipe. The sewage is stored in the second cavity B for a long time. When the machine body is in an inclined working state, since the liquid surface is still separated from the second vent 39 by cavity A and is far away from the second vent 39, even if the user pushes or pulls the machine body 1, only a very small amount of sewage will enter cavity A, which will be detected by the surge detection device. Then the power of the sewage suction motor is reduced, so the liquid will not enter the second vent 39, nor will it enter the machine body, or at all, sewage will not enter the first cavity A, and the sewage suction motor can work safely. When the sewage tank is laid flat along with the machine body, the height of the liquid level is close to the distance between the connection port 312 and the second vent port 39 due to the small width of the sewage tank. Therefore, a surge detection device is installed to reduce the possibility of sewage entering the cavity A and greatly reduce the possibility of sewage entering the suction fan 5 through the second vent port 39, thus protecting the suction fan 5.

[0109] The principle of surge detection in this embodiment will be explained below:

[0110] When the machine body 1 operates in an inclined state, and a surge occurs in the sewage in the second chamber B of the sewage tank 3, the sewage in the second chamber B will be splashed into the first chamber A along the first direction. After entering the first chamber A, the sewage will conduct through the first conductive surface 351 and the first surge detection head 361. After conduction, the first conductive surface 351, the first surge detection head 361, and the first surge detection circuit 221 form a loop. After the loop is formed, the first surge detection circuit 221 sends a surge detection signal to the main control unit 210. After receiving the surge detection signal, the main control unit 210 can know that a surge has occurred in the sewage tank 3.

[0111] When the machine body 1 operates in a horizontal position and a surge occurs in the liquid inside the sewage tank 3, the liquid inside the sewage tank 3 is splashed in two directions. The splashed liquid conducts a circuit between the first conductive surface 351 and the first surge detection head 361. After the circuit is formed, the first conductive surface 351, the first surge detection head 361, and the first surge detection circuit 221 form a loop. After the loop is formed, the first surge detection circuit 221 sends a surge detection signal to the main control unit 210. After receiving the surge detection signal, the main control unit 210 can know that a surge has occurred in the sewage tank 3.

[0112] The principle of liquid full detection in this embodiment will be explained below:

[0113] When the cleaning equipment 100 is working in an inclined state, the water level of the sewage in the tank 31 gradually rises along the first direction. When the sewage rises to the water level corresponding to the highest water level mark, the sewage connects the second conductive surface 352 and the liquid full detection head 371. After the connection, the second conductive surface 352, the liquid full detection head 371 and the liquid full detection circuit 230 form a loop. After the loop is formed, the liquid full detection circuit 230 sends a liquid full detection signal to the main control unit 210. After receiving the liquid full detection signal, the main control unit 210 can know that the sewage tank 3 has become full.

[0114] When the cleaning equipment 100 is working in a flat position, the water level of the sewage in the tank 31 gradually rises along the second direction. When the sewage rises to the water level corresponding to the full liquid detection head 371, the sewage connects the second conductive surface 352 and the full liquid detection head 371. After the connection, the second conductive surface 352, the full liquid detection head 371, and the full liquid detection circuit 230 form a loop. After the loop is formed, the full liquid detection circuit 230 sends a full liquid detection signal to the main control unit 210. After receiving the full liquid detection signal, the main control unit 210 can know that the sewage tank 3 has become full, and thus perform full liquid detection in this way.

[0115] In the above embodiments, surge detection and liquid full detection can also be performed simultaneously. The specific detection principle is the same as in Embodiment 2, and will not be repeated here.

[0116] Of course, this is understandable. Figure 8 and Figure 9 As shown, the surge detection assembly 36, in addition to the first surge detection element 410, may also include a second surge detection element 420. The second surge detection element 420 is equipped with a third surge detection head 421, which is located within the first cavity A. The surge detection circuit 220 further includes a third surge detection circuit 223. The first conductive surface 351 and the third surge detection head 421 are connected to the third surge detection circuit 223. The third surge detection circuit 223 and the aforementioned first surge detection circuit 221 are connected to different I / O ports of the main control unit 210; for example... Figure 8 As shown, when the sewage tank is upright, the third surge detection head 421 is not lower than the first conductive surface 351. Figure 9 As shown, when the sewage tank is lying flat, the third surge detection head 421 is higher than the first conductive surface 351, and the first surge detection head 361 and the third surge detection head 421 are at different heights.

[0117] Specifically, in this embodiment, when the sewage tank is upright, the third surge detection head 421 is located 2mm above the first conductive surface 351; when the sewage tank is lying flat, the third surge detection head 421 is located 6mm above the first conductive surface 351, and the first surge detection head 361 is located 3mm above the first conductive surface 351.

[0118] The principle of surge detection in this embodiment is basically the same as that in the above embodiment. The difference is that after a surge occurs, liquid is splashed into the first cavity A. The liquid splashed into the first cavity may conduct the first conductive surface 351 and the first surge detection head 361. After conduction, the first surge detection circuit 221 sends a first surge detection signal to the main control unit 210. The liquid splashed into the first cavity A may also conduct the first conductive surface 351 and the third surge detection head 421. After conduction, the first conductive surface 351, the third surge detection head 421, and the third surge detection circuit 223 form a loop. After the loop is formed, the third surge detection circuit 223 sends a third surge detection signal to the main control unit 210. On the one hand, when the main control unit 210 only receives the first surge detection signal or the third surge detection signal, it may not perform any processing. This is because the misidentification may be caused by a few drops of liquid splashing onto the conductive surface and the detection head. On the other hand, when the main control unit 210 receives the first surge detection signal and the third surge detection signal at the same time, it can determine that a surge has occurred in the sewage, and at this time it can regulate the operation status of the sewage suction fan 5.

[0119] As can be seen from the above, in this embodiment, by setting two surge detection heads, the accuracy of surge detection is improved and false identification is avoided.

[0120] It is understandable that when the main control unit 210 receives only the first surge detection signal, it indicates that the surge is relatively weak. In this case, the main control unit 210 can mitigate the surge by reducing the operating power of the suction fan 5, thereby preventing water from entering the suction fan 5. When the main control unit 210 receives the third surge detection signal, it indicates that the surge is relatively severe. In this case, the main control unit 210 can stop the suction fan 5 from operating, thereby preventing water from entering the suction fan 5.

[0121] In the above embodiments, surge detection can be performed using one surge detection element or two surge detection elements, resulting in a high degree of intelligence in surge detection. Furthermore, using two surge detection elements ensures higher reliability and more accurate detection of surge phenomena.

[0122] In this embodiment, surge detection and liquid level detection can also be performed simultaneously. The specific detection principle is explained in detail below:

[0123] Step S410: When the cleaning equipment 100 is working, the main control unit 210 monitors the signal transmission status of the first surge detection circuit 221, the third surge detection circuit 223 and the liquid full detection circuit 230.

[0124] In this step, the main control unit 210 monitors the signal transmission status of the first surge detection circuit 221, the third surge detection circuit 223, and the liquid full detection circuit 230. If the main control unit 210 detects that the first surge detection circuit 221 sends a first surge detection signal, it does not perform any operation. If the main control unit 210 detects that the third surge detection circuit 223 sends a third surge detection signal, it does not perform any operation. If the main control unit 210 detects that both the first surge detection circuit 221 and the third surge detection circuit 223 send a third surge detection signal, it executes step S420. If the main control unit 210 detects that the liquid full detection circuit 230 sends a liquid full detection signal, it executes step S430.

[0125] Step S420: If the first surge detection circuit 221 sends a first surge detection signal to it, at the same time, the third surge detection circuit 223 sends a third surge detection signal to the main control unit 210, controlling the sewage suction fan to stop running.

[0126] In this step, the main control unit 210 simultaneously receives the first surge detection signal and the third surge detection signal, indicating that a surge has occurred in the sewage tank and the surged liquid has entered the first cavity A. At this time, in order to prevent the surged liquid from entering the suction fan through the second vent 39, the suction fan is controlled to stop running to protect it.

[0127] Step S430: If the liquid full detection circuit 230 sends a liquid full detection signal to it, the suction fan will be controlled to stop running.

[0128] If the main control unit 210 detects a full liquid detection signal from the full liquid detection circuit 230, it indicates that the water level of the sewage in the second chamber B of the tank 31 has reached the maximum level. At this time, if the suction fan continues to operate, the sewage in the second chamber B could easily enter the first chamber A, and then enter the suction fan through the second vent 39. Therefore, in this step, to prevent water from entering the suction fan, the suction fan is stopped when the water level in the second chamber B is detected to have reached the maximum level.

[0129] Example 5:

[0130] Please refer to Figure 10 This is a schematic diagram of the third implementation of the surge detection component 36 when the sewage tank 3 is upright, provided in this application.

[0131] Please refer to Figure 11 This is a schematic diagram illustrating a third implementation of the surge detection component 36 for the sewage tank 3 when it lies flat, as provided in this application. Figure 10 and Figure 11 As shown, this embodiment is similar to Figure 8 and Figure 9 The difference in this embodiment is that the partition 311 is a partition 311 with a bent shape; the partition 311 divides the tank 31 into an L-shaped cavity B and a cavity A nested in the upper part of the L-shaped cavity B. In this embodiment, the surge detection assembly 36 also includes a second surge detection head 362 disposed on the first surge detection element 410, and the second surge detection head 362 is located in the second cavity B; the surge detection circuit 220 also includes a second surge detection circuit 222, and the second conductive surface 352 and the second surge detection head 362 are connected to the second surge detection circuit 222; the first surge detection circuit 221, the second surge detection circuit 222 and the third surge detection circuit 223 are all connected to different I / O ports of the main control unit 210; when the sewage tank is upright, the second surge detection head 362 is not lower than the second conductive surface 352. When the sewage tank is lying flat, the second surge detection head 362 is higher than the second conductive surface 352, and the second surge detection head 362 is not higher than the liquid full detection head 371. Specifically, in this embodiment, when the sewage tank is upright, the second surge detection head 362 is located 12mm above the highest water level mark and 20mm above the second conductive surface 352; when the sewage tank is lying flat, the second surge detection head 362 is located 3mm above the second conductive surface 352 and 15mm below the full liquid detection head 371.

[0132] During surge detection, if a surge occurs in the sewage in the second chamber of the sewage tank 3, it will connect the second conductive surface 352 and the second surge detection head 362. After the connection is established, the second conductive surface 352, the second surge detection head 362, and the second surge detection circuit 222 form a loop. After the loop is formed, the second surge detection circuit 222 sends a second surge detection signal to the main control unit 210. After receiving the second surge detection signal, the main control unit 210 can reduce the operating power of the suction fan 5. By reducing the operating power of the suction fan 5, the possibility of sewage entering the first chamber A is reduced, thereby reducing the possibility of sewage entering the suction fan 5.

[0133] In extreme cases, even if the sewage in the second chamber B enters the first chamber A, the first chamber can still detect the surge phenomenon in a timely manner. Upon detecting the surge phenomenon, it can promptly reduce the operating power of the suction fan 5, or control the suction fan 5 to stop operating, to prevent water from entering the suction fan. Specifically, when the surge detection assembly 36 only includes the first surge detection element 410, the surge phenomenon in the first chamber is detected by the first surge detection head 361; when the surge detection assembly 36 includes both the first surge detection element 410 and the second surge detection element 420, the surge phenomenon in the first chamber is detected by the first surge detection head 361 and the third surge detection head 421. The specific principle of detecting the surge phenomenon in the first chamber is detailed in Embodiment 4, and will not be repeated here.

[0134] In this embodiment, surge detection and liquid level detection can also be performed simultaneously. The specific detection principle is explained in detail below:

[0135] Step S510: The main control unit 210 monitors the signal transmission status of the first surge detection circuit 221, the second surge detection circuit 222, the third surge detection circuit 223, and the liquid full detection circuit 230.

[0136] In this step, the main control unit 210 detects the signal transmission status of the first surge detection circuit 221, the second surge detection circuit 222, the third surge detection circuit 223, and the liquid full detection circuit 230. If the second surge detection circuit 222 sends a second surge detection signal, step S520 is executed. If the first surge detection circuit 221 sends a first surge detection signal, no operation is performed. If the third surge detection circuit 223 sends a third surge detection signal, no operation is performed. If both the first surge detection circuit 221 and the third surge detection circuit 223 send a third surge detection signal, step S530 is executed. If the liquid full detection circuit 230 sends a liquid full detection signal, step S540 is executed.

[0137] Step S520: If the second surge detection circuit 222 sends a second surge detection signal to it, reduce the operating power of the suction fan.

[0138] In this step, if the main control unit 210 receives the second surge detection signal, it indicates that a surge has occurred in the sewage in the second cavity B. At this time, in order to prevent the surged liquid from entering the first cavity A, the operating power of the sewage suction fan is reduced.

[0139] Step S530: If the first surge detection circuit 221 sends a first surge detection signal to it, and at the same time, the third surge detection circuit 223 sends a third surge detection signal to it, the suction fan is controlled to stop running.

[0140] In this step, when the main control unit 210 receives both the first surge detection signal and the third surge detection signal, it indicates that the first cavity A has entered the sewage liquid and a surge has occurred in the sewage liquid within the first cavity. At this time, in order to prevent the sewage liquid from entering the sewage suction fan through the second vent 39, the sewage suction fan is controlled to stop running.

[0141] Step S540: If the liquid full detection circuit 230 sends a liquid full detection signal to it, the suction fan will be controlled to stop running.

[0142] If the main control unit 210 detects a full liquid detection signal from the full liquid detection circuit 230, it indicates that the water level of the sewage in the second chamber B of the tank 31 has reached the maximum level. At this time, if the suction fan continues to operate, the sewage in the second chamber B could easily enter the first chamber A, and then enter the suction fan through the second vent 39. Therefore, in this step, to prevent water from entering the suction fan, the suction fan is stopped when the water level in the second chamber B is detected to have reached the maximum level.

[0143] It is understandable that a fourth surge detection head can also be provided on the second surge detection element. The fourth surge detection head is located in the second cavity B. The surge detection circuit also includes a fourth surge detection circuit, which is connected to the second conductive surface and the fourth surge detection head. The first, second, third, and fourth surge detection circuits are all connected to different I / O ports of the main control unit. When the sewage tank is upright, the fourth surge detection head is not lower than the second conductive surface. When the sewage tank is lying flat, the fourth surge detection head is higher than the second conductive surface, and the second surge detection head is not higher than the full liquid detection head. The second and fourth surge detection heads are located at different heights. Specifically, in this embodiment, when the sewage tank is upright, the fourth surge detection head is located 12mm above the highest water level mark, and the second surge detection head is located 20mm above the second conductive surface; when the sewage tank is lying flat, the fourth surge detection head is located 6mm above the second conductive surface, and the second surge detection head is located 12mm below the full liquid detection head.

[0144] In this embodiment, surge detection can be performed simultaneously using both the second surge detection head and the fourth surge detection head within the second cavity. When a surge occurs, if the second conductive surface and the second surge detection head are connected by the surging liquid, the second surge detection circuit sends a second surge detection signal to the main control unit. If the second conductive surface and the fourth surge detection head are connected by the surging liquid, the second conductive surface, the fourth surge detection head, and the fourth surge detection circuit form a loop. After this loop is formed, the fourth surge detection circuit sends a fourth surge detection signal to the main control unit. On one hand, if the main control unit only receives either the second or fourth surge detection signal, it can perform no processing, as this may be a misidentification caused by a few drops of liquid splashing onto the conductive surface and the detection head. On the other hand, if the main control unit receives both the second and fourth surge detection signals simultaneously, it can determine that a surge has occurred, and the operating status of the suction fan can be adjusted accordingly.

[0145] It is worth noting that multiple sets of conductor components, surge detection components, and liquid full detection components can be provided, and each set can be arranged inside the tank as described in the above embodiments. For example, two sets of conductor components, surge detection components, and liquid full detection components can be provided, symmetrically arranged inside the sewage tank, and each set is arranged inside the sewage tank as described in the above embodiments.

Claims

1. A control method for a cleaning device, applied to the cleaning device, the cleaning device comprising a control system, a floor brush, a body, and a suction system, the suction system comprising a wastewater tank and a suction fan for sucking wastewater and / or dirt into the wastewater tank, characterized in that, The control system includes a main control unit and a surge detection circuit connected to the main control unit. The sewage tank is provided with a conductor assembly and a surge detection assembly connected to the surge detection circuit. The control method for the cleaning equipment includes: The main control unit determines whether it receives a surge detection signal sent by the surge detection circuit; If the surge detection signal is received, the working status of the suction fan is adjusted. When a surge occurs in the liquid inside the sewage tank, the conductor assembly and the surge detection assembly are connected by the surging liquid, and the conductor assembly, the surge detection assembly, and the surge detection circuit form a first loop. The surge detection circuit sends the surge detection signal to the main control unit. The control system further includes a liquid full detection circuit connected to the main control unit, the conductor assembly is connected to the liquid full detection circuit, and the wastewater tank is provided with a liquid full detection component connected to the liquid full detection circuit; the control method of the cleaning equipment further includes: The main control unit determines whether it receives a liquid full detection signal sent by the liquid full detection circuit; If the full liquid detection signal is received, the suction fan will be controlled to stop working; When the liquid in the sewage tank reaches the maximum water level, the conductor assembly and the liquid full detection assembly are connected by the liquid in the sewage tank. The conductor assembly, the liquid full detection assembly, and the liquid full detection circuit form a second loop. The liquid full detection circuit sends the liquid full detection signal to the main control unit.

2. The control method for the cleaning equipment according to claim 1, characterized in that, Regulating the operating status of the suction fan includes: Reduce the operating power of the suction fan; Alternatively, the suction fan can be stopped.

3. The control method for the cleaning equipment according to claim 1, characterized in that, Regulating the operating status of the suction fan includes: The main control unit receives the surge detection signal and determines whether the operating time of the cleaning equipment exceeds a preset time threshold. If the operating time of the cleaning equipment exceeds the preset time threshold, the suction fan will be controlled to stop operating. If the operating time of the cleaning equipment does not exceed the preset time threshold, the operating power of the suction fan is reduced.

4. The control method for the cleaning equipment according to claim 1, characterized in that, The sewage tank is equipped with a maximum water level indicator; the conductor assembly is equipped with a first conductive surface connected to the surge detection circuit, and the surge detection assembly is equipped with a first surge detection head connected to the surge detection circuit; when the sewage tank is upright, the first conductive surface is not higher than the maximum water level indicator, and the first surge detection head is not lower than the first conductive surface; When a surge occurs in the liquid inside the sewage tank, the first conductive surface and the first surge detection head are connected by the surging liquid.

5. The control method for the cleaning equipment according to claim 1, characterized in that, The conductor assembly is provided with a first conductive surface connected to the liquid full detection circuit, and the liquid full detection assembly is provided with a liquid full detection head connected to the liquid full detection circuit; the sewage tank is provided with a maximum water level mark; when the sewage tank is upright, the liquid full detection head is not higher than the maximum water level mark and not lower than the first conductive surface; When the machine body is tilted and the liquid in the sewage tank reaches the level corresponding to the highest water level indicator, the first conductive surface and the liquid full detection head are connected by the liquid in the sewage tank.

6. The control method for the cleaning equipment according to claim 1, characterized in that, The conductor assembly is provided with a first conductive surface connected to the liquid full detection circuit, and the liquid full detection assembly is provided with a liquid full detection head connected to the liquid full detection circuit; when the sewage tank is lying flat, the first conductive surface is located below the liquid full detection head; When the machine body is in a flat position and the liquid in the sewage tank reaches the water level corresponding to the liquid full detection head, the first conductive surface and the liquid full detection head are connected by the liquid in the sewage tank.

7. The control method for the cleaning equipment according to claim 1, characterized in that, The conductor assembly is provided with a first conductive surface connected to the surge detection circuit, and the surge detection assembly is provided with a first surge detection head connected to the surge detection circuit; the liquid full detection assembly is provided with a liquid full detection head connected to the liquid full detection circuit; when the sewage tank is lying flat, the first surge detection head is not higher than the liquid full detection head, and the first surge detection head is higher than the first conductive surface; When the sewage tank is lying flat, it has a central axis surface that divides the sewage tank into upper and lower parts, and the liquid full detection head is located on the central axis surface, or the liquid full detection head is located below the central axis surface.

8. The control method for the cleaning equipment according to claim 1, characterized in that, The conductor assembly has a first conductive surface connected to the surge detection circuit, and a second conductive surface connected to the liquid full detection circuit. The surge detection assembly has a first surge detection head connected to the surge detection circuit. The liquid full detection assembly has a liquid full detection head connected to the liquid full detection circuit. The sewage tank includes a first cavity and a second cavity located below the first cavity. The first conductive surface and the first surge detection head are located in the first cavity, and the second conductive surface and the liquid full detection head are located in the second cavity. When the liquid in the sewage tank reaches the maximum water level, the second conductive surface and the liquid full detection head are connected by the liquid in the second cavity; when a surge occurs in the liquid in the sewage tank, the first conductive surface and the first surge detection head are connected by the surging liquid.

9. The control method for the cleaning equipment according to claim 8, characterized in that, The surge detection assembly is further provided with a second surge detection head connected to the surge detection circuit, and the second surge detection head is located in the second cavity; When a surge occurs in the liquid inside the sewage tank, the second conductive surface and the second surge detection head are connected by the surging liquid.

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