Control method of surface cleaning device

Abstract

The invention discloses a control method of a surface cleaning device, the surface cleaning device comprises a main body connected with a holding part, a ground brush, a liquid supply system, a dirt collection system, a control system and a detection system, the ground brush is provided with a cleaning roller and a supporting wheel, and a water supply tank of the liquid supply system is arranged on the main body or the ground brush; cleaning liquid is provided for the cleaning roller or the surface to be cleaned through the water pump; the dirt collecting system comprises a dirt collecting box and a dirt suction motor, the dirt collecting box is used for collecting dirt liquid, the detecting system is used for detecting motion parameters of the surface cleaning device, and the control system controls the operation mode of the surface cleaning device according to the motion parameters obtained by the detecting system. When the surface cleaning device moves forwards, the surface cleaning device is controlled to operate in a first cleaning mode, and when it is detected that the number of backward movement times or the backward movement distance of the surface cleaning device meets a preset condition, the surface cleaning device enters a second cleaning mode; wherein the second cleaning mode at least comprises a liquid supply stage in which the liquid supply amount of the water pump is smaller than that of the water pump in the first cleaning mode.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and more specifically to a control method for a surface cleaning device. Background Technology

[0002] With the advancement of technology and the improvement of people's living standards, surface cleaning devices, especially floor scrubbers, have become indispensable tools in modern cleaning work. Traditional cleaning methods, such as manual mopping or using simple cleaning tools, are not only inefficient but also often fail to achieve the desired cleaning results. Therefore, automated and intelligent surface cleaning devices have emerged to meet the market's demand for efficient and convenient cleaning methods.

[0003] However, existing surface cleaning devices still have some problems in use. For example, to improve the cleaning effect, users sometimes repeatedly push and pull the device to clean the surface. During the cleaning process, continuous liquid supply may cause excessive water stains on the surface, which not only affects the cleaning effect but may also damage the floor material. In addition, traditional surface cleaning devices usually only have a single cleaning mode and cannot be flexibly adjusted according to the user's operation and the degree of dirt, thus limiting their cleaning efficiency and scope of application.

[0004] Therefore, how to enable surface cleaning devices to adaptively adjust their working modes according to cleaning needs and environmental conditions in order to improve cleaning efficiency and reduce water stains on the ground has become an urgent problem to be solved in the field of surface cleaning technology. Summary of the Invention

[0005] This application provides a control method for a surface cleaning device to solve at least one of the above-mentioned technical problems.

[0006] The technical solution adopted in this application is as follows:

[0007] A control method for a surface cleaning device, the surface cleaning device comprising a main body connected to a grip, a floor brush, a liquid supply system, a dirt collection system, a control system, and a detection system, wherein the floor brush is equipped with a cleaning roller and a support wheel, the liquid supply system has a water tank located on the main body or the floor brush to supply cleaning liquid to the cleaning roller or the surface to be cleaned via a water pump; the dirt collection system includes a dirt collection tank and a dirt suction motor, the dirt collection tank is used to collect dirt, the detection system is used to detect the motion parameters of the surface cleaning device, and the control system controls the operating mode of the surface cleaning device according to the motion parameters obtained by the detection system; when the surface cleaning device moves forward, it is controlled to operate in a first cleaning mode; when the number of backward movements or the backward movement distance of the surface cleaning device meets a preset condition, it enters a second cleaning mode; wherein the second cleaning mode includes at least a liquid supply stage in which the water pump supply volume is less than the water pump supply volume in the first cleaning mode.

[0008] In one possible implementation of this application, in the first cleaning mode, the surface cleaning device always moves forward and the liquid supply flow rate is Q1. In the second cleaning mode, the surface cleaning device reciprocates. When it is detected that the surface cleaning device has completed one backward movement and then moves forward again, the liquid supply flow rate of the surface cleaning device is controlled to be Q2, wherein Q2 is less than Q1.

[0009] In one possible implementation of this application, in the first cleaning mode, the surface cleaning device always moves forward and the liquid supply flow rate is Q1. In the second cleaning mode, after the surface cleaning device completes at least one reciprocating motion, the surface cleaning device is controlled to operate at a liquid supply flow rate Q2, where Q2 is less than Q1.

[0010] In one possible implementation of this application, in the first cleaning mode, the surface cleaning device always moves forward and continuously supplies liquid at a liquid supply flow rate Q1, while in the second cleaning mode, the surface cleaning device moves back and forth, and the liquid supply system is controlled to supply liquid intermittently at a liquid supply flow rate Q1.

[0011] In one possible implementation of this application, the second cleaning mode includes at least a suction stage in which the suction motor power is greater than the suction power of the first cleaning mode.

[0012] In one possible implementation of this application, in the first cleaning mode, the surface cleaning device always moves forward and the suction motor power is W1. In the second cleaning mode, the surface cleaning device reciprocates. When it is detected that the surface cleaning device has completed one pullback and moves forward again, the suction motor power of the surface cleaning device is controlled to be W2, where W2 is greater than or equal to W1.

[0013] In one possible implementation of this application, after the surface cleaning device completes one backward movement, the forward movement time exceeds a preset time, and the surface cleaning device is controlled to switch from the second cleaning mode to the first cleaning mode.

[0014] In one possible implementation of this application, the floor brush further includes a scraper bar that is interference-fitted with the cleaning roller. The surface cleaning device operates in a first cleaning mode, controlling the interference between the scraper bar and the cleaning roller to be D1. The surface cleaning device operates in a second cleaning mode, controlling the interference between the scraper bar and the cleaning roller to be D2, wherein D2 is greater than D1.

[0015] In one possible implementation of this application, the surface cleaning device further includes a third cleaning mode. When the backward movement distance of the surface cleaning device does not meet a preset condition or the time interval between the pull-back and the forward push is less than a preset value, the surface cleaning device is controlled to enter the third cleaning mode. In the third cleaning mode, the support wheel is controlled to rotate in the opposite direction to the cleaning roller.

[0016] In one possible implementation of this application, the liquid supply flow rate of the third cleaning mode is Q3, and Q3 is greater than Q1.

[0017] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0018] 1. By controlling the operation mode of the surface cleaning device based on motion parameters acquired by the detection system, it can more accurately adapt to different cleaning needs. Specifically, when the number of backward movements / distance of the surface cleaning device meets preset conditions, it is inferred that the user is using the device to reciprocate and pull, cleaning a specific area of ​​the surface to be cleaned. To avoid excessive water stains in the cleaning area during the reciprocating wiping process, a second cleaning mode is initiated when the conditions are met. Compared to the first cleaning mode, which involves continuous forward movement, the second cleaning mode has a smaller liquid supply phase, reducing the amount of liquid supplied and minimizing water stains and waste of cleaning solution while ensuring sufficient wetting of the surface.

[0019] 2. In the second cleaning mode, the user pulls the surface cleaning device back and forth to repeatedly mop the floor brush on a specific area. Compared to the first cleaning mode, which moves forward continuously, the second cleaning mode includes a forward movement phase and a backward movement phase. The liquid supply flow rate of the surface cleaning device is adjusted so that when the device completes one backward movement and then moves forward again, the liquid supply flow rate is reduced during the forward movement. Alternatively, the liquid supply flow rate is reduced after the surface cleaning device has completed at least one reciprocating movement. Alternatively, the liquid supply module can supply liquid intermittently in the second cleaning mode. This ensures that the dirt in the area is fully dissolved by the cleaning liquid, keeping the cleaning roller moist, while also reducing water residue on the floor and preventing secondary pollution from residual water.

[0020] 3. In the second cleaning mode, in order to better clean stubborn stains on the surface to be cleaned, reduce water stains on the ground, increase the power of the vacuum motor, and make the vacuum motor more suitable for the reciprocating push-pull operation mode of the surface cleaning device.

[0021] 4. Monitor the motion parameters of the surface cleaning device. If the backward movement distance of the surface cleaning device does not meet the preset conditions or the time interval between pushing forward and pulling back is less than the preset value, the surface cleaning device may be performing spot cleaning on stubborn stains. Stubborn stains requiring spot cleaning typically have a strong adhesion to the surface and are difficult to dissolve or separate. To better clean such stains, the user usually needs to overcome the forward traction generated during the rotation of the cleaning roller, pulling the surface cleaning device to keep it as stationary as possible, utilizing the rotation of the cleaning roller to continuously clean stubborn stains located in a fixed position for an extended period. To reduce the user's hand strain and keep the surface cleaning device as stationary as possible, in the third cleaning mode, the support wheel is controlled to rotate in the opposite direction to the cleaning roller. To improve the cleaning ability for stubborn stains, the liquid supply flow rate in the third cleaning mode is increased.

[0022] 5. To further reduce water residue on the floor, a movable squeegee is installed on the surface cleaning device. When the surface cleaning device is in the second cleaning mode, the interference fit between the squeegee and the cleaning roller is increased. This enhances the squeegee's scraping ability against the cleaning roller and reduces the water content of the cleaning roller. The reduced water content of the cleaning roller after at least one wet mopping of the surface allows it to absorb as much liquid and dirt as possible from the surface, further absorbing water stains on the floor. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0024] Figure 1 A surface cleaning device provided in the embodiments of this application;

[0025] Figure 2 A flowchart illustrating a control method for a surface cleaning device provided in this application embodiment;

[0026] Figure 3 A flowchart illustrating the change in liquid supply flow rate in the first second cleaning mode provided in this application embodiment;

[0027] Figure 4 A flowchart illustrating the change in liquid supply flow rate in the second cleaning mode provided in this application embodiment;

[0028] Figure 5 A flowchart illustrating the change in liquid supply flow rate in the third second cleaning mode provided in this application embodiment;

[0029] Figure 6 A schematic diagram of the interference fit structure between the scraper and the cleaning roller in a second cleaning mode provided in an embodiment of this application;

[0030] Figure 7 This is a schematic diagram of the interference fit structure between the scraper and the cleaning roller in a first cleaning mode provided in an embodiment of this application. Detailed Implementation

[0031] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0033] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "a particular embodiment," "example," or "specific example," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0036] The control method of the surface cleaning device in this application is described below with reference to the accompanying drawings.

[0037] The surface cleaning device proposed in this application, such as Figure 1 As shown, the device includes a main body 20 connected to a gripping part 201, a floor brush 10, a liquid supply system 30, a dirt collection system 40, a control system (not shown in the figure), and a detection system (not shown in the figure). The floor brush 10 is equipped with a cleaning roller (not shown in the figure) and a support wheel 13. The water supply tank 31 of the liquid supply system 30 is located on the main body 20 or the floor brush 10 to provide cleaning liquid to the cleaning roller (not shown in the figure) or the surface to be cleaned via a water pump (not shown in the figure). The dirt collection system 40 includes a dirt collection tank 41 and a dirt suction motor 42. The dirt collection tank 41 is used to collect dirt liquid, and the detection system (not shown in the figure) is used to detect the motion parameters of the surface cleaning device.

[0038] Figure 2 A flowchart illustrating a control method for a surface cleaning device provided in this application embodiment is shown below. Figure 2 As shown, the control method execution flow of the surface cleaning device provided in this application is as follows:

[0039] Step 2010: The detection system detects the motion parameters of the surface cleaning device;

[0040] Step 2021: When the control system detects that the surface cleaning device is continuously moving forward, it controls the surface cleaning device to enter the first cleaning mode; or,

[0041] Step 2022: When the number of backward movements or the backward movement distance of the surface cleaning device meet the preset conditions, the second cleaning mode is entered.

[0042] In this embodiment of the invention, the control system controls the operating mode of the surface cleaning device based on the motion parameters acquired by the detection system. This control method enables the surface cleaning device to adjust its operating mode according to different motion conditions, thereby improving cleaning effectiveness and efficiency.

[0043] Understandably, the single mode of existing surface cleaning devices often cannot adapt to different cleaning needs and scenarios, resulting in poor cleaning effects or waste of resources. For example, when cleaning forward, liquid needs to be supplied to ensure that the cleaning roller effectively wets and removes dirt from the surface to be cleaned. However, when pulling back or repeatedly cleaning the same area, if the same amount of liquid is maintained, it may lead to excessive cleaning liquid, which not only wastes cleaning resources but may also affect the cleaning effect due to liquid residue.

[0044] This application effectively solves the aforementioned problems by introducing a detection system to monitor the movement status of the surface cleaning device in real time and dynamically adjusting the operating mode based on these movement parameters. When the surface cleaning device moves forward, the control system sets it to the first cleaning mode, in which the water pump supply is moderate, ensuring cleaning effectiveness without wasting resources.

[0045] Furthermore, when the detection system detects that the number of backward movements or the distance covered by the surface cleaning device meet certain conditions, the control system automatically switches to the second cleaning mode. In the second cleaning mode, the water pump's supply volume is reduced accordingly. This design takes into account that when the surface to be cleaned has already been covered with liquid once or multiple times during the pull-back or repeated cleaning of the same area, reducing the supply volume can both prevent excessive cleaning liquid and ensure cleaning effectiveness. At the same time, this dynamically adjusted working mode also makes the surface cleaning device more intelligent and efficient, capable of adaptively adjusting according to different cleaning needs and scenarios, thereby greatly improving cleaning efficiency and effectiveness.

[0046] Those skilled in the art will understand that the detection system can be one or more combinations of a motion direction detection system, a speed detection system, and a distance detection system. For example, the detection system can be an encoder disk mounted on a support wheel and rotating with the support wheel. The motion direction and / or speed of the surface cleaning device can be calculated based on the detected signals and frequencies.

[0047] In one implementation of this embodiment, the surface cleaning device enters a second cleaning mode when the number of backward movements detected meets a preset condition. The number of backward movements can be set to any number, such as 1, 2, 3, 4, etc. If the control system detects that the surface cleaning device has moved backward once and controls it to enter the second cleaning mode, the detection system determines the direction of movement of the surface cleaning device by receiving signals sent by the encoder disk. Once the system detects that the surface cleaning device has completed one backward movement, it controls it to enter the second cleaning mode. Similarly, the control system can also be set to control the surface cleaning device to enter the second cleaning mode only after detecting any number of backward movements, such as 2, 3, 4, etc.

[0048] In another implementation of this embodiment, when the detected backward movement distance of the surface cleaning device meets a preset condition, a second cleaning mode is entered. The distance can be set to any length such as 30cm, 50cm, 70cm, or 1m. For example, in this embodiment, the detection system includes a distance detection system and a direction detection system. When the backward movement of the surface cleaning device is detected, the backward movement distance of the surface cleaning device is calculated. When the backward movement distance of the surface cleaning device reaches a preset value, the surface cleaning device is controlled to enter the second cleaning mode.

[0049] Example 1:

[0050] In one possible implementation of this application, in the first cleaning mode, the surface cleaning device always moves forward and the liquid supply flow rate is Q1. In the second cleaning mode, the liquid supply flow rate changes during the forward movement of the surface cleaning device. In the second cleaning mode, the surface cleaning device reciprocates. When it is detected that the surface cleaning device has completed one backward movement and then moves forward again, the liquid supply flow rate of the surface cleaning device is controlled to Q2, where Q2 is less than Q1.

[0051] In one embodiment, the control system determines the motion state of the surface cleaning device based on data from the detection system and adjusts the liquid supply flow rate accordingly. When the surface cleaning device is always moving forward, the control system sets it to a first cleaning mode. In this mode, the liquid supply flow rate of the liquid supply system is set to Q1. Q1 is a relatively large flow rate designed to ensure that the cleaning roller is sufficiently wetted, thereby effectively removing stains from the surface to be cleaned. When the control system enters a second cleaning mode, the second cleaning mode includes two motion directions: forward and backward. In this embodiment, the liquid supply flow rate changes in the second cleaning mode as follows: Figure 3 As shown in the diagram, when the detection system detects that the surface cleaning device starts to move backward and then moves forward again after completing one backward movement, the liquid supply flow rate is adjusted to Q2, which is less than Q1 in the first cleaning mode. This is because in the second cleaning mode, when the surface cleaning device reciprocates to clean the surface, and completes one backward movement before moving forward again, the area traversed by the forward movement has already been wiped at least once during the backward movement, and the corresponding surface to be cleaned is not dry. To avoid excessive water stains on the surface to be cleaned, the liquid supply flow rate is lower than Q1 in the first cleaning mode, which involves continuous forward cleaning, during the surface cleaning device's subsequent forward movement.

[0052] Those skilled in the art will understand that the liquid supply flow rate Q2 during the forward movement of the surface cleaning device in the second cleaning mode can be a fixed value or a value that varies within a certain range.

[0053] As another implementation of this embodiment, the second cleaning mode includes two phases with different directions of movement: forward movement and backward movement, which can have different liquid supply flow rates. Since the forward movement is usually a re-wiping of areas already wiped during the backward movement, the liquid supply flow rate during the forward movement can be less than that during the backward movement. This ensures that the overall liquid supply flow rate meets the requirements of the cleaning roller's moisture content and the dissolution of dirt on the surface to be cleaned, while also reducing water stains on the ground. In this embodiment, the forward movement of the second cleaning mode can maintain the same liquid supply flow rate Q1 as the first cleaning mode, while a smaller liquid supply flow rate Q2 can be used during the backward movement. Alternatively, in another embodiment, the forward movement of the second cleaning mode can maintain a liquid supply flow rate Q4 slightly less than that of the first cleaning mode, while using a liquid supply flow rate Q2 during the backward movement. Where Q1 > Q4 > Q2.

[0054] Taking specific values ​​as an example, suppose a user is cleaning a floor with a surface cleaning device. First, the device moves forward, entering the first cleaning mode with a liquid flow rate of Q1, set to 80 ml / min. This flow rate ensures the cleaning roller remains moist during forward movement, improving cleaning effectiveness. Those skilled in the art will know that the liquid flow rate Q1 in the first cleaning mode can also be any reasonable value such as 60 ml / min, 70 ml / min, 90 ml / min, or 100 ml / min. When the detection system detects that the device meets the conditions to switch to the second cleaning mode, in the second cleaning mode, after completing one backward movement and then moving forward again, the liquid flow rate is adjusted to Q2. For example, Q2 is set to 40 ml / min. Those skilled in the art will know that the liquid flow rate Q2 in the second cleaning mode can also be any reasonable value such as 20 ml / min, 30 ml / min, or 50 ml / min. This flow rate adjustment is based on the fact that the surface to be cleaned has already been covered with liquid during the reciprocating motion, therefore a larger liquid supply than during the initial cleaning is not required.

[0055] Example 2:

[0056] In one possible implementation of this application, in the first cleaning mode, the surface cleaning device always moves forward and the liquid supply flow rate is Q1. In the second cleaning mode, after the surface cleaning device completes at least one reciprocating motion, the surface cleaning device is controlled to operate at a liquid supply flow rate Q2, where Q2 is less than Q1.

[0057] In one embodiment, the adjustment strategy for the motion mode and liquid supply flow rate of the surface cleaning device differs slightly from that in Embodiment 1. In this embodiment, the liquid supply flow rate changes in the second cleaning mode, such as... Figure 4As shown, when the surface cleaning device is constantly moving forward, the control system sets it to the first cleaning mode. In this mode, the liquid supply flow rate is set to Q1. When the detection system detects that the surface cleaning device has completed at least one reciprocating motion, the control system switches to the second cleaning mode. In the second cleaning mode, the liquid supply flow rate is adjusted to Q2, and the value of Q2 is less than Q1 in the first cleaning mode.

[0058] For a specific example, suppose a user is using a surface cleaning device to clean a floor. First, the device will move forward for initial cleaning, operating at a liquid flow rate of Q1. During the cleaning process, when the detection system detects that the surface cleaning device is reciprocating in the area, if the device detects that at least one reciprocating motion has been completed, it automatically switches to a second cleaning mode and adjusts the liquid flow rate to Q2 to accommodate the area that has already undergone initial cleaning.

[0059] Those skilled in the art will understand that the fluid supply flow rate Q1 in the first cleaning mode can also be any reasonable value such as 60 ml / min, 70 ml / min, 90 ml / min, or 100 ml / min. Similarly, the fluid supply flow rate Q2 in the second cleaning mode can also be any reasonable value such as 20 ml / min, 30 ml / min, or 50 ml / min.

[0060] The cleaning strategies in both embodiments described above effectively conserve cleaning fluid and reduce operating costs by minimizing the amount of fluid supplied during the reciprocating cleaning process. Furthermore, an appropriate fluid supply ensures that the cleaning roller is neither too dry nor too wet during reciprocating cleaning, thus maintaining optimal cleaning results. Moreover, by automatically detecting the motion status and adjusting the fluid flow rate, the cleaning process becomes more intelligent and convenient, reducing the user's operational burden.

[0061] Example 3:

[0062] In one possible implementation of this application, in the first cleaning mode, the surface cleaning device always moves forward and continuously supplies liquid at a liquid supply flow rate Q1, while in the second cleaning mode, the surface cleaning device moves back and forth, and the liquid supply system is controlled to supply liquid intermittently at a liquid supply flow rate Q1.

[0063] In one embodiment, the motion mode and liquid supply flow adjustment strategy of the surface cleaning device differ slightly from those of Embodiments 1 and 2. In this embodiment, the surface cleaning device has two different operating modes, each with its specific motion and liquid supply strategies. In this embodiment, the liquid supply flow rate changes in the second cleaning mode, such as... Figure 5As shown. In the first cleaning mode, the surface cleaning device moves forward continuously without reciprocating or reversing. The liquid supply system continuously supplies cleaning fluid to the cleaning device at a constant flow rate Q1. This means that throughout the forward movement, the cleaning fluid is continuously delivered to the cleaning head or the surface to be cleaned, ensuring a continuous and uniform cleaning effect. When the surface cleaning device switches to the second cleaning mode, it reciprocates, moving forward a certain distance and then reversing, then moving forward again, in a cycle. In this mode, the liquid supply system no longer supplies fluid continuously, but intermittently at a flow rate Q1. This means that during certain phases of the reciprocating movement (such as the forward phase), the liquid supply system supplies cleaning fluid, while during other phases (such as the reversing phase), the supply stops. Alternatively, in this latter case, the liquid supply system intermittently supplies fluid at fixed time intervals; for example, in the second cleaning mode, the liquid supply unit supplies fluid for 20 seconds every 5 minutes of operation of the surface cleaning device.

[0064] For a specific example, suppose a user is cleaning a floor with a surface cleaning device. First, the device moves forward, entering the first cleaning mode with a liquid flow rate of Q1. If Q1 is set to 500 ml per minute, the liquid supply system will maintain this constant flow rate regardless of the device's speed. When the detection system detects the surface cleaning device reciprocating in the area, the control system switches to the second cleaning mode. In this mode, the device begins reciprocating, supplying liquid with each forward movement to more effectively target stains. Liquid supply stops during the retraction phase, preventing waste and allowing the floor sufficient time to absorb the supplied liquid.

[0065] It should be noted that the reciprocating motion in this embodiment is triggered when the surface cleaning device completes one backward motion and then moves forward again, or when the detection system detects that the surface cleaning device has completed at least one reciprocating motion.

[0066] The cleaning strategy in this embodiment combines continuous and intermittent liquid supply to more effectively clean different types of stains, improving overall cleaning efficiency. Furthermore, the intermittent supply method during reciprocating motion avoids wasting cleaning fluid when not needed, thus saving resources. Users can flexibly choose the supply mode according to different cleaning needs, making the cleaning process more convenient and efficient. Additionally, reducing cleaning fluid waste also helps lower operating costs and improve user satisfaction.

[0067] The surface cleaning device proposed in this application monitors motion parameters through a detection system to dynamically adjust the operating mode, including not only reducing the liquid supply when entering the second cleaning mode, but also at least a suction phase in which the suction motor power is greater than the suction power of the first cleaning mode.

[0068] It's important to note that the working principle of a vacuum motor is primarily based on negative pressure generation and waste suction. When the motor starts, it drives the internal impeller to rotate at high speed, generating a powerful negative pressure. This negative pressure draws waste from the floor or other surfaces into the machine through the suction inlet. Subsequently, the waste is filtered and separated, ultimately collected in a specific container, while the cleaned air is discharged through the outlet.

[0069] In one embodiment, during the high-power suction phase of the second cleaning mode, the suction motor power is significantly greater than that of the first cleaning mode. This increased suction power is primarily to meet the cleaning demands of the second cleaning mode and reduce water stains on the floor. By increasing the power of the suction motor, a stronger negative pressure can be generated, thereby more effectively removing dirt and water stains.

[0070] Example 4:

[0071] In one possible implementation of this application, in the first cleaning mode, the surface cleaning device always moves forward and the power of the suction motor is W1. In the second cleaning mode, the surface cleaning device reciprocates. When it is detected that the surface cleaning device has completed one pullback and moves forward again, the power of the suction motor of the surface cleaning device is controlled to be W2, where W2 is greater than or equal to W1.

[0072] In one embodiment, the movement and suction power adjustment strategy of the surface cleaning device is similar to the liquid flow rate adjustment strategy in embodiments one, two, and three, but the focus is on adjusting the suction motor power. Specifically, when the surface cleaning device is in the first cleaning mode, it always moves forward, and the suction motor power is set to W1. W1 is a relatively moderate power designed to ensure effective removal of dirt and liquid during normal forward cleaning. When the detection system detects that the surface cleaning device has completed a pullback and is moving forward again, this means that the device has entered the second cleaning mode. In this mode, in order to more effectively deal with any remaining water stains and dirt, the control system automatically adjusts the suction motor power to W2, where W2 is greater than or equal to W1.

[0073] Taking specific values ​​as an example, suppose that in the first cleaning mode, the power W1 of the suction motor is set to 180W. Those skilled in the art will understand that the suction motor power W1 can be any reasonable value such as 95W, 120W, 150W, or 170W. When the surface cleaning device reciprocates and moves forward again after completing one pullback, the control system will adjust the suction motor power W2 to 250 watts (if W2 is greater than W1) or keep it unchanged at 180 watts (if W2 is equal to W1). Those skilled in the art will understand that the suction motor power W2 can be any reasonable value such as 100W, 130W, 200W, or 270W. Such power adjustment ensures that the device has stronger suction to deal with any stubborn stains and residual water during the reciprocating cleaning process.

[0074] The aforementioned power adjustment cleaning strategy allows the surface cleaning device to remove dirt and water stains from the floor more quickly and effectively in the second cleaning mode, thereby improving cleaning efficiency. Secondly, dynamically adjusting the power of the vacuum motor allows the device to adapt to different motion patterns and cleaning needs. Increasing power during reciprocating cleaning helps handle stubborn stains and reduces water accumulation on the floor. Furthermore, although the vacuum motor power increases in the second cleaning mode, this increase is based on actual needs, avoiding unnecessary energy waste. Simultaneously, by cleaning more effectively, the number of repetitive cleaning cycles is reduced, indirectly saving energy and water resources.

[0075] It is understood that this application may also have another possible implementation, in which the surface cleaning device always moves forward in the first cleaning mode and the power of the suction motor is W1, and the surface cleaning device reciprocates in the second cleaning mode. When it is detected that the surface cleaning device has completed at least one reciprocating motion, the power of the suction motor of the surface cleaning device is controlled to be W2, where W2 is greater than or equal to W1.

[0076] The surface cleaning device proposed in this application resumes normal cleaning mode after monitoring motion parameters through a detection system to determine that the entire machine has been running forward for a period of time.

[0077] In one possible implementation of this application, after the surface cleaning device completes one backward movement, the forward movement time exceeds a preset time, and the surface cleaning device is controlled to switch from the second cleaning mode to the first cleaning mode.

[0078] In one embodiment, this preset time can be a fixed value, such as 30 seconds or 1 minute, or it can be a value that is dynamically adjusted according to actual cleaning needs and scenarios. After the surface cleaning device has been cleaning in the second cleaning mode for a period of time, if the detection system detects that the device has been moving forward continuously for longer than this preset time, the control system will determine that the device may have entered a new cleaning area or needs to be cleaned more thoroughly. Therefore, it is necessary to switch the cleaning mode back to the first cleaning mode to ensure cleaning effect and efficiency.

[0079] For example, suppose a user is using a surface cleaning device to clean a large room. Initially, the device is in the first cleaning mode, cleaning with a large liquid supply and moderate suction power. When the user pulls the device backward to clean previously uncovered areas, the device automatically switches to the second cleaning mode to reduce the liquid supply and / or increase the suction power to handle the need for repeated cleaning. However, when the user pushes the device forward again and continues to move forward for more than a preset time (e.g., 1 minute), the control system determines that the user may have entered another part of the room or that a more thorough cleaning of that area is needed. Therefore, the control system automatically switches the device back to the first cleaning mode to ensure that the device works with optimal cleaning effect and efficiency in new cleaning areas or areas requiring deeper cleaning.

[0080] The surface cleaning device proposed in this application also includes control of the floor brush in different cleaning modes, so as to further realize the control of the liquid supply flow according to the cleaning mode, thereby further supporting the reduction of water stains.

[0081] Example 5:

[0082] In one possible implementation of this application, such as Figure 6 As shown, the floor brush 10 also includes a scraper 12 that is interference-fitted with the cleaning roller 11. The surface cleaning device operates in a first cleaning mode, controlling the interference between the scraper 12 and the cleaning roller 11 to be D1. The surface cleaning device also operates in a second cleaning mode, controlling the interference between the scraper 12 and the cleaning roller to be D2, where D2 is greater than D1. The interference between the scraper 12 and the cleaning roller 11 in the second cleaning mode is as follows: Figure 6 As shown; the interference fit between the scraper 12 and the cleaning roller 11 in the first cleaning mode is as follows: Figure 7 As shown.

[0083] In one embodiment, the amount of interference between the scraper and the cleaning roller is adjusted to control water residue during the cleaning process. This design allows the surface cleaning device to more effectively handle water stains and improve cleaning results in different cleaning modes. The floor brush, as one of the key components of the surface cleaning device, is responsible for directly contacting the surface to be cleaned to remove stains. Those skilled in the art will understand that the scraper 12 described in this application can be a combination of one or more of the following: a straight scraper, a serrated comb-shaped scraper, or an arc-shaped scraper.

[0084] In this embodiment, the floor brush is designed with a scraper blade that is interference-fitted with the cleaning roller to scrape away excess cleaning liquid and dirt as the cleaning roller rotates. When the surface cleaning device operates in the first cleaning mode, the control system controls the interference between the scraper blade and the cleaning roller to D1. D1 is a relatively small interference, designed to ensure that the scraper blade can effectively scrape away excess liquid and dirt on the cleaning roller as cleaning progresses, without affecting the normal rotation of the cleaning roller due to excessive interference. When the surface cleaning device switches to the second cleaning mode, the control system adjusts the interference between the scraper blade and the cleaning roller to D2. D2 is greater than D1, meaning that the interference between the scraper blade and the cleaning roller increases in the second cleaning mode. This design is to accommodate situations where the surface to be cleaned already has a certain amount of liquid covering it during the reciprocating cleaning process. By increasing the interference, the scraper blade can more thoroughly scrape away excess liquid remaining on the cleaning roller, thereby reducing water stains on the floor.

[0085] For example, suppose a user is using a surface cleaning device to clean a kitchen floor. Initially, the device is pushed forward for a preliminary clean. At this point, the device is in the first cleaning mode, and the interference fit between the squeegee and the cleaning roller is set to D1 (e.g., 0.5 mm). In this mode, the squeegee effectively removes excess liquid and dirt from the cleaning roller, ensuring an even clean of the floor. However, during the cleaning process, the user may find some stubborn stains requiring repeated cleaning. When the surface cleaning device detects that a backward movement has been completed and moves forward again, it automatically switches to the second cleaning mode. In the second cleaning mode, the interference fit between the squeegee and the cleaning roller is adjusted to D2 (e.g., 1 mm), which is larger than D1 in the first cleaning mode. This increased interference fit allows the squeegee to more thoroughly remove excess liquid remaining on the cleaning roller during the reciprocating cleaning process, effectively reducing water stains on the floor.

[0086] By adjusting the interference fit between the scraper and the cleaning roller, the surface cleaning device proposed in this application can more effectively handle water stains in different cleaning modes. In particular, in the second cleaning mode, the increased interference fit allows the scraper to more thoroughly remove excess liquid from the cleaning roller, thereby significantly reducing water stain residue on the floor.

[0087] Example 6:

[0088] Based on any of the above embodiments, during the cleaning process, some heavily soiled areas are often encountered, requiring additional cleaning measures to achieve the desired cleaning effect. Therefore, the surface cleaning device proposed in this application also includes a third cleaning mode, which differs from the first and second cleaning modes and is a heavy-soil cleaning mode. The cleaning strategy in the third cleaning mode is to increase the liquid supply flow rate and / or increase the roller brush speed / or automatically provide cleaning agent to achieve targeted cleaning.

[0089] In one possible implementation of this application, if the backward movement distance of the surface cleaning device does not meet the preset conditions or the time interval between the pull-back and the push-forward is less than the preset value, the surface cleaning device is controlled to enter the third cleaning mode. In the third cleaning mode, the control system further includes controlling the support wheel and the cleaning roller to rotate in opposite directions.

[0090] In one embodiment, when the backward movement distance of the surface cleaning device does not meet the preset conditions, or the time interval between the pull-back and push-forward movements is less than a preset value, the control system will determine that the user may be focusing on cleaning a heavily soiled area, and therefore will control the surface cleaning device to enter the third cleaning mode. The preset conditions can be flexibly set according to actual cleaning needs and scenarios. For example, the preset backward movement distance could be 15 cm, 20 cm, etc.; the preset time interval between the pull-back and push-forward movements could be 1 second, 2 seconds, etc.

[0091] It should be noted that in the surface cleaning device, the support wheels not only support the movement of the device, but also form an assist system together with the assist motor that drives the rotation of the support wheels. This assist system can provide different levels of assistance according to the working status of the surface cleaning device and user needs, thereby optimizing the cleaning effect and user experience.

[0092] Specifically, the assist system adjusts its operation according to the different cleaning modes the surface cleaning device is in. In the first cleaning mode, the device is usually in a continuous forward movement, and the assist system mainly provides stable support and moderate assistance to ensure smooth and stable movement. In the second cleaning mode, the device reciprocates, and the assist system adjusts the magnitude and direction of assistance in real time according to the direction and speed of movement to help users complete cleaning tasks more easily. In the third cleaning mode, because heavily soiled areas need to be cleaned in detail, the assist system provides greater assistance to help the device remove stains more effectively.

[0093] In one embodiment, since the third cleaning mode primarily targets heavily soiled areas for spot cleaning, the surface cleaning device needs to perform high-frequency, high-intensity cleaning operations in localized areas. In this case, the assist system provides greater forward momentum and more flexible movement by adjusting the rotation speed and direction of the support wheels. Specifically, when the surface cleaning device detects that the user is focusing on cleaning a heavily soiled area, the control system activates the assist system to enter a special working state. The control system also adjusts the rotation direction and speed of the support wheels in real time based on the movement trajectory and speed of the cleaning rollers to ensure that the device can accurately stop at the heavily soiled area for spot cleaning. The application of this assist system in the third cleaning mode not only improves cleaning efficiency and quality but also reduces the user's operational burden. By adjusting the rotation state of the support wheels in real time and providing necessary assistance, the surface cleaning device can more flexibly and efficiently meet various cleaning needs.

[0094] For example, suppose a user finds a stubborn grease stain under the stove while cleaning the kitchen floor with the surface cleaning device. The user can trigger the third cleaning mode by pulling the device backward and quickly pushing it forward. Once in the third cleaning mode, the assist system responds immediately, causing the support wheels to rotate in the opposite direction to the cleaning rollers. This reduces the forward traction of the rotating cleaning rollers, keeping the cleaning head as stationary as possible for targeted cleaning.

[0095] By introducing an assist system consisting of support wheels and an assist motor that drives the rotation of the support wheels, the surface cleaning device can provide different levels of assistance in different cleaning modes, optimizing cleaning results and user experience. This design not only improves cleaning efficiency and quality but also reduces the user's operational burden, making the surface cleaning device more intelligent, efficient, and user-friendly.

[0096] Furthermore, the surface cleaning device proposed in this application has a larger liquid supply flow rate in the third cleaning mode. The liquid supply flow rate in the third cleaning mode is Q3, and Q3 is greater than Q1. Furthermore, in the third cleaning mode, the surface cleaning device may include the following cleaning strategies:

[0097] Increase the fluid supply flow rate: The fluid supply flow rate is set to Q3, and Q3 is greater than Q1 (the fluid supply flow rate of the first cleaning mode). For example, if Q1 is 500 ml per minute, then Q3 can be 700 ml per minute or higher. Increasing the fluid supply flow rate ensures that heavily soiled areas are more thoroughly moistened and cleaned.

[0098] Increase roller brush speed: The roller brush speed will also be increased to accelerate cleaning and improve cleaning effectiveness. The degree of speed increase can be adjusted according to actual needs.

[0099] Automatic detergent dispensing: In the third cleaning mode, the surface cleaning device can also automatically dispense detergent. These detergents can be specialized detergents for different types of stains, enabling more effective removal of stains from heavily soiled areas.

[0100] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0101] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0102] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A method for controlling a surface cleaning device, the surface cleaning device comprising a main body connected with a handle, a floor brush, a liquid supply system, a liquid collection system, a control system and a detection system, the floor brush being provided with a cleaning roller and a support wheel, a water supply tank of the liquid supply system being arranged on the main body or the floor brush to provide cleaning liquid to the cleaning roller or a surface to be cleaned through a water pump, the liquid collection system comprising a liquid collection tank and a liquid suction motor, the liquid collection tank being used for collecting dirty liquid, and the detection system being used for detecting motion parameters of the surface cleaning device, characterized in that, The control system controls the operation mode of the surface cleaning device according to the motion parameters obtained by the detection system, controls the surface cleaning device to operate in a first cleaning mode when the surface cleaning device moves forward, and enters a second cleaning mode when the number of times or the distance of backward movement of the surface cleaning device meets a preset condition. The second cleaning mode at least includes a liquid supply stage in which the liquid supply amount of the water pump is less than that in the first cleaning mode.

2. The control method of the surface cleaning device according to claim 1, wherein, In the first cleaning mode, the surface cleaning device always moves forward and the liquid supply flow rate is Q1, and in the second cleaning mode, the surface cleaning device reciprocates, and when it is detected that the surface cleaning device completes a backward movement and then moves forward again, the liquid supply flow rate of the surface cleaning device is controlled to be Q2, wherein Q2 is less than Q1.

3. The control method of the surface cleaning device according to claim 1, wherein, In the first cleaning mode, the surface cleaning device always moves forward and the liquid supply flow rate is Q1, and in the second cleaning mode, the surface cleaning device at least completes a reciprocating movement and then controls the surface cleaning device to operate at a liquid supply flow rate Q2, wherein Q2 is less than Q1.

4. The control method of the surface cleaning device according to claim 1, wherein, In the first cleaning mode, the surface cleaning device always moves forward and always supplies liquid at a liquid supply flow rate Q1, and in the second cleaning mode, the surface cleaning device reciprocates, and the liquid supply system is controlled to supply liquid intermittently at a liquid supply flow rate Q1.

5. The control method of the surface cleaning device according to claim 1, wherein, The second cleaning mode at least includes a suction stage in which the power of the suction motor is greater than the suction power in the first cleaning mode.

6. The control method of the surface cleaning device according to claim 5, wherein, In the first cleaning mode, the surface cleaning device always moves forward and the power of the suction motor is W1, and in the second cleaning mode, the surface cleaning device reciprocates, and when it is detected that the surface cleaning device completes a backward movement and then moves forward again, the power of the suction motor of the surface cleaning device is controlled to be W2, wherein W2 is greater than or equal to W1.

7. The control method of the surface cleaning device according to claim 1, wherein, When the surface cleaning device completes a backward movement and then moves forward for more than a preset time, the surface cleaning device is controlled to switch from the second cleaning mode to the first cleaning mode.

8. The control method of the surface cleaning device according to claim 1, wherein, The surface cleaning device further includes a scraping strip interference-fitted with the cleaning roller, when the surface cleaning device operates in the first cleaning mode, the interference amount of the scraping strip and the cleaning roller is controlled to be D1, and when the surface cleaning device operates in the second cleaning mode, the interference amount of the scraping strip and the cleaning roller is controlled to be D2, wherein D2 is greater than D1.

9. The control method of the surface cleaning device according to claim 1, wherein, The surface cleaning device further includes a third cleaning mode, when the backward movement distance of the surface cleaning device does not meet a preset condition or the time interval between the backward movement and the forward movement is less than a preset value, the surface cleaning device is controlled to enter the third cleaning mode, and the support wheel is controlled to rotate in the opposite direction of the cleaning roller.

10. The control method of the surface cleaning device according to claim 9, wherein, The liquid supply flow rate of the third cleaning mode is Q3, and Q3 is greater than Q1.

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