A cleaning apparatus

Abstract

The present application relates to cleaning equipment, including: the machine body, the machine body is provided with motor and sewage tank in, the motor is used for providing suction power, the sewage tank includes water level detection component and the air outlet of sewage tank communication with the air inlet of motor, the water level detection component includes first electrode and two second electrodes, along the circumference of the sewage tank, the two sides of the first electrode are spaced apart from each other and one second electrode is arranged, the polarity of the first electrode and the second electrode is different;With the axis of the machine body as the rotation axis, the machine body can rotate around the rotation axis to adjust the orientation of the sewage tank;During the rotation of the machine body around the rotation axis towards the direction where the first limit position or the second limit position is located, when the detection contact of the first electrode and the detection contact of at least one second electrode are immersed in water, the first electrode and the second electrode are conducted. When the cleaning equipment is used at a certain angle around the rotation axis, if the water level in the sewage tank reaches the suction range of the motor, the water level detection component can be detected more accurately.

Description

Technical Field

[0001] This invention relates to the field of water level detection technology, and in particular to a cleaning device. Background Technology

[0002] With economic development and social progress, people have increasingly higher demands for quality of life, and various cleaning devices have begun to appear in people's lives. Common cleaning devices include vacuum cleaners, robotic vacuum cleaners, and floor scrubbers, among which floor scrubbers are widely used because they combine washing and mopping functions.

[0003] A floor scrubber includes a clean water tank, a spray system, a wastewater tank, and a recycling system. The spray system is connected to the clean water tank, and the recycling system is connected to the wastewater tank. When the scrubber is working, the spray system sprays water, and the brush assembly abrades the floor to clean it. The motor in the recycling system provides suction to draw the cleaned wastewater into the wastewater tank for collection. During recycling, the suction force is stronger in the area near the wastewater tank's outlet. If the scrubber is used at certain angles, or if there is too much wastewater in the tank, wastewater may enter this suction area and be drawn into the motor, affecting its normal operation. Therefore, a water level detection device is usually installed in the wastewater tank. If the water level reaches this suction area, the device will sound an alarm to remind the user to empty the wastewater or adjust the scrubber's orientation to prevent water from entering the motor.

[0004] During the cleaning process, it may be necessary to rotate the floor scrubber around its own axis to increase the cleaning area. However, during this rotation, the water level detection component may malfunction, resulting in a situation where the water level in the wastewater tank reaches the aforementioned suction range, but the water level detection component cannot detect it. Summary of the Invention

[0005] Based on this, the present invention proposes a cleaning device. When the rod of the cleaning device is rotated around the rotation axis at a certain angle, if the water level in the sewage tank reaches the suction range of the motor, the water level detection component can detect it relatively accurately.

[0006] A cleaning device for cleaning an area to be cleaned, comprising:

[0007] The machine body contains a motor and a sewage tank. The motor provides suction force, and the sewage tank includes a water level detection component and a sewage tank outlet connected to the air inlet of the motor. Airflow can flow out of the sewage tank through the sewage tank outlet. The water level detection component includes a first electrode and two second electrodes. Along the circumference of the sewage tank, a second electrode is provided at intervals on both sides of the first electrode. The polarities of the first electrode and the second electrode are different.

[0008] Using the machine body's own axis as the rotation axis, the machine body can rotate around the rotation axis to adjust the orientation of the sewage tank; during the rotation of the machine body around the rotation axis towards the first extreme position, when the detection contact of the first electrode and at least one detection contact of the second electrode are both immersed in water, the first electrode and the second electrode are connected; during the rotation of the machine body around the rotation axis towards the second extreme position, when the detection contact of the first electrode and at least one detection contact of the second electrode are both immersed in water, the first electrode and the second electrode are connected.

[0009] In one embodiment, when the proportion of the conduction time between the first electrode and the second electrode within a preset duration is greater than a first threshold, the cleaning device enters a protection mode and the motor stops working.

[0010] In one embodiment, if the number of times the first electrode and the second electrode conduct within a preset time period is greater than a second threshold, the cleaning device enters a protection mode and the motor stops working.

[0011] In one embodiment, the first electrode and the two second electrodes are all located radially opposite the sewage tank outlet of the sewage tank.

[0012] In one embodiment, when the sewage tank is in a reclining state, during the process of the sewage tank rotating around the rotation axis toward the first limit position or the second limit position, when the detection contact of the first electrode and at least one detection contact of the second electrode are both immersed in water, the first electrode and the second electrode are connected.

[0013] In one embodiment, two second electrodes are symmetrically distributed on both sides of the first electrode;

[0014] In the lying-down state, when the sewage tank rotates around the rotation axis to the maximum distance between the sewage tank outlet and the area to be cleaned, the first electrode and the second electrode are connected when the detection contact of the first electrode and the detection contacts of the two second electrodes are both immersed in water.

[0015] When the wastewater tank rotates around the rotation axis to the first limit position or the second limit position, the first electrode and the second electrode are connected when the detection contact of the first electrode and one of the detection contacts of the second electrode are both immersed in water.

[0016] In one embodiment, in a plane perpendicular to the axis of rotation, with the projection of the axis of rotation as the center, the angle α between the line connecting the projection center of each of the two second electrodes and the projection of the axis of rotation is in the range of 60°≤α≤120°.

[0017] In one embodiment, the first limit position and the second limit position are arranged at intervals along the circumferential direction, and the range between the first limit position and the second limit position is the rotation range of the machine body.

[0018] When the machine body rotates to the point where the sewage tank is at the center of the first and second extreme positions in the circumferential direction, the distance between the sewage tank outlet and the area to be cleaned is at its maximum.

[0019] In one embodiment, the first electrode and the second electrode are arranged alternately along the circumferential direction.

[0020] In one embodiment, the water level detection component further includes another first electrode, the distance between the other first electrode and the air outlet of the sewage tank is less than the distance between the first electrode and the air outlet of the sewage tank; during the rotation of the body around the rotation axis from the second extreme position to the third extreme position, when the detection contact of the other first electrode and at least one detection contact of the second electrode are both immersed in water, the other first electrode and the second electrode are connected, wherein, along the circumferential direction, the second extreme position is located between the first extreme position and the third extreme position.

[0021] In one embodiment, a connecting piece is electrically connected to the second electrode, and the outer end of the connecting piece extends to the outside of the second electrode along the radial direction of the sewage tank.

[0022] In one embodiment, the connecting piece includes a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion being bent relative to each other, the first connecting portion being connected to the second electrode, and the second connecting portion extending to the outside of the second electrode along the radial direction.

[0023] In one embodiment, the first electrode is covered with a first protective sleeve, and the first protective sleeve is provided with a first water inlet for exposing a portion of the first electrode; and / or, the second electrode is covered with a second protective sleeve, and the second protective sleeve is provided with a second water inlet for exposing a portion of the second electrode.

[0024] In one embodiment, if the first electrode is covered with the first protective sleeve, the first water inlet is located on the side and end of the first electrode; if the second electrode is covered with the second protective sleeve, the second water inlet is located on the side and end of the second electrode.

[0025] In one embodiment, a second protective sleeve is provided on the outside of the second electrode. The second protective sleeve is provided with a second water inlet for exposing a portion of the second electrode. The second water inlet is located on the side and end of the second electrode. The first connecting part extends into the second protective sleeve through the second water inlet and is installed at the end of the second electrode.

[0026] In one embodiment, the water level detection component further includes a third electrode and a fourth electrode spaced apart along the circumferential direction. The third electrode and the fourth electrode have different polarities. Along the axial direction of the rotation axis, the distance between the detection contact of the third electrode or the detection contact of the fourth electrode and the air outlet of the sewage tank is greater than the distance between the detection contact of the first electrode or the detection contact of the second electrode and the air outlet of the sewage tank. When both the detection contact of the third electrode and the detection contact of the fourth electrode are immersed in water, the third electrode and the fourth electrode are connected.

[0027] In one embodiment, when the proportion of the conduction time between the third electrode and the fourth electrode within the preset duration is greater than a first threshold, the cleaning device enters the protection mode and the motor stops working.

[0028] In one embodiment, when the number of times the third electrode and the fourth electrode conduct within the preset time period is greater than a second threshold, the cleaning device enters the protection mode and the motor stops working.

[0029] In one embodiment, the first electrode, the second electrode, the third electrode, and the fourth electrode each include a mounting end for connection to the wastewater tank;

[0030] In the axial direction perpendicular to the rotation axis, the distance between the mounting end of the first electrode or the mounting end of the second electrode and the air outlet of the sewage tank is greater than the distance between the mounting end of the third electrode or the mounting end of the fourth electrode and the air outlet of the sewage tank.

[0031] In one embodiment, the first electrode, the second electrode, the third electrode, and the fourth electrode each include a working end disposed opposite to their own mounting end, and the detection contact of the first electrode, the second electrode, the third electrode, and the fourth electrode is located at their respective working ends;

[0032] In the axial direction perpendicular to the rotation axis, the distance between the mounting end of the first electrode or the mounting end of the second electrode and the air outlet of the sewage tank is greater than the distance between the mounting end of the third electrode or the mounting end of the fourth electrode and the air outlet of the sewage tank.

[0033] In one embodiment, the third electrode and the fourth electrode are respectively disposed at both ends of the sewage tank in the radial direction, and along the axial direction of the rotation axis, the detection contact of the third electrode and the detection contact of the fourth electrode are equidistant from the air outlet of the sewage tank.

[0034] In one embodiment, the fourth electrode is provided on both sides of the third electrode along the circumferential direction. When the sewage tank rotates around the rotation axis to the first limit position or the second limit position, the third electrode and the fourth electrode are connected when the detection contact of the third electrode and at least one detection contact of the fourth electrode are immersed in water.

[0035] In one embodiment, the wastewater tank includes a tank body and a tank cover. The tank cover is installed at the top opening of the tank body, and a receiving cavity for containing wastewater is formed between the tank cover and the tank body. The first electrode and the second electrode are installed on the tank cover, and the first electrode and the second electrode extend downward from the tank cover into the receiving cavity.

[0036] In one embodiment, a first inductive connector and a second inductive connector are installed on the lid. The first inductive connector and the second inductive connector have opposite polarities and are both exposed outside the lid. The positive polarity components of the first electrode and the second electrode are electrically connected to the positive polarity components of the first inductive connector and the second inductive connector, respectively. The negative polarity components of the first electrode and the second electrode are electrically connected to the negative polarity components of the first inductive connector and the second inductive connector.

[0037] The aforementioned cleaning equipment includes a motor and a wastewater tank within its body. The wastewater tank comprises a water level detection component and a wastewater tank outlet connected to the motor's air inlet. The water level detection component includes a first electrode and two second electrodes with different polarities. Along the circumference of the wastewater tank, a second electrode is spaced apart on each side of the first electrode. Since second electrodes are located on both sides of the first electrode, conduction is achieved when the detection contact of the first electrode is immersed in water with the detection contact of either second electrode. Using the machine's own axis as the rotation axis, as the cleaning equipment rotates around the axis towards the first or second extreme position, even if one of the two second electrodes' detection contacts is no longer immersed in water, conduction is still possible if the detection contact of the first electrode and the other second electrode's detection contact remain immersed. This allows for timely detection when the machine rotates to multiple positions, resulting in a wider detection range. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the cleaning equipment in an upright state according to one embodiment of the present invention;

[0039] Figure 2 for Figure 1 A schematic diagram of the cleaning equipment in a reclining position;

[0040] Figure 3 for Figure 1 A schematic diagram of the wastewater tank in the cleaning equipment;

[0041] Figure 4 for Figure 3 A schematic diagram of the medium-sized wastewater tank from another angle;

[0042] Figure 5 for Figure 3 A schematic diagram of the structure of the wastewater tank;

[0043] Figure 6 for Figure 3 A schematic diagram of the internal structure of the cover of the wastewater tank;

[0044] Figure 7 for Figure 3 Schematic diagram of some components inside the wastewater tank;

[0045] Figure 8 for Figure 3 A schematic diagram of the structure of components such as the first electrode and the second electrode inside the wastewater tank;

[0046] Figure 9 for Figure 8 A magnified view of a section at point A in the middle;

[0047] Figure 10 for Figure 3 A schematic diagram of the structure of components such as the first and second protective casings inside the wastewater tank;

[0048] Figure 11 for Figure 3 A schematic diagram of the structure of components such as the third and fourth electrodes inside the wastewater tank;

[0049] Figure 12 for Figure 1 A cross-sectional view of the cleaning equipment.

[0050] Figure 13 This is a schematic diagram showing the position of the longer detection electrode inside the wastewater tank when the cleaning equipment is tilted in the prior art.

[0051] Figure 14 for Figure 13 The diagram shown illustrates the position of the detection electrodes inside the wastewater tank when the cleaning equipment is in a reclining state.

[0052] Figure 15 This is a schematic diagram showing the position of a detection electrode with a relatively short length after rotating around the axis of rotation in the prior art when the cleaning equipment is lying down.

[0053] Figure 16 This is a schematic diagram showing the position of the detection electrode (with) in the prior art when the cleaning equipment is lying down and rotated around the axis of rotation, with a relatively short length. Figure 15 (Rotation direction opposite);

[0054] Figure 17 This is a schematic diagram showing the positions of the first and second electrodes of the cleaning device after it has been laid down and rotated about the axis of rotation in one embodiment of this application.

[0055] Figure 18 This is a schematic diagram showing the positions of the first and second electrodes of the cleaning device after it has been laid down and rotated about its axis of rotation, according to one embodiment of this application. Figure 17 (Rotation direction opposite);

[0056] Figure 19 This is a top / bottom view schematic diagram of the first electrode and the second electrode in one embodiment of this application;

[0057] Figure 20 This is a schematic diagram showing the positions of the first electrode and the second electrode in one embodiment of this application;

[0058] Figure 21 This is a schematic diagram showing the position of the second electrode inside the sewage tank when the cleaning equipment is in a lying position according to one embodiment of this application;

[0059] Figure 22 This is a schematic diagram showing the positions of the first electrode and the second electrode in one embodiment of this application;

[0060] Figure 23 for Figure 1 A schematic diagram of the cleaning equipment in an inclined state.

[0061] Figure label:

[0062] 10 units of the main body and 20 units of the floor brush assembly;

[0063] Wastewater tank 100, tank body 110, bottom wall 111, gas-liquid mixture inlet 1111, side wall 112, tank cover 120, tank cover body 121, wastewater tank air outlet 1211, tank cover shell 122, airflow outlet 1221, wastewater pipe 130, and receiving cavity 140.

[0064] First electrode 210, first protective casing 220, first water inlet 221

[0065] Second electrode 310, second protective sleeve 320, second water inlet 321, connecting piece 330, first connecting part 331, second connecting part 332, fastener 340.

[0066] Third electrode 410, third casing 420, third inlet 421

[0067] Fourth electrode 510, fourth casing 520, fourth inlet 521

[0068] Mounting bracket 610, first sensor connector 620, second sensor connector 630

[0069] Filter assembly 700, filter screen 710;

[0070] Baffle tube 810, baffle cavity 820;

[0071] Wastewater 910, detection electrode 920, motor air inlet 930. Detailed Implementation

[0072] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0073] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0074] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0075] In this invention, unless otherwise explicitly 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 or an electrical 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0076] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0077] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0078] See Figure 1 , Figure 2 , Figure 13 and Figure 23 , Figure 1 In this case, the cleaning equipment is in an upright position, allowing it to clean relatively spacious areas. Figure 2 In this context, the cleaning equipment is in a reclining position, allowing it to reach under sofas or beds for cleaning. The reclining position means the equipment's body 10 is parallel to the ground (i.e., the area to be cleaned), or at a small angle to the ground. Generally, a reclining position is considered to be when the angle between the equipment's body 10 axis and the ground is no greater than 15 degrees. The cleaning equipment can also be in a... Figure 23 The tilted state shown is used, the tilted state is in Figure 1 Based on the state shown, the axis of the cleaning equipment body 10 is tilted relative to the horizontal plane. Figure 13 (As shown in the diagram). In the tilted state, the angle between the axis of the cleaning device's body 10 and the ground is greater than 15 degrees and less than 90 degrees. The cleaning device rotates up and down by rotating its body 10 around the pivot axis X, thereby changing the angle between the body 10 and the ground and switching between the three states. Simultaneously, the cleaning device rotates left and right by rotating its body 10 around the rotation axis O, thereby changing the orientation of the wastewater tank 100 within the body 10 to achieve a larger cleaning area while maintaining the user's position.

[0079] See Figure 13 and Figure 14The cleaning equipment includes a clean water tank, a water spraying system, a wastewater tank 100, and a recycling system. The water spraying system is connected to the clean water tank, and the recycling system is connected to the wastewater tank 100. When the cleaning equipment is working, the water spraying system sprays water, and the floor brush assembly 20 assists in rubbing the floor, thereby cleaning the floor. In the recycling system, a motor operates to provide suction, drawing the cleaned wastewater into the wastewater tank 100 with the airflow. After the gas-liquid mixture passes through the wastewater tank 100, gas-liquid separation is completed. The wastewater 910 remains in the wastewater tank 100, while the airflow flows into the motor through the motor air inlet 930 on the wastewater tank 100 and is finally discharged from the motor air outlet. Of course, in other embodiments, the floor brush assembly 20 can be replaced with other similar components, such as a brush head for cleaning walls. The following embodiments mainly focus on the floor brush assembly 20.

[0080] When the motor is operating, the suction force is relatively strong within a range B of the sewage tank 100 near the motor air inlet 930. If sewage 910 enters range B, it will be drawn into the motor, potentially affecting its normal operation. Range B refers to the area within the sewage tank 100 that is located above all the furthest points where the motor can draw dirt into the tank through the air inlet 930. Specifically, if the motor's suction range is approximated as a sphere, range B is the intersection of this sphere and the internal space of the sewage tank 100. It is understandable that, in situations like... Figure 13 In the first scenario, if the sewage tank 100 contains a large amount of sewage and the water level is too high, the water level line may enter range B, posing a risk of water entering the motor. Alternatively, in the second scenario, if the cleaning equipment is in operation... Figure 14 As shown in the diagram, even with a small amount of water, the water level may still be within range B when the device is lying down. Alternatively, in the third scenario, if the cleaning equipment shakes during use, some wastewater may splash into range B, posing a risk of water entering the motor. The first two scenarios are more common, and the following explanation will focus on them; the third scenario can be understood similarly.

[0081] As can be seen from the above, if the water level line formed by dirt in the sewage tank 100 enters range B for a period of time (defined as the preset time) exceeding the preset time or the number of times it enters range B, the risk of motor failure due to water ingress is high. In this case, the motor should be stopped, and the sewage tank 100 should be removed immediately to empty the stored sewage. Alternatively, the operating posture of the cleaning equipment should be adjusted, for example, by rotating the body 10 of the cleaning equipment away from the ground, thus increasing the angle between the axis of the body 10 and the ground. Therefore, the sewage tank 100 is generally equipped with a detection electrode 920 to detect whether the water level line in the sewage tank 100 has reached range B. If, within the preset time, the water level line formed by dirt in the sewage tank 100 enters range B for a period of time exceeding the preset time or the number of times it enters range B, the detection electrode 920 will detect this and cause the machine to enter protection mode. At this point, the motor and other components in the recycling system stop working, and an alarm is sounded, reminding the user to remove the wastewater tank 100 and empty the wastewater collected inside, or to adjust the usage posture of the cleaning equipment.

[0082] See Figure 13 and Figure 14 In related technologies, two detection electrodes 920 extending downwards along the axial direction of the sewage tank 100 are installed inside the sewage tank 100. Radially along the sewage tank 100, the two detection electrodes 920 are typically located away from the motor air inlet 930 and close to the ground or the user. One of the two detection electrodes 920 is positive, and the other is negative. Both detection electrodes 920 have detection contacts extending into the sewage tank 100. Specifically, the detection contacts are typically located at the ends of the detection electrodes 920 away from their connection points with the sewage tank 100. The setting of the detection contacts of the two detection electrodes 920 is based on the aforementioned range B and the limit water level line to ensure that sewage in the sewage tank 100 cannot enter the motor air inlet 930. Specifically, the detection contacts can be set below the limit water level line. If the detection contacts of both detection electrodes 920 are simultaneously immersed in water, the two detection electrodes 920 conduct, forming a closed circuit between them. If neither of the detection contacts of the two detection electrodes 920 is immersed in water, or if only one of the detection contacts is immersed in water, then there is an open circuit between the two detection electrodes 920, and they will not conduct. The specific circuit connections and the processor's detection of whether the two detection electrodes 920 are conductive can be found in existing technology and will not be elaborated here.

[0083] It should be noted that, in one specific implementation, the aforementioned limiting water level line refers to the point where the water surface is tangent to range B. Of course, in another feasible implementation, a portion of the water storage can be sacrificed; in this case, the limiting water level line refers to the point where the water surface is not tangent to range B and there is a certain distance between them.

[0084] See Figure 15 and Figure 16 However, in Figure 13 The tilt state shown or Figure 14 Based on the lying position shown, if it is necessary to rotate the body 10 of the cleaning equipment around the axis of rotation O ( Figure 1 and Figure 23 As shown, rotating the device by a certain angle to increase the washing range may result in a situation where, even if the water level reaches the suction range B of the motor, only one detection electrode 920 is immersed in the water, while the other cannot be immersed.

[0085] See Figures 7 to 9 ,as well as Figure 23 Based on the above problems, a cleaning device in one embodiment of the present invention includes a body 10, within which a motor and a wastewater tank 100 are disposed. The motor provides suction force. The wastewater tank 100 includes a water level detection component and a wastewater tank outlet 1211 for communicating with the air inlet of the motor. The water level detection component includes a first electrode 210 and two second electrodes 310, the first electrode 210 and the second electrodes 310 having different polarities. Along the circumference of the wastewater tank 100, a second electrode 310 is disposed at intervals on both sides of the first electrode 210. The cleaning device is positioned with respect to the axis O of the body 10. Figure 1 and Figure 23 As shown, the machine body 10 can rotate around the rotation axis O to adjust the orientation of the sewage tank 100. During the rotation of the machine body 10 around the rotation axis O towards the first extreme position, when both the detection contact of the first electrode 210 and the detection contact of at least one second electrode 310 are immersed in water, the first electrode 210 and the at least one second electrode 310 are connected. Simultaneously, during the rotation of the machine body 10 around the rotation axis O towards the second extreme position, when both the detection contact of the first electrode 210 and the detection contact of at least one second electrode 310 are immersed in water, the first electrode 210 and the at least one second electrode 310 are connected.

[0086] Specifically, the first electrode 210 can be the positive electrode and the second electrode 310 the negative electrode; or, the first electrode 210 can be the negative electrode and the second electrode 310 the positive electrode. Along the circumference of the wastewater tank 100, the second electrode 310, the first electrode 210, and the second electrode 310 are arranged alternately. (See reference...) Figure 4 and Figure 6 After gas-liquid separation, the sewage in the sewage tank 100 flows out of the receiving cavity 140 of the sewage tank 100 through the sewage tank outlet 1211, and then flows into the motor through the air outlet 1221 connected to the sewage tank outlet 1211. The sewage tank outlet 1211 here is equivalent to the aforementioned... Figure 13 The motor air inlet 930 is shown in the prior art embodiment.

[0087] In this application, if the body 10 of the cleaning equipment rotates around the axis O ( Figure 1 and Figure 23 As shown, during the rotation towards the first or second extreme position, within its rotation range, even if the detection contact of one of the two second electrodes 310 is no longer immersed in water, if the detection contact of the first electrode 210 and the detection contact of the other second electrode 310 are still immersed in water, the circuit between the first electrode 210 and the second electrode 310 can still be connected. This enables timely detection when the body 10 is rotated to multiple positions, resulting in a wider detection range.

[0088] Specifically, see Figure 6 , Figure 17 and Figure 18 The first electrode 210 and the two second electrodes 310 are located on the opposite side of the sewage tank outlet 1211 of the sewage tank 100 in the radial direction of the sewage tank 100, so that the first electrode 210 and the two second electrodes 310 are far away from the sewage tank outlet 1211, thereby avoiding entering the suction range of the motor, so that the sewage can be detected in time before it enters the suction range.

[0089] See Figure 23 Specifically, when the body 10 is connected to the floor brush assembly 20, the aforementioned rotation axis O ( Figure 1 and Figure 23 (As shown) The cleaning device's body 10 and floor brush assembly 20 are connected at a rotating point, with the rotation axis O parallel to the axis of the body 10. The body 10 of the cleaning device can rotate up and down relative to the floor brush assembly 20 around the pivot axis X to adjust the angle between the body 10 and the ground, i.e., the tilt angle of the body 10; the body 10 can also rotate left and right relative to the floor brush assembly 20 around the rotation axis O. During the rotation of the body 10, the floor brush assembly 20 will also rotate left and right relative to the ground to a certain extent, thereby expanding the cleaning area.

[0090] Specifically, in some embodiments, the first and second extreme positions are arranged at intervals along the circumference of the sewage tank 100, and the range between the two extreme positions is the rotation range of the machine body 10. When the machine body 10 rotates to the point where the sewage tank 100 is at the center of the two extreme positions in the circumference of the sewage tank 100, the distance between the sewage tank outlet 1211 and the area to be cleaned (i.e., the ground) is at its maximum.

[0091] Specifically, as previously described, the body 10 of the cleaning equipment is positioned relative to the floor brush assembly 20 about the rotation axis O ( Figure 1 and Figure 23As shown, the wastewater tank 100 rotates synchronously with the body 10. During the rotation of the body 10, the position where it can no longer rotate is the limit position. The body 10 can rotate clockwise and counterclockwise (left and right), therefore, the body 10 and the wastewater tank 100 have two limit positions, namely the aforementioned first limit position and second limit position. That is, the body 10 can only rotate left and right relative to the floor brush assembly 20 within a certain angular range. For example, the angle between the first limit position and the second limit position is 60 degrees, that is, the aforementioned rotation range angle is 60 degrees. When the wastewater tank 100 rotates to the point where the distance between the wastewater tank outlet 1211 and the area to be cleaned (i.e., the ground) is at its maximum, that is, when the height of the wastewater tank outlet 1211 is at its maximum, the position of the wastewater tank 100 at this time is the center position within the aforementioned rotation range. The first limit position and the second limit position are symmetrically distributed on both sides of this center position along the circumference of the wastewater tank 100. Therefore, the angle W through which the sewage tank 100 rotates to the left from its central position to the first extreme position is equal to the angle Y through which the sewage tank 100 rotates to the right from its central position to the second extreme position. When the rotation range is 60 degrees, both W and Y are 30 degrees.

[0092] Specifically, in some embodiments, when the proportion of the conduction time between the first electrode 210 and the second electrode 310 within a preset duration exceeds a first threshold, the cleaning device enters a protection mode, and the motor of the cleaning device stops working. For example, if the preset duration is 1 minute, and within 1 minute, the proportion of the total conduction time between the first electrode 210 and the second electrode 310 exceeds half, i.e., the total conduction time exceeds 30 seconds, then the cleaning device enters a protection mode, and the motor of the cleaning device stops working. Since the cleaning device is always in motion during the cleaning process, the first electrode 210 and the second electrode 310 may conduct and then disconnect momentarily. To avoid the frequent occurrence of the above situation, which would lead to frequent start-stop of the cleaning device and shorten the life of the motor, in this embodiment, if the proportion of the conduction time between the first electrode 210 and the second electrode 310 within the preset duration is small, it will continue to work by default. Only when the proportion of the conduction time within the preset duration exceeds the first threshold will it enter the protection mode. Through this setting, frequent start-stop of the motor can be reduced, thereby extending its service life.

[0093] Alternatively, in some embodiments, if the number of times the first electrode 210 and the second electrode 310 are switched on exceeds a second threshold within a preset time period, the cleaning device enters a protection mode, and the motor of the cleaning device stops working. For example, if the preset time period is 1 minute, and the total number of times the first electrode 210 and the second electrode 310 are switched on exceeds five times within 1 minute, the cleaning device enters a protection mode, and the motor of the cleaning device stops working. Similar to the aforementioned embodiments, this setting can reduce the frequency of motor start-stop, thereby extending its service life.

[0094] In some embodiments, when the proportion of the conduction time of the first electrode 210 and the second electrode 310 within a preset time period is greater than a first threshold, or when the number of conductions of the first electrode 210 and the second electrode 310 is greater than a second threshold, the cleaning device enters a protection mode, and the motor of the cleaning device stops working. That is, the control of whether the cleaning device enters a protection mode is based on two dimensions: the total conduction time and the number of conductions.

[0095] Common sense dictates that if the water level in the wastewater tank 100 is too high, or if the angle between the cleaning equipment's body 10 and the ground is too small (e.g., when it's lying down), the water level may enter the motor's suction range, posing a risk of water entering the motor. Therefore, based on the aforementioned assessment, if the cleaning equipment enters a protection mode and the motor stops working, the user can promptly empty the wastewater from the wastewater tank 100 or adjust the cleaning equipment's orientation, such as increasing the angle between the axis of the body 10 and the ground, thereby reducing the likelihood of water entering the motor.

[0096] See Figures 7 to 9 ,as well as Figure 17 and Figure 18 In some embodiments, when the sewage tank 100 is in a reclining state, the sewage tank 100 moves with the body 10 around the rotation axis O. Figure 1 and Figure 23 As shown, during rotation towards the first or second extreme position, when both the detection contact of the first electrode 210 and at least one detection contact of the second electrode 310 are immersed in water, the first electrode 210 and the second electrode 310 are connected. Of course, in other embodiments, when the sewage tank 100 is tilted, if the sewage tank 100 rotates around the rotation axis O towards the first or second extreme position, and both the first electrode 210 and at least one second electrode 310 are immersed in water, the first electrode 210 and the second electrode 310 can also be connected. That is, the method of providing second electrodes 310 on both sides of the first electrode 210 in this application is applicable not only to rotation in a lying position when cleaning a narrow space, but also to rotation in a tilted position during normal cleaning. Of course, it should be noted that the positions of the detection contacts of the electrodes differ between the lying and tilted positions to achieve the above function. Specifically, see also... Figure 13 The detection contact of the electrode in the tilted state needs to extend below the electrode in the lying-down state to ensure that the electrode is not too short and the detection contact is not too far from the water surface in the tilted state (in the tilted state, the electrode in this application is equivalent to...). Figure 13 The prior art shown is improved by adding an electrode to the detection electrode 920; the lying state is small, and the electrode in this application is equivalent to being in Figure 14The prior art shown is an improvement on the detection electrode 920 by adding an additional electrode. Although the length of the electrode is different in the two cases, the principle is similar. The following mainly describes the rotation in the lying position.

[0097] In the lying position, the first electrode 210 is at its lowest height above the ground. Therefore, as the water level in the sewage tank 100 gradually rises to approach range B, three stages will occur. In the first stage, the water level in the sewage tank 100 is low, and neither the first electrode 210 nor the two second electrodes 310 are submerged. Therefore, there is no electrical connection between the first electrode 210 and the second electrode 310. In the second stage, the water level in the sewage tank 100 continues to increase, and the first electrode 210 is submerged, but neither of the two second electrodes 310 is submerged. Therefore, there is no electrical connection between the first electrode 210 and the second electrode 310. In the third stage, the water volume in the sewage tank 100 continues to increase. In addition to the first electrode 210 being immersed in the water, one of the two second electrodes 310 is immersed in the water while the other is not. At this time, the second electrode 310 immersed in the water is connected to the first electrode 210; or, in addition to the first electrode 210 being immersed in the water, both second electrodes 310 are also immersed in the water. At this time, the two second electrodes 310 immersed in the water are connected to the first electrode 210 respectively, forming two parallel circuits.

[0098] While lying down, rotate the machine body 10 around the axis of rotation O ( Figure 1 and Figure 23 As shown, during rotation, even when rotated to its limit position, the detection contact of the first electrode 210 and at least one detection contact of the second electrode 310 can be immersed in water. Specifically, in one case, the body 10 of the cleaning device... Figure 2 When the machine body 10 rotates left and right in the lying position as shown, if the rotation angle is small and the water level in the sewage tank 100 reaches the suction range of the motor, the detection contact of the first electrode 210 and the detection contacts of the two second electrodes 310 may be completely immersed in water. At this time, the two second electrodes 310 are respectively connected to the first electrode 210, forming two parallel circuits. (See reference...) Figure 17 and Figure 18 Alternatively, in another scenario, if the machine body 10 rotates at a large angle and the water level in the sewage tank 100 reaches the suction range of the motor, one of the detection contacts of the two second electrodes 310 is immersed in water, while the other detection contact is not. In this case, the second electrode 310 with the detection contact immersed in water is connected to the first electrode 210. Therefore, during the rotation of the machine body 10 in the lying position, no [further issues will occur]. Figure 15 and Figure 16In this configuration, only one of the electrode's detection contacts is immersed in water, while the other is not. Therefore, even when the machine body 10 rotates at a large angle, it can still accurately and promptly detect when the water level in the sewage tank 100 reaches the motor's suction range. This means that the machine body 10 can perform timely detection when rotated to multiple positions, resulting in a wider detection range.

[0099] Specifically, when using cleaning equipment in narrow areas under beds or sofas, the machine is not easily pushed or pulled back and forth. Therefore, in some embodiments, the body 10 of the cleaning equipment is rotated relative to the floor brush assembly 20 around the axis O while lying down. Figure 1 and Figure 23 Rotate (as shown) to increase the cleaning area.

[0100] In some embodiments, along the circumference of the sewage tank 100, two second electrodes 310 are symmetrically distributed on both sides of the first electrode 210, and the sewage tank 100 is rotated around the aforementioned axis of rotation O. Figure 1 and Figure 23 When the distance between the sewage tank outlet 1211 and the area to be cleaned is at its maximum (as shown), the detection contact of the first electrode 210 and the detection contacts of the two second electrodes 310 are all immersed in water, and the first electrode 210 and the second electrode 310 are connected. When the sewage tank 100 rotates around the rotation axis O to the first or second limit position, the detection contact of the first electrode 210 and one of the detection contacts of the second electrode 310 are all immersed in water, and the first electrode 210 and the second electrode 310 are connected. Specifically, in the lying position, the heights of the detection contacts of the two second electrodes 310 are equal, and the angle between the detection contact of any second electrode 310 and the detection contact of the first electrode 210 is equal. Regarding the three stages of the continuously rising water level mentioned above, in the third stage, when the detection contact of the first electrode 210 and the detection contacts of the two second electrodes 310 are all immersed in water, and the water level in the sewage tank 100 reaches the suction range of the motor, the detection contacts of the two second electrodes 310 are simultaneously immersed in water. Of course, in other embodiments, the two second electrodes 310 may also be asymmetrically distributed on both sides of the first electrode 210, that is, the angle between the detection contact of each of the two second electrodes 310 and the detection contact of the first electrode 210 is not equal.

[0101] See Figure 1 , Figure 19 and Figure 20 In some embodiments, perpendicular to the rotation axis O ( Figure 1 and Figure 23In the plane shown, with the projection of the rotation axis O as the center, the angle α between the lines connecting the projection centers of the two second electrodes 310 and the projection of the rotation axis O ranges from 60° ≤ α ≤ 120°. In one embodiment, α is 84°. Specifically, the projection of the rotation axis O is o, the projection center of one second electrode 310 is M, the projection center of the other second electrode 310 is N, and the projection center of the first electrode 210 is Q. The line connecting the projection center of one second electrode 310 and the projection of the rotation axis O is oM, and the line connecting the projection center of the other second electrode 310 and the projection of the rotation axis O is oN. The angle between oM and oN is α. oM and oN are symmetrically distributed on both sides of oQ.

[0102] See Figure 21 In some embodiments, both the first electrode 210 and the second electrode 310 extend from the top of the sewage tank 100 toward the bottom. Both the first electrode 210 and the second electrode 310 are straight rods, and their detection contacts are located at the ends furthest from their connection points with the sewage tank 100. Of course, in other embodiments, the first electrode 210 and the second electrode 310 can also be configured in other shapes, such as an "L" shape. In the lying-down state, around the rotation axis O ( Figure 1 and Figure 23 As shown, during the rotation to the limit position, the detection contacts of the first electrode 210 and the second electrode 310 extend at least below the intersection of range B and the vertical reference line M. This ensures that when the horizontal water level rises to this intersection, both the detection contacts of the first electrode 210 and the second electrode 310 are immersed in the water to achieve conductivity. The vertical reference line M is a reference line extending vertically from the center of the sphere within radius range B. In specific design, the intersection point can be determined using a 10° angle between the body 10 and the ground as a reference standard, and the extension length of the second electrode 310 can be designed accordingly.

[0103] In some embodiments, the first electrode 210 and the second electrode 310 are arranged alternately along the circumference of the sewage tank 100.

[0104] See Figure 22Specifically, in some embodiments, the water level detection component further includes another first electrode 210, the distance between the other first electrode 210 and the sewage tank outlet 1211 is less than the distance between the first electrode 210 and the sewage tank outlet 1211; during the rotation of the body 10 around the rotation axis from the second extreme position to the third extreme position, when the detection contact of the other first electrode 210 and the detection contact of at least one second electrode 310 are both immersed in water, the other first electrode 210 and the second electrode 310 are connected, wherein, along the circumference of the sewage tank 100, the second extreme position is located between the first extreme position and the third extreme position. As mentioned above, during the rotation of the body 10, the position where it can no longer rotate is the extreme position. The body 10 can rotate clockwise and counterclockwise (left and right), therefore the body 10 and the sewage tank 100 have two extreme positions, namely the aforementioned first extreme position and second extreme position. In this embodiment, the range of rotation of the body 10 is increased based on the aforementioned embodiment. That is, after the body 10 rotates to the second limit position, it can continue to rotate to reach the third limit position.

[0105] Specifically, the water level detection component includes two first electrodes 210 and two second electrodes 310, arranged clockwise as one second electrode 310, one first electrode 210, another second electrode 310, and another first electrode 210. When the rotation angle is large, one first electrode 210 ( Figure 22 The detection contact of the rightmost of the two first electrodes 210 is connected to a second electrode 310. Figure 22 The detection contact of the rightmost of the two second electrodes 310 may no longer be immersed in water, but at this time the other first electrode 210 ( Figure 22 The detection contact of the leftmost of the two first electrodes 210, and the other second electrode 310 ( Figure 22 If the detection contact of the leftmost of the two second electrodes 310 is simultaneously immersed in water, it can still conduct. This setting allows the cleaning equipment body 10 to accurately and promptly detect when the water level has reached the motor's suction range even when rotated at a greater angle while lying down.

[0106] See Figures 6 to 9 ,as well as Figure 20 In some embodiments, a connecting piece 330 is electrically connected to the second electrode 310, with its outer end extending outward from the outer side of the second electrode 310 along the radial direction of the wastewater tank 100. Specifically, conductivity is achieved when the detection contact of the first electrode 210 and at least one connecting piece 330 are immersed in water. Figure 20As shown, if the detection contact of the second electrode 310 is not fully submerged in the sewage while lying down, it may lead to a lack of conductivity, resulting in inaccurate detection. In this embodiment, by providing a connecting piece 330 on the second electrode 310, when the connecting piece 330 is immersed in water, the first electrode 210 and the second electrode 310 can conduct earlier, thus enabling timely detection. Therefore, the method in this embodiment can detect the sewage level just before it reaches the suction range of the motor, thereby meeting the requirements for the number of conductions or the proportion of conduction time earlier (see the aforementioned embodiment), thus entering the protection mode earlier. The recycling system then activates in advance, stopping the sewage from entering the sewage tank 100, thereby reducing the amount of water entering the sewage tank 100 during the time difference between entering the protection mode and stopping the water intake, preventing the water that continues to enter during this period from entering the motor through the sewage tank outlet 1211.

[0107] See Figures 7 to 9 In some embodiments, the connecting piece 330 includes a first connecting portion 331 and a second connecting portion 332, which are bent relative to each other. The first connecting portion 331 is connected to the second electrode 310, and the second connecting portion 332 extends radially to the outside of the second electrode 310. Specifically, the first connecting portion 331 is disposed at the bottom end of the second electrode 310, and is plate-shaped, parallel to the bottom end face of the second electrode 310. The first connecting portion 331 is fixed to the second electrode 310 by a fastener 340. The fastener 340 can be a threaded fastener, such as a screw. In other embodiments, the first connecting portion 331 can also be fixed to the second electrode 310 by snap-fit, adhesive, or other means. In some embodiments, the first connecting portion 331 and the second connecting portion 332 are integrated, and the relative bending angle between them is 90°. In the embodiment shown in the accompanying drawings, the second connecting portion 332 is bent downward relative to the first connecting portion 331; in other embodiments, the second connecting portion 332 may also be bent upward relative to the first connecting portion 331.

[0108] See Figures 7 to 10In some embodiments, a first protective sleeve 220 is fitted over the first electrode 210, and the first protective sleeve 220 is provided with a first water inlet 221 for exposing a portion of the first electrode 210. Alternatively, a second protective sleeve 320 is fitted over the second electrode 310, and the second protective sleeve 320 is provided with a second water inlet 321 for exposing a portion of the second electrode 310. Specifically, in some embodiments, the first protective sleeve 220 and the second protective sleeve 320 are selectively provided; in other embodiments, the first protective sleeve 220 and the second protective sleeve 320 are provided simultaneously. The following description uses the embodiment shown in the accompanying drawings as an example, where the first protective sleeve 220 and the second protective sleeve 320 are provided simultaneously. The first protective sleeve 220 can be fixed to the outside of the first electrode 210 by means of adhesive bonding, snap-fitting, etc. Similarly, the second protective sleeve 320 can be fixed to the outside of the second electrode 310 by means of adhesive bonding, snap-fitting, etc. Wastewater can flow through the first inlet 221 and contact the first electrode 210, and can also flow through the second inlet 321 and contact the second electrode 310. By providing the first protective sleeve 220 and the second protective sleeve 320, the first electrode 210 and the second electrode 310 can be protected, reducing the risk of electrode damage caused by hard objects sucked in with the wastewater colliding with the electrodes. Furthermore, if long conductive objects are sucked into the wastewater tank 100, the conductive objects must pass through the corresponding inlet to contact the corresponding electrode. That is, the first protective sleeve 220 and the second protective sleeve 320 can block long conductive objects, avoiding interfering closed-loop paths, thereby improving the accuracy of water level detection.

[0109] Specifically, in some embodiments, if a first protective sleeve 220 is provided around the first electrode 210, a first water inlet 221 is disposed on the side and end of the first electrode 210; if a second protective sleeve 320 is provided around the second electrode 310, a second water inlet 321 is disposed on the side and end of the second electrode 310. Specifically, the first protective sleeve 220 has interconnected notches corresponding to a portion of the side and end of the first electrode 210 to form the first water inlet 221. The second protective sleeve 320 has interconnected notches corresponding to a portion of the side and end of the second electrode 310 to form the second water inlet 321. The area of ​​the first water inlet 221 corresponding to the side of the first electrode 210 is referred to as the first side water inlet, and the area of ​​the second water inlet 321 corresponding to the side of the second electrode 310 is referred to as the second side water inlet. Preferably, the first side inlet is positioned away from the second side inlet, which can reduce the probability that a longer conductor entering the sewage tank 100 with the sewage will connect the two electrodes.

[0110] See Figures 7 to 10In some embodiments, a second protective sleeve 320 is provided around the second electrode 310. The second protective sleeve 320 has a second water inlet 321 for exposing a portion of the second electrode 310. The second water inlet 321 is located on the side and end of the second electrode 310. A first connecting portion 331 extends into the second protective sleeve 320 through the second water inlet 321 and is installed at the end of the second electrode 310. Specifically, the first connecting portion 331 extends into the second protective sleeve 320 through the second water inlet 321 and is installed at the bottom end of the second electrode 310, covering the bottom end of the second electrode 310. A portion of the side of the second electrode 310 is exposed through the second water inlet 321, allowing wastewater to flow through the second water inlet 321 and contact the side of the second electrode 310. A portion of the side and bottom of the first electrode 210 are exposed through the first water inlet 221, allowing wastewater to flow through the first water inlet 221 and contact the side and bottom of the first electrode 210.

[0111] See Figure 7 and Figure 8 ,as well as Figure 11 In some embodiments, the water level detection assembly further includes a third electrode 410 and a fourth electrode 510 spaced apart circumferentially along the wastewater tank 100. The third electrode 410 and the fourth electrode 510 have different polarities and are positioned along the rotation axis O. Figure 1 and Figure 23 As shown in the diagram, the distance between the detection contact of the third electrode 410 or the detection contact of the fourth electrode 510 and the air outlet 1211 of the sewage tank is greater than the distance between the detection contact of the first electrode 210 or the detection contact of the second electrode 310 and the air outlet 1211 of the sewage tank, and when both the detection contacts of the third electrode 410 and the fourth electrode 510 are immersed in water, the third electrode 410 and the fourth electrode 510 are connected.

[0112] Specifically, one of the third electrode 410 and the fourth electrode 510 is a positive electrode, and the other is a negative electrode. As mentioned earlier, the detection contacts of each electrode are located at their bottom ends. When the sewage tank 100 is in an upright or tilted state, the bottom ends of the third electrode 410 and the fourth electrode 510 are lower than the bottom ends of the first electrode 210 and the second electrode 310. In the upright and tilted states, the bottom ends of the first electrode 210 and the second electrode 310 are at a higher position. If the water level reaches the suction range of the motor, the detection contacts of the first electrode 210 and the second electrode 310 cannot be immersed in the water because the water level cannot reach the height of the bottom ends of the first electrode 210 and the second electrode 310. The circuit is established by the simultaneous immersion of the detection contacts of the third electrode 410 and the fourth electrode 510 in the water. In other words, detection is achieved using the third electrode 410 and the fourth electrode 510 in the upright and tilted positions, and using the first electrode 210 and the second electrode 310 in the reclining position. This allows for relatively accurate and timely detection of the water level reaching the motor's suction range in all operating states. Of course, detection can also be achieved using the third electrode 410 and the fourth electrode 510 in the reclining position.

[0113] Similar to the aforementioned embodiments, in some embodiments, when the proportion of the conduction time of the third electrode 410 and the fourth electrode 510 within a preset time period exceeds a first threshold, the cleaning device enters a protection mode and the motor stops working. For details, please refer to the explanation of the first electrode 210 and the second electrode 310 described above; further elaboration will not be repeated here.

[0114] Similarly, in some embodiments, when the number of times the third electrode 410 and the fourth electrode 510 are switched on exceeds a second threshold within a preset time period, the cleaning device enters a protection mode and the motor stops working.

[0115] Specifically, the third electrode 410 is fitted with a third protective sleeve 420, and a third water inlet 421 is provided on the third protective sleeve 420. The fourth electrode 510 is fitted with a fourth protective sleeve 520, and a fourth water inlet 521 is provided on the fourth protective sleeve 520. The specific structure of the protective sleeve and water inlet in this embodiment is similar to the structure of the first protective sleeve 220 and the first water inlet 221 described above, and will not be repeated here.

[0116] See Figures 6 to 8 In some embodiments, the first electrode 210, the second electrode 310, the third electrode 410, and the fourth electrode 510 all include mounting ends for connection to the wastewater tank 100; perpendicular to the axis of rotation O ( Figure 1 and Figure 23In the axial direction shown, the distance between the mounting end of the first electrode 210 or the mounting end of the second electrode 310 and the sewage tank outlet 1211 is greater than the distance between the mounting end of the third electrode 410 or the mounting end of the fourth electrode 510 and the sewage tank outlet 1211. Specifically, the axial direction perpendicular to the rotation axis O is the radial direction of the sewage tank 100. In both the upright and tilted states of the cleaning equipment, the mounting ends of the first electrode 210, the second electrode 310, the third electrode 410, and the fourth electrode 510 are their respective tops. In the radial direction of the sewage tank 100, the distance between the tops of the first electrode 210 and the second electrode 310 and the sewage tank outlet 1211 is greater than the distance between the tops of the third electrode 410 and the fourth electrode 510 and the sewage tank outlet 1211.

[0117] See Figures 6 to 8 Furthermore, in some embodiments, the first electrode 210, the second electrode 310, the third electrode 410, and the fourth electrode 510 each include a working end disposed opposite to their mounting end, and the detection contacts of the first electrode 210, the second electrode 310, the third electrode 410, and the fourth electrode 510 are located at their respective working ends; perpendicular to the rotation axis O ( Figure 1 and Figure 23 In the axial direction shown, the distance between the mounting end of the first electrode 210 or the mounting end of the second electrode 310 and the sewage tank outlet 1211 is greater than the distance between the mounting end of the third electrode 410 or the mounting end of the fourth electrode 510 and the sewage tank outlet 1211. Specifically, the first electrode 210, the second electrode 310, the third electrode 410, and the fourth electrode 510 are all columnar, with their respective working ends located in their respective bottom regions. In the radial direction of the sewage tank 100, the distance between the bottom ends of the first electrode 210 and the second electrode 310 and the sewage tank outlet 1211 is greater than the distance between the bottom ends of the third electrode 410 and the fourth electrode 510 and the sewage tank outlet 1211. In other embodiments, the electrodes may also be of other shapes, such as "L" shapes.

[0118] See Figure 7 and Figure 8 In some embodiments, the third electrode 410 and the fourth electrode 510 are respectively disposed at both ends of the sewage tank 100 in the radial direction, and along the rotation axis O. Figure 1 and Figure 23As shown in the diagram, the detection contacts of the third electrode 410 and the fourth electrode 510 are equidistant from the outlet 1211 of the wastewater tank. Specifically, the detection contacts of the third electrode 410 and the fourth electrode 510 are at the same height from the area to be cleaned, i.e., the ground. This embodiment is suitable for direct-push cleaning where the floor brush assembly 20 remains in contact with the ground in both upright and tilted states, with only the body 10 rotating up and down to change the tilt angle. In this case, the third electrode 410 and the fourth electrode 510 are respectively located at the two ends of the radial direction of the wastewater tank 100, with the maximum distance between them, which reduces the probability of a longer conductor entering the wastewater tank 100 with the wastewater connecting the two electrodes.

[0119] As mentioned above, the method of providing second electrodes 310 on both sides of the first electrode 210 in this application is applicable not only to rotation in a lying position when cleaning narrow spaces, but also to rotation in an inclined position during normal cleaning. The difference is that the detection contact of the electrode in the inclined position needs to extend below the electrode in the lying position to ensure that the electrode is not too short and the detection contact of the electrode is not too far from the water surface in the inclined position.

[0120] Specifically, in some embodiments, along the circumference of the sewage tank 100, fourth electrodes 510 are spaced apart on both sides of the third electrode 410, and the sewage tank 100 rotates around the axis O ( Figure 1 and Figure 23 As shown, during the rotation to the first or second limit position, when both the detection contact of the third electrode 410 and the detection contact of at least one fourth electrode 510 are immersed in water, the third electrode 410 and the fourth electrode 510 are connected. The three electrodes in this embodiment are similar to those used with the first electrode 210 and two second electrodes 310; for specific details, refer to the method for setting the first electrode 210 and two second electrodes 310. This embodiment is applicable to cleaning methods where the cleaning device is rotated a certain angle around the rotation axis O while in an inclined state.

[0121] As mentioned earlier, the cooperation of the first electrode 210 and the two second electrodes 310 allows for relatively timely detection during rotation in a lying position. In this embodiment, the added third electrode 410 and two fourth electrodes 510 can play a similar role during rotation in an inclined position. Thus, detection can be performed relatively quickly during rotation in both inclined and lying positions.

[0122] See Figures 3 to 6 ,as well as Figure 12In some embodiments, the wastewater tank 100 includes a tank body 110 and a tank cover 120. The tank cover 120 is installed at the top opening of the tank body 110, and a receiving cavity 140 for containing wastewater is formed between the tank cover 120 and the tank body 110. A first electrode 210 and a second electrode 310 are installed on the tank cover 120, and the first electrode 210 and the second electrode 310 extend downward from the tank cover 120 into the receiving cavity 140. Specifically, the tank body 110 is a hollow cylinder with an open top. The tank body 110 includes a bottom wall 111 and a side wall 112. A hollow wastewater pipe 130 extends upward from the inner side of the bottom wall 111 of the tank body 110. The top and bottom of the wastewater pipe 130 are both open. The opening at the bottom of the wastewater pipe 130 forms a gas-liquid mixture inlet 1111 on the bottom wall 111 of the tank body 110. The bottom wall 111, side wall 112, sewage pipe 130, and the bottom end of the cover 120 together define a receiving cavity 140 for containing sewage. The cover 120 includes a cover body 121 and a cover shell 122. The cover shell 122 covers the cover body 121, and the cover body 121 is detachably installed at the top opening of the tank 110. By removing the sewage tank 100 and the cover 120 from the top opening of the tank 110, the sewage stored inside can be poured out. The cover body 121 is provided with a sewage tank outlet 1211 communicating with the receiving cavity 140, and the top of the cover shell 122 is provided with an air outlet 1221 communicating with the sewage tank outlet 1211. When the motor performs suction, wastewater mixed with dust and debris flows into the wastewater pipe 130 from the gas-liquid mixture inlet 1111, and is sprayed into the receiving cavity 140 from the top opening of the wastewater pipe 130. The wastewater flows downward and is stored in the receiving cavity 140. The airflow flows into the wastewater tank outlet 1211, flows out of the wastewater tank 100 through the airflow outlet 1221, flows into the motor, and is finally discharged from the motor outlet. The first electrode 210, the second electrode 310, the third electrode 410, and the fourth electrode 510 are all installed on the tank cover 120 and extend downward into the receiving cavity 140 from the tank cover 120.

[0123] In some embodiments, a first sensing connector 620 and a second sensing connector 630 are mounted on the cover 120. The first sensing connector 620 and the second sensing connector 630 have opposite polarities and both are exposed outside the cover 120. The positive polarity components of the first electrode 210 and the second electrode 310 are electrically connected to the positive polarity components of the first sensing connector 620 and the second sensing connector 630, and the negative polarity components of the first electrode 210 and the second electrode 310 are electrically connected to the negative polarity components of the first sensing connector 620 and the second sensing connector 630. Specifically, a mounting bracket 610 is fixedly connected to the cover body 121, and the first sensing connector 620, the second sensing connector 630, the first electrode 210, and the second electrode 310 are all mounted on the mounting bracket 610. If the first sensing connector 620 is positive and the second sensing connector 630 is negative, then the positive components of the first electrode 210 and the second electrode 310 are electrically connected to the first sensing connector 620, and the negative components of the first electrode 210 and the second electrode 310 are electrically connected to the second sensing connector 630. Similarly, the positive components of the third electrode 410 and the fourth electrode 510 are electrically connected to the first sensing connector 620, and the negative components of the third electrode 410 and the fourth electrode 510 are electrically connected to the second sensing connector 630. The first sensing connector 620 and the second sensing connector 630 are electrically connected to the power supply and controller of the cleaning equipment. A through hole is provided on the top surface of the cover 122, through which the first sensing connector 620 and the second sensing connector 630 extend and protrude from the cover 120, facilitating electrical connection to the power supply and controller of the cleaning equipment.

[0124] In some embodiments, a filter assembly 700 is also installed inside the housing 110. The filter assembly 700 includes a filter screen 710, which can filter particulate matter or lumps in the sewage, leaving such objects inside the filter assembly 700. The sewage flows downward through the filter assembly 700 into the lower half of the receiving cavity 140. When emptying, the filter assembly 700 can be removed from the housing 110, and the sewage and the particulate matter or lumps contained in the filter assembly 700 can be poured out separately to prevent the particulate matter or lumps from clogging the sewer.

[0125] In some embodiments, a downwardly extending baffle 810 is connected to the cover 120. The baffle 810 is an open-ended, hollow structure with an open bottom, and a baffle cavity 820 is formed inside the baffle 810. The baffle 810 can guide the sewage sprayed from the top opening of the sewage pipe 130 to the inner wall of the baffle 810, causing it to flow downwards to prevent the sewage from splashing around inside the tank 100. In addition, the airflow drawn into the tank 100 from the sewage pipe 130 needs to flow downwards first, then radially outwards along the sewage tank 100, bypassing the baffle 810, and then upwards to reach the sewage tank outlet 1211 on the cover body 121, thereby extending the flow path of the gas-liquid mixture and improving the gas-liquid separation effect.

[0126] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0127] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A cleaning device for cleaning an area to be cleaned, characterized in that, include: The machine body (10) is equipped with a motor and a sewage tank (100). The motor is used to provide suction force. The sewage tank (100) includes a water level detection component and a sewage tank outlet (1211) connected to the air inlet of the motor. Airflow can flow out of the sewage tank (100) through the sewage tank outlet (1211). The water level detection component includes a first electrode (210) and two second electrodes (310). Along the circumference of the sewage tank (100), a second electrode (310) is provided on each side of the first electrode (210) at intervals. The polarities of the first electrode (210) and the second electrode (310) are different. With the axis of the machine body (10) as the axis of rotation, the machine body (10) can rotate around the axis of rotation to adjust the orientation of the sewage tank (100); during the rotation of the machine body (10) around the axis of rotation toward the first extreme position, when the detection contact of the first electrode (210) and at least one detection contact of the second electrode (310) are both immersed in water, the first electrode (210) and the second electrode (310) are connected; during the rotation of the machine body (10) around the axis of rotation toward the second extreme position, when the detection contact of the first electrode (210) and at least one detection contact of the second electrode (310) are both immersed in water, the first electrode (210) and the second electrode (310) are connected.

2. The cleaning equipment according to claim 1, characterized in that, When the proportion of the conduction time of the first electrode (210) and the second electrode (310) within a preset time period is greater than a first threshold, the cleaning device enters a protection mode and the motor stops working.

3. The cleaning equipment according to claim 1, characterized in that, If the number of times the first electrode (210) and the second electrode (310) are connected within a preset time period is greater than a second threshold, the cleaning device enters a protection mode and the motor stops working.

4. The cleaning equipment according to claim 1, characterized in that, The first electrode (210) and the two second electrodes (310) are located on the opposite side of the sewage tank outlet (1211) of the sewage tank (100) in the radial direction of the sewage tank (100).

5. The cleaning equipment according to claim 1, characterized in that, When the sewage tank (100) is in a lying position, during the process of the sewage tank (100) rotating around the rotation axis toward the first limit position or the second limit position, when the detection contact of the first electrode (210) and at least one detection contact of the second electrode (310) are both immersed in water, the first electrode (210) and the second electrode (310) are connected.

6. The cleaning equipment according to claim 5, characterized in that, Along the circumference of the sewage tank (100), two second electrodes (310) are symmetrically distributed on both sides of the first electrode (210); In the lying-down state, when the sewage tank (100) rotates around the rotation axis until the distance between the sewage tank outlet (1211) and the area to be cleaned is at its maximum, when the detection contact of the first electrode (210) and the detection contacts of the two second electrodes (310) are both immersed in water, the first electrode (210) and the second electrode (310) are connected. When the wastewater tank (100) rotates around the rotation axis to be in the first limit position or the second limit position, when the detection contact of the first electrode (210) and the detection contact of one of the second electrodes (310) are both immersed in water, the first electrode (210) and the second electrode (310) are connected.

7. The cleaning equipment according to claim 1, characterized in that, In a plane perpendicular to the axis of rotation, with the projection of the axis of rotation as the center, the angle α between the line connecting the projection center of each of the two second electrodes (310) and the projection of the axis of rotation is in the range of 60°≤α≤120°.

8. The cleaning equipment according to claim 6, characterized in that, The first extreme position and the second extreme position are arranged at intervals along the circumference of the sewage tank (100), and the range between the first extreme position and the second extreme position is the rotation range of the body (10); When the body (10) rotates to the point where the sewage tank (100) is at the center of the first and second extreme positions in the circumferential direction, the distance between the sewage tank outlet (1211) and the area to be cleaned is at its maximum.

9. The cleaning equipment according to claim 1, characterized in that, Along the circumference of the sewage tank (100), the first electrode (210) and the second electrode (310) are arranged alternately at intervals.

10. The cleaning equipment according to claim 9, characterized in that, The water level detection component also includes another first electrode (210), the distance between the other first electrode (210) and the sewage tank outlet (1211) is less than the distance between the first electrode (210) and the sewage tank outlet (1211); during the rotation of the body (10) around the rotation axis from the second extreme position to the third extreme position, when the detection contact of the other first electrode (210) and the detection contact of at least one second electrode (310) are both immersed in water, the other first electrode (210) and the second electrode (310) are connected, wherein, along the circumference of the sewage tank (100), the second extreme position is located between the first extreme position and the third extreme position.

11. The cleaning equipment according to claim 1, characterized in that, A connecting piece (330) is electrically connected to the second electrode (310), and the outer end of the connecting piece (330) extends to the outside of the second electrode (310) along the radial direction of the sewage tank (100).

12. The cleaning equipment according to claim 11, characterized in that, The connecting piece (330) includes a first connecting portion (331) and a second connecting portion (332), the first connecting portion (331) and the second connecting portion (332) are bent relative to each other, the first connecting portion (331) is connected to the second electrode (310), and the second connecting portion (332) extends to the outside of the second electrode (310) along the radial direction.

13. The cleaning equipment according to claim 1 or 11, characterized in that, The first electrode (210) is covered with a first protective sleeve (220), and the first protective sleeve (220) is provided with a first water inlet (221) for exposing a part of the first electrode (210), and / or, the second electrode (310) is covered with a second protective sleeve (320), and the second protective sleeve (320) is provided with a second water inlet (321) for exposing a part of the second electrode (310).

14. The cleaning equipment according to claim 13, characterized in that, If the first electrode (210) is covered with the first protective sleeve (220), the first water inlet (221) is located on the side and end of the first electrode (210); if the second electrode (310) is covered with the second protective sleeve (320), the second water inlet (321) is located on the side and end of the second electrode (310).

15. The cleaning equipment according to claim 12, characterized in that, The second electrode (310) is covered with a second protective sleeve (320). The second protective sleeve (320) is provided with a second water inlet (321) for exposing a part of the second electrode (310). The second water inlet (321) is located on the side and end of the second electrode (310). The first connecting part (331) extends into the second protective sleeve (320) through the second water inlet (321) and is installed at the end of the second electrode (310).

16. The cleaning equipment according to claim 2 or 3, characterized in that, The water level detection component also includes a third electrode (410) and a fourth electrode (510) arranged circumferentially around the sewage tank (100). The third electrode (410) and the fourth electrode (510) have different polarities. Along the axial direction of the rotation axis, the distance between the detection contact of the third electrode (410) or the detection contact of the fourth electrode (510) and the air outlet (1211) of the sewage tank is greater than the distance between the detection contact of the first electrode (210) or the detection contact of the second electrode (310) and the air outlet (1211) of the sewage tank. When the detection contact of the third electrode (410) and the detection contact of the fourth electrode (510) are both immersed in water, the third electrode (410) and the fourth electrode (510) are connected.

17. The cleaning equipment according to claim 16, characterized in that, When the conduction time of the third electrode (410) and the fourth electrode (510) within the preset time period is greater than the first threshold, the cleaning device enters the protection mode and the motor stops working.

18. The cleaning equipment according to claim 16, characterized in that, If the number of times the third electrode (410) and the fourth electrode (510) are connected within the preset time period is greater than the second threshold, the cleaning device enters the protection mode and the motor stops working.

19. The cleaning equipment according to claim 16, characterized in that, The first electrode (210), the second electrode (310), the third electrode (410) and the fourth electrode (510) all include a mounting end for connecting to the sewage tank (100); In the axial direction perpendicular to the axis of rotation, the distance between the mounting end of the first electrode (210) or the mounting end of the second electrode (310) and the air outlet (1211) of the sewage tank is greater than the distance between the mounting end of the third electrode (410) or the mounting end of the fourth electrode (510) and the air outlet (1211) of the sewage tank.

20. The cleaning equipment according to claim 19, characterized in that, The first electrode (210), the second electrode (310), the third electrode (410) and the fourth electrode (510) each include a working end disposed opposite to their own mounting end, and the detection contact of the first electrode (210), the second electrode (310), the third electrode (410) and the fourth electrode (510) is located at their respective working ends; In the axial direction perpendicular to the axis of rotation, the distance between the mounting end of the first electrode (210) or the mounting end of the second electrode (310) and the air outlet (1211) of the sewage tank is greater than the distance between the mounting end of the third electrode (410) or the mounting end of the fourth electrode (510) and the air outlet (1211) of the sewage tank.

21. The cleaning equipment according to claim 16, characterized in that, The third electrode (410) and the fourth electrode (510) are respectively disposed at both ends of the radial direction of the sewage tank (100), and along the axial direction of the rotation axis, the detection contact of the third electrode (410) and the detection contact of the fourth electrode (510) are equidistant from the air outlet (1211) of the sewage tank.

22. The cleaning equipment according to claim 16, characterized in that, Along the circumference of the sewage tank (100), the fourth electrode (510) is provided on both sides of the third electrode (410) at intervals. When the sewage tank (100) rotates around the rotation axis to the first limit position or the second limit position, when the detection contact of the third electrode (410) and at least one detection contact of the fourth electrode (510) are immersed in water, the third electrode (410) and the fourth electrode (510) are connected.

23. The cleaning equipment according to claim 1, characterized in that, The sewage tank (100) includes a tank body (110) and a tank cover (120). The tank cover (120) is installed at the top opening of the tank body (110). A receiving cavity (140) for receiving sewage is formed between the tank cover (120) and the tank body (110). The first electrode (210) and the second electrode (310) are installed on the tank cover (120), and the first electrode (210) and the second electrode (310) extend downward from the tank cover (120) into the receiving cavity (140).

24. The cleaning equipment according to claim 23, characterized in that, The cover (120) is equipped with a first induction connector (620) and a second induction connector (630). The first induction connector (620) and the second induction connector (630) have opposite polarities and both are exposed outside the cover (120). The positive polarity components of the first electrode (210) and the second electrode (310) are electrically connected to the positive polarity components of the first induction connector (620) and the second induction connector (630). The negative polarity components of the first electrode (210) and the second electrode (310) are electrically connected to the negative polarity components of the first induction connector (620) and the second induction connector (630).

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