Cleaning device, water suction control method and readable storage medium

Abstract

Disclosed in the present application are a cleaning device, a water suction control method and a readable storage medium. The cleaning device comprises a fan (120), an air intake part (200), a detection component and a controller, wherein the fan (120) can produce an inflow of air, the air intake part (200) defines a ventilation chamber (210), and the inflow of air flows towards the fan (120) via the ventilation chamber (210); the detection component is used for detecting the presence of liquid in the ventilation chamber (210); and the controller is electrically connected to the detection assembly, and the controller is configured to, in response to the presence of liquid in the ventilation chamber (210), adjust the cleaning device to a protected state.

Description

Cleaning instrument, water absorption control method and readable storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 202311152665.X, filed on September 7, 2023, entitled “Cleaning instrument, water absorption control method and readable storage medium,” the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of household appliances, and in particular to a cleaning instrument, a water absorption control method, and a readable storage medium. Background Art

[0004] Vacuum cleaners are easy to use and can reduce the user's labor intensity when cleaning, making them increasingly popular in the market. Vacuum cleaners are divided into dry vacuum cleaners, wet vacuum cleaners, and wet / dry vacuum cleaners. Dry vacuum cleaners are commonly used to absorb solid waste such as hair, dust, and debris. Dry vacuum cleaners have the advantages of wide application scenarios and high cost-effectiveness, and are favored by many users. However, in the application scenarios of dry vacuum cleaners, water may occasionally be spilled on the ground. Some users use them when there is water on the ground, causing water to be sucked into the vacuum cleaner. If the sucked-in water flows onto components such as the fan and the electronic control panel, it can cause the vacuum cleaner to malfunction.

[0005] In the prior art, in order to protect the safety of key components, methods of improving the waterproof performance of key components are often adopted. For example, by optimizing the internal layout of the vacuum cleaner, the key components are placed in an independent sealed chamber to isolate the entry of water, or by adding sealing rings, applying waterproof layers, etc. to reduce the probability of water seeping into the key components. The above-mentioned waterproof structures will occupy a large amount of internal space of the vacuum cleaner. Moreover, although the waterproof performance is improved by isolating key components, covering key components, etc., it will cause the heat dissipation conditions of the key components to deteriorate, thereby affecting their performance.

[0006] Summary of the Invention

[0007] The present application aims to at least partially solve one of the technical problems existing in the prior art. To this end, the present application proposes a cleaning instrument, a water absorption control method, and a readable storage medium.

[0008] According to the first aspect of the present application, a cleaning instrument includes an air blower, an air inlet member, a detection component and a controller, wherein the air blower is capable of forming an air inlet, the air inlet member defines a ventilation cavity, and the air inlet flows to the air blower via the ventilation cavity; the detection component is used to detect whether there is liquid in the ventilation cavity, the controller is electrically connected to the detection component, and the controller is configured to: in response to the presence of liquid in the ventilation cavity, adjust the cleaning instrument to a protective state.

[0009] According to some embodiments of the present application, the detection assembly includes a first electrode and a second electrode spaced apart from each other, the first electrode and the second electrode protrudingly connected to the cavity wall; or a mounting groove is provided on the cavity wall, and the first electrode and the second electrode are at least partially located in the mounting groove;

[0010] In which, in response to the capacitance value between the first electrode and the second electrode being within a set range indicating the presence of liquid on the cavity wall, the controller adjusts the cleaning instrument to the protective state; or, in response to the first electrode and the second electrode being conductive, the controller adjusts the cleaning instrument to the protective state.

[0011] According to some embodiments of the present application, the cleaning instrument includes a body, the air inlet piece is detachably connected to the body, the first electrode and the second electrode are arranged on the air inlet piece, and the body is provided with a third electrode and a fourth electrode electrically connected to the controller. When the body is connected to the air inlet piece, the first electrode is electrically connected to the third electrode, and the second electrode is electrically connected to the fourth electrode.

[0012] According to some embodiments of the present application, there are multiple first electrodes, and the detection component further includes a fifth electrode provided on the air inlet member, each of the first electrodes is electrically connected to the fifth electrode, and when the body is connected to the air inlet member, each of the first electrodes is electrically connected to the third electrode through the fifth electrode;

[0013] And / or, there are multiple second electrodes, and the detection component also includes a sixth electrode arranged on the air inlet member, each second electrode is electrically connected to the sixth electrode, and when the fuselage is connected to the air inlet member, each second electrode is electrically connected to the fourth electrode through the sixth electrode.

[0014] According to some embodiments of the present application, the cleaning instrument includes a body, the air inlet member is detachably connected to the body, and when the cavity wall is provided with the mounting groove, the mounting groove passes through the cavity wall;

[0015] The first electrode is arranged on the body, and when the body is connected to the air inlet member, the first electrode is passed through the mounting groove; and / or the second electrode is arranged on the body, and when the body is connected to the air inlet member, the second electrode is passed through the mounting groove.

[0016] According to some embodiments of the present application, the relative position relationship between the first electrode and the second electrode is any one of the following:

[0017] The first electrode is configured in a ring shape, and the first electrode is wound around the second electrode;

[0018] There are a plurality of first electrodes, and the plurality of first electrodes are wound around the second electrode.

[0019] According to some embodiments of the present application, the first electrode and the second electrode are arranged side by side along the circumference of the air inlet member and extend along the air inlet direction of the air inlet member, or the first electrode and the second electrode are arranged side by side along the air inlet direction and extend along the circumference of the air inlet member.

[0020] According to some embodiments of the present application, the detection component is arranged at an end of the air inlet member away from the fan.

[0021] According to some embodiments of the present application, when the cleaning instrument is adjusted to the protective state, the suction wind speed of the fan decreases; or, the cleaning instrument further includes an alarm, and when the cleaning instrument is adjusted to the protective state, the alarm issues a warning message; or, the cleaning instrument further includes a movable baffle, which is movably connected to the air inlet part, and when the cleaning instrument is adjusted to the protective state, the movable baffle closes the ventilation cavity.

[0022] According to some embodiments of the present application, the detection assembly includes at least three first electrodes spaced apart from each other, wherein the first electrodes protrude and are connected to the cavity wall of the ventilation cavity, or the cavity wall is provided with a mounting groove, and the first electrodes are at least partially located in the mounting groove;

[0023] In which, in response to the capacitance value of any two of the first electrodes reaching a preset value, the controller adjusts the cleaning instrument to the protection state; or, in response to any two of the first electrodes being turned on, the controller adjusts the cleaning instrument to the protection state.

[0024] According to some embodiments of the present application, the cleaning instrument includes a body, the air inlet piece is detachably connected to the body, each first electrode is arranged on the air inlet piece, and a plurality of third electrodes electrically connected to the controller are arranged on the body. When the body is connected to the air inlet piece, each first electrode is electrically connected to the third electrode.

[0025] According to some embodiments of the present application, the cleaning instrument includes a body, the air inlet piece is detachably connected to the body, each first electrode is arranged on the body, the mounting groove passes through the cavity wall, and when the body is connected to the air inlet piece, the first electrode is passed through the mounting groove.

[0026] According to some embodiments of the present application, a functional part for cleaning or filtering is provided in the ventilation cavity, the detection component is used to detect whether there is liquid on the functional part, and the controller is configured to: in response to the presence of liquid on the functional part, adjust the cleaning instrument to the protective state.

[0027] According to the second embodiment of the present application, the water absorption control method includes the following steps:

[0028] Acquiring electrical parameters of the detection component disposed in the air inlet member, wherein the electrical parameters are used to characterize whether liquid exists in the ventilation cavity;

[0029] If the electrical parameter is within a set range indicating the presence of liquid in the ventilation cavity, the controller issues a first instruction;

[0030] In response to the first instruction, the cleaning instrument is adjusted to a protection state.

[0031] According to some embodiments of the present application, the protection state includes any one of the following actions or a combination thereof:

[0032] The suction wind speed of the fan decreases;

[0033] The alarm of the cleaning instrument sends out a warning message;

[0034] The movable stopper of the cleaning instrument extends out to close the ventilation cavity of the air inlet member.

[0035] According to some embodiments of the present application, after adjusting the cleaning instrument to the protection state in response to the first instruction, the following steps are further included:

[0036] Obtaining electrical parameters of the detection component;

[0037] If the electrical parameter is outside the set range and remains for a first time, the controller issues a second instruction, wherein the first time is greater than or equal to a set value;

[0038] In response to the second instruction, the cleaning instrument is adjusted to a working state.

[0039] According to the third aspect of the present application, the readable storage medium stores a computer program, and when the computer program is executed by a controller, the water absorption control method according to any one of the above embodiments is implemented.

[0040] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present application is further described below with reference to the accompanying drawings and embodiments, wherein:

[0042] FIG1 is a physical diagram of a cleaning apparatus according to an embodiment of the present application;

[0043] FIG2 is a simplified schematic diagram of the structure of a cleaning apparatus according to an embodiment of the present application;

[0044] FIG3 is a simplified schematic diagram of the structure of a cleaning apparatus according to another embodiment of the present application;

[0045] FIG4 is an enlarged schematic diagram of area A in FIG2 ;

[0046] FIG5 is a schematic structural diagram of another embodiment different from FIG4 ;

[0047] FIG6 is a schematic structural diagram of another embodiment different from FIG4 ;

[0048] FIG7 is a schematic structural diagram of another embodiment different from FIG4 ;

[0049] FIG8 is a schematic structural diagram of a first electrode and a second electrode according to an embodiment of the present application;

[0050] FIG9 is a schematic structural diagram of a first electrode and a second electrode according to another embodiment of the present application;

[0051] FIG10 is a schematic structural diagram of a first electrode and a second electrode according to another embodiment of the present application;

[0052] FIG11 is a schematic structural diagram of a first electrode and a second electrode according to another embodiment of the present application;

[0053] FIG12 is an enlarged cross-sectional view of the embodiment in FIG11 ;

[0054] FIG13 is a schematic structural diagram of a first electrode and a second electrode according to another embodiment of the present application;

[0055] FIG14 is a flowchart of a water absorption control method according to an embodiment of the present application; and

[0056] FIG15 is a flow chart of steps of a water absorption control method according to another embodiment of the present application.

[0057] Reference numerals: body 100 ; controller 110 ; fan 120 ; hand-held handle 130 ; air inlet member 200 ; ventilation cavity 210 ; mounting slot 220 ; dust cup 230 ; air inlet pipe 240 ; first electrode 300 ; second electrode 400 ; third electrode 500 ; fifth electrode 600 ; communication cable 700 . DETAILED DESCRIPTION

[0058] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0059] In the description of this application, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0060] In the description of this application, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0061] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0062] In the description of this application, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0063] The first embodiment of the present application proposes a cleaning instrument, which can be a vacuum cleaner, a sweeping robot, etc. The vacuum cleaner can be a rechargeable push-rod type, a handheld type, a vertical type, a horizontal type, a bucket type, etc. The vacuum cleaner shown in FIG1 is a handheld vacuum cleaner, which has a handheld handle 130, an exposed fan 120, and a dust cup 230 detachably connected to the body 100. As shown in FIG2, a controller 110 is provided inside the body 100 of the cleaning instrument, and the fan 120 is connected to the air inlet 200. The fan 120 can form wind that moves toward the fan 120 through the air inlet 200 to absorb solid waste such as dust, debris, and hair on the ground. It should be explained that in the handheld vacuum cleaner shown in Figure 1, the air inlet part 200 includes a dust cup 230 and an air inlet pipe 240 connected to the peripheral wall of the dust cup 230. The airflow carries dust and other garbage into the vacuum cleaner from the air inlet pipe 240, and flows into the dust cup 230 to separate the debris in the airflow, and then is dispersed by the fan 120.

[0064] However, there is occasionally water spilled on the ground. If the cleaning instrument sucks the water into the fan 120 and penetrates into key components such as the controller 110 in the body 100 through the fan 120, it may cause the cleaning instrument to malfunction.

[0065] The existing technology adopts the method of improving the waterproof performance of key components to reduce the probability of water absorption failure of the cleaning instrument, but this method often requires major improvements and optimizations to the internal structure of the cleaning instrument. For example, a waterproof sealing structure is added to the fan 120 and the air inlet 200 to prevent water from entering the fan 120. However, the setting of the waterproof sealing structure will block the air inlet duct and reduce the air inlet speed, thereby affecting the cleaning effect of the cleaning instrument. Alternatively, by improving the internal distribution of the body 100 of the cleaning instrument, the chamber containing key components such as the fan 120 and the controller 110 can be sealed as much as possible to reduce the possibility of water entering the chamber. However, on the one hand, the fan 120 needs to be connected to the air inlet 200 and cannot be completely sealed. This waterproof design has little protective effect on the fan 120. On the other hand, placing the controller 110 in the sealed chamber, although the waterproof performance is guaranteed, increases the difficulty of connecting each cable, which is not conducive to the wiring assembly of the cleaning instrument; and, since there is no air circulation in the sealed chamber, the heat dissipation of the controller 110 cannot be guaranteed, and long-term operation in a high-temperature environment will reduce the life of the controller 110.

[0066] To this end, in an embodiment of the present application, a detection component is provided to increase the water absorption detection capability of the cleaning instrument, so that after absorbing water, the cleaning instrument can quickly respond and switch to a protective state, and take protective measures, thereby reducing the probability of water flowing into key components such as the controller 110 or the fan 120. Specifically, the cleaning instrument includes an air inlet 200, a detection component, and a controller 110. It can be understood that the air inlet 200 can be a dust cup 230, an air inlet pipe 240, and the air inlet 200 is often hollow and tubular, thereby defining a ventilation cavity 210. The ventilation cavity 210 is connected to the exhaust port of the fan 120, so that when the fan 120 is working, air is formed in the ventilation cavity 210 toward the fan 120.

[0067] It should be clarified that the fan 120 is a component that forms the air intake, and the air inlet member 200 is a component that accommodates the passage of the incoming air. Therefore, in the embodiment shown in FIG3 , although the air inlet member 200 forms an integral structure with the housing of the fan 120, the housing before the fan of the fan 120 can be considered as the air inlet member 200. Alternatively, the fuselage 100 is provided with a channel (not shown in the figure) for connecting to the air inlet member 200, and the fan 120 is provided at the other end of the channel. In this case, the function of the channel is also to accommodate the passage of wind, and it can also be understood as a part of the air inlet member 200. The electrodes of the detection component can be provided in the channel.

[0068] As shown in Figure 1, the working principle of the cleaning instrument is briefly explained by taking the cleaning instrument as a vacuum cleaner and the air inlet part 200 as the dust cup 230 as an example: when the cleaning instrument is turned on, the dust, hair and other garbage on the ground are adsorbed and enter the dust cup 230 through the air inlet pipe 240 of the cleaning instrument. A spiral air inlet is formed in the dust cup 230, causing the wind to carry the garbage and rotate at high speed in the dust cup 230, and generate centrifugal force during the rotation. Since the relative density of dust, hair and other garbage is greater than that of gas, the centrifugal force they are subjected to is greater, and they are thrown out of the cyclone during the rotation and contact the inner wall of the dust cup 230, and then gather at the bottom of the dust cup 230 under the action of gravity.

[0069] It is understandable that when the vacuum cleaner draws in water, the water that first enters the dust cup 230 is swirled and broken up, then thrown out onto the inner wall of the dust cup 230, where it adheres to the inner wall of the dust cup 230 to form a water film. If the vacuum cleaner continues to draw in water, as more and more water is thrown out onto the inner wall of the dust cup 230, the water subsequently thrown onto the inner wall of the dust cup 230 cannot directly contact the inner wall of the dust cup 230 and has weak adhesion. Consequently, under the force of the spiral airflow, the water gradually rises along the inner wall of the dust cup 230 until it enters the fan 120, causing a short circuit in the fan 120.

[0070] To address this phenomenon, a detection assembly is provided in the air inlet member 200 of the first embodiment of the present application to detect whether liquid is present in the ventilation cavity 210. Specifically, referring to Figures 2 to 8 , the detection assembly includes a first electrode 300 and a second electrode 400 (the second electrode 400 is shown in Figure 8 ), and the first electrode 300 and the second electrode 400 are provided to protrude from, be flush with, or be recessed from the inner wall of the air inlet member 200.

[0071] The first electrode 300 and the second electrode 400 can be connected to the wall of the ventilation cavity 210, thereby protruding from the inner wall of the ventilation cavity 210 (as shown in FIG5 ). Alternatively, a mounting groove 220 can be provided on the inner wall of the ventilation cavity 210. The mounting groove 220 can be a through groove (as shown in FIG4 and FIG7 ) or a groove (as shown in FIG6 ), and the first electrode 300 and the second electrode 400 are inserted into the mounting groove 220. Alternatively, the first electrode 300 and the second electrode 400 can be mounted in the ventilation cavity 210 and indirectly connected to the wall of the ventilation cavity 210 by means of other structural members.

[0072] For example, referring to Figure 4, when the mounting groove 220 is a through groove, the first electrode 300 is connected to the mounting groove 220, and the length of the first electrode 300 can be greater than the depth of the mounting groove 220, so that it protrudes from the inner wall of the air inlet member 200; the length of the first electrode 300 can also be equal to the depth of the mounting groove 220, so that it is flush with the inner wall of the air inlet member 200; or, the length of the first electrode 300 can also be less than the depth of the mounting groove 220, so that it is recessed in the inner wall of the air inlet member 200.

[0073] With reference to Figures 8 to 11, the first electrode 300 and the second electrode 400 maintain a certain distance and are not in direct contact. The first electrode 300 and the second electrode 400 are electrically connected to the controller 110 respectively through a communication cable 700, etc. The controller 110 can supply power to the first electrode 300 and the second electrode 400, and continuously monitor the changes in the electrical parameters between the first electrode 300 and the second electrode 400. Specifically, the electrical parameters can be any one of current, resistance, voltage and capacitance. Since the first electrode 300 and the second electrode 400 are arranged at intervals, when the air inlet member 200 is in a dry state, an open circuit is formed between the first electrode 300 and the second electrode 400, and the resistance value between the first electrode 300 and the second electrode 400 is infinitely large, and the current value is infinitely small.

[0074] When the cleaning instrument sucks in water, the water forms a water film on the inner wall of the air inlet 200, and the first electrode 300 and the second electrode 400 are connected by water. It should be explained that the conduction mentioned here means that the first electrode 300, water, the second electrode 400 and the controller 110 form a loop, and the resistance value between the first electrode 300 and the second electrode 400 decreases to the resistance value of water, and the current value increases. When the controller 110 monitors the change of the electrical parameters between the first electrode 300 and the second electrode 400, for example, the resistance value decreases to within the set range or the current value increases to within the set range, it is determined that there is water on the cavity wall of the air inlet 200, and then it is determined that the cleaning instrument has sucked in water, so that the controller 110 issues a first instruction to adjust the cleaning instrument to a protective state.

[0075] Alternatively, the controller 110 monitors changes in capacitance between the first electrode 300 and the second electrode 400. When water is present between the first electrode 300 and the second electrode 400, and the capacitance changes within a set range, indicating the presence of water on the cavity wall, the controller 110 issues a first instruction to adjust the cleaning apparatus to a protective state. It should be noted that determining whether water absorption has occurred by measuring capacitance changes does not require electrical continuity between the first electrode 300 and the second electrode 400.

[0076] When the cleaning instrument is in the protection state, the cleaning instrument can send out warning information through alarms such as buzzers, warning lights, and vibrators, and remind the user of the occurrence of water absorption events through sound signals, light signals, vibration signals, etc., or send out warning information through the display on the cleaning instrument to remind the user of the occurrence of water absorption events. The warning information can also include the specific location where the water absorption event occurred, so that the user can promptly withdraw the cleaning instrument from the water area and dry it.

[0077] In the protection state, the cleaning instrument can also control the fan 120 to stop and clean the moisture in the air inlet 200 in time, thereby preventing water from flowing into key parts such as the fan 120 or the controller 110; or, the cleaning instrument can also control the fan 120 to reduce its power to a safe value, that is, reduce the suction wind speed of the fan 120, thereby ensuring that the water sucked into the air inlet 200 will not be adsorbed into the fan 120 and cause water inlet failure, while ensuring that the cleaning instrument still has a certain cleaning ability.

[0078] Alternatively, a movable stopper (not shown) is provided in the fan 120 or the air inlet 200 and is movably connected to the fan 120 or the air inlet 200. When the cleaning instrument is in operation, the movable stopper retracts to ensure unobstructed airflow from the air inlet 200 to the fan 120. In response to a first instruction, the movable stopper extends to seal the ventilation cavity 210, thereby separating the air inlet 200 from the fan 120 and preventing water in the air inlet 200 from entering the fan 120. The cleaning instrument can also adopt other control strategies in the protective state to protect key components.

[0079] It is understandable that the control strategy in the above-mentioned protective state can be adjusted according to the waterproof capability and specific structure of the cleaning instrument. For example, if the air inlet member 200 is a long extension tube, the first electrode 300 and the second electrode 400 are arranged at the air inlet end of the extension tube, and after the first electrode 300 and the second electrode 400 detect that a water absorption event has occurred, the water still needs to pass through a very long pipe section before entering the fan 120. In this case, a conservative control strategy can be adopted to adjust the working condition of the cleaning instrument, such as reducing the power of the fan 120, the suction speed of the fan 120, etc. If the cleaning instrument is a smaller handheld vacuum cleaner, the air inlet member 200 is shorter and directly connected to the fan 120, and after the first electrode 300 and the second electrode 400 detect that a water absorption event has occurred, the controller 110 can adopt an aggressive control strategy to adjust the working condition of the cleaning instrument, such as immediately shutting down the device to protect the safety of key components.

[0080] Based on the above, the cleaning instrument of the embodiment of the present application responds very quickly after a water absorption event occurs, and can detect the absorption of a small amount of water with almost no time delay. Therefore, the cleaning instrument of the embodiment of the present application can quickly switch to a protective state in the early stage of a water absorption event and implement a protective strategy in a timely manner, thereby reducing the probability of subsequent large amounts of water being continuously absorbed into the cleaning instrument and causing water intrusion into key components.

[0081] It is understood that the first electrode 300 and the second electrode 400 can be fixedly connected to the air inlet member 200, and the body 100 is provided with a third electrode 500 and a fourth electrode for supplying power to the first electrode 300 and the second electrode 400 of the detection component. When the air inlet member 200 is installed on the body 100, the third electrode 500 and the fourth electrode on the body 100 are electrically connected to the first electrode 300 and the second electrode 400, respectively, thereby achieving power supply and signal communication for the first electrode 300 and the second electrode 400. Alternatively, the first electrode 300 and the second electrode 400 can be fixedly connected to the body 100 and electrically connected to the controller 110 via a communication cable 700. The air inlet member 200 is provided with holes for the first electrode 300 and the second electrode 400 to pass through. When the air inlet member 200 is installed on the body 100, the electrodes of the detection component are inserted through the holes in the air inlet member 200 and extend into the air inlet member 200.

[0082] The above two situations are specifically explained by taking the structures shown in Figures 2 to 7 as an example. It should be explained that Figure 2 is a structural diagram of a handheld vacuum cleaner, wherein the dust cup 230 is partially cut away to facilitate observation of the specific setting of the detection component. The controller 110 is arranged in the fuselage 100, and the air inlet member 200 (that is, the dust cup 230) can be snap-connected to the fuselage 100, and the air inlet member 200 is connected to the fan 120. The state shown in Figure 2 is the state when the vacuum cleaner is placed horizontally. When the vacuum cleaner is working, the dust cup 230 is tilted downward to inhale dust and other garbage.

[0083] In the embodiment shown in FIG4 , the first electrode 300 and the second electrode 400 of the detection assembly are arranged through the wall surface of the air inlet member 200, with one end of the electrode exposed on the inner surface of the air inlet member 200 and the other end exposed on the outer surface of the air inlet member 200. The electrodes are fixed to the wall surface of the air inlet member 200 by injection molding, gluing, or clamping. Corresponding to the positions of the first electrode 300 and the second electrode 400 on the air inlet member 200, a third electrode 500 and a fourth electrode are arranged on the body 100. Referring to FIG4 , the third electrode 500 and the fourth electrode (not shown in the figure) are arranged protruding from the surface of the body 100. It can be understood that the third electrode 500 and the fourth electrode are also arranged at intervals and are respectively connected to the controller 110 via communication cables 700. It should be explained that only one communication cable 700 is shown in Figure 4, and at least two mutually insulated sub-cables are integrated in the communication cable 700, where the two ends of one sub-cable are respectively connected to the third electrode 500 and the controller 110, and the two ends of the other sub-cable are respectively used to connect the fourth electrode and the controller 110.

[0084] In addition, a foolproof structure or a guiding structure may be provided on the air inlet member 200 so that the air inlet member 200 can be installed on the body 100 only in a set posture. Based on the set posture, the positions of the first electrode 300 and the second electrode 400 on the air inlet member 200 are arranged to correspond to the third electrode 500 and the fourth electrode on the body 100. Thus, when the air inlet member 200 is installed in the set posture, the first electrode 300 abuts the third electrode 500, thereby connecting the first electrode 300 to the controller 110 via the third electrode 500; and the second electrode 400 abuts the fourth electrode, thereby connecting the second electrode 400 to the controller 110 via the fourth electrode.

[0085] It is understandable that if one wishes to improve the water absorption response speed and response accuracy of the air inlet member 200, this can be achieved by increasing the number of electrodes on the air inlet member 200. However, when the number of first electrodes 300 and second electrodes 400 is large, if the body 100 is provided with third electrodes 500 and fourth electrodes corresponding in number to the number of first electrodes 300 and second electrodes 400, this increases the difficulty of docking the electrodes on the body 100 with the electrodes on the air inlet member 200 and also increases the manufacturing and maintenance costs of the body 100.

[0086] Furthermore, in the embodiment shown in FIG6 , it can be seen that while multiple first electrodes 300 are provided on the air inlet member 200, unlike the electrodes on the air inlet member 200 in FIG4 , in the embodiment shown in FIG6 , the first electrodes 300 on the air inlet member 200 do not penetrate the air inlet member 200, but are exposed on the inner surface of the air inlet member 200. A fifth electrode 600 is also provided on the air inlet member 200 at a position corresponding to the third electrode 500 on the body 100, and is exposed on the outer surface of the air inlet member 200. Furthermore, each first electrode 300 is electrically connected to the fifth electrode 600.

[0087] FIG6 only shows the electrical connection diagram of the plurality of first electrodes 300 and the fifth electrode 600. Similarly, if the air inlet member 200 is provided with a plurality of second electrodes 400, a sixth electrode is also provided on the air inlet member 200. The plurality of second electrodes 400 are all electrically connected to the sixth electrode.

[0088] Taking the first electrode 300 and the fifth electrode 600 shown in FIG6 as an example, the first electrode 300 and the fifth electrode 600 in FIG6 are connected by a cable, which can be embedded into the housing of the air inlet member 200 through methods such as injection molding. Since the air inlet member 200 is made of an insulating material, the first electrode 300 and the fifth electrode 600 can be directly connected by a metal wire, and the metal wire can be embedded into the housing of the air inlet member 200 through methods such as injection molding. Providing a conductive portion within the housing of the air inlet member 200 through methods such as injection molding contributes to the overall aesthetics of the air inlet member 200. The cable is less susceptible to corrosion from dust, water stains, etc. within the air inlet member 200 and is relatively stable.

[0089] Alternatively, the first electrode 300 can be connected to the fifth electrode 600 via a cable arranged on the inner or outer wall of the air inlet member 200. Specifically, a cable extends from each electrode, extending along the inner wall of the air inlet member 200. The cables are then integrated into a single cable and passed through the housing of the air inlet member 200, thereby connecting to the fifth electrode 600 on the other side. This connection structure simplifies cable routing and reduces the number of through-holes required in the air inlet member 200, thereby reducing the probability of air, dust, or water leakage from the air inlet member 200.

[0090] Based on the above, after each first electrode 300 and / or second electrode 400 on the inner surface of the air inlet member 200 is connected to the corresponding fifth electrode 600 and / or sixth electrode respectively, when the air inlet member 200 is installed on the fuselage 100, the fifth electrode 600 abuts against the third electrode 500, and the first electrode 300 is connected to the controller 110 through the fifth electrode 600 and the third electrode 500 in sequence, and / or the second electrode 400 is connected to the controller 110 through the sixth electrode and the fourth electrode in sequence. Based on this structure, when there are a large number of first electrodes 300 and / or second electrodes 400, only one third electrode 500 and / or fourth electrode can still be provided on the fuselage 100 for docking. Therefore, air inlet members 200 with different numbers of electrodes and thus different response speeds can all be adapted to the same fuselage 100, without having to design different connection structures according to air inlet members 200 with different numbers of electrodes, thereby saving design costs.

[0091] Different from the above-mentioned embodiment in which electrodes are provided on both the air inlet member 200 and the fuselage 100, in the embodiment shown in FIG7 , no electrodes are required to be provided on the air inlet member 200. Specifically, as shown in FIG7 , the first electrode 300 and the second electrode 400 are both columnar or needle-shaped structures, protruding from the fuselage 100 and having a certain length. The mounting groove 220 is provided through the cavity wall of the ventilation cavity 210. Specifically, the mounting groove 220 includes a first mounting groove and a second mounting groove. The first mounting groove corresponds to the position of the first electrode 300, and the second mounting groove corresponds to the position of the second electrode 400. When the air inlet member 200 is installed on the fuselage 100 in a set posture, the first electrode 300 is provided in the first mounting groove, and the second electrode 400 is provided in the second mounting groove.

[0092] It should be noted that the first electrode 300 is disposed in the first mounting groove, and the distal end of the first electrode 300 may extend into the ventilation cavity 210, thereby protruding from the inner wall of the ventilation cavity 210. Alternatively, the distal end of the first electrode 300 may not extend into the ventilation cavity 210, such that the distal end of the first electrode 300 is located in the mounting groove 220. The second electrode 400 is similarly configured and will not be further described here.

[0093] It can be understood that a sealing structure can be provided in the first mounting groove and the second mounting groove. When the first electrode 300 and the second electrode 400 pass through, the sealing structure can be deformed by abutment, thereby fitting against the outer wall of the first electrode 300 and the second electrode 400 to prevent dust, wind, or water from seeping out of the first mounting groove or the second mounting groove.

[0094] Alternatively, any one of the first electrode 300 and the second electrode 400 is disposed on the body and can be passed through the mounting slot 220 , and the other is disposed on the air inlet member 200 and electrically connected to the controller 110 through the electrode on the body 100 .

[0095] In addition, the setting form and installation form of the first electrode 300 and the second electrode 400 can be diverse. The requirements for the size, setting position, setting spacing, manufacturing materials, etc. of the first electrode 300 and the second electrode 400 are relatively low, and can be appropriately adjusted according to the design cost, waterproof level, etc. of the cleaning instrument.

[0096] The first electrode 300 and the second electrode 400 can be point-shaped, strip-shaped, sheet-shaped, etc.; can be a probe structure, a screw structure, a sheet structure, etc.; the installation form of the electrode on the inner wall of the air inlet member 200 can also be various, including but not limited to: injection molding, insertion, threaded, etc.; the number of the first electrode 300 and the second electrode 400 can be the same or different; the first electrode 300 and the second electrode 400 can be distributed in sequence along the air inlet direction, or can be distributed in sequence along the circumference of the air inlet member 200; the number of the first electrode 300 and the second electrode 400 can be set to one, and in order to enhance the water absorption response speed and accuracy of the cleaning instrument, the first electrode 300 and the second electrode 400 can also be provided with multiple.

[0097] It is understood that the number of first electrodes 300 and second electrodes 400 does not necessarily have to be the same. In the embodiment shown in FIG8 , the first electrode 300 and the second electrode 400 are both point-shaped structures, with one first electrode 300 and multiple second electrodes 400, and the second electrode 400 is arranged around the first electrode 300; similarly, the number of first electrodes 300 can be multiple, and the number of second electrodes 400 can be one, and the first electrode 300 is arranged around the second electrode 400. Compared to the case where one first electrode 300 is paired with one second electrode 400, in the embodiment shown in FIG8 , one first electrode 300 is used in combination with multiple second electrodes 400. When any second electrode 400 is connected to the first electrode 300 located in the middle thereof by water, the controller 110 can respond quickly. Compared with the implementation method of adding a first electrode 300 and a second electrode 400 in groups to obtain a larger detection range and a faster response speed, although the detection range in this implementation is increased exponentially, the cost is not increased exponentially. While improving the detection range and response speed, the cost is saved through the one-to-many electrode combination.

[0098] It can be understood that, as shown in Figure 9, the first electrode 300 and the second electrode 400 can be alternately arranged along the axial direction (or air inlet direction) and circumferential direction of the air inlet member 200, so that any first electrode 300 is surrounded by the second electrode 400, and any second electrode 400 is surrounded by the first electrode 300, thereby further expanding the detection range of the electrode to obtain a faster response speed.

[0099] It should be noted that the shapes of the first electrode 300 and the second electrode 400 do not necessarily have to be identical. As shown in Figure 10 , the first electrode 300 is point-shaped, the second electrode 400 is ring-shaped, and the second electrode 400 is disposed around the first electrode 300. Similarly, the first electrode 300 may also be ring-shaped, the second electrode 400 may be point-shaped, and the first electrode 300 may be disposed around the second electrode 400. Compared to a case where both the first electrode 300 and the second electrode 400 are point-shaped electrodes, this embodiment provides a wider detection range.

[0100] Figures 11 and 13 are schematic diagrams of the expansion of the air inlet member 200 along the circumferential direction. As shown in the figure, the first electrode 300 and the second electrode 400 can also be a strip structure. The first electrode 300 and the second electrode 400 are spaced a certain distance apart and arranged side by side along the circumference of the air inlet member 200, and their length direction is parallel to the air inlet direction of the air inlet member 200; or the first electrode 300 and the second electrode 400 are arranged side by side along the air inlet direction of the air inlet member 200, and their length direction is parallel to the circumference of the air inlet member 200; or, when spiral air inlet is generated in the air inlet member 200, the length direction of the first electrode 300 and the second electrode 400 are consistent with the rotation direction of the spiral air inlet. It can be understood that the strip-shaped electrode can increase its detection range in a single direction, thereby further improving the response speed.

[0101] As can be understood, referring to Figure 11 , the first electrode 300 and the second electrode 400 extend along the air inlet direction and are positioned at the bottom of the air inlet member 200. As shown in Figure 12 , when the cleaning device is in a horizontal position, the first electrode 300 is positioned at the bottom of the air inlet member 200, and the same applies to the second electrode 400. Consequently, when the cleaning device is operating and the air inlet member 200 is tilted, water is more likely to be thrown onto the first electrode 300 and the second electrode 400 due to the combined effects of gravity and centrifugal force.

[0102] As shown in FIG13 , when the first electrode 300 and the second electrode 400 extend along the circumference of the air inlet member 200, the first electrode 300 and the second electrode 400 are disposed close to the air inlet of the air inlet member 200, that is, the first electrode 300 and the second electrode 400 are located at the right end of the air inlet member 200 as shown in FIG2 . Therefore, when the cleaning instrument is operating and the air inlet member 200 is tilted, water thrown onto the inner wall of the air inlet member 200 will slide down to the conductive first electrode 300 and the second electrode 400 due to the influence of gravity. Similarly, when the first electrode 300 and the second electrode 400 are in the form of dots, the first electrode 300 and the second electrode 400 are disposed at the end of the air inlet member 200 away from the fan 120, thereby increasing the probability of sensing water.

[0103] It is understood that when the first electrode 300 and the second electrode 400 are in the shape of strips, the water absorption response speed of the cleaning instrument can be further increased by increasing the number of the first electrodes 300 and the second electrodes 400. For example, by arranging the first electrodes 300 and the second electrodes 400 alternately. Specifically, a plurality of first electrodes 300 and the second electrodes 400 can be provided, and the first electrodes 300 and the second electrodes 400 are alternately and spaced apart, so that any first electrode 300 is adjacent to two second electrodes 400, and the first electrode 300 is conductively connected to any adjacent second electrode 400, and the controller 110 can respond.

[0104] Unlike the above-mentioned embodiments, in which the detection assembly includes a first electrode 300 and a second electrode 400, and the first electrode 300 must be connected to the second electrode 400, in other embodiments of the present application, the detection assembly no longer distinguishes between the first electrode 300 and the second electrode 400. Specifically, the detection assembly includes at least three first electrodes 300, and when any two first electrodes 300 are connected by liquid, or when liquid exists between any two first electrodes 300, the cleaning instrument is adjusted to a protective state.

[0105] It is understandable that the first electrode 300 may be arranged to protrude from the inner wall of the ventilation cavity 210 , or to be arranged to be flush with the inner wall of the ventilation cavity 210 , or to be arranged to be recessed in the inner wall of the ventilation cavity 210 .

[0106] It is understood that each first electrode 300 needs to be spaced apart and can be arranged in a surrounding, parallel, or other manner. The first electrodes 300 are disposed on the air inlet member 200. Correspondingly, a third electrode 500 is disposed on the body 100. The third electrode 500 is electrically connected to the controller 110 via a communication cable 700. When the air inlet member 200 is mounted on the body 100, each first electrode 300 is electrically connected to the controller 110 via the third electrode 500.

[0107] It can be understood that when the number of first electrodes 300 is large, they can be routed on the inner wall of the air inlet member 200 and bundled at the same interface to facilitate docking with the fuselage 100. However, unlike Figure 6 where similar electrodes can be short-circuited, the electrodes on the air inlet member 200 in this embodiment need to remain open.

[0108] The first electrode 300 can also be arranged on the body 100, and the mounting groove 220 is arranged through the inner wall of the ventilation cavity 210. When the air inlet member 200 is installed on the body 100, the first electrode 300 is arranged through the mounting groove 220.

[0109] Different from the embodiment described above in which electrodes are provided on the wall of the ventilation cavity 210 for water absorption detection, electrodes can also be provided on functional components in the ventilation cavity 210 to detect whether there is water on the functional components. Specifically, the functional component can be a floor brush, which is provided at the air inlet of the ventilation cavity 210. When the fan 120 is running to generate airflow, the floor brush is driven to rotate, thereby disturbing the dust on the ground, so that the dust is more easily adsorbed into the cleaning instrument. The functional component can also be a filter element such as filter cotton or filter mesh. The filter element is provided in the ventilation cavity 210 and can filter garbage carried by the airflow to prevent the garbage from entering the fan 120 and causing the fan 120 to malfunction.

[0110] It is understandable that the first electrode 300 and the second electrode 400 are arranged on the functional part. The controller 110 continuously monitors the resistance value or current value between the first electrode 300 and the second electrode 400. After the cleaning instrument absorbs water, since the functional part is arranged in the air duct, after the water adheres to the functional part, the first electrode 300 and the second electrode 400 are connected, the resistance value or the current value changes, and the controller 110 issues a first instruction to switch the cleaning instrument from the working state to the protection state. Alternatively, the controller 110 continuously monitors the capacitance value between the first electrode 300 and the second electrode 400. After water flows between the first electrode 300 and the second electrode 400, the capacitance value between the first electrode 300 and the second electrode 400 changes, and the controller 110 issues a first instruction to switch the cleaning instrument from the working state to the protection state.

[0111] The cleaning instrument according to the embodiments of the present application is provided with a detection component to enhance the cleaning instrument's water absorption detection capability. This allows the cleaning instrument to quickly respond and switch to a protective state after absorbing water, thereby reducing the probability of water entering key components. This cleaning instrument does not require additional waterproof structures or improved waterproof performance of key components to reduce the probability of water intrusion, thereby preventing the operating performance of key components from being affected.

[0112] The second embodiment of the present application further proposes a water absorption control method, which can be applied to the cleaning instrument in any of the above embodiments to achieve a rapid response to water absorption events. Specifically, as shown in FIG14 , the method mainly includes the following steps:

[0113] Step 100: Acquire electrical parameters of the detection component, wherein the electrical parameters are used to indicate whether liquid exists on the wall of the ventilation cavity;

[0114] Step 200: If the electrical parameter is within a set range indicating the presence of liquid in the cavity wall, the controller issues a first instruction;

[0115] Step 300: In response to a first instruction, adjust the cleaning instrument to a protection state.

[0116] It is understandable that the electrical parameters of the detection component are continuously monitored by the controller 110. The electrical parameters can be resistance values, current values, or voltage values, etc. It is understandable that solid waste such as dust and hair can be equivalent to a conductor with a large resistance value. Therefore, when the cleaning instrument inhales solid waste such as dust and hair, these solid wastes can also achieve a certain degree of electrode conduction, thereby causing certain fluctuations in the electrical parameters measured by the detection component. In order to avoid the misjudgment of the cleaning instrument caused by this fluctuation, a set range is preset in the controller 110. When the controller 110 obtains the signal of the detection component and falls within the set range, it is determined that the cleaning instrument has a risk of water ingress.

[0117] Specifically, the setting range is the resistance range, voltage range or current range of water, etc. When the electrical parameters of the detection component monitored by the controller 110 fall within the set range, it indicates that there is liquid on the cavity wall. Taking the setting range of the resistance range of water as an example, it can be understood that the resistance value of water is not a fixed value, but a range, depending on the number of conductive ions contained in the water. In addition, the water described here should be common water in household life, such as drinking water, tap water, etc., and should not be understood as pure water or other water that has been treated by a special process. When the controller 110 detects that the resistance of the detection component decreases sharply to within the set range, it is determined that there is water in the air inlet part 200, and then it is determined that the cleaning instrument has absorbed water, so that the controller 110 issues a first instruction, and in response to the first instruction, the cleaning instrument switches to a protective state.

[0118] It is understood that the first instruction may be directed to an alarm, a display, or the fan 120. The alarm may also be a buzzer that issues an alarm through an acoustic signal, a flashing light that issues an alarm through an optical signal, or a vibrator that issues an alarm through a vibration signal. In response to the first instruction, the alarm issues an alarm message to remind the user to quickly remove the cleaning instrument from the water area.

[0119] Alternatively, the first instruction may be directed to the fan 120. For example, in response to the first instruction, the suction wind speed of the fan 120 is adjusted from the first working wind speed to the second wind speed in the protection state. The first wind speed is less than the second wind speed, so that the suction force of the fan 120 decreases to avoid sucking more water into the fuselage 100. The second wind speed may also be equal to 0, that is, the fan 120 stops and waits for processing. It can be understood that the first wind speed is not a fixed value. The fan 120 can have multiple working gears, and different working gears correspond to different suction wind speeds. The second wind speed should be less than the minimum suction wind speed in the working state.

[0120] Alternatively, a movable stopper is provided in the fan 120 or the air inlet 200, and is movably connected to the fan 120 or the air inlet 200. When the cleaning device is in operation, the movable stopper retracts to ensure unobstructed air flow from the air inlet 200 to the fan 120. In response to a first command, the movable stopper extends to close the ventilation cavity 210, thereby separating the air inlet 200 from the fan 120 and preventing water in the air inlet 200 from entering the fan 120.

[0121] It is understandable that if there is less water on the ground, even if water is sucked into the air inlet member 200, it will only be thrown out onto the inner wall of the air inlet member 200 and slide along the inner wall of the air inlet member 200 to the outlet air inlet member 200. There is no risk of water ingress to the fan 120. In this case, the fan 120 can operate normally. To this end, as shown in Figure 15, the water absorption control method further includes the following steps:

[0122] Step 400: Obtain electrical parameters of the detection component;

[0123] Step 500: If the electrical parameter is outside the set range and remains for a first time, the controller issues a second instruction, wherein the first time is greater than or equal to the set value;

[0124] Step 600: In response to the second instruction, adjust the cleaning instrument to a working state.

[0125] Take the case where the fan 120 reduces its wind speed in response to the first instruction as an example: after the fan 120 inhales a small amount of water, the electrodes of the detection component are turned on, and the resistance value of the detection component decreases and falls within the set range, thereby triggering the protection mechanism of the fan 120, and the suction wind speed of the fan 120 is reduced to the second wind speed. At the second wind speed, if the water on the inner wall of the air inlet member 200 slides outside the air inlet member 200 due to gravity, the resistance value of the detection component returns to infinity, so that the resistance value of the detection component is outside the set range. In addition, after the electrodes of the detection component return to the open circuit state, it remains for a period of time, that is, no new water is inhaled within the set length of time, and there is no possibility of worsening the water absorption event in the cleaning instrument, then the fan 120 can be issued a second instruction to release its protective state.

[0126] It is understandable that the controller 110 sends a second instruction to the fan 120 to restore its working wind speed to avoid affecting its cleaning work due to a small amount of water. In addition, the second instruction may also include a pause instruction of the prompt information to avoid continuous alarm affecting the user's experience.

[0127] The third embodiment of the present application proposes a readable storage medium, which stores a computer program. When the computer program is executed by the controller 110, it can implement any of the water absorption control methods mentioned in the above embodiments.

[0128] It should be noted that the readable storage medium may include but is not limited to phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other optical or magnetic storage media, which are not listed here one by one.

[0129] Some embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present application.

Claims

1. A cleaning apparatus, comprising: A fan capable of forming an inlet air; An air inlet member, defining a ventilation cavity, through which the inlet air flows toward the fan; A detection component, used for detecting whether there is liquid in the ventilation cavity; as well as A controller is electrically connected to the detection component, and the controller is configured to adjust the cleaning instrument to a protective state in response to the presence of liquid in the ventilation cavity.

2. The cleaning apparatus according to claim 1, wherein: The detection assembly comprises a first electrode and a second electrode arranged at intervals, wherein the first electrode and the second electrode are protrudingly connected to the cavity wall of the ventilation cavity; or, a mounting groove is provided on the cavity wall, and the first electrode and the second electrode are at least partially located in the mounting groove; Wherein, in response to the capacitance value between the first electrode and the second electrode being within a set range indicating the presence of liquid in the cavity wall, the controller adjusts the cleaning instrument to the protective state; or, in response to the first electrode and the second electrode being conductive, the controller adjusts the cleaning instrument to the protective state.

3. The cleaning apparatus according to claim 2, further comprising a body, wherein: The air inlet piece is detachably connected to the body, the first electrode and the second electrode are arranged on the air inlet piece, and the body is provided with a third electrode and a fourth electrode electrically connected to the controller. When the body is connected to the air inlet piece, the first electrode is electrically connected to the third electrode, and the second electrode is electrically connected to the fourth electrode.

4. The cleaning apparatus according to claim 3, wherein: There are a plurality of first electrodes, and the detection assembly further includes a fifth electrode disposed on the air inlet member, each of the first electrodes is electrically connected to the fifth electrode, and when the body is connected to the air inlet member, each of the first electrodes is electrically connected to the third electrode through the fifth electrode; And / or, there are multiple second electrodes, and the detection component also includes a sixth electrode arranged on the air inlet member, each second electrode is electrically connected to the sixth electrode, and when the body is connected to the air inlet member, each second electrode is electrically connected to the fourth electrode through the sixth electrode.

5. The cleaning apparatus according to claim 2, further comprising a body, wherein: The air inlet member is detachably connected to the body, and when the cavity wall is provided with the mounting groove, the mounting groove penetrates the cavity wall; The first electrode is arranged on the fuselage, and when the fuselage is connected to the air inlet, the first electrode is passed through the mounting groove; and / or the second electrode is arranged on the fuselage, and when the fuselage is connected to the air inlet, the second electrode is passed through the mounting groove.

6. The cleaning apparatus according to any one of claims 2 to 5, wherein: The first electrode is configured in a ring shape, and the first electrode is wound around the second electrode; or, there are a plurality of first electrodes, and the plurality of first electrodes are wound around the second electrode.

7. The cleaning apparatus according to any one of claims 2 to 6, wherein: The first electrode and the second electrode are arranged in parallel along the circumference of the air inlet member and extend along the air inlet direction of the air inlet member; or the first electrode and the second electrode are arranged in parallel along the air inlet direction and extend along the circumference of the air inlet member.

8. The cleaning apparatus according to any one of claims 1 to 7, wherein: The detection component is arranged at an end of the air inlet member away from the fan.

9. The cleaning apparatus according to any one of claims 1 to 8, wherein: When the cleaning instrument is adjusted to the protective state, the suction wind speed of the fan decreases; or, the cleaning instrument also includes an alarm, and when the cleaning instrument is adjusted to the protective state, the alarm sends a warning message; or, the cleaning instrument also includes a movable baffle, which is movably connected to the air inlet member, and when the cleaning instrument is adjusted to the protective state, the movable baffle closes the ventilation cavity.

10. The cleaning apparatus according to claim 1, wherein: The detection assembly comprises at least three first electrodes arranged at intervals, wherein the first electrodes are protrudingly connected to the cavity wall of the ventilation cavity, or the cavity wall is provided with a mounting groove, and the first electrodes are at least partially located in the mounting groove; Wherein, in response to the capacitance value between any two of the first electrodes being within a set range indicating the presence of liquid in the cavity wall, the controller adjusts the cleaning instrument to the protection state; or, in response to any two of the first electrodes being turned on, the controller adjusts the cleaning instrument to the protection state.

11. The cleaning instrument according to claim 10 further includes a body, the air inlet piece is detachably connected to the body, each of the first electrodes is arranged on the air inlet piece, and a plurality of third electrodes respectively electrically connected to the controller are arranged on the body, and when the body is connected to the air inlet piece, each of the first electrodes is respectively electrically connected to the third electrodes.

12. The cleaning instrument according to claim 10 further includes a body, the air inlet member is detachably connected to the body, each of the first electrodes is arranged on the body, the mounting groove passes through the cavity wall, and when the body is connected to the air inlet member, the first electrode is passed through the mounting groove.

13. The cleaning apparatus according to any one of claims 1 to 12, wherein: The ventilation cavity is provided with a functional part for cleaning or filtering, the detection component is used to detect whether there is liquid on the functional part, and the controller is configured to adjust the cleaning instrument to the protective state in response to the presence of liquid on the functional part.

14. A water absorption control method for use in cleaning equipment, wherein: The cleaning instrument comprises a fan, an air inlet, a detection assembly and a controller, wherein the air inlet defines a ventilation cavity, and air can be formed in the ventilation cavity toward the fan. The water absorption control method comprises the following steps: Acquiring electrical parameters of the detection component disposed in the air inlet member, wherein the electrical parameters are used to characterize whether there is liquid in the ventilation cavity; If the electrical parameter is within a set range indicating that liquid exists in the ventilation cavity, the controller issues a first instruction; and In response to the first instruction, the cleaning instrument is adjusted to a protection state.

15. The water absorption control method according to claim 14, wherein: The protection status includes any one of the following actions or a combination thereof: The suction wind speed of the fan of the cleaning instrument decreases; The alarm of the cleaning instrument sends out a warning message; The movable stopper of the cleaning instrument extends out to close the ventilation cavity of the air inlet member.

16. The water absorption control method according to claim 14 or 15, wherein: After the cleaning instrument is adjusted to a protection state in response to the first instruction, the following steps are also included: Acquiring electrical parameters of the detection component; If the electrical parameter is outside the set range and remains for a first time, the controller issues a second instruction, wherein the first time is greater than or equal to a set value; and In response to the second instruction, the cleaning instrument is adjusted to a working state.

17. A readable storage medium storing a computer program, wherein: When the computer program is executed by a controller, the water absorption control method according to any one of claims 14 to 16 is implemented.

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