Liquid storage device and cleaning device

Abstract

The present invention discloses a liquid storage device and a cleaning device. The liquid storage device includes a liquid storage structure for storing liquid; a liquid inlet structure through which liquid can flow into the liquid storage structure; a barrier structure, an induction field generating component for generating an induction field, an induction component, and an electronic control unit. Among them, the barrier structure is disposed within the liquid storage structure, the induction component can sense the induction field, the barrier structure can float under the buoyancy of the liquid, the barrier structure can block the induction of the induction field by the induction component when floating to a first liquid level, and the electronic control unit is configured to control the liquid inlet structure to stop inputting liquid into the liquid storage structure when the barrier structure blocks the induction of the induction field by the induction component. This liquid storage device can stop the liquid from entering the liquid storage device when the liquid storage device collects liquid up to a preset liquid level, avoiding the phenomenon of overflow of the liquid storage device and resulting in accidents.

Description

Technical Field

[0001] The present invention belongs to the field of cleaning technology, and more specifically, relates to a liquid storage device and a cleaning device. Background Art

[0002] A liquid storage device is a device for collecting liquids. During the process of liquid entering the liquid storage device, overflow is likely to occur. When the liquid storage device collects liquid to a preset liquid level, if the liquid entering the liquid storage device cannot be stopped in time, accidents are likely to occur. Summary of the Invention

[0003] The purpose of the present invention is to provide a liquid storage device and a cleaning device to solve the technical problem that in the prior art, when the liquid storage device collects liquid to a preset liquid level, if the liquid entering the liquid storage device cannot be stopped in time, accidents are likely to occur.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: In the first aspect of the present invention, a liquid storage device is provided, including: a liquid storage structure for storing liquid;

[0005] A liquid inlet structure through which liquid can flow into the liquid storage structure;

[0006] A blocking structure, an induction field generating component for generating an induction field, an induction component, and an electric control unit. Among them, the blocking structure is arranged inside the liquid storage structure, the induction component can sense the induction field, the blocking structure can float under the buoyancy of the liquid, the blocking structure can block the induction of the induction field by the induction component when floating to the first liquid level, and the electric control unit is used to control the liquid inlet structure to stop inputting liquid into the liquid storage structure when the blocking structure blocks the induction of the induction field by the induction component.

[0007] In one embodiment, the blocking structure is further used to make the liquid inlet structure stop inputting liquid into the liquid storage structure when floating to the second liquid level.

[0008] In one embodiment, the liquid inlet structure includes a liquid inlet and an air suction port opened on the liquid storage structure. The air suction port is used to connect to an external air extraction mechanism. The air extraction mechanism is used to extract air from the liquid storage structure through the air suction port to generate negative pressure inside the liquid storage structure, and liquid enters the liquid storage structure through the liquid inlet. The air extraction mechanism is electrically connected to the electric control unit, and the electric control unit is used to control the air extraction mechanism to stop extracting air from the liquid storage structure when the blocking structure blocks the induction of the induction field by the induction component.

[0009] In one embodiment, the blocking structure and the air suction port can be floatingly connected.

[0010] In one embodiment, the electric control unit includes an alarm, and the alarm is configured to output a signal for indicating that the liquid level has reached or exceeded the first liquid level when the barrier structure blocks the induction of the induction field by the induction member.

[0011] In one embodiment, the induction member is disposed outside the liquid storage structure.

[0012] In one embodiment, the induction field generating member is disposed inside the liquid storage structure.

[0013] In one embodiment, the induction field generating member is a magnet, the induction member is a Hall sensor, and the Hall sensor is electrically connected to the electric control unit.

[0014] In one embodiment, the barrier structure includes a float and an insulating member. A float rod is disposed inside the liquid storage structure. The float is slidably connected to the float rod, and the insulating member is disposed on the float.

[0015] A second aspect of the present invention provides a cleaning device, and the cleaning device includes a liquid storage device, and the liquid storage device is the liquid storage device as described above.

[0016] The beneficial effects of the liquid storage device provided by the present invention are as follows: The liquid storage structure of the liquid storage device is used to store liquid. The liquid can flow into the liquid storage structure through the liquid inlet structure. The barrier structure is disposed inside the liquid storage structure. The induction member can sense the induction field. The barrier structure can float under the buoyancy of the liquid. The barrier structure can block the induction of the induction field by the induction member when floating to the first liquid level. The electric control unit is configured to control the liquid inlet structure to stop inputting liquid into the liquid storage structure when the barrier structure blocks the induction of the induction field by the induction member. When the liquid storage structure of the liquid storage device collects liquid to the first liquid level, the electric control unit controls the liquid inlet structure to stop inputting liquid into the liquid storage structure, and can stop the liquid from entering the liquid storage device when the liquid storage device collects liquid to the preset liquid level, avoiding the phenomenon of overflow of the liquid storage device and causing accidents.

[0017] The cleaning device provided by the present invention includes the above-mentioned liquid storage device. When the liquid storage structure of the liquid storage device collects liquid to the first liquid level, the electric control unit controls the liquid inlet structure to stop inputting liquid into the liquid storage structure, and can stop the liquid from entering the liquid storage device when the liquid storage device collects liquid to the preset liquid level, avoiding the phenomenon of overflow of the liquid storage device and causing accidents, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic diagram of the barrier structure of the liquid storage device provided by the embodiment of the present invention when at the first liquid level;

[0020] Figure 2 Schematic diagram of the barrier structure of the liquid storage device provided by the embodiment of the present invention when at the second liquid level;

[0021] Figure 3 Schematic diagram of the liquid storage device provided by the embodiment of the present invention from a perspective;

[0022] Figure 4 Schematic diagram of the cleaning device provided by the embodiment of the present invention from a perspective;

[0023] Figure 5 Schematic diagram of the cleaning device provided by the embodiment of the present invention from a perspective;

[0024] Figure 6 For Figure 5 Schematic diagram of the A-A cross-sectional structure in

[0025] Among them, the reference numerals in the figure:

[0026] 1 - liquid storage structure; 2 - liquid inlet structure;

[0027] 3 - barrier structure; 4 - induction field generating member;

[0028] 5 - induction member; 11 - box body;

[0029] 12 - cover body; 13 - float rod;

[0030] 14 - mounting bracket; 21 - liquid inlet;

[0031] 22 - suction port; 31 - float;

[0032] 32 - isolation member. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that comprises a series of steps or units does not necessarily limit to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0038] The liquid storage device and the cleaning device provided by the present invention will be described in detail below with reference to specific embodiments.

[0039] Figure 1 For the structural schematic diagram of the barrier structure of the liquid storage device provided by the embodiments of the present invention when it is at the first liquid level, please refer to Figure 1As shown in the figure, the first aspect of the embodiment of the present invention provides a liquid storage device, which includes: a liquid storage structure 1 for storing liquid; a liquid inlet structure 2 through which liquid can flow into the liquid storage structure 1; a barrier structure 3, an induction field generating member 4 for generating an induction field, an induction member 5, and an electronic control unit. Among them, the barrier structure 3 is arranged in the liquid storage structure 1, the induction member 5 can sense the induction field, the barrier structure 3 can float under the buoyancy of the liquid, the barrier structure 3 can block the induction of the induction field by the induction member 5 when floating to the first liquid level, and the electronic control unit is used to control the liquid inlet structure 2 to stop inputting liquid into the liquid storage structure 1 when the barrier structure 3 blocks the induction of the induction field by the induction member 5.

[0040] The liquid storage structure 1 in this embodiment is used to store liquid. The specific material and size of the liquid storage structure 1 in this embodiment are not particularly limited, and the liquid flows into the liquid storage structure 1 through the liquid inlet structure 2.

[0041] By way of example and not limitation, the liquid can be any one of the following: sewage, purified water, disinfectant. The liquid storage structure 1 may include a box body 11 and a cover body 12, the box body 11 and the cover body 12 are hermetically connected, and the box body 11 and the cover body 12 are detachably connected to facilitate the user to clean the liquid storage structure 1.

[0042] The liquid inlet structure 2 in this embodiment is a structure for inputting liquid into the liquid storage structure 1. By way of example and not limitation, the liquid inlet structure 2 may include at least one of the following: a liquid inlet pipe, a liquid inlet, a water pump.

[0043] The induction field generating member 4 in this embodiment is used to generate an induction field, the induction member 5 is used to sense the induction field, and both the induction field generating member 4 and the induction member 5 are located in the space above the bottom surface of the liquid storage structure 1. By way of example and not limitation, the induction field generating member 4 in this embodiment can be an infrared generator, and the corresponding induction member 5 is an infrared receiver; or, the induction field generating member 4 in this embodiment can be a magnet, and the corresponding induction member is a Hall sensor.

[0044] In this embodiment, since the density of the barrier structure 3 is less than the density of the liquid, the barrier structure 3 can float under the buoyancy of the liquid. The floating space of the barrier structure 3 is between the induction field generating member 4 and the induction member 5. When the barrier structure 3 floats to the first liquid level, it blocks the induction of the induction field of the induction field generating member 4 by the induction member 5. When the barrier structure 3 blocks the induction of the induction field by the induction member 5, the electronic control unit controls the liquid inlet structure 2 to stop inputting liquid into the liquid storage structure 1. This embodiment realizes the electronic control protection of the liquid storage structure 1 through the electronic control unit to prevent the liquid from overflowing from the liquid storage structure 1.

[0045] The liquid storage structure of the liquid storage device in this embodiment is used to store liquid. The liquid can flow into the liquid storage structure through the liquid inlet structure. The barrier structure is arranged in the liquid storage structure. The sensing member can sense the sensing field. The barrier structure can float under the buoyancy of the liquid. The barrier structure can block the sensing of the sensing field by the sensing member when floating to the first liquid level. The electronic control unit is used to control the liquid inlet structure to stop inputting liquid into the liquid storage structure when the barrier structure blocks the sensing of the sensing field by the sensing member. When the liquid storage structure of this liquid storage device collects liquid to the first liquid level, the electronic control unit controls the liquid inlet structure to stop inputting liquid into the liquid storage structure, which can stop the liquid from entering the liquid storage device when the liquid storage device collects liquid to the preset liquid level, avoiding the phenomenon of overflow and accidents in the liquid storage device.

[0046] Furthermore, Figure 2 The following is a schematic structural diagram of the barrier structure of the liquid storage device provided by the embodiment of the present invention when it is at the second liquid level. Please refer to Figure 2 As shown, in a specific embodiment, the barrier structure 3 is also used to make the liquid inlet structure 2 stop inputting liquid into the liquid storage structure 1 when floating to the second liquid level.

[0047] If the electronic control protection fails (by way of example and not limitation, the scenarios of electronic control protection failure can be at least one of the following: the circuit of the electronic control unit is disconnected, the circuit of the electronic control unit is short-circuited, and the isolation structure 3 fails), then when the barrier structure 3 reaches the first liquid level, the electronic control unit cannot control the liquid inlet structure 2 to stop inputting liquid into the liquid storage structure 1, the liquid level in the liquid storage structure 1 continues to rise, and the barrier structure 3 continues to float upward under the buoyancy of the liquid. When the barrier structure 3 floats to the second liquid level, the barrier structure 3 makes the liquid inlet structure 2 stop inputting liquid into the liquid storage structure 1, realizing physical protection of the liquid storage device (to prevent liquid from overflowing from the liquid storage device).

[0048] The liquid inlet structure 2 in this embodiment includes a liquid inlet 21 and an air suction port 22 opened on the liquid storage structure 1. The air suction port 22 is used to connect to an external air extraction mechanism. The air extraction mechanism is used to extract air from the liquid storage structure 1 through the air suction port 22, so as to generate negative pressure in the liquid storage structure 1, and the liquid enters the liquid storage structure 1 through the liquid inlet 21. The air extraction mechanism is used to be electrically connected to the electronic control unit. The electronic control unit is used to control the air extraction mechanism to stop extracting air from the liquid storage structure 1 when the barrier structure 3 blocks the sensing of the sensing field by the sensing member 5. In this embodiment, the air extraction mechanism can be set as a vacuum pump. The specific form of the vacuum pump in this embodiment is not particularly limited. The vacuum pump is connected to the air suction port 22 and is used to extract the gas inside the liquid storage structure 1.

[0049] In this embodiment, the barrier structure 3 and the air inlet 22 can be floatingly connected. The floating connection means that when the barrier structure 3 floats to the second liquid level under the buoyancy of the liquid, it can be connected (contacted) with the air inlet 22. Specifically, the barrier structure 3 can float to the second liquid level under the buoyancy of the liquid to block the air inlet 22, thereby preventing the gas in the liquid storage structure 1 from being pumped away, and then the liquid stops entering the liquid storage structure 1, thus avoiding the overflow of the liquid from the liquid storage device (realizing the physical protection of the liquid storage device).

[0050] Preferably, the electronic control unit includes an alarm, and the alarm is used to output a signal indicating that the liquid level has reached or exceeded the first liquid level when the barrier structure 3 blocks the induction of the induction field by the induction member 5. The liquid storage device of this embodiment reminds the user through the alarm that the liquid level has reached or exceeded the first liquid level, so as to timely remind the user to perform liquid full treatment on the liquid storage device (for example, remind the user to pour out the sewage in the liquid storage device).

[0051] In some embodiments, the barrier structure 3 includes a float 31 and an isolation member 32. A float rod 13 is arranged in the liquid storage structure 1. The float 31 is slidably connected to the float rod 13, and the isolation member 32 is arranged on the float 31. The barrier structure of this embodiment adopts the form of a combination of a float and an isolation member. The float is easy to obtain, and the isolation member is arranged on the float, which is convenient to manufacture.

[0052] In this embodiment, the float 31 can float (move up and down) under the buoyancy of the liquid. Since the float 31 is slidably connected to the float rod 13, the float rod can play a certain role in restricting the movement of the float 31 in the left and right directions, avoiding relatively violent shaking or random swinging of the float 31 in the left and right directions, so that the barrier structure 3 can accurately block the induction of the induction field by the induction member when floating to the first liquid level, so as to avoid the failure of the electronic control protection.

[0053] In this embodiment, no special limitation is imposed on the specific material of the float. The float 31 is slidably connected to the float rod 13. For example, the float 31 is sleeved on the float rod 13, and the float 31 can slide up and down along the float rod 13. In other embodiments, the float 31 and the float rod 13 can adopt other connection methods to achieve sliding connection, and this embodiment does not make special limitations.

[0054] In this embodiment, the induction field generating member 4 is a magnet, the induction member 5 is a Hall sensor, and the Hall sensor is electrically connected to the electronic control unit. Additionally, the isolation member 32 can be insulating paper. In this embodiment, the induction field generating member 4 for generating the induction field is a magnet, the induction member 5 for sensing the induction field is a Hall sensor, the Hall sensor is electrically connected to the electronic control unit, and the isolation member 32 is insulating paper, which is used to isolate the magnetic field of the magnet. The Hall sensor has a firm structure, small size, light weight, long service life, is easy to install, and is not afraid of pollution or corrosion by dust, oil, water vapor, salt mist, etc. The electronic control unit of this embodiment can obtain the induction signal of the Hall sensor. When the float 31 has not reached the first liquid level, the Hall sensor senses the magnetic field generated by the magnet. When the float 31 reaches the first liquid level, the insulating paper isolates the magnetic field between the Hall sensor and the magnet, and the electronic control unit controls the liquid inlet structure 2 to stop inputting liquid into the liquid storage structure 1. The electronic control unit can also output a signal for indicating that the liquid level has reached or exceeded the first liquid level, so as to facilitate the user to understand the liquid level situation in the liquid storage structure 1.

[0055] Optionally, the induction member 5 is arranged outside the liquid storage structure 1. In this way, it is convenient to connect the induction member 5 to other components. For example, it is convenient to connect the induction member 5 to the electronic control unit.

[0056] As an example but not a limitation, a first receiving groove is arranged outside the liquid storage structure 1. The first receiving groove is a space for receiving the induction member 5, and the induction member 5 is arranged in the first receiving groove.

[0057] In some embodiments, the induction field generating member 4 is arranged inside the liquid storage structure 1. In this way, the distance between the induction field generating member 4 and the induction member 5 can be shortened, so as to avoid the following phenomenon: the distance between the induction field generating member 4 and the induction member 5 is relatively large, resulting in the induction member 5 not being able to sense the induction field generated by the induction field generating member 4 without the blocking structure 3.

[0058] As an example but not a limitation, a mounting rack is arranged inside the liquid storage structure 1, and the induction field generating member 4 is arranged in the mounting rack.

[0059] In some embodiments, the induction field generating member 4 is arranged outside the liquid storage structure 1. In this way, it is convenient to operate the induction field generating member 4. For example, it is convenient for the user to replace the induction field generating member 4.

[0060] As an example but not a limitation, a second receiving groove is arranged outside the liquid storage structure 1. The second receiving groove is a space for receiving the induction field generating member 4, and the induction field generating member 4 is arranged in the second receiving groove.

[0061] Figure 3 The structural schematic diagram of the liquid storage device provided by the embodiment of the present invention from a perspective is shown inFigure 1 and Figure 3 Optionally, the liquid storage structure 1 includes a box body 11 and a cover body 12. The box body 11 and the cover body 12 are hermetically connected and detachably connected. One end of the float rod 13 is arranged on the cover body 12 or the box body 11. An installation rack 14 extending towards the inside of the liquid storage structure 1 is arranged on the cover body 12, and the induction field generating member 4 is arranged on the installation rack 14. The liquid storage structure 1 of this embodiment includes a box body 11 and a cover body 12. The box body 11 and the cover body 12 are detachably connected. An installation rack is arranged on the cover body 12, and the magnet is fixed on the installation rack 14, which is convenient to manufacture.

[0062] Taking the water storage process of the liquid storage device as an example, the specific working principle of this embodiment is introduced. Please refer to Figure 1 and Figure 2 In this embodiment, the liquid storage structure 1 is used to store water. The liquid inlet structure 2 includes a liquid inlet 21 and an air inlet 22 opened on the liquid storage structure 1. The air inlet 22 is used to connect to an external air extraction mechanism. When the air extraction mechanism extracts air from the liquid storage structure 1 through the air inlet 22, a negative pressure is generated inside the liquid storage structure 1, and water enters the liquid storage structure 1 through the liquid inlet 11. The blocking structure 3 includes a float 31 and a blocking member 32. A float rod 13 is arranged inside the liquid storage structure 1. The float 31 is slidably connected to the float rod 13, and the blocking member 32 is arranged on the float. The induction field generating member 4 is a magnet, the induction member 5 is a Hall sensor, the Hall sensor is electrically connected to the electronic control unit, and the blocking member 32 is an insulating paper. The float 3 slides relative to the float rod 13 under the buoyancy of the water in the liquid storage structure 1, and when it reaches the first water level, the blocking member 32 blocks the induction of the magnetic field of the magnet by the Hall sensor. The electronic control unit outputs a signal indicating that the liquid level has reached or exceeded the first liquid level when the Hall sensor does not sense the magnetic field, and controls the air extraction mechanism to stop extracting air from the liquid storage structure 1, realizing the electronic control protection of the liquid storage device. When the electronic control protection fails, the air extraction mechanism continuously extracts air from the liquid storage structure 1, and the float 3 continues to float along the float rod 2 to the second water level under the buoyancy of the water in the liquid storage structure 1 and blocks the air inlet 22, thereby preventing the gas in the liquid storage structure 1 from being extracted, and further preventing the liquid from entering the liquid storage structure 1, thus realizing the physical protection of the liquid storage device.

[0063] As can be seen from the above, this embodiment can protect the liquid storage device in two ways, namely electronic control protection and physical protection, to avoid accidents caused by the failure of a single protection structure, thereby improving the user experience.

[0064] Figure 4 It is a schematic structural diagram of the cleaning device provided by the embodiment of the present invention from a perspective. Figure 5Schematic structural diagram of the cleaning device provided by the embodiment of the present invention from a perspective. Figure 6 is Figure 5 Schematic cross-sectional structure diagram of A-A in Figures 4 - 6 , the second aspect of the embodiment of the present invention provides a cleaning device, and the cleaning device includes the liquid storage device described in the above embodiment.

[0065] For example, the liquid storage device includes: a liquid storage structure 1 for storing liquid; a liquid inlet structure 2 through which liquid can flow into the liquid storage structure 1; a barrier structure 3, an induction field generating member 4 for generating an induction field, an induction member 5, and an electronic control unit. Among them, the barrier structure 3 is arranged in the liquid storage structure 1, the induction member 5 can sense the induction field, the barrier structure 3 can float under the buoyancy of the liquid, the barrier structure 3 can block the induction of the induction field by the induction member 5 when floating to the first liquid level, and the electronic control unit is used to control the liquid inlet structure 2 to stop inputting liquid into the liquid storage structure 1 when the barrier structure 3 blocks the induction of the induction field by the induction member 5.

[0066] In some embodiments, the cleaning device is a device that can be used to maintain a robot. For example, the cleaning device can be used to clean the mopping member of the robot, and the mopping member is a component provided on the robot for mopping the surface of an object.

[0067] The cleaning device provided by the present invention includes the above liquid storage device. When the liquid storage structure of the liquid storage device collects liquid to the first liquid level, the electronic control unit controls the liquid inlet structure to stop inputting liquid into the liquid storage structure, which can stop the liquid from entering the liquid storage device when the liquid storage device collects liquid to the preset liquid level, avoiding the phenomenon of overflow of the liquid storage device and causing accidents, and improving the user experience.

[0068] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A liquid storage device, characterized in that, it comprises: a liquid storage structure for storing liquid; a liquid inlet structure through which liquid can flow into the liquid storage structure; the liquid inlet structure includes a liquid inlet and a suction port opened on the liquid storage structure, the suction port is used to externally connect an air extraction mechanism, and the air extraction mechanism is used to extract air from the liquid storage structure through the suction port so as to generate negative pressure in the liquid storage structure, and liquid enters the liquid storage structure through the liquid inlet. The blocking structure includes an induction field generating member, an induction member and an electronic control unit for generating an induction field; the air extraction mechanism is used to be electrically connected to the electronic control unit, and the electronic control unit is used to control the air extraction mechanism to stop extracting air from the liquid storage structure when the blocking structure blocks the induction of the induction member to the induction field; the blocking structure is arranged in the liquid storage structure, the induction member can sense the induction field, the blocking structure can float under the buoyancy of the liquid, the blocking structure includes a float and an isolation member, a float rod is arranged in the liquid storage structure, the float is slidably connected to the float rod, the isolation member is arranged on the float, the blocking structure can block the induction of the induction member to the induction field when floating to the first liquid level, and the electronic control unit is used to control the liquid inlet structure to stop inputting liquid into the liquid storage structure when the blocking structure blocks the induction of the induction member to the induction field. The blocking structure is floatingly connected to the suction port, and the blocking structure is further used to stop the liquid inlet structure from inputting liquid into the liquid storage structure when it continues to float along the float rod to the second liquid level and blocks the suction port under the action of liquid buoyancy, so as to realize physical protection of the liquid storage device when the electronic control protection fails.

2. The liquid storage device according to claim 1, characterized in that: the electronic control unit includes an alarm, and the alarm is used to output a signal indicating that the liquid level has reached or exceeded the first liquid level when the blocking structure blocks the induction of the induction member to the induction field.

3. The liquid storage device according to claim 1, characterized in that: the induction member is arranged outside the liquid storage structure.

4. The liquid storage device according to claim 3, characterized in that: the induction field generating member is arranged inside the liquid storage structure.

5. The liquid storage device according to claim 1, characterized in that: the induction field generating member is a magnet, the induction member is a Hall sensor, and the Hall sensor is electrically connected to the electronic control unit.

6. A cleaning device, characterized in that: the cleaning device includes a liquid storage device, and the liquid storage device is the liquid storage device according to any one of claims 1-5.

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