Mobile cleaning robot

Abstract

The invention relates to the technical field of household appliances, in particular to a mobile cleaning robot. The mobile cleaning robot comprises a main machine, a liquid storage box and a water inlet pipe, the liquid storage box and the water inlet pipe are arranged in the main machine, a water injection opening is formed in the circumferential side wall of the main machine, a water inlet is formed in the liquid storage box, one end of the water inlet pipe is communicated with the water injection opening, and the other end of the water inlet pipe is communicated with the water inlet so that clear water can be supplemented into the liquid storage box through the water injection opening. The arrangement of the water inlet pipes and the liquid storage box meets the condition that when the host is horizontally placed, if the water inlet pipes are connected end to end, at least part of the liquid storage box is located in the range of a closed horizontal projection formed by the water inlet pipes connected end to end, and the volume V3 of the liquid storage box located outside the range of the horizontal projection and the volume V1 of the water inlet pipes meet the condition that V3 is smaller than or equal to V1. Therefore, when the host is laterally placed at any angle, the clean water in the liquid storage box can be effectively prevented from overflowing from the water injection port of the water inlet pipe.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a mobile cleaning robot. Background Art

[0002] Current mobile cleaning robots are typically equipped with a reservoir for storing clean water, allowing the release of clean water during the cleaning process to achieve functions such as wetting and wiping the floor. To improve cleaning efficiency and ease of use, mobile cleaning robots are typically equipped with a base station. When the main unit returns to the base station, the water inlet on the main unit, which is connected to the reservoir, can be connected to the water outlet of the base station, allowing the base station to refill the reservoir with clean water.

[0003] However, in actual use, the water inlet of the host often leaks due to changes in the host placement angle (such as placing the host on its side), affecting the user experience. Summary of the Invention

[0004] The object of the present invention is to provide a mobile cleaning robot, which can prevent the water inlet of a main body from leaking due to changes in the placement position of the main body to a certain extent.

[0005] A first aspect of the present invention provides a mobile cleaning robot comprising a main body, a liquid storage box and a water inlet pipe provided in the main body; A water injection port is provided on the circumferential side wall of the main unit, and the liquid storage box is provided with a water inlet. One end of the water inlet pipe is connected to the water injection port, and the other end of the water inlet pipe is connected to the water inlet. When the main unit is placed horizontally, the water inlet pipes connected end to end can form a closed horizontal projection, at least part of the liquid storage box is located within the range of the horizontal projection, and the volume V3 of the liquid storage box located outside the range of the horizontal projection and the volume V1 of the water inlet pipe satisfy: V3≤V1.

[0006] Furthermore, the water inlet pipe includes a first pipe section and a second pipe section; The first end of the first pipe segment is connected to the water injection port, and the second end of the first pipe segment is connected to the first end of the second pipe segment at a predetermined angle and is connected; The liquid storage box is located on the side where the first pipe segment and the second pipe segment form a bad angle, the water inlet is located at the top of the liquid storage box on the side away from the first pipe segment, and the water inlet is connected to the second end of the second pipe segment.

[0007] Furthermore, the inferior angle formed by the first pipe segment and the second pipe segment is 30° to 150°.

[0008] Furthermore, when the host is placed horizontally, the horizontal projection of the liquid storage box is a square; The water inlet is located on one side of the liquid storage box in the width direction, the second pipe section is located on the other side of the liquid storage box in the width direction, and the second pipe section extends along the length direction of the liquid storage box and is arranged close to the liquid storage box.

[0009] Furthermore, the water inlet pipe further includes a third pipe section; The first pipe section and the second pipe section are both arranged close to the bottom of the main unit, the water inlet is located at the top of the side wall of the liquid storage box away from the first pipe section, and the second end of the second pipe section is connected to the water inlet through the third pipe section.

[0010] Furthermore, for a liquid storage box filled with water, when one side of a horizontally placed host is tilted and the theoretical maximum liquid level in the liquid storage box is higher than the highest point of the water inlet pipe, the volume of the liquid storage box between the theoretical maximum liquid level and the highest point of the water inlet pipe is V2, and V2 is less than V1.

[0011] A second aspect of the present invention provides a mobile cleaning robot comprising a host and a base station; The main unit is provided with a liquid storage box, a water inlet pipe and a clean water pump; The host can be docked with the base station, so that the liquid storage box is connected to the liquid storage tank in the base station through the water inlet pipe, and the clean water pump is used to pump the clean water in the liquid storage tank into the liquid storage box, and the clean water pump is configured as follows: When the host is separated from the base station, the clean water pump continues to work for a predetermined time to draw air into the water inlet pipe.

[0012] Furthermore, the outlet of the clean water pump is connected to an overflow pipe, and the overflow pipe extends to the mop of the main machine.

[0013] A third aspect of the present application provides a mobile cleaning robot, comprising a host and a base station; The base station is provided with a liquid storage tank, a water outlet, a fresh water pump and a solenoid valve; The inlet of the fresh water pump can be connected to the liquid storage tank or the external atmosphere through the solenoid valve, and the outlet of the fresh water pump is connected to the water outlet; The host is provided with a liquid storage box and a water inlet pipe connected to the liquid storage box. The base station can be docked with the host to connect the water inlet pipe to the water outlet, and use the clean water pump to pump clean water into the liquid storage box or add air to the water inlet pipe.

[0014] Furthermore, an overflow port is provided on the top of the liquid storage box, the overflow port is connected to an overflow pipe, and the overflow pipe extends to the mop of the host.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The mobile cleaning robot provided in the first aspect of the present invention includes a main body, a liquid storage box and a water inlet pipe. The liquid storage box and the water inlet pipe are both arranged in the main body. A water injection port is provided on the circumferential side wall of the main body, and a water inlet is provided on the liquid storage box. One end of the water inlet pipe is connected to the water injection port, and the other end is connected to the water inlet so that clean water can be added to the liquid storage box through the water injection port.

[0016] The arrangement of the water inlet pipe and the liquid storage box satisfies the following conditions: when the main unit is placed horizontally, if the water inlet pipes are connected end to end, at least a portion of the liquid storage box is located within the enclosed horizontal projection formed by the connected water inlet pipes, and the volume V3 of the liquid storage box outside this horizontal projection and the volume V1 of the water inlet pipe satisfy V3 ​​≤ V1. This effectively prevents the clean water in the liquid storage box from overflowing from the water inlet pipe's inlet port when the main unit is placed on its side at any angle.

[0017] The mobile cleaning robot provided in the second aspect of the present invention includes a main unit and a base station. A liquid storage box, a water inlet pipe and a clean water pump are provided in the main unit. The main unit can be docked with the base station so that the liquid storage box is connected to the liquid storage tank in the base station through the water inlet pipe, and the clean water in the liquid storage tank is pumped into the liquid storage box by using the clean water pump. The clean water pump is configured as follows: when the main unit is separated from the base station, the clean water pump continues to work for a predetermined time to draw air into the water inlet pipe, thereby preventing water from overflowing from the water inlet pipe when the main unit is separated from the base station.

[0018] The mobile cleaning robot provided by the third aspect of the present invention includes a main unit and a base station. The base station is provided with a liquid storage tank, a water outlet, a fresh water pump, and a solenoid valve. The inlet of the fresh water pump can be connected to the liquid storage tank or to the external atmosphere through the solenoid valve, and the outlet of the fresh water pump is connected to the water outlet. The main unit is provided with a liquid storage box and a water inlet pipe connected to the liquid storage box. The base station can be docked with the main unit to connect the water inlet pipe to the water outlet, and use the fresh water pump to pump fresh water into the liquid storage box or to add air to the water inlet pipe. Therefore, after the fresh water pump is used to replenish the liquid storage box with water, the fresh water pump can be used to continue to inject water into the water inlet pipe to effectively prevent water from overflowing from the water inlet after the water inlet of the main unit is disconnected from the water outlet of the base station. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1A schematic structural diagram of a main unit of a mobile cleaning robot provided by an embodiment of the present invention from a first viewing angle; Figure 2 A schematic structural diagram of a main unit of a mobile cleaning robot provided by an embodiment of the present invention from a second viewing angle; Figure 3 A schematic structural diagram of a main unit of a mobile cleaning robot provided by an embodiment of the present invention from a third perspective; Figure 4 A schematic diagram of the structure of a mobile cleaning robot provided by an embodiment of the present invention, in which the host actively pumps water from a base station; Figure 5 This is a structural diagram of the mobile cleaning robot provided by an embodiment of the present invention, in which the host machine is passively replenished with water from a base station.

[0021] Reference numerals: 1-main unit, 2-liquid storage box, 21-water inlet, 3-water inlet pipe, 31-first pipe section, 32-second pipe section, 33-third pipe section, 4-water injection port, 5-clean water pump, 6-base station, 7-liquid storage tank, 8-clean water pump, 9-solenoid valve. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention.

[0024] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0027] Refer to the following Figures 1 to 5 The mobile cleaning robot according to some embodiments of the present application is described.

[0028] The first aspect of the present application provides a mobile cleaning robot, such as Figure 1 and Figure 2 As shown, the mobile cleaning robot includes a main body 1, a liquid storage box 2 and a water inlet pipe 3. The liquid storage box 2 and the water inlet pipe 3 are both arranged in the main body 1. A water injection port 4 is provided on the circumferential side wall of the main body 1, and a water inlet 21 is provided on the liquid storage box 2. One end of the water inlet pipe 3 is connected to the water injection port 4, and the other end is connected to the water inlet 21.

[0029] The mobile cleaning robot also includes a base station 6, which is provided with a liquid storage tank 7 and a water outlet for the clean water in the liquid storage tank 7 to flow out; when the host 1 returns to the base station 6, the water inlet 4 of the host 1 can be connected to the water outlet of the base station 6, so that the clean water in the liquid storage tank 7 can flow into the liquid storage box 2, thereby replenishing the liquid storage box 2 with water.

[0030] In this embodiment, the arrangement of the water inlet pipe 3 and the liquid storage box 2 satisfies the following conditions: when the main unit 1 is placed horizontally (i.e., the axis of the main unit 1 extends in the vertical direction), if the water inlet pipe 3 is connected end to end, at least part of the liquid storage box 2 is located in the closed horizontal projection formed by the water inlet pipes 3 connected end to end (i.e., Figure 1 ), and the volume V3 of the liquid storage box 2 outside the horizontal projection range and the volume V1 of the water inlet pipe satisfy V3≤V1. Therefore, when the main unit 1 is placed on its side at any angle, if the liquid storage box 2 is completely within the horizontal projection of the water inlet pipe 3, the highest point of the water inlet pipe 3 can be guaranteed to be always higher than the liquid storage box 2, thereby preventing the clean water in the liquid storage box 2 from flowing into the water inlet pipe 3 and overflowing through the water injection port 4. If the liquid storage box 2 is partially within the horizontal projection of the water inlet pipe 3, the highest point of the water inlet pipe 3 can be guaranteed to be higher than the liquid storage box 2 in most cases, thereby preventing the clean water in the liquid storage box 2 from flowing into the water inlet pipe 3 and overflowing through the water injection port 4. Even if the placement angle of the main unit 1 causes the highest point of the liquid storage box 2 to be higher than the water inlet pipe 3, water will only flow into the water inlet pipe 3 and will not overflow from the main unit through the water injection port 4 of the water inlet pipe 3.

[0031] It should be noted that, here, side placement means that the host 1 is upright so that its axis is in a roughly horizontal state, for example, the angle between the axis of the host 1 and the horizontal plane is within 15°; side placement at any angle means that the side-placed host 1 is rolled around the axis to any angle.

[0032] In one embodiment of the present application, preferably, Figure 1 and Figure 2 As shown, the water inlet pipe 3 includes a first pipe section 31 and a second pipe section 32. One end of the first pipe section 31 in the longitudinal direction (the first end of the first pipe section 31) is connected to the water filling port 4 of the main unit 1, the other end of the first pipe section 31 in the longitudinal direction (the second end of the first pipe section 31) is connected to one end of the second pipe section 32 in the longitudinal direction (the first end of the second pipe section 32), and the other end of the second pipe section 32 in the longitudinal direction (the second end of the second pipe section 32) is connected to the water inlet 21 of the liquid storage box 2.

[0033] In which, there is a predetermined angle (excluding 0° and 180°) between the first pipe segment 31 and the second pipe segment 32, and the liquid storage box 2 is located in the space on the side of the inferior angle (greater than 0° and less than 180°) formed by the first pipe segment 31 and the second pipe segment 32, so that the water inlet pipe 3 including the first pipe segment 31 and the second pipe segment 32 can form a roughly triangular horizontal projection after being connected end to end, and the horizontal projection has sufficient coverage to accommodate the liquid storage box 2.

[0034] In this embodiment, the angle of the inferior angle formed between the first pipe section 31 and the second pipe section 32 is preferably 30° to 150°; for example, the inferior angle is 45°, 50°, 55°, 65°, 68°, 70°, 72°, 75°, 78°, 80°, 85°, 90°, 95°, 100°, 110°, or 120°. This allows the horizontal projection formed by the end-to-end connection of the water inlet pipe 3 including the first pipe section 31 and the second pipe section 32 to have a larger coverage area, thereby accommodating a liquid storage box 2 with a larger volume.

[0035] In this embodiment, preferably, Figure 1 and Figure 2 As shown, when the main unit 1 is placed horizontally, the horizontal projection of the liquid storage box 2 is a square, so that the liquid storage box 2 has a predetermined length and width; the water injection port 4 is located on one side of the width direction of the liquid storage box 2, and the first pipe section 31 is located on one side of the length direction of the liquid storage box 2. The first end of the first pipe section 31 extends from the side of the width direction of the liquid storage box 2 toward the water injection port 4 and is connected to the water injection port 4, and the second end of the first pipe section 31 extends from the side of the width direction of the liquid storage box 2 away from the water injection port 4.

[0036] The length direction of the second pipe section 32 extends along the length direction of the liquid storage box 2, and the second pipe section 32 is located on the side of the liquid storage box 2 in the width direction away from the water injection port 4, so that the first end of the second pipe section 32 faces the first pipe section 31 and is connected to the first end of the first pipe section 31, and the second end of the second pipe section 32 extends out of the liquid storage box 2 from the side of the liquid storage box 2 in the length direction away from the first pipe section 31.

[0037] The water inlet 21 is provided on the sidewall of the liquid storage box 2, which is located away from the first pipe section 31 in the longitudinal direction. The water inlet 21 is connected to the second end of the second pipe section 32, specifically through the third pipe section 33 described below. This allows the water inlet pipe 3 to form a horizontal projection that covers the liquid storage box 2. The arrangement of the water inlet pipe 3 is simple, effectively reducing the space occupied by the water inlet pipe 3 within the main unit 1.

[0038] In this embodiment, preferably, the second pipe section 32 is disposed adjacent to the liquid storage box 2, and the first pipe section 31 and the second pipe section 32 are both disposed adjacent to the bottom of the main unit 1. That is, when the main unit 1 is placed horizontally, the first pipe section 31 and the second pipe section 32 are also horizontal and disposed at the bottom of the main unit 1. This effectively saves space required for arranging the water inlet pipe 3.

[0039] In this embodiment, preferably, the water inlet 21 of the liquid storage box 2 is located at the top of the side wall thereof to ensure that the liquid storage box 2 can be injected with sufficient water; the water inlet pipe 3 also includes a third pipe section 33, the upper end of the third pipe section 33 is connected to the water inlet 21, and the lower end of the third pipe section 33 is connected to the second end of the second pipe section 32, so that the second pipe section 32 can be set close to the bottom of the main unit 1 and connected to the water inlet 21 at the top of the liquid storage box 2.

[0040] In one embodiment of the present application, preferably, when the water inlet pipe 3 is arranged for the liquid storage box 2 with a predetermined volume, the volume V1 of the water inlet pipe 3 also needs to meet the following requirements.

[0041] like Figure 3 As shown, for the liquid storage box 2 filled with water, when one side of the horizontally placed main unit 1 is tilted, it has a height H. When the tilted height is greater than H, the theoretical maximum liquid level in the main unit 1 will submerge the water inlet 21, but will be lower than the highest point of the water inlet pipe 3. At this time, the clean water in the liquid storage box 2 will flow into the water inlet pipe 3, but will not overflow from the water filling port 4; and when the tilted height of the liquid storage box 2 is less than H, the theoretical maximum liquid level in the main unit 1 will submerge the water inlet 21 and will be higher than the highest point of the water inlet pipe 3. At this time, the clean water in the liquid storage box 2 is at risk of overflowing through the water filling port 4.

[0042] In this embodiment, the volume of the water inlet pipe 3 is set to V1, which needs to satisfy the following requirements: within the range of the liquid storage box 2 being tilted to a height H, the volume of the liquid storage box 2 between its theoretical highest liquid level and the highest point of the water inlet pipe 3 is V2 ( Figure 3 The volume of the shaded area in the middle is smaller than V1, thereby ensuring that clean water will not overflow from the water inlet 4 when the host 1 is placed in a state of tilting on one side.

[0043] The second aspect of the present application provides a mobile cleaning robot, such as Figure 4 As shown, it includes a base station 6 and a host 1 , the base station 6 is used to replenish water for the host 1 , and the host 1 is configured to be able to actively pump water from the base station 6 .

[0044] A liquid storage box 2 and a water inlet pipe 3 are provided within the main unit 1. A water inlet 4 is provided on the circumferential side wall of the main unit 1. One end of the water inlet pipe 3 is connected to the liquid storage box 2, and the other end of the water inlet pipe 3 is connected to the water inlet 4, so that water can be replenished into the liquid storage box 2 through the water inlet pipe 3. The arrangement of the water inlet pipe 3 and the liquid storage box 2 can adopt the arrangement of any of the embodiments provided in the first aspect above, and will not be repeated here.

[0045] In this embodiment, the base station 6 is provided with a liquid storage tank 7 and a water outlet connected to the liquid storage tank 7. When the host 1 returns to the base station 6, the water inlet 4 of the host 1 can be connected to the water outlet; a clean water pump 5 is also provided in the host 1, and a water pumping port is provided on the top of the liquid storage box 2. The inlet of the clean water pump 5 is connected to the water pumping port, so that when the water inlet 4 is connected to the water outlet of the base station 6, the clean water in the liquid storage tank 7 of the base station 6 can be pumped into the liquid storage box 2 of the host 1 by using the clean water pump 5, thereby replenishing the liquid storage box 2 with water.

[0046] At the same time, the clean water pump 5 of the present application is also configured as follows: when the liquid storage box 2 completes water replenishment and the water inlet 4 is disconnected from the water outlet of the base station 6, the clean water pump 5 continues to operate for a period of time to allow some air to enter the water inlet pipe 3, thereby effectively preventing water from overflowing from the water inlet 4 after the water inlet 4 is disconnected from the water outlet.

[0047] In this embodiment, preferably, the outlet of the clean water pump 5 is connected to an overflow pipe, and the overflow pipe extends to the mop of the mobile cleaning robot, so that when the clean water pump 5 continues to operate, the clean water it pumps out can be delivered to the mop to wet the mop.

[0048] The third aspect of the present application provides a mobile cleaning robot, such as Figure 5 As shown, it includes a base station 6 and a host 1. The base station 6 is used to replenish water for the host 1, and the base station 6 is configured to be able to actively replenish water for the host 1.

[0049] A liquid storage box 2 and a water inlet pipe 3 are provided within the main unit 1. A water inlet 4 is provided on the circumferential side wall of the main unit 1. One end of the water inlet pipe 3 is connected to the liquid storage box 2, and the other end of the water inlet pipe 3 is connected to the water inlet 4, so that water can be replenished into the liquid storage box 2 through the water inlet pipe 3. The arrangement of the water inlet pipe 3 and the liquid storage box 2 can adopt the arrangement of any of the embodiments provided in the first aspect above, and will not be repeated here.

[0050] In this embodiment, the base station is provided with a water outlet, a liquid storage tank 7, a fresh water pump 8 and a solenoid valve 9. The solenoid valve 9 is a multi-channel solenoid valve 9. The inlet of the fresh water pump 8 can be connected to the outlet of the liquid storage tank 7 or to the external atmosphere through the solenoid valve 9, and the outlet of the fresh water pump 8 is connected to the water outlet of the base station 6.

[0051] When the host 1 returns to the base station 6, the water inlet 4 of the host 1 can be connected to the water outlet of the base station 6. At this time, the solenoid valve 9 can switch the fresh water pump 8 to connect to the liquid storage tank 7, so that the fresh water in the liquid storage tank 7 can be pumped into the liquid storage box 2 of the host 1 by the fresh water pump 8, thereby replenishing the liquid storage box 2. At the same time, when the liquid storage box 2 has completed the water replenishment, the solenoid valve 9 can switch the fresh water pump 8 to connect to the external atmosphere, so that the fresh water pump 8 can continue to input air into the water inlet pipe 3, thereby effectively preventing water from overflowing from the water inlet 4 after the water inlet 4 is disconnected from the water outlet.

[0052] In this embodiment, preferably, an overflow port is provided on the top of the liquid storage box 2, and an overflow pipe is connected to the overflow port, and the overflow pipe extends to the mop of the main unit 1, so that when the clean water pump 8 injects air into the water inlet pipe 3, the clean water in the liquid storage box 2 can overflow to the mop.

[0053] Finally, it should be noted that 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 above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mobile cleaning robot, characterized in that: It includes a main unit, a liquid storage box and a water inlet pipe arranged in the main unit; A water injection port is provided on the circumferential side wall of the main unit, and the liquid storage box is provided with a water inlet. One end of the water inlet pipe is connected to the water injection port, and the other end of the water inlet pipe is connected to the water inlet. When the main unit is placed horizontally, the water inlet pipes connected end to end can form a closed horizontal projection, at least part of the liquid storage box is located within the range of the horizontal projection, and the volume V3 of the liquid storage box located outside the range of the horizontal projection and the volume V1 of the water inlet pipe satisfy: V3≤V1.

2. The mobile cleaning robot according to claim 1, characterized in that: The water inlet pipe includes a first pipe section and a second pipe section; The first end of the first pipe segment is connected to the water injection port, and the second end of the first pipe segment is connected to the first end of the second pipe segment at a predetermined angle and is connected; The liquid storage box is located on the side where the first pipe segment and the second pipe segment form a bad angle, the water inlet is located at the top of the liquid storage box on the side away from the first pipe segment, and the water inlet is connected to the second end of the second pipe segment.

3. The mobile cleaning robot according to claim 2, characterized in that: The inferior angle formed by the first pipe segment and the second pipe segment is in a range of 30° to 150°.

4. The mobile cleaning robot according to claim 2, characterized in that: When the main unit is placed horizontally, the horizontal projection of the liquid storage box is a square; The water inlet is located on one side of the liquid storage box in the width direction, the second pipe section is located on the other side of the liquid storage box in the width direction, and the second pipe section extends along the length direction of the liquid storage box and is arranged close to the liquid storage box.

5. The mobile cleaning robot according to claim 2, characterized in that: The water inlet pipe also includes a third pipe section; The first pipe section and the second pipe section are both arranged close to the bottom of the main unit, the water inlet is located at the top of the side wall of the liquid storage box away from the first pipe section, and the second end of the second pipe section is connected to the water inlet through the third pipe section.

6. The mobile cleaning robot according to claim 5, characterized in that: For a liquid storage box filled with water, when one side of a horizontally placed host is tilted and the theoretical maximum liquid level in the liquid storage box is higher than the highest point of the water inlet pipe, the volume of the liquid storage box between the theoretical maximum liquid level and the highest point of the water inlet pipe is V2, and V2 is less than V1.

7. A mobile cleaning robot, characterized in that: Including host and base station; The main unit is provided with a liquid storage box, a water inlet pipe and a clean water pump; The host can be docked with the base station, so that the liquid storage box is connected to the liquid storage tank in the base station through the water inlet pipe, and the clean water pump is used to pump the clean water in the liquid storage tank into the liquid storage box, and the clean water pump is configured as follows: When the host is separated from the base station, the clean water pump continues to operate for a predetermined time to draw air into the water inlet pipe.

8. The mobile cleaning robot according to claim 7, characterized in that: The outlet of the clean water pump is connected to an overflow pipe, and the overflow pipe extends to the mop of the main machine.

9. A mobile cleaning robot, characterized in that: Including host and base station; The base station is provided with a liquid storage tank, a water outlet, a fresh water pump and a solenoid valve; The inlet of the fresh water pump can be connected to the liquid storage tank or the external atmosphere through the solenoid valve, and the outlet of the fresh water pump is connected to the water outlet; The host is provided with a liquid storage box and a water inlet pipe connected to the liquid storage box. The base station can be docked with the host to connect the water inlet pipe to the water outlet, and use the clean water pump to pump clean water into the liquid storage box or add air to the water inlet pipe.

10. The mobile cleaning robot according to claim 9, characterized in that: An overflow port is provided on the top of the liquid storage box, the overflow port is connected to an overflow pipe, and the overflow pipe extends to the mop of the main machine.

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