Robot cleaner equipped with heater

Abstract

A robot cleaner according to an embodiment of the present invention comprises: a main body; a first driving wheel; a second driving wheel; a water tank; and a heater. The first driving wheel is provided to the outside of a first line that is parallel to the center line, and the second driving wheel is provided to the outside of a second line that is parallel to the center line. The heater is provided in the main body separately from the water tank, and is disposed between the first line and the second line. According to an embodiment of the present invention, it is possible to minimize variation in the center of gravity of the robot cleaner caused by whether or not the heater is filled with water, the robot cleaner is stably supported by the first driving wheel and the second driving wheel, and the robot cleaner can travel in a stable manner regardless of whether the heater is used.

Description

Robot vacuum cleaner with heater

[0001] The present invention relates to a robot vacuum cleaner, and more particularly, to a robot vacuum cleaner equipped with a water tank for storing water used for cleaning and a heater for heating water supplied from the water tank.

[0002] A robot vacuum cleaner, which includes a motor, various sensors, and artificial intelligence (AI), can be configured to move around and clean the area that needs cleaning on its own.

[0003] A robot vacuum cleaner can be configured to suck up dust, sweep up dust, or wipe the cleaning surface using a mop.

[0004] Some robot vacuum cleaners are equipped with a water tank, and some robot vacuum cleaners are used to perform mopping using the water stored in the water tank.

[0005] In a robot vacuum cleaner, the mop can be used by being attached to a mop plate, and mopping can be done while the mop plate rotates.

[0006] Although not related to a robot vacuum cleaner, Korean Patent Publication No. KR10-0470320B1 (registration date: 2005.01.27.) (hereinafter referred to as “prior document 1”) discloses a vacuum cleaner in which a path for water to pass through is formed in the center of a rotating mop plate, and the path is positioned in the center of a driving shaft that rotates the mop plate.

[0007] However, as mentioned above, prior art document 1 is not about a robot vacuum cleaner, and is configured to clean by the user holding and pushing a handle connected to the main body.

[0008] Prior art document 1 is configured to heat the water inside the water tank by having a heater installed inside the water tank. However, there are limitations in that the water tank and the heater must be manufactured as one piece, it is very difficult to separate the water tank from the main body, and in particular, there is a problem in that it is difficult to use both unheated water (raw water) and hot water (or steam).

[0009] Regarding robot vacuum cleaners, Chinese Utility Model Registration Publication No. CN220089389U (registration date: 2023.11.28.) (hereinafter referred to as “prior document 2”) discloses a robot vacuum cleaner having a driving part for rotating a mop.

[0010] However, in the case of prior literature 2, the use of hot water or steam is not considered, and improvement is required.

[0011] In the case of a robot vacuum cleaner, it must be able to run smoothly on its own, and even when using raw water, hot water, or steam, it must be able to use steam and run smoothly and stably. However, prior documents 1 and 2 do not take these points into consideration, and improvement is required.

[0012] As demand for robot vacuum cleaners with various functions and conveniences has increased recently, the internal structure of robot vacuum cleaners has become increasingly complex due to the numerous parts. In this case, continuous research and development is required for the layout of robot vacuum cleaners that can smoothly perform each function.

[0013] The problem to be solved by the present invention is to provide a robot cleaner that enables stable operation of the robot cleaner and stable use of the heater regardless of whether water is provided inside the heater that generates hot water or steam.

[0014] The present invention aims to provide a robot vacuum cleaner that prevents heat generated by the use of a heater from being transferred to and damaging surrounding components. Components such as semiconductors, capacitors, and resistors mounted on a PCB are highly sophisticated components that can be vulnerable to heat and require protection.

[0015] The problem to be solved by the present invention is to provide a robot vacuum cleaner that can smoothly use both unheated water (raw water) and hot water (or steam) while preventing unnecessary use of a heater.

[0016] The problem to be solved by the present invention is to provide a robot cleaner in which the movement of raw water and hot water (or steam) can occur along the same path with respect to a mop while distinguishing between a path that does not pass through a heater and a path that passes through a heater.

[0017] A robot vacuum cleaner according to one embodiment of the present invention comprises a main body, a first driving wheel, a second driving wheel, a water tank, and a heater.

[0018] The first driving wheel may be provided on the main body on the outside of a first line parallel to a center line that crosses the center of the main body forward and backward.

[0019] The second driving wheel may be positioned on the opposite side of the first driving wheel with respect to the center line, and may be provided on the main body on the outer side of a second line parallel to the center line.

[0020] The above water tank is provided in the above body and is configured to store water.

[0021] The heater is provided in the main body separately from the water tank and is configured to heat water supplied from the water tank.

[0022] The heater is placed between the first line and the second line.

[0023] The heater comprises a heater casing having a space therein to accommodate water; a heat source provided inside the heater casing; a heater inlet forming an entrance to the heater casing; and a heater outlet forming an exit from the heater casing.

[0024] The above robot vacuum cleaner comprises a control unit. The control unit is configured to control each component provided in the robot vacuum cleaner.

[0025] The above control unit is arranged in the main body and includes a PCB.

[0026] The above control unit can be placed in a first area of ​​the main body.

[0027] The above heater is placed in a second area that does not overlap with the first area on the plan view.

[0028] The above heater outlet may be provided further away from the control unit than the heater inlet.

[0029] The above robot vacuum cleaner may include a first pump.

[0030] The first pump may be provided in the main body and configured to move water from the water tank to the heater.

[0031] The above control unit is configured to control the operation of the heater and the first pump.

[0032] The above robot vacuum cleaner includes a mop.

[0033] The above rag is provided on the lower side of the main body.

[0034] The water stored in the water tank is supplied toward the mop after selectively passing through the heater.

[0035] The above robot vacuum cleaner comprises a mop plate and a mop actuator.

[0036] The above map plate is rotatably connected to the lower side of the main body.

[0037] The above-mentioned map actuator is provided in the main body and is configured to rotate the map plate.

[0038] The above mop is attached to the lower side of the above mop plate.

[0039] The above robot vacuum cleaner comprises a first euro and a second euro.

[0040] The first flow path forms a flow path through which water bypassing the heater flows. The first flow path forms a flow path through which water is sprayed toward the mop.

[0041] The second flow path forms a flow path through which water passing through the heater moves. The second flow path forms a flow path through which water is sprayed toward the mop.

[0042] The above mop can be divided into a first mop and a second mop.

[0043] The first flow path is connected to the water tank. The first flow path can be branched toward the first mop and the second mop.

[0044] The second flow path is connected to the water tank. The second flow path can be branched toward the first mop and the second mop.

[0045] The above robot vacuum cleaner may include a second pump.

[0046] The second pump may be provided in the main body and configured to move water from the water tank.

[0047] The above robot vacuum cleaner may include a valve. The valve may include a valve inlet connected to the second pump, a first valve outlet communicating with or blocking the valve inlet, and a second valve outlet communicating with or blocking the valve inlet.

[0048] The above first euro can be connected to the above first valve outlet.

[0049] The above second euro can be connected to the second valve outlet and the heater.

[0050] The above robot vacuum cleaner may include a water treatment filter. The water treatment filter is provided in the second flow path. The water treatment filter is provided upstream of the heater.

[0051] The above water treatment filter may be configured to filter calcium or magnesium components from raw water. The water treatment filter may be configured to include at least one of an ion exchange resin, polyphosphate, and a hardness reduction catalyst.

[0052] The above-mentioned map plate may include a plate inlet and a plate outlet. The plate inlet is connected to the first flow path and the second flow path. The plate outlet is connected to the plate inlet and is configured to discharge water.

[0053] The above map plate can be divided into a first map plate and a second map plate.

[0054] The above first map plate can be rotatably coupled to the lower side of the main body so as to overlap with the first line.

[0055] The second map plate can be rotatably coupled to the lower side of the main body so as to overlap with the second line.

[0056] The above-described map actuator can be divided into a first map actuator and a second map actuator.

[0057] The above first map actuator is provided in the main body and is configured to rotate the first map plate.

[0058] The second map actuator is provided in the main body and is configured to rotate the second map plate.

[0059] The first map actuator and the second map actuator may be arranged in a third region that does not overlap with the first region and the second region on a plan view.

[0060] The above robot vacuum cleaner may include a dust bin into which dust is drawn and stored.

[0061] The above dustbin may be placed in a fourth area that does not overlap with the first area, the second area, and the third area on the plan view.

[0062] A robot cleaner according to one embodiment of the present invention comprises a main body, a first driving wheel, a second driving wheel, a water tank, and a heater. The heater is provided in the main body separately from the water tank, and is arranged between a first line and a second line. According to an embodiment of the present invention, the change in the center of gravity of the robot cleaner depending on whether or not the heater is filled with water can be minimized, stable support is achieved by the first driving wheel and the second driving wheel, and the robot cleaner can travel stably regardless of whether or not the heater is used.

[0063] In a robot vacuum cleaner according to one embodiment of the present invention, the control unit is arranged in a first region of the main body, and the heater is arranged in a second region that does not overlap with the first region on a plan view. According to an embodiment of the present invention, heat generated by the heater can be prevented or minimized from being transferred to the control unit, thereby preventing damage to the control unit.

[0064] A robot vacuum cleaner according to one embodiment of the present invention may include a first mop actuator that rotates a first mop plate and a second mop actuator that rotates a second mop plate. The first mop actuator and the second mop actuator may be arranged in a third region that does not overlap with the first region and the second region on a plan view. According to an embodiment of the present invention, it is possible to prevent or minimize heat generated from a heater from being transferred to the first mop actuator and the second mop actuator, and to prevent malfunction and damage to the first mop actuator and the second mop actuator.

[0065] According to one embodiment of the present invention, a robot vacuum cleaner may include a dustbin, wherein the dustbin may be placed in a fourth region that does not overlap with the first region, the second region, and the third region on a plan view. Accordingly, an increase in the vertical height of the robot vacuum cleaner can be prevented, the center of gravity of the robot vacuum cleaner can be maintained low, and stable operation can be achieved.

[0066] In a robot vacuum cleaner according to one embodiment of the present invention, a first flow path is formed as a flow path through which water bypassing the heater moves and is sprayed toward the mop, and a second flow path is formed as a flow path through which water passing through the heater moves and is sprayed toward the mop. According to an embodiment of the present invention, unheated water (raw water) is moved through the first flow path and then used, and heated water (hot water or steam) is moved through the second flow path and then used, thereby preventing unnecessary use of the heater.

[0067] A robot vacuum cleaner according to one embodiment of the present invention includes a first flow path and a second flow path, and a mop plate includes a plate inlet and a plate outlet. Accordingly, the respective raw water and hot water (or steam) can be used quickly, and the water or steam can be utilized smoothly in the mop. Furthermore, by providing a water treatment filter in the second flow path, the formation of scale can be prevented even when raw water and hot water (or steam) move through the same flow path in the mop plate.

[0068] FIG. 1 is a perspective view illustrating a robot vacuum cleaner according to one embodiment of the present invention.

[0069] FIG. 2 is a side view illustrating a robot vacuum cleaner according to one embodiment of the present invention.

[0070] FIG. 3 is a plan view illustrating a robot vacuum cleaner according to one embodiment of the present invention.

[0071] FIG. 4 is a plan view illustrating the interior of a robot vacuum cleaner according to one embodiment of the present invention.

[0072] FIG. 5 is a drawing showing the movement of water in a robot vacuum cleaner according to one embodiment of the present invention.

[0073] FIG. 6 is a drawing schematically showing some components of a robot vacuum cleaner according to one embodiment of the present invention and the movement of water stored in a water tank (120).

[0074] FIG. 7 is a drawing showing a configuration of a first flow path, a second flow path, and a connection between the first flow path and the second flow path in a robot vacuum cleaner according to one embodiment of the present invention.

[0075] FIG. 8 is a drawing showing a first flow path and a second flow path connected to a valve in a robot vacuum cleaner according to one embodiment of the present invention.

[0076] FIG. 9 is a diagram illustrating a part of a configuration of a robot vacuum cleaner according to one embodiment of the present invention, and is a perspective view illustrating a joint portion of a mop plate and a mop actuator in cross-section.

[0077] Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings to explain the present invention in more detail. Like reference numbers designate like components throughout the detailed description.

[0078] The X, Y, and Z directions shown in the drawing are each orthogonal to each other. The X direction can be understood as a direction facing forward, the Y direction can be understood as a direction facing left, and the Z direction can be understood as a direction facing upward.

[0079] FIG. 1 is a perspective view illustrating a robot vacuum cleaner (1) according to one embodiment of the present invention.

[0080] Fig. 2 is a side view illustrating a robot vacuum cleaner (1) according to one embodiment of the present invention.

[0081] Figure 3 is a plan view illustrating a robot vacuum cleaner (1) according to one embodiment of the present invention.

[0082] Figure 4 is a plan view showing the inside of a robot vacuum cleaner (1) according to one embodiment of the present invention.

[0083] Figure 5 is a drawing showing the movement of water in a robot vacuum cleaner (1) according to one embodiment of the present invention. The movement of water is indicated by a straight arrow.

[0084] Figures 4 and 5 illustrate a form in which the upper side of the main body (100) is open so that components inside the main body (100) are displayed.

[0085] The robot cleaner (1) according to an embodiment of the present invention is placed on a floor surface (B) and moves along the floor surface (B). The floor surface (B) may be a target for cleaning. Accordingly, the following description will be made with the up-down direction defined based on the state in which the robot cleaner (1) is placed on the floor surface (B) so that it can clean according to its intended purpose.

[0086] A robot vacuum cleaner (1) according to an embodiment of the present invention comprises a main body (100).

[0087] The main body (100) may form the overall exterior of the robot cleaner (1) or may be formed in the form of a frame. Each component of the robot cleaner (1) may be combined into the main body (100), and some components of the robot cleaner (1) may be accommodated inside the main body (100).

[0088] A robot vacuum cleaner (1) according to an embodiment of the present invention may include a bumper (110) to absorb external shock and / or detect contact with an external object. The bumper (110) may be coupled to the edge of the main body (100), and at this time, the bumper (110) may be configured to be movable relative to the main body (100). The bumper (110) may be coupled to the front edge of the main body (100).

[0089] A plurality of elastic bodies (not shown) may be provided between the bumper (110) and the main body (100), and the bumper (110) may be elastically supported by the elastic bodies against the main body (100). When the bumper (110) comes into contact with an external object and is pressed toward the main body (100), the elastic bodies are elastically deformed (compressed), and then the bumper (110) may be restored to its original position when the elastic bodies are elastically restored.

[0090] In an embodiment of the present invention, the main body (100) may be formed in a form in which the size (width or diameter) in the horizontal direction (direction parallel to X and Y) is larger than the size (height) in the vertical direction (direction parallel to Z). Such a main body (100) can help the robot cleaner (1) to have a stable structure and provide a structure that is advantageous in avoiding obstacles when the robot cleaner (1) moves (drives).

[0091] When viewed from above or below, the body (100) can be formed in various shapes, such as circular, oval, or square.

[0092] Meanwhile, as described in the embodiment of the present invention, the robot cleaner (1) is composed of several parts and has a structural characteristic of a relatively flat structure, so reduction of the space occupied by the components (parts) of the robot cleaner (1) or efficient arrangement is considered as a very important factor in the design of the robot cleaner (1).

[0093] A robot vacuum cleaner (1) according to an embodiment of the present invention includes a water tank (120) in which water is stored, and is configured to discharge the water stored in the water tank (120) for use as needed.

[0094] A robot vacuum cleaner (1) according to an embodiment of the present invention includes a heater (400).

[0095] A robot vacuum cleaner (1) according to an embodiment of the present invention comprises one or more pumps. Each pump described in the embodiment of the present invention may be formed in the same form as a conventional water pump.

[0096] The water in the water tank (120) can be used for cleaning by being supplied to the outside of the robot cleaner (1) by a pump provided in the robot cleaner (1).

[0097] In a robot vacuum cleaner (1) according to an embodiment of the present invention, water from a water tank (120) can be supplied toward a mop (705), and thus mop cleaning can be performed while the water wets the mop (705).

[0098] A water tank (120) can be provided inside the main body (100). The water tank (120) can be detachably connected to the main body (100).

[0099] A robot cleaner (1) according to an embodiment of the present invention comprises a drive wheel (102). The drive wheel (102) is coupled to the main body (100) so as to rotate around a rotation axis in the left-right direction (parallel to Y). The drive wheel (102) may be provided on the lower side of the main body (100). The lower end of the drive wheel (102) is positioned lower than the lower end of the main body (100) and touches the floor surface (B). In the robot cleaner (1), two drive wheels (102) are provided, and the drive wheels (102) are respectively provided at points tilted to the left and right of the main body (100). By the operation of the drive wheels (102), the robot cleaner (1) can move on the floor surface (B).

[0100] In a robot vacuum cleaner (1) according to an embodiment of the present invention, the driving wheel (102) is divided into a first driving wheel (102a) and a second driving wheel (102b). The first driving wheel (102a) and the second driving wheel (102b) support the load of the robot vacuum cleaner (1) while making contact with the floor surface (B).

[0101] When the first driving wheel (102a) is provided on the left side of the main body (100), the second driving wheel (102b) is provided on the right side of the main body (100). When the first driving wheel (102a) is provided on the right side of the main body (100), the second driving wheel (102b) is provided on the left side of the main body (100).

[0102] The first driving wheel (102a) and the second driving wheel (102b) are each coupled to rotate around a horizontal rotation axis in the main body (100). The rotation axis of the first driving wheel (102a) and the rotation axis of the second driving wheel (102b) may be formed parallel to the left-right direction (Y direction). In the main body (100), the first driving wheel (102a) and the second driving wheel (102b) may be formed to rotate in conjunction with each other, or may be formed to rotate individually.

[0103] The first driving wheel (102a) and the second driving wheel (102b) are provided on both sides with the center line as the center.

[0104] The center line is an imaginary reference line (RL) that crosses the center of the main body (100) in the front-back direction (parallel to the X direction).

[0105] In the robot cleaner (1) according to an embodiment of the present invention, the first driving wheel (102a) is arranged on the outside of the first line (L1). That is, the first driving wheel (102a) is arranged further outside than the first line (L1). The first line (L1) is a reference line (RL) of a virtual object that is parallel to the center line. The first line (L1) may be spaced to the left (Y direction) from the center line. When the left-right width of the main body (100) is D1, the distance (D2) between the center line and the first line (L1) may be approximately D1 / 4. When the left-right width of the main body (100) is D1, the distance (D2) between the center line and the first line (L1) may be 1 / 4 to 2 / 5 of D1.

[0106] The first driving wheel (102a) may be positioned further outward than the first line (L1), or may be positioned so that the inner end of the first driving wheel (102a) is positioned on the first line (L1).

[0107] In the robot cleaner (1) according to the embodiment of the present invention, the second driving wheel (102b) is arranged on the outside of the second line (L2). That is, the second driving wheel (102b) is arranged further outside than the second line (L2). The second line (L2) is a reference line (RL) of a virtual object that is parallel to the center line. The second line (L2) may be spaced to the right (in the opposite direction of the Y direction) from the center line. When the left-right width of the main body (100) is D1, the distance (D3) between the center line and the second line (L2) may be approximately D1 / 4. When the left-right width of the main body (100) is D1, the distance (D3) between the center line and the second line (L2) may be 1 / 4 to 2 / 5 of D1.

[0108] The second driving wheel (102b) may be positioned further outward than the second line (L2), or may be positioned so that the inner end of the second driving wheel (102b) is positioned on the second line (L2).

[0109] In the robot vacuum cleaner (1) according to an embodiment of the present invention, the center of the water tank (120) is placed between the first line (L1) and the second line (L2).

[0110] A robot cleaner (1) according to an embodiment of the present invention comprises a drive actuator (130). The drive actuator (130) may comprise an electric motor. The drive actuator (130) is connected to a first drive wheel (102a) and / or a second drive wheel (102b) to transmit rotational power to the first drive wheel (102a) and / or the second drive wheel (102b). In the robot cleaner (1) according to an embodiment of the present invention, one drive actuator (130) may be provided, or two drive actuators may be provided. When two drive actuators (130) are provided, one drive actuator (130) may drive the first drive wheel (102a), and the other drive actuator (130) may drive the second drive wheel (102b).

[0111] In a robot vacuum cleaner (1) according to an embodiment of the present invention, a driving actuator (130) may be placed between a first line (L1) and a second line (L2).

[0112] A robot cleaner (1) according to an embodiment of the present invention may include an auxiliary wheel (103). The auxiliary wheel (103) is provided on the lower side of the main body (100) and may support the robot cleaner (1) together with the driving wheel (102). However, when the mop (705) comes into contact with the floor surface (B), the auxiliary wheel (103) may be separated from the floor surface.

[0113] In the main body (100), the auxiliary wheel (103) may be provided in front of the driving wheel (102). The auxiliary wheel (103) may be provided on the center line (reference line (RL)). The auxiliary wheel (103) is coupled to rotate around a horizontal rotation axis in the main body (100).

[0114] A robot vacuum cleaner (1) according to an embodiment of the present invention comprises a mop (705). The mop (705) can be divided into a first mop (705a) and a second mop (705b).

[0115] The mop (705) is provided on the lower side of the main body (100) and is configured to come into contact with the floor surface. Accordingly, as the robot cleaner (1) moves, the mop (705) can clean the floor surface, thereby performing mopping (705).

[0116] A robot cleaner (1) according to an embodiment of the present invention comprises a mop plate (700). In the robot cleaner (1) according to an embodiment of the present invention, the mop plate (700) and the mop (705) may be provided as a pair, and at this time, one mop (705) is coupled to one mop plate (700). (A first mop (705a) is coupled to a first mop plate (700a), and a second mop (705b) is coupled to a second mop plate (700b).)

[0117] The map plate (700) is coupled to the lower side of the main body (100) and is configured to rotate relative to the main body (100).

[0118] The map plate (700) is formed to have a predetermined area and is formed in the form of a flat plate or a flat frame. The map plate (700) is generally laid horizontally, and accordingly, the horizontal width (or diameter) is formed in a form sufficiently larger than the vertical height. The bottom surface of the map plate (700) coupled to the main body (100) may be parallel to the bottom surface (B), or may be inclined with the bottom surface (B).

[0119] The map plate (700) may be formed in a circular plate shape, and the bottom surface of the map plate (700) may be generally circular.

[0120] In the map plate (700), holes penetrating in the vertical direction can be repeatedly formed along the circumference.

[0121] The map plate (700) can be formed in an overall rotationally symmetrical shape.

[0122] The rotational axis (RA) of the map plate (700) is formed at the center of the map plate (700). The rotational axis (RA) of the map plate (700) may be formed along the vertical direction or may be formed generally along the vertical direction.

[0123] In a robot cleaner (1) according to an embodiment of the present invention, a pair of mop plates (700) (a first mop plate (700a) and a second mop plate (700b)) may be formed identically to each other, or may be formed symmetrically with respect to a center line crossing the front and rear of the robot cleaner (1). If one mop plate (700) is positioned on the left side of the robot cleaner (1), the other mop plate (700) may be positioned on the right side of the robot cleaner (1), and in this case, the pair of mop plates (700) may be symmetrical with respect to the center line.

[0124] The mop (705) overlaps with the mop plate (700) and is joined to the lower side of the mop plate (700).

[0125] The mop (705) is formed so that the bottom surface facing the floor has a predetermined area, and the mop (705) is formed in a flat shape. The mop (705) is formed so that the horizontal width (or diameter) is sufficiently larger than the vertical height. The bottom surface of the mop (705) may be parallel to the floor surface (B), or may be inclined with the floor surface (B).

[0126] The bottom surface of the mop (705) may be generally circular. The mop (705) may have an overall rotationally symmetrical shape. The mop (705) may be made of various materials that can wipe the floor surface (B) while in contact with the floor surface (B). The bottom surface of the mop (705) may be made of a cloth made of woven or knitted fabric, a non-woven fabric, and / or a brush having a predetermined area.

[0127] The mop (705) is coupled to the mop plate (700) and is configured to rotate together with the mop plate (700).

[0128] In one embodiment, the mop (705) can be fixedly coupled to the bottom surface of the mop plate (700).

[0129] In another embodiment, the mop (705) can be attached to the bottom of the mop plate (700).

[0130] The mop (705) can be attached to and detached from the mop plate (700) using various devices and methods. In one embodiment, at least a portion of the mop (705) can be attached to the mop plate (700) by being caught, fitted, or the like. In another embodiment, a separate device, such as a clamp, may be provided to attach the mop (705) and the mop plate (700). In yet another embodiment, a pair of fastening devices that are coupled and separated from each other (specific examples of fastening devices include a pair of magnets that are attracted to each other, a pair of Velcro that are coupled to each other, or a pair of buttons (a female button and a male button) that are coupled to each other) may be fixed to the mop (705) and the other end may be fixed to the mop plate (700).

[0131] When the mop (705) is coupled to the mop plate (700), the mop (705) and the mop plate (700) can be coupled in an overlapping manner, and the mop (705) can be coupled to the mop plate (700) so that the center of the mop (705) is aligned with the center of the mop plate (700).

[0132] As each mop plate (700) to which a mop (705) is combined rotates around each rotation axis (RA), the mop (705) quality of the floor surface (B) is achieved by the mop (705).

[0133] A pair of mops (705) (a first mop (705a) and a second mop (705b)) may be identical to each other. If one mop (705) is positioned on the left side of the robot cleaner (1), the other mop (705) may be positioned on the right side of the robot cleaner (1), and in this case, the pair of mops (705) (a first mop (705a) and a second mop (705b)) may be symmetrical to each other.

[0134] A heater (400) is configured to heat water supplied from a water tank (120). The heater (400) is provided on a path from the water tank (120) to a mop (705) and is configured to heat water passing through the path. As the water is heated by the heater (400), the water can be transformed into hot water or steam, and this hot water or steam can be supplied to the mop (705).

[0135] Even when the heater (400) is not operating, water passing through the above-mentioned path can be supplied to the mop (705) via the heater (400), and thus, unheated water (raw water) can be supplied to the mop (705).

[0136] A robot vacuum cleaner (1) according to an embodiment of the present invention may include a first pump (161). The first pump (161) moves water through the above-described path.

[0137] The first pump (161) is connected between the water tank (120) and the heater (400) and moves water from the water tank (120) toward the heater (400).

[0138] As described above, when the robot cleaner (1) is equipped with a first mop (705a) and a second mop (705b), the portion of the flow path downstream of the heater (400) can be branched to face the first mop (705a) and the second mop (705b), respectively.

[0139] The heater (400) is configured to allow water to move through its interior and heat the water contained therein.

[0140] In a robot vacuum cleaner (1) according to an embodiment of the present invention, the heater (400) is provided in the main body (100) separately from the water tank (120).

[0141] The heater (400) is placed between the first line (L1) and the second line (L2) on the plan view.

[0142] When the robot cleaner (1) is in operation, water stored in the water tank (120) may or may not be used. In addition, when the robot cleaner (1) is in operation, the heater (400) may or may not be filled with water.

[0143] The robot cleaner (1) according to an embodiment of the present invention is configured such that its center of gravity is located between a first line (L1) and a second line (L2). In one embodiment, the center of gravity of the robot cleaner (1) may be configured to be located on the center line.

[0144] In a robot cleaner (1) according to an embodiment of the present invention, a heater (400) is placed between a first line (L1) and a second line (L2), so that when water is filled inside the heater (400), the center of gravity of the robot cleaner (1) is located between the first line (L1) and the second line (L2), and even when water is not filled inside the heater (400), the center of gravity of the robot cleaner (1) is located between the first line (L1) and the second line (L2).

[0145] In this way, according to the robot cleaner (1) according to the embodiment of the present invention, the change in the center of gravity of the robot cleaner (1) depending on whether or not water is filled inside the heater (400) can be minimized, stable support is provided by the first driving wheel (102a) and the second driving wheel (102b) regardless of whether or not water is filled inside the heater (400), and the robot cleaner (1) can travel stably regardless of whether or not the heater (400) is used.

[0146] A robot vacuum cleaner (1) according to an embodiment of the present invention comprises a plurality of actuators (200, 200a, 200b, 130), a suction port (104), a dust bin (105), a fan motor (106), and a battery (107).

[0147] Each actuator (200, 200a, 200b, 130) may include a motor and gears, etc.

[0148] The map actuator (200) can be divided into a first map actuator (200a) and a second map actuator (200b).

[0149] The map actuator (200) may be configured to transmit rotational power to the map plate (700) to rotate the map plate (700). The first map actuator (200a) may be configured to transmit rotational power to the first map plate (700a) to rotate the first map plate (700a), and the second map actuator (200b) may be configured to transmit rotational power to the second map plate (700b) to rotate the second map plate (700b).

[0150] As described above, the drive actuator (130) can be configured to transmit rotational power to the drive wheel (102) to rotate the drive wheel (102).

[0151] The suction port (104) may be provided in an open form at the bottom of the robot cleaner (1). By the operation of the fan motor (106), suction power is transmitted to the suction port (104), and accordingly, dust on the floor surface (B) is drawn into the robot cleaner (1) through the suction port (104) and moved to and stored in the dust bin (105) provided inside the robot cleaner (1).

[0152] The battery (107) of the robot cleaner (1) supplies power to each component of the robot cleaner (1), such as actuators (200a, 200b, 130), pump, fan motor (106), etc.

[0153] The control unit (101) is configured to control the operation of each component provided in the robot vacuum cleaner (1).

[0154] The control unit (101) controls the operation of each pump provided in the robot vacuum cleaner (1). The control unit (101) controls the operation of the first pump (161). The control unit (101) controls the operation of the heater (400).

[0155] The control unit (101) is composed of a PCB (Printed Circuit Board). The PCB of the control unit (101) may be equipped with components such as semiconductors, capacitors, and resistors.

[0156] The control unit (101) can be arranged in a stacked form with other components inside the main body (100). In Fig. 4, the control unit (101) has its outline indicated by a dotted line.

[0157] In a robot vacuum cleaner (1) according to an embodiment of the present invention, a control unit (101) is placed in a first area (S1) of a main body (100), and a heater (400) is placed in a second area (S2) of the main body (100).

[0158] The first region (S1) and the second region (S2) are regions that are distinct from each other in the main body (100) on a plan view. That is, the control unit (101) and the heater (400) are arranged so as not to overlap each other on a plan view. In one embodiment, the second region (S2) may be located behind the first region (S1).

[0159] When the heater (400) is in operation, the heat generated from the heater (400) can be transferred to the outside, and is particularly likely to be transferred in the upward direction.

[0160] Unlike the embodiment of the present invention, when the heater (400) and the control unit (101) overlap on a plan view, for example, when the control unit (101) is placed on the upper side of the heater (400), the heat of the heater (400) is transferred to the control unit (101), which may cause damage to the element mounted on the control unit (101).

[0161] In order to prevent such problems, the robot cleaner (1) according to the embodiment of the present invention is configured such that the control unit (101) is placed in a first area (S1) of the main body (100) and the heater (400) is placed in a second area (S2) of the main body (100), and damage to the control unit (101) by the heater (400) is prevented.

[0162] In a robot vacuum cleaner (1) according to one embodiment of the present invention, the first mop actuator (200a) and the second mop actuator (200b) can be placed in a third area (S3) that does not overlap with the first area (S1) and the second area (S2) on a plan view.

[0163] The third region (S3) is a region that is distinct from the first region (S1) and the second region (S2) in the main body (100) on a plan view. That is, the first map actuator (200a) and the second map actuator (200b) are arranged so as not to overlap with the control unit (101) and the heater (400) on a plan view. In one embodiment, the third region (S3) may be located behind the second region (S2).

[0164] Accordingly, it is possible to prevent or minimize the heat generated from the heater (400) from being transferred to the first mab actuator (200a) and / or the second mab actuator (200b), and to prevent malfunction and damage to the first mab actuator (200a) and the second mab actuator (200b). In addition, it is possible to prevent the first mab actuator (200a) and the second mab actuator (200b) and the heater (400) from being overlapped vertically, thereby increasing the vertical height of the robot cleaner (1), and to keep the center of gravity of the robot cleaner (1) low.

[0165] In a robot vacuum cleaner (1) according to one embodiment of the present invention, a dust bin (105) may be placed in a fourth area (S4) that does not overlap with the first area (S1), the second area (S2), and the third area (S3) on a plan view. Due to its characteristic of storing dust, the dust bin (105) is formed to have a relatively significant size (volume) in the robot vacuum cleaner (1).

[0166] The fourth region (S4) is a region that is distinct from the first region (S1), the second region (S2), and the third region (S3) in the main body (100) on a plan view. That is, the dustbin (105) is arranged so that the first mop actuator (200a), the second mop actuator (200b), the control unit (101), and the heater (400) do not overlap each other on a plan view. In one embodiment, the fourth region (S4) may be located between the first region (S1) and the third region (S3), and may be located on the left or right side of the second region (S2).

[0167] According to the embodiment of the present invention as described above, the components of the robot cleaner (1) can be prevented from overlapping vertically, thereby preventing the vertical height of the robot cleaner (1) from increasing, the center of gravity of the robot cleaner (1) can be kept low, and stable operation of the robot cleaner (1) can be achieved.

[0168] FIG. 6 is a drawing schematically showing some components of a robot vacuum cleaner (1) according to one embodiment of the present invention and the movement of water stored in a water tank (120).

[0169] A robot vacuum cleaner (1) according to an embodiment of the present invention may include a first flow path (151) and a second flow path (152).

[0170] A robot vacuum cleaner (1) according to an embodiment of the present invention may include a first euro pump (163) and a second euro pump (164).

[0171] A robot vacuum cleaner (1) according to an embodiment of the present invention may include a water treatment filter (300).

[0172] The water in the water tank (120) can be used for cleaning by being supplied to the outside of the robot cleaner (1) by a pump (161, 162, 163, 164) provided in the robot cleaner (1).

[0173] In an embodiment of the present invention, the water stored in the water tank (120) can be used as is (without filtering (water softening) and / or heating) while being discharged to the outside, and / or can be heated and used in the form of hot water or steam.

[0174] The first flow path (151) is connected to the water tank (120) and forms a path for water to flow. The first flow path (151) may be formed in various forms, such as a pipe, tube, or duct. A portion of the water tank (120) may form the first flow path (151).

[0175] The first flow path (151) may extend from the water tank (120) toward the mop (705, 705a, 705b). The end portion (the portion where water is sprayed) of the first flow path (151) may be formed to a point adjacent to the mop (705, 705a, 705b), or may be formed to a point where it touches the mop (705, 705a, 705b). The end portion of the first flow path (151) may be located above the mop (705, 705a, 705b), and at least a portion of the water sprayed from the end portion of the first flow path (151) may be absorbed by the mop (705, 705a, 705b).

[0176] The second flow path (152) is connected to the water tank (120) and forms a path for water to flow. The second flow path (152) may be formed in various forms, such as a pipe, tube, or duct. A portion of the water tank (120) may form the second flow path (152).

[0177] The second flow path (152) may extend from the water tank (120) toward the mop (705, 705a, 705b). The end portion (the portion where water is sprayed) of the second flow path (152) may be formed to a point adjacent to the mop (705, 705a, 705b), or may be formed to a point where it touches the mop (705, 705a, 705b). The end portion of the second flow path (152) may be located above the mop (705, 705a, 705b), and at least a portion of the hot water or steam sprayed from the end portion of the second flow path (152) may be absorbed by the mop (705, 705a, 705b).

[0178] The water stored in the water tank (120) moves along the first flow path (151) and is discharged outside the water tank (120), and at this time, the water is used as is (without filtering or heating).

[0179] The water stored in the water tank (120) is discharged outside the water tank (120) while moving along the second flow path (152). At this time, the water is softened while passing through the water treatment filter (300), and can also be transformed into hot water or steam while passing through the heater (400).

[0180] FIG. 7 is a drawing showing a configuration of a robot vacuum cleaner (1) according to one embodiment of the present invention, including a first flow path (151), a second flow path (152), and a connection between the first flow path (151) and the second flow path (152).

[0181] According to an embodiment of the present invention, the water tank (120) may be configured so that the interior is partitioned and the path of water moving inside the water tank (120) is divided accordingly (see FIG. 6). In an embodiment of the present invention, when water stored inside the water tank (120) is discharged to the outside, the water treatment filter (300) may be bypassed or may pass through the water treatment filter (300).

[0182] The meaning of "bypass" described in the present invention can be understood as moving along a path (path) B that does not pass through a specific object, rather than moving along a path (path) A that passes through a specific object. For example, "water bypasses the water treatment filter (300)" can be understood to mean that water moves along a path other than the path that passes through the water treatment filter (300).

[0183] The water tank (120) may include a first chamber (121) and a second chamber (122) that are distinct from each other. The first chamber (121) and the second chamber (122) each form a space inside the water tank (120).

[0184] In an embodiment of the present invention, at least a portion of the water in the first chamber (121) bypasses the heater (400), and at least a portion of the water in the second chamber (122) passes through the heater (400).

[0185] In an embodiment of the present invention, at least a portion of the water in the first chamber (121) bypasses the water treatment filter (300) and the heater (400), and at least a portion of the water in the second chamber (122) passes through the water treatment filter (300) and the heater (400).

[0186] The first euro (151) is connected to the water tank (120) and forms a path through which water bypasses the water treatment filter (300) and heater (400).

[0187] The first euro (151) can be connected to the first chamber (121).

[0188] The second euro (152) is connected to the water tank (120) and forms a path through which water passes through the water treatment filter (300) and heater (400).

[0189] The second euro (152) can be connected to the second chamber (122), the water treatment filter (300), and the heater (400).

[0190] The water tank (120) may include a first pipe (123) and a second pipe (124). The first pipe (123) is connected to the first chamber (121), and the second pipe (124) is connected to the second chamber (122).

[0191] The first flow path (151) is connected to the first pipe (123), and water inside the first chamber (121) can move through the first flow path (151).

[0192] The second flow path (152) is connected to the second pipe (124), and water inside the second chamber (122) can move through the second flow path (152).

[0193] The first euro pump (163) is provided in the first euro (151). The first euro pump (163) is configured as a water pump and receives power from a battery (107) to move water or fluid along the first euro (151).

[0194] The second euro pump (164) is provided in the second euro (152). The second euro pump (164) is composed of a water pump and receives power from a battery (107) to move water or fluid along the second euro (152).

[0195] When the first euro pump (163) is operated by the control unit (101), the water inside the water tank (120) moves along the first euro (151) and can also be sprayed onto the mop (705, 705a, 705b).

[0196] When the second euro pump (164) is operated by the control unit (101), the water inside the water tank (120) moves along the second euro (152), and is also heated by the heater (400) operated by the control unit (101), and the heated water can be sprayed to the mop (705, 705a, 705b).

[0197] In an embodiment of the present invention, the heater (400) may include a heater casing (410), a heat source (415), a heater inlet (420), and a heater outlet (430).

[0198] The heater casing (410) is formed to form a predetermined internal space and forms a part of the second passage (152). A heat source (415) for heating water is provided inside the heater casing (410). In the embodiment of the present invention, the heat source (415) of the heater (400) may be formed as a film heater. The heater inlet (420) forms the entrance of the heater casing (410), and the heater inlet (420) forms the exit of the heater casing (410).

[0199] Water heated by the heater (400) can be transformed into a steam state. At this time, the heater (400) can function as a steam generator.

[0200] In an embodiment of the present invention, the heater outlet (430) may be provided further from the control unit (101) than the heater inlet (420).

[0201] Since the water heated in the heater (400) is discharged through the heater outlet (430), the area around the heater outlet (430) can be relatively high temperature. In the embodiment of the present invention, the heater outlet (430) is provided further from the control unit (101) than the heater inlet (420), thereby preventing the heat of the hot water (or steam) heated inside the heater (400) from being transferred to the control unit (101), thereby preventing the control unit (101) from being damaged.

[0202] In a robot cleaner (1) according to an embodiment of the present invention, a water treatment filter (300) is placed upstream of a heater (400). Accordingly, as described below, scale can be effectively prevented from forming in the second flow path (152) and the heater (400).

[0203] In an embodiment of the present invention, the water treatment filter (300) may be provided inside the main body (100). In an embodiment of the present invention, the water treatment filter (300) may be provided inside the water tank (120).

[0204] A water treatment filter (300) according to an embodiment of the present invention is configured to reduce mineral components in water. The water treatment filter (300) is configured to filter hardness substances (such as calcium or magnesium components) from raw water. The water treatment filter (300) according to an embodiment of the present invention may be referred to as a water softener or a water purifier. The water treatment filter (300) can remove calcium or magnesium components from water stored inside a water tank.

[0205] The water treatment filter (300) may be formed of various materials and structures within a range capable of reducing mineral components in water. The water treatment filter (300) may be formed of various materials and structures within a range capable of removing hardness substances or scale-causing substances contained in raw water.

[0206] Hard substances can react at temperatures above or below room temperature to form scale. Scale, such as calcium carbonate (CaCO3), is a substance formed when minerals remaining in water clump together after the water evaporates.

[0207] It is necessary to prevent the formation of scale, as scale generated on the path through which water moves may cause a malfunction or deterioration in the performance of the robot cleaner (1).

[0208] If raw water from which hardness substances have not been removed is heated, the occurrence of scale increases further, so prevention of this is necessary.

[0209] To prevent such problems, a robot vacuum cleaner (1) according to an embodiment of the present invention includes a water treatment filter (300). The water treatment filter (300) may be configured in various ways to prevent scale formation.

[0210] A water treatment filter (300) according to the present invention may comprise one or more of an ion exchange resin, a polyphosphate, and a hardness reduction catalyst. In addition, the water treatment filter (300) may be formed in various ways to prevent scale formation.

[0211] The water treatment filter (300) may include a carbon filter.

[0212] Ion exchange resins can remove limescale, magnesium, iron, and heavy metals from water. Ion exchange resins reduce or suppress hardness components (such as calcium and magnesium) in water, preventing scale formation.

[0213] Polyphosphates release polyphosphoric acid into water, which can bind with calcium and magnesium ions in the water and prevent scale formation.

[0214] The hardness reduction catalyst may include calcium carbonate (CaCO3) or magnesium carbonate (MgCO3). The hardness reduction catalyst includes a silicate-based support, and calcium carbonate (CaCO3) or magnesium carbonate (MgCO3) may be formed on the surface of the support.

[0215] Carbon filters can remove impurities in water by utilizing the adsorption power of activated carbon.

[0216] In an embodiment of the present invention, the second flow pump (164) may be positioned downstream of the water treatment filter (300). Accordingly, water present in the second flow path (152) may be softened by the water treatment filter (300) even before the operation of the second flow pump (164), and may be heated by being supplied to the heater (400) immediately after the operation of the second flow pump (164).

[0217] In an embodiment of the present invention, the second euro pump (164) may be arranged upstream of the heater (400). Accordingly, water existing in the second euro pump (152) before the operation of the second euro pump (164) does not pass through the heater (400), but may be heated while passing through the heater (400) after the operation of the second euro pump (164). Unlike the embodiment of the present invention, when the second euro pump (164) is arranged downstream of the heater (400), water that has already passed the heater (400) when the second euro pump (164) is operated and has not been heated by the heater (400) may be discharged toward the mops (705, 705a, 705b).

[0218] When a robot vacuum cleaner (1) is equipped with a first mop (705a) and a second mop (705b), the first flow path (151) may be configured to branch toward the first mop (705a) and the second mop (705b). In addition, the second flow path (152) may be configured to branch toward the first mop (705a) and the second mop (705b).

[0219] As described above, the robot cleaner (1) according to the embodiment of the present invention comprises a water tank (120), a water treatment filter (300), and a heater (400), and when cleaning with hot water or steam, the hardness of water can be lowered and scale formation can be suppressed by the water treatment filter (300), and the lifespan of the heater (400) and the second flow path (152) connected thereto can be extended and cleaning performance can be maintained.

[0220] In addition, by allowing water (raw water) to optionally pass through the water treatment filter (300) and heater (400), the raw water can be used as is or by generating hot water or steam and using it, as needed. That is, when the use of raw water is appropriate, the raw water can be discharged through the first flow path (151) and used, and when the use of hot water or steam is necessary, the raw water can be discharged through the second flow path (152). Accordingly, the cleaning performance of the robot cleaner (1) is improved, unnecessary use of the water treatment filter (300) and heater (400) can be prevented, and the service life of the water treatment filter (300) and heater (400) can be maximized.

[0221] FIG. 8 is a drawing showing a first flow path (151) and a second flow path (152) connected to a valve (600) in a robot vacuum cleaner (1) according to one embodiment of the present invention.

[0222] A robot vacuum cleaner (1) according to an embodiment of the present invention comprises a second pump (162) and a valve (600). The operation of the second pump (162) and the valve (600) is controlled by a control unit (101).

[0223] The second pump (162) is provided in the main body (100) and is configured to move water from the water tank (120).

[0224] A water tank (120) according to one embodiment may include a water tank inlet (125), a water tank outlet (126), and a water tank return port (127). The water tank inlet (125) is an inlet of the water tank (120), through which external water flows into the water tank (120) through the water tank inlet (125). The water tank outlet (126) is an outlet through which water is discharged from the water tank (120). The water tank return port (127) is an outlet through which water stored in the water tank (120) is discharged from the water tank (120) when it exceeds a predetermined capacity.

[0225] In the robot vacuum cleaner (1) according to an embodiment of the present invention, the water tank outlet (126) of the water tank (120) can be connected to a second pump (162).

[0226] The valve (600) is connected to the second pump (162), and water discharged from the water tank (120) by the operation of the second pump (162) and passing through the second pump (162) moves to the valve (600).

[0227] The valve (600) may be formed in the form of an electronic valve. The valve (600) may be formed as a 3-way solenoid valve.

[0228] The valve (600) may include a valve inlet (610), a first valve outlet (620), and a second valve outlet (630).

[0229] The valve inlet (610) is connected to the second pump (162), and water flowing in through the valve inlet (610) enters the inside of the valve (600).

[0230] The first valve outlet (620) is configured to be connected to or blocked from the valve inlet (610).

[0231] The second valve outlet (630) is configured to be connected to or blocked from the valve inlet (610).

[0232] Water that flows into the valve inlet (610) by the operation of the valve (600) can be discharged through the first valve outlet (620) or through the second valve outlet (630).

[0233] In the robot cleaner (1) according to an embodiment of the present invention, the first flow path (151) can be connected to the first valve outlet (620). The first flow path (151) forms a flow path through which water moves and is sprayed toward the mop (705). Accordingly, water discharged through the first valve outlet (620) can move through the first flow path (151) and then be sprayed toward the mop (705).

[0234] In the robot cleaner (1) according to an embodiment of the present invention, the second flow path (152) can be connected to the second valve outlet (630). The second flow path (152) forms a flow path through which water moves and is sprayed toward the mop (705). Accordingly, water discharged through the second valve outlet (630) can move through the second flow path (152) and then be sprayed toward the mop (705).

[0235] At this time, the second euro (152) may be equipped with a water treatment filter (300) and a heater (400), and the water treatment filter (300) and the heater (400) may be configured as described above.

[0236] As described above, in the robot cleaner (1) according to one embodiment of the present invention, the first flow path (151) is a flow path through which water bypassing the heater (400) moves and is sprayed toward the mop (705), and the second flow path (152) is a flow path through which water passing through the heater (400) moves and is sprayed toward the mop (705).

[0237] Accordingly, unheated water (raw water) is moved through the first flow path (151) and then used, and heated water (hot water or steam) is moved through the second flow path (152) and then used, thereby preventing unnecessary use of the heater (400).

[0238] FIG. 9 is a drawing showing a part of a configuration of a robot vacuum cleaner (1) according to one embodiment of the present invention, and is a perspective view showing a cross-sectional view of a joint portion of a mop plate (700) and a mop actuator (200).

[0239] A map plate (700) according to an embodiment of the present invention comprises a plate inlet (710), a plate path (720), and a plate outlet (730).

[0240] The plate inlet (710) is connected to the first euro (151) and the second euro (152).

[0241] After the end of the first euro (151) and the end of the second euro (152) are connected to one tube, this tube can be connected to the euro inlet (510), and thus the first euro (151) and the second euro (152) can be connected to the plate inlet (710).

[0242] The plate inlet (710) can be formed in the vertical direction from the center of the map plate (700).

[0243] The plate channel (720) is connected between the plate inlet (710) and the plate outlet (730) and forms a path for water to flow. The plate channel (720) may be formed in a form that extends radially from the center of the map plate (700). The plate channel (720) may be formed repeatedly along the circumference of the map plate (700).

[0244] The plate outlet (730) is connected to the plate inlet (710) through the plate channel (720) and is configured to discharge water. The plate outlet (730) is formed at a point radially spaced from the center of the mop plate (700). When a plurality of plate channels (720) are provided, a plurality of plate outlets (730) are also provided. The plate outlet (730) may be opened toward the bottom. The plate outlet (730) may be opened toward the mop (705).

[0245] A robot cleaner (1) according to an embodiment of the present invention may include a euro inlet (510), a driver (520), and a rotational resistance body (530).

[0246] The mob actuator (200) may include a mob shaft (210) and an inner housing (220).

[0247] The inner housing (220) may be located at the center of the actuator (200) and may be formed in the form of a tube with a center that extends vertically.

[0248] The euro inlet (510) is coupled to the inner surface of the inner housing (220) and is configured to slide up and down relative to the inner housing (220). Here, the euro inlet (510) is provided with a flow path that penetrates the interior thereof up and down, a first flow path (151) and a second flow path (152) are connected to the upper end of the euro inlet (510), and the lower end of the euro inlet (510) is connected to the plate inlet (710).

[0249] The mob shaft (210) rotates around the rotation axis (RA).

[0250] The mab shaft (210) may rotate in conjunction with the gear of the mab actuator (200) or may be formed integrally with the gear, and rotates clockwise or counterclockwise when the mab actuator (200) operates.

[0251] The mop shaft (210) is formed in the shape of a vertical tube and is provided to surround the inner housing (220).

[0252] A first catch (211) is formed protrudingly on the outer surface of the mab shaft (210).

[0253] The driver (520) includes an inner part (521) and an outer part (522). The inner part (521) and the outer part (522) of the driver (520) are connected to each other at the lower ends.

[0254] The outer part (522) is formed in the shape of a tube in the vertical direction, and screw threads are formed along the vertical direction on the inner surface of the outer part (522), and the first catch (211) of the map shaft (210) is screw-connected to these screw threads.

[0255] A passage extending vertically is formed in the center of the inner part (521) of the driver (520).

[0256] The upper part of the inner part (521) of the driver (520) is connected to the euro inlet (510), and the lower part of the inner part (521) of the driver (520) is connected to the plate inlet (710) of the map plate (700). That is, the euro inlet (510) and the plate inlet (710) are connected to each other through the inner part (521) of the driver (520).

[0257] A bearing may be provided between the upper part of the inner part (521) and the euro inlet (510), thereby enabling smooth rotation of the driver (520) relative to the euro inlet (510).

[0258] The rotational resistance body (530) may be coupled to the main body (100) or to the actuator (200). The rotational resistance body (530) is configured to have frictional contact with the outer surface of the driver (520). That is, the rotational resistance body (530) may be configured to contact the outer portion (522) of the driver (520) and generate a predetermined resistance to the rotation of the outer portion (522).

[0259] In one embodiment, when the mop shaft (210) rotates in a first rotational direction (e.g., counterclockwise) about the rotational axis (RA), the first catch (211) moves relative to the upper end of the screw thread of the outer portion (522) of the driver (520), and the first catch (211) is caught on the upper end of the screw thread, so that the mop shaft (210) and the driver (520) do not rotate relative to each other, and the mop shaft (210) and the driver (520) can rotate together in the first rotational direction. At this time, the driver (520), the mop (705), and the mop plate (700) can move downwards with respect to the mop actuator (200).

[0260] And, when the mop shaft (210) rotates in a second rotational direction (e.g., clockwise) opposite to the first rotational direction around the rotational axis (RA), the rotation of the driver (520) is prevented by the rotational resistance body (530), and the first catch (211) moves downward relative to the screw thread of the outer part (522) of the driver (520), and accordingly, the driver (520), the mop (705), and the mop plate (700) can move upward relative to the mop actuator (200).

[0261] When the driver (520), mop (705) and mop plate (700) are raised and lowered, the euro inlet (510) is raised and lowered together on the rotation axis (RA) and is stably maintained in a state of being connected to the first euro (151) and the second euro (152).

[0262] As described above, in the robot cleaner (1) according to the embodiment of the present invention, when the use of raw water is required, the raw water can be supplied to the mop (705) through the first flow path (151), the plate inlet (710), and the plate outlet (730), and when the use of hot water (or steam) is required, the hot water (or steam) can be supplied to the mop (705) through the second flow path (152), the plate inlet (710), and the plate outlet (730), and the use of the raw water and the hot water (or steam) can be performed quickly, respectively.

[0263] In addition, as described above, since the water treatment filter (300) is provided in the second flow path (152), even when raw water and hot water (or steam) move through the same flow path (plate inlet (710), plate flow path (720), and plate outlet (730)) in the map plate (700), the occurrence of scale in the flow path (plate inlet (710), plate flow path (720), and plate outlet (730)) can be prevented.

[0264] While specific embodiments of the present invention have been described and illustrated above, it will be understood that the present invention is not limited to the described embodiments, and that those skilled in the art will readily appreciate that various modifications and variations may be made to other specific embodiments without departing from the spirit and scope of the present invention. Accordingly, the scope of the present invention should not be defined by the described embodiments, but rather by the technical concepts set forth in the claims.

[0265] The robot cleaner according to an embodiment of the present invention has remarkable industrial applicability in that stable support is provided by the driving wheel and the robot cleaner can run stably regardless of whether a heater is used.

Claims

1. Main body; A first driving wheel provided on the main body on the outer side of a first line parallel to a center line that crosses the center of the main body back and forth; A second driving wheel positioned on the opposite side of the first driving wheel based on the center line and provided on the main body on the outer side of a second line parallel to the center line; A water tank provided in the above body and configured to store water; and A heater is provided in the main body and is separated from the water tank, and is configured to heat water supplied from the water tank; The heater is placed between the first line and the second line, Robot vacuum cleaner.

2. In paragraph 1, The above heater, A heater casing having a space inside to accommodate water; A heat source provided inside the above heater casing; A heater inlet forming the entrance of the above heater casing; and including a heater outlet forming the outlet of the above heater casing; Robot vacuum cleaner.

3. In paragraph 1, The above robot vacuum cleaner, A control unit is disposed in the first region of the above body and includes a PCB, The above heater is placed in a second area that does not overlap with the first area on the plan view. Robot vacuum cleaner.

4. In paragraph 1, The above robot vacuum cleaner, A control unit is disposed on the above body and includes a PCB, The above heater, A heater casing having a space inside to accommodate water; A heat source provided inside the above heater casing; A heater inlet forming the entrance of the above heater casing; and A heater outlet forming an outlet of the heater casing and provided further from the control unit than the heater inlet; Robot vacuum cleaner.

5. In paragraph 1, The above robot vacuum cleaner, A first pump provided in the main body and moving water from the water tank to the heater; and A control unit that controls the operation of the heater and the first pump; Robot vacuum cleaner.

6. In paragraph 1, The above robot vacuum cleaner, Including a mop provided on the lower side of the above body, The water stored in the water tank is supplied toward the mop after selectively passing through the heater. Robot vacuum cleaner.

7. In paragraph 6, The above robot vacuum cleaner, A map plate rotatably connected to the lower side of the main body; and A map actuator provided in the above body and configured to rotate the map plate; The above mop is attached to the lower side of the above mop plate, Robot vacuum cleaner.

8. In paragraph 6, The above robot vacuum cleaner, A first flow path forming a flow path through which water bypassing the heater moves and is sprayed toward the mop; and A second path is formed to form a path so that water passing through the heater moves and is sprayed toward the mop; Robot vacuum cleaner.

9. In paragraph 6, The above mop is divided into a first mop and a second mop, The above robot vacuum cleaner, A first flow path connected to the water tank and configured to allow water to bypass the heater to move, the first flow path branching toward the first mop and the second mop; and A second flow path connected to the water tank and configured to allow water passing through the heater to move, the second flow path branching toward the first mop and the second mop; Robot vacuum cleaner.

10. In paragraph 6, The above robot vacuum cleaner, A second pump provided in the above body and moving water from the water tank; A valve including a valve inlet connected to the second pump, a first valve outlet communicating with or blocked from the valve inlet, and a second valve outlet communicating with or blocked from the valve inlet; A first flow path connected to the first valve outlet and forming a flow path through which water moves and is sprayed toward the mop; and A second flow path connected to the second valve outlet and the heater and forming a flow path through which water moves and is sprayed toward the mop; Robot vacuum cleaner.

11. In any one of paragraphs 8 to 10, The above robot vacuum cleaner, A water treatment filter provided in the second euro above, but provided upstream of the heater; Robot vacuum cleaner.

12. In paragraph 11, The above water treatment filter, It is made to filter calcium or magnesium components from raw water, or is made to include at least one of ion exchange resin, polyphosphate, and hardness reduction catalyst. Robot vacuum cleaner.

13. In paragraph 11, The above robot vacuum cleaner, It includes a mop plate that is rotatably connected to the lower side of the main body and to which the mop is connected; The above map plate is, a plate inlet connected to the first euro and the second euro; and A plate outlet communicating with the plate inlet and configured to discharge water; Robot vacuum cleaner.

14. Body; A first driving wheel provided on the main body on the outer side of a first line parallel to a center line that crosses the center of the main body back and forth; A second driving wheel positioned on the opposite side of the first driving wheel based on the center line and provided on the main body on the outer side of a second line parallel to the center line; A first map plate rotatably coupled to the lower side of the main body so as to overlap with the first line; A second map plate rotatably coupled to the lower side of the main body so as to overlap with the second line; A first map actuator provided in the above body and rotating the first map plate; A second map actuator provided in the above body and rotating the second map plate; A water tank provided in the above body and configured to store water; and A heater is provided in the main body and is separated from the water tank, and is configured to heat water supplied from the water tank; The heater is placed between the first line and the second line, Robot vacuum cleaner.

15. In paragraph 14, The above robot vacuum cleaner, A control unit is disposed in the first region of the above body and includes a PCB, The above heater is placed in a second area that does not overlap with the first area on the plan view, The first map actuator and the second map actuator are arranged in a third region that does not overlap with the first region and the second region on a plan view. Robot vacuum cleaner.

16. In paragraph 15, The above robot vacuum cleaner, Includes a dust bin into which dust is drawn and stored, The above dustbin is placed in a fourth area that does not overlap with the first area, the second area, and the third area on the plan view. Robot vacuum cleaner.

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