Window cleaning device

Abstract

The present disclosure relates to a window cleaning device. The window cleaning device of the present disclosure includes a housing forming an outer shape including a first surface facing a window, a mover moving the housing, and a cleaning module configured to the first surface for removing foreign substances from the window. The cleaning module includes a cleaning body, a squeegee protruding from the cleaning body toward the window, and a spray nozzle configured below the squeegee for spraying a cleaning liquid toward the window. An exhaust port for spraying air toward the window is formed in a side surface of the cleaning body.

Description

Technical Field

[0001] This disclosure relates to a window cleaning device, and more specifically, to a window cleaning device for cleaning the exterior surfaces of windows. Background Technology

[0002] Under normal circumstances, it is difficult to clean the exterior surfaces of windows installed on the walls of buildings. Therefore, if left unattended for a long time, they are easily contaminated by external dust and environmental pollution, which can lead to a decrease in the lighting performance of the windows.

[0003] You can hire other professional companies to clean the exterior surfaces of your windows, but this involves paying regular fees.

[0004] A tool for cleaning windows is disclosed in existing Korean patent KR10-1654876B1. However, this tool requires a person to manually clean the windows from inside the room, which is very cumbersome. Furthermore, when actually using this tool indoors, it is difficult to clean the entire outer surface of the window.

[0005] Furthermore, an existing Korean patent, KR10-1920917B1, discloses a device for cleaning windows while moving outside the window.

[0006] However, the published documents only disclose a structure that moves while wiping the outer surface of the window, which may result in the window not being cleaned properly. Summary of the Invention

[0007] The problem that the invention aims to solve

[0008] The purpose of this disclosure is to address the aforementioned problems, as well as other issues.

[0009] Another objective is to provide a window cleaning device for cleaning foreign objects attached to the outer surface of a window.

[0010] Another objective is to provide a window cleaning device that can clean multiple windows with a single movement.

[0011] Another objective is to provide a window cleaning device that collects the sprayed cleaning fluid.

[0012] Another objective is to provide a window cleaning device with an optimized structure that utilizes the functions of the scraper, the spraying of cleaning fluid, and the suction function.

[0013] Another objective is to provide a window cleaning device that extends the spray range of the cleaning fluid.

[0014] Another objective is to provide a window cleaning device that blows away and wipes away foreign objects from a window. A window cleaning device is provided that blows away foreign objects from a window before wiping it.

[0015] Another objective is to provide a window cleaning device that blows away foreign objects from the window and sucks them in.

[0016] Another objective is to provide a window cleaning device capable of spraying cleaning fluid toward the window and wiping it away.

[0017] Another objective is to provide a window cleaning device that prevents cleaning fluid sprayed towards the window from spreading to areas outside the cleaning area.

[0018] Another objective is to provide a window cleaning device that sprays cleaning fluid toward and draws it in. Furthermore, a window cleaning device is provided that separately collects the drawn-in cleaning fluid. A window cleaning device is also provided that, in this process, draws in air to allow the cleaning fluid to flow in and then re-exports the air to an outlet.

[0019] Methods for solving problems

[0020] To achieve the aforementioned objective, embodiments of this disclosure provide a window cleaning device comprising: a housing having a shape including a first surface facing the window; a mover for moving the housing; and a cleaning module disposed on the first surface for removing foreign objects from the window.

[0021] The cleaning module includes: a cleaning body; a scraper protruding from the cleaning body toward a window; and a spray nozzle disposed below the scraper for spraying cleaning fluid toward the window. An exhaust port for spraying air toward the window is formed on one side surface of the cleaning body.

[0022] The discharge port is located below the scraper.

[0023] The outlet is positioned above the spray nozzle.

[0024] An intake port is formed on one side surface of the cleaning body, the intake port being used to draw in cleaning liquid discharged from the spray nozzle.

[0025] The inlet is located below the spray nozzle.

[0026] The spray nozzle is disposed between the outlet and the inlet.

[0027] When the scraper is pressed against the window, the housing moves downward.

[0028] The cleaning body includes a front surface on which the scraper is disposed.

[0029] The front surface includes: a first front surface; and a second front surface disposed below the first front surface. The second front surface is configured to be spaced rearward from the first front surface. The scraper is disposed on the first front surface.

[0030] The outlet is formed on the second front surface.

[0031] The spray nozzle protrudes forward on the second front surface. The front end of the spray nozzle is located further rearward than the first front surface.

[0032] An intake port is formed on the second front surface for drawing in cleaning fluid discharged from the spray nozzle. The intake port is positioned below the spray nozzle.

[0033] An end flange protruding forward is disposed below the second front surface.

[0034] The spray nozzle has a spray hole for spraying cleaning fluid. The spray nozzle includes: an upper protrusion disposed above the spray hole and projecting forward; and a lower protrusion disposed below the spray hole and projecting forward.

[0035] The spray nozzle includes a central surface, which forms a flat surface in the left-right direction between the upper protrusion and the lower protrusion. The spray hole is formed on the central surface.

[0036] The scraper protrudes forward from the spray nozzle.

[0037] The window cleaning device disclosed herein includes: a housing having a shape including a first surface facing the window; a mover that moves the housing; and a cleaning module disposed on the first surface for removing foreign objects from the window.

[0038] The cleaning module includes: a cleaning body; a scraper protruding from the cleaning body toward the window; and a spray nozzle disposed below the scraper for spraying cleaning fluid toward the window.

[0039] An intake port is formed on one side surface of the cleaning body, which is used to draw in cleaning fluid sprayed toward the window.

[0040] The cleaning module includes a fan disposed inside the cleaning body for allowing air or cleaning fluid to flow into the cleaning body through the suction port.

[0041] An intake flow path is formed inside the cleaning body, through which air or cleaning fluid flows in via the intake port. The cleaning module includes a collection section located behind and below the intake flow path, which collects the cleaning fluid flowing through the intake flow path.

[0042] The lower surface of the suction flow path forms an inclined surface that slopes downwards towards the rear.

[0043] An end flange protruding forward is provided at the lower end of the front surface.

[0044] The window cleaning device disclosed herein includes: a housing having a shape including a first surface facing the window; a mover that moves the housing; and a cleaning module configured to partially expose the first surface for removing foreign objects from the window.

[0045] The cleaning module includes: a cleaning body; a scraper protruding from the cleaning body toward the window; and a spray nozzle disposed below the scraper for spraying cleaning fluid toward the window.

[0046] The front surface is formed with: an outlet for spraying air toward the window; and an inlet for drawing in cleaning fluid sprayed toward the window. The spray nozzle is disposed between the inlet and the outlet.

[0047] To achieve the aforementioned objective, embodiments of this disclosure provide a window cleaning device comprising: a housing having a shape including a first surface facing the window; a mover for moving the housing; and a cleaning module disposed on the first surface for removing foreign objects from the window.

[0048] The cleaning module includes: a cleaning body having an internal intake flow path and an exhaust flow path, and an intake port and an exhaust port on its front surface; a fan disposed in the cleaning body for creating airflow toward the intake flow path and the exhaust flow path; and a scraper protruding from the first surface for contacting the window.

[0049] The inlet and outlet are located below the scraper.

[0050] The outlet is positioned above the inlet and sprays air downwards.

[0051] The inlet is located below the outlet and opens upwards.

[0052] The upper surface of the outlet has a shape that slopes downwards towards the front. The upper surface of the inlet has a shape that slopes upwards towards the front.

[0053] The angle of inclination formed by the upper surface of the outlet and the front surface is smaller than the angle of inclination formed by the upper surface of the inlet and the front surface.

[0054] It is provided with an end flange, which is disposed below the inlet and protrudes forward beyond the front surface where the inlet is located.

[0055] A spray nozzle is disposed on the front surface, and the spray nozzle sprays cleaning liquid forward between the upper and lower disposed inlet and outlet.

[0056] The cleaning body has the following internally formed: an intake flow path for air to flow into the intake port; and an exhaust flow path for air to flow out to the exhaust port.

[0057] The discharge flow path includes a front discharge flow path, which is positioned above the suction flow path, and the vertical length of the flow path extends forward.

[0058] The outlet is formed at the lower part of the front discharge flow path.

[0059] The upper surface of the outlet has a shape that slopes downwards towards the front.

[0060] The front surface has: a plurality of spaced-apart outlets; and a plurality of intake ports located below each of the plurality of intake ports.

[0061] A plurality of spray nozzles spaced apart from each other are disposed on the front surface.

[0062] The number of the plurality of spray nozzles is set to be less than the number of the plurality of inlet ports or the plurality of outlet ports.

[0063] The plurality of spray nozzles are respectively located between the plurality of intake ports arranged in the vertical direction and the plurality of exhaust ports. The plurality of spray nozzles spray cleaning fluid in the horizontal direction.

[0064] The plurality of spray nozzles each include: a central surface having a spray hole for spraying cleaning fluid; an upper protrusion disposed above the central surface and protruding forward; and a lower protrusion disposed below the central surface and protruding forward.

[0065] The upper surface of the inlet slopes upwards and forwards.

[0066] The plurality of suction ports include end suction ports, which are configured adjacent to the left and right ends of the front surface of the cleaning body.

[0067] The plurality of outlets includes end outlets, which are configured adjacent to the left and right ends of the front surface of the cleaning body.

[0068] The end inlet and the end outlet are configured to be closer to the left or right end of the front surface than the spray nozzle.

[0069] The window cleaning device disclosed herein includes: a housing having a shape including a first surface facing the window; a mover that moves the housing; and a cleaning module disposed on the first surface for removing foreign objects from the window.

[0070] The cleaning module includes: a cleaning body having an internal intake flow path and an exhaust flow path; a fan disposed in the cleaning body for creating airflow toward the intake flow path and the exhaust flow path; and a scraper protruding from the front surface of the cleaning body for contacting a window.

[0071] The front surface has: a plurality of spaced-apart outlets; and a plurality of spaced-apart inlets located below each of the plurality of outlets. A plurality of spaced-apart spray nozzles are disposed on the front surface.

[0072] To achieve the aforementioned objective, embodiments of this disclosure provide a window cleaning device comprising: a housing having a shape including a first surface facing the window; a mover for moving the housing; and a cleaning module disposed on the first surface for removing foreign objects from the window.

[0073] The cleaning module includes: a cleaning body having an internal space for airflow and a plurality of spaced-apart intake ports and a plurality of exhaust ports on its front surface; and a scraper protruding from the front surface to contact the window and positioned above the intake ports.

[0074] The cleaning module includes a fan that exhausts air to the outlet and allows air to flow into the cleaning body through the inlet.

[0075] The cleaning body contains: an intake flow path for air to flow into the plurality of intake ports; and an exhaust flow path disposed above the intake flow path for exhausting air into the plurality of exhaust ports.

[0076] The more the suction flow path moves from the suction port toward the rear, the narrower its width becomes in the left-right direction.

[0077] The further forward the discharge path extends, the wider its width expands in the left and right directions.

[0078] The discharge flow path includes a pair of discharge flow paths spaced apart from each other.

[0079] The fan includes a pair of fans disposed in the pair of exhaust flow paths. The fans supply air below the exhaust flow paths to the exhaust flow paths.

[0080] The fan is positioned behind the discharge path.

[0081] A connecting flow path is formed inside the cleaning body, and the connecting flow path is disposed behind the suction flow path, connecting the suction flow path and the discharge flow path.

[0082] The connecting flow path is positioned below the discharge flow path. The fan supplies air from the connecting flow path to the discharge flow path.

[0083] The cleaning body includes a partition wall that divides the area where the suction flow path and the discharge flow path are configured vertically. A first guide wall is provided in the cleaning body, which separates the suction flow path and the connecting flow path below the partition wall.

[0084] The first guide wall includes: a partition wall spaced rearward from the front surface of the cleaning module; and an inclined wall extending rearward from the partition wall. The inclined wall is configured such that the lateral width of the suction flow path decreases towards the rear.

[0085] A gap space is formed between the pair of discharge flow paths, the gap space being a space independent of the discharge flow paths. A second guide wall is disposed on the cleaning body, the second guide wall separating the pair of discharge flow paths and the gap space above the partition wall.

[0086] The discharge path includes a front discharge path that extends downward from the front portion. The discharge port is formed at the lower part of the front discharge path.

[0087] The upper surface of each of the plurality of outlets slopes downwards towards the front.

[0088] The front surface of the cleaning unit includes a spray nozzle for spraying cleaning fluid toward the window. The spray nozzle is positioned between the intake port and the exhaust port, which are arranged in a vertical direction.

[0089] A collection section for collecting cleaning fluid is provided behind the suction flow path.

[0090] The lower surface of the suction flow path forms an inclined surface towards the rear and downward.

[0091] An upper connecting portion is disposed above the collection section. A connecting flow path is formed inside the cleaning body, extending from the upper connecting portion and connecting to the discharge flow path.

[0092] A communication hole communicating with the collection part is formed on the lower surface of the upper connecting part, and a filter for removing foreign objects from the air is disposed below the communication hole.

[0093] The window cleaning device disclosed herein includes: a housing having a shape including a first surface facing the window; a mover that moves the housing; and a cleaning module disposed on the first surface for removing foreign objects from the window.

[0094] The cleaning module includes: a cleaning body having an internal space for airflow and a plurality of spaced-apart inlets and outlets on its front surface; a scraper protruding from the front surface to contact a window and positioned above the inlets; and a pair of fans that exhaust air to the outlets and allow air to flow into the cleaning body through the inlets.

[0095] The cleaning body contains: an intake flow path for air to flow into the plurality of intake ports; a pair of exhaust flow paths disposed above the intake flow path for exhausting air to the plurality of exhaust ports; and a pair of connecting flow paths disposed behind the intake flow path for connecting the intake flow path to each of the pair of exhaust flow paths.

[0096] The details of other embodiments are contained in the detailed description and accompanying drawings.

[0097] Invention Effects

[0098] The window cleaning device according to this disclosure has one or more of the following effects.

[0099] First, the window cleaning device disclosed herein can automatically clean the outer surface of a window. It has the advantage of keeping the outer surface of the window clean.

[0100] Secondly, when the window cleaning device moves, it can blow away foreign objects from the window through the exhaust port and wipe the window clean using the spray nozzles and scraper. That is, it also has the advantage of cleaning the window with just one movement.

[0101] Third, the fan allows air and cleaning fluid to flow into the cleaning module through the intake. This prevents the cleaning fluid from running down the outer surface of the window during the cleaning process.

[0102] Fourth, the front surface of the cleaning module is designed so that its position corresponds to the function of the scraper, spray nozzle, suction inlet, and exhaust outlet. Therefore, it also has the advantage of highlighting the function of each structure by designing different configurations of the front surface.

[0103] Fifth, spray air onto the surface facing the window and wipe the window with a squeegee. Therefore, it has the advantage of performing multiple cleaning tasks with a single movement.

[0104] Furthermore, the scraper is positioned above the exhaust outlet. Therefore, the scraper operates after the air jet process as the window cleaning device moves downwards.

[0105] Sixth, foreign objects blown away by the air ejected from the exhaust port can flow into the intake port.

[0106] Seventh, spraying cleaning fluid can improve the operating efficiency of the scraper.

[0107] Eighth, since end outlets are provided at the left and right ends of the cleaning module, it is possible to prevent the cleaning fluid from splashing in the left and right directions. First, the window cleaning device of this disclosure can automatically clean the outer surface of the window. It has the advantage of keeping the outer surface of the window clean.

[0108] Ninth, by directing the cleaning fluid into the suction inlet, it is possible to prevent the cleaning fluid from unnecessarily flowing down the window.

[0109] In addition, a separate space is formed inside for collecting and storing cleaning fluid.

[0110] In addition, it can smoothly collect cleaning fluid through airflow.

[0111] Furthermore, the incoming air can be reused for spraying through the exhaust port. Firstly, the window cleaning device of this disclosure can automatically clean the outer surface of the window. It has the advantage of keeping the outer surface of the window clean.

[0112] The effects of this disclosure are not limited to those mentioned above, and those skilled in the art should be able to clearly understand other effects not mentioned within the scope of the claims. Attached Figure Description

[0113] Figure 1 This is a diagram illustrating the state in which a window cleaning device provided in one embodiment of the present disclosure is configured in a window frame.

[0114] Figure 2 This is a perspective view of a window cleaning device provided in one embodiment of the present disclosure.

[0115] Figure 3This is a perspective view of one side of the main body provided in one embodiment of the present disclosure.

[0116] Figure 4 This is a perspective view of the other side of the main body provided in one embodiment of this disclosure.

[0117] Figure 5 This is a diagram showing one side of the main body for the purpose of illustrating a cleaning module provided in one embodiment of this disclosure.

[0118] Figure 6 This is a partial view showing the front surface of a cleaning module provided in one embodiment of the present disclosure.

[0119] Figure 7 This is a diagram used to illustrate a spray nozzle, inlet, and outlet provided in one embodiment of the present disclosure.

[0120] Figure 8 This is a side cross-sectional view used to illustrate the internal flow path configuration and front surface structure of a cleaning module provided in one embodiment of the present disclosure.

[0121] Figure 9 This is another sectional view used to illustrate the structure of a cleaning module provided in one embodiment of this disclosure.

[0122] Figure 10 This is a diagram illustrating the suction flow path and connecting flow path of a cleaning module provided in one embodiment of this disclosure.

[0123] Figure 11 This is a diagram used to illustrate the discharge flow path and gap space provided in one embodiment of the present disclosure.

[0124] Figure 12 The structure and air flow corresponding to a first configuration of the switching valve provided in one embodiment of this disclosure will be described.

[0125] Figure 13 The structure and air flow corresponding to the second configuration of the switching valve provided in one embodiment of this disclosure will be described.

[0126] Figure 14 This is a perspective view for illustrating a cleaning module and module moving device provided in one embodiment of the present disclosure.

[0127] Figure 15 This is a side cross-sectional view used to illustrate a pressure sensor and related structures configured in a cleaning module according to an embodiment of the present disclosure. Detailed Implementation

[0128] The advantages, features, and methods of achieving these advantages and features of the present invention will become clear from the detailed embodiments described below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and can be implemented in many different forms. These embodiments are provided merely to achieve the completeness of the disclosure of the present invention and to fully disclose the scope of the invention to those skilled in the art, while the scope of protection of the present invention is defined by the scope of the claims. Throughout the specification, the same reference numerals refer to the same constituent elements.

[0129] The terms 'first,' 'second,' and 'third' used in this description are only for distinguishing structures and are not limited thereto.

[0130] Hereinafter, the window cleaning apparatus provided by an embodiment of the present invention will be described with reference to the accompanying drawings.

[0131] Reference Figure 1 The window cleaning device installed in the window frame is described.

[0132] Multiple windows 1 can be configured in window frame 2.

[0133] A window cleaning device 10 is disposed on the window frame 2. The window cleaning device 10 is disposed on one side of the window 1.

[0134] The window cleaning device 10 is configured to move in the left-right direction within the window frame 2. The window cleaning device 10 can clean the window 1 while moving up and down on one side of the window 1.

[0135] The window cleaning device 10 includes: a frame 11, which is mounted on the window frame 2 and moves in the left-right direction of the window frame 2; and a body 100, which is configured on the frame 11 in a manner that allows it to move in the up-down direction.

[0136] The frame 11 is configured to move in the left-right direction within the window frame 2. The frame 11 can be installed in a rectangular shape within the window frame 2. The frame 11 is positioned on one side of the window 1.

[0137] The main body 100 can move vertically along the frame 11 while cleaning the window 1. The main body 100 can remove or wipe away foreign objects from the window 1.

[0138] The window cleaning device 10 includes a screen 294 connected to both the frame 11 and the main body 100. The vertical length of the screen 294 can be deformed according to the configuration of the main body 100.

[0139] Mesh screen 294 can be an insect-proof screen to prevent foreign objects or insects from entering the room.

[0140] One end of the mesh 294 is connected to the upper end of the frame 11. The other end of the mesh 294 is connected to the main body 100. The other end of the mesh connected to the main body 100 can be configured in a coiled shape.

[0141] Therefore, the winding shape of the other end of the mesh 294 changes according to the configuration of the main body 100, thereby enabling the vertical length of the mesh 294 to be deformed.

[0142] Reference Figure 2 The structure of the framework and the main body is explained.

[0143] Frame 11 may have a rectangular shape. Frame 11 may have the same form as a screen frame typically disposed on the outer edge of a window frame.

[0144] The frame 11 includes a pair of side frames 12a and 12b that extend vertically and are spaced apart horizontally.

[0145] The frame 11 includes: an upper frame 14 that connects the upper ends of a pair of side frames 12a and 12b; and a lower frame 16 that connects the lower ends of the pair of side frames 12a and 12b.

[0146] Tracks 18 are respectively provided on a pair of side frames 12a and 12b to guide the vertical movement of the main body 100.

[0147] The track 18 is disposed on the outer peripheral surface of each of the pair of side frames 12a and 12b. The track 18 protrudes outward from the outer peripheral surface of each of the pair of side frames 12a and 12b.

[0148] The main body 100 can move vertically along the track 18.

[0149] The main body 100 includes an outer shell 102 forming the shape. The outer shell 102 includes: a lower shell 110 having a space formed therein; and an upper shell 104 disposed above the lower shell 110.

[0150] Two structures can be configured inside the lower shell 110: a structure for cleaning the window and a structure for moving the main body 100 in the vertical direction.

[0151] A solar panel 106 may be configured on the upper housing 104. The solar panel 106 configured on the upper housing 104 may be a power source for powering the main body 100.

[0152] The upper shell 104 may be formed into a curved shape. The upper shell 104 may have at least one inclined surface.

[0153] Reference Figure 3 The structure of the main body is explained.

[0154] The main body 100 includes an outer shell 102 that forms its shape.

[0155] The outer casing 102 includes: a lower casing 110; and an upper casing 104 disposed above the lower casing 110.

[0156] Spaces for arranging multiple structures are formed inside the lower shell 110 and the upper shell 104.

[0157] A solar panel 106 is installed on the upper shell 104.

[0158] The main body 100 includes a cleaning fluid tank 130, which is disposed inside the outer casing 102 and is used to store cleaning fluid. The main body 100 includes a first pump 150, which draws the cleaning fluid stored in the cleaning fluid tank 130.

[0159] The first pump 150 can supply cleaning fluid through the spray nozzle 240 described below. The first pump 150 can supply cleaning fluid stored in the cleaning fluid tank 130 to the spray nozzle 240 (see reference). Figure 5 ).

[0160] The main body 100 includes a second pump 152 for discharging cleaning fluid collected inside the housing 102. The second pump 152 can also discharge cleaning fluid collected inside the cleaning module 170 described below to the outside of the main body 100.

[0161] The main body 100 includes a battery 128 disposed inside the housing 102 and storing electricity generated by the solar panel 106. The battery 128 can supply power to the structure in which the main body 100 operates. Furthermore, the battery 128 can obtain power from an independent external power source.

[0162] The main body 100 may include a motherboard 126, which is disposed inside the housing 102 and is equipped with multiple electronic components for controlling the electronically operated structure.

[0163] Reference Figure 4 This provides an explanation of another structure of the main body.

[0164] The main body 100 includes a first surface 112 facing the window. The outer shell 102 includes a first surface 112 facing the window. The lower shell 110 includes a first surface 112 facing the window.

[0165] The first surface 112 is configured to face the window when the main body 100 is mounted on the frame 11.

[0166] The main body 100 includes a cleaning module 170 for removing foreign objects from the window. The cleaning module 170 is configured such that a portion of it protrudes from the first surface 112.

[0167] The cleaning module 170 can spray cleaning fluid towards the window. The cleaning module 170 can adhere closely to the window to remove foreign matter adhering to it. The cleaning module 170 can also spray air towards the window.

[0168] The cleaning module 170 includes a scraper 250 on its front surface 174 that is in close contact with the window. The cleaning module 170 also includes a spray nozzle 240 on its front surface 174 that sprays cleaning fluid toward the window.

[0169] An air outlet 192 is formed on the front surface of the cleaning module 170. An air intake 190 is formed on the front surface 174 of the cleaning module 170 for drawing in air or cleaning fluid.

[0170] Here, the front surface 174 of the cleaning module 170 may be a surface configured to face the window.

[0171] An ultrasonic sensor 260 for sensing the distance to the window is disposed on one side surface of the cleaning module 170. The ultrasonic sensor 260 can sense the distance to the window, thereby allowing the cleaning module 170 to be in close contact with the window.

[0172] A surface roughness sensor 262 for sensing whether the window is dirty is disposed on one side surface of the cleaning module 170. The surface roughness sensor 262 can sense whether the window is dirty by sensing the gloss level of the window.

[0173] A mesh module 290 is disposed on the exterior of the first surface 112 of the housing 102. The mesh module 290 is positioned above the cleaning module 170. A mesh 294 is exposed on the mesh module 290. The mesh module 290 has internally formed spaces for arranging the mesh 294 in a wound state.

[0174] As the main body 100 moves up and down along the frame 11, the mesh wrapped inside the mesh module 290 can be unfolded or rolled up.

[0175] A can cover 114 is provided on the first surface 112 of the housing 102 for opening and closing inlets and outlets, which are used to allow the cleaning fluid tank 130 to enter and exit. The first surface 112 of the housing 102 is disposed facing the interior. Therefore, by configuring the can cover 114 in an open manner within the interior space, the user can pull out or replace the cleaning fluid tank 130 from the housing 102.

[0176] A display 120 may be disposed on the first surface 112 of the housing 102. The display 120 may visually notify the user of information related to whether the window cleaning device 10 is working or the external environment.

[0177] A drive gear 116 is disposed on the first surface 112 of the housing 102, and the drive gear 116 is connected to a gear module (not shown) disposed on the frame 11. The main body 100 includes a drive motor 118 for rotating the drive gear 116.

[0178] When the main body 100 is positioned in the lower end region of the frame 11, the drive gear 116 meshes with the gear module 20. Therefore, as the drive gear 116 rotates, the frame 11 and the main body 100 can move in the left-right direction on the window frame 2.

[0179] A pair of shell grooves 122 are formed at both ends of the first surface 112 of the outer shell 102. A mover 124 is disposed in each of the pair of shell grooves 122. The pair of shell grooves 122 extend in the vertical direction.

[0180] Reference Figure 5 and Figure 6 The structure of the front surface of the cleaning module is described.

[0181] The cleaning module 170 includes a cleaning body 172, which has an internal flow path for airflow.

[0182] An intake port 190 and an exhaust port 192 are formed on the front surface 174 of the cleaning body 172. The intake port 190 is located below the exhaust port 192.

[0183] A scraper 250 is disposed on the front surface 174 of the cleaning body 172. The scraper 250 is positioned above the suction port 190 and the discharge port 192. The scraper 250 is positioned above the spray nozzle 240.

[0184] A plurality of suction ports 190 spaced apart in the left-right direction are formed on the front surface 174 of the cleaning body 172. A plurality of discharge ports 192 spaced apart in the left-right direction are formed on the front surface 174 of the cleaning body 172.

[0185] Cleaning module 170 includes fan 230 (see reference) Figure 8 The fan 230 is used to create airflow toward a flow path formed inside the cleaning body 172. The fan 230 exhausts air to an outlet 192 formed on the front surface 174 of the cleaning body 172. The fan 230 also draws air into an intake 190 formed on the front surface 174 of the cleaning body 172.

[0186] A spray nozzle 240 for spraying cleaning fluid is disposed on the front surface 174 of the cleaning body 172. A plurality of spray nozzles 240 are disposed at intervals along the left-right direction on the front surface of the cleaning body 172.

[0187] The spray nozzle 240 is positioned below the outlet 192. The spray nozzle 240 is positioned above the inlet 190.

[0188] The operation of fan 230 allows air and cleaning fluid to flow into the cleaning body 172 through suction port 190. The operation of fan 230 also allows air to be discharged through discharge port 192. The first pump 150 (see reference...) Figure 4 The machine is capable of spraying the cleaning fluid stored in the cleaning fluid tank 130 using the spray nozzle 240.

[0189] A plurality of suction ports 190 and a plurality of discharge ports 192 are formed on the front surface 174 of the cleaning module 170. Each of the plurality of suction ports 190 is disposed below each of the plurality of discharge ports 192.

[0190] The spray nozzle 240 is disposed between a plurality of suction ports 190 spaced apart in the left-right direction. The spray nozzle 240 is disposed between a plurality of discharge ports 192 spaced apart in the left-right direction.

[0191] An ultrasonic sensor 260 is provided on the front surface 174 of the cleaning body 172 for sensing the distance between itself and the window; and a surface roughness sensor 262 for sensing whether the window is contaminated on one side of the surface.

[0192] The plurality of suction ports 190 include end suction ports 190a, which are configured adjacent to the left and right ends of the front surface 174 of the cleaning body 172. The plurality of discharge ports 192 include end discharge ports 192a, which are configured adjacent to the left and right ends of the front surface 174 of the cleaning body 172.

[0193] An end outlet 192a and an end inlet 190a are formed on the front surface 174 of the cleaning body 172, which are adjacent to the left and right ends of the front surface 174.

[0194] The end inlet 190a and the end outlet 192a are configured to be closer to the left and right ends of the front surface 174 than the spray nozzle 240. The end inlet 190a is located below the end outlet 192a.

[0195] The plurality of suction ports 190 include: a first end suction port 190a located at the left end of the front surface 174 of the cleaning body 172; and a second end suction port (not shown) located at the right end of the front surface 174 of the cleaning body 172.

[0196] The plurality of outlets 192 include: a first end outlet 192a located at the left end of the front surface 174 of the cleaning body 172; and a second end outlet (not shown) located at the right end of the front surface 174 of the cleaning body 172.

[0197] It can prevent the cleaning fluid sprayed from the spray nozzle 240 from spraying into areas other than the window 1. The end outlet 192a can perform an air curtain function to ensure that the cleaning fluid sprayed from the spray nozzle 240 does not spray into areas other than the window.

[0198] Reference Figure 7 The spray nozzle is described below.

[0199] The spray nozzle 240 is configured to protrude from the front surface 174 of the cleaning body 172. A spray orifice 244 for spraying cleaning fluid is formed in the spray nozzle 240. The spray orifice 244 is open to the front.

[0200] The spray nozzle 240 includes: an upper protrusion 246 disposed above the spray orifice 244 and protruding forward; and a lower protrusion 248 disposed below the spray orifice 244 and protruding forward. The spray orifice 244 for spraying cleaning fluid is disposed between the upper protrusion 246 and the lower protrusion 248.

[0201] The upper protrusion 246 may have an upwardly convex hemispherical shape. The lower protrusion 248 may have a downwardly convex hemispherical shape.

[0202] The spray nozzle 240 includes a central surface 242, which forms a flat surface in the left-right direction between an upper protrusion 246 and a lower protrusion 248. A spray hole 244 is formed on the central surface 242.

[0203] The upper protrusion 246 and the lower protrusion 248 can guide the cleaning fluid sprayed through the spray hole 244 to diffuse in the left and right direction.

[0204] Therefore, the cleaning fluid sprayed through the spray hole 244 can come into contact with the upper protrusion 246 and the lower protrusion 248 and spread in the left and right directions.

[0205] The spray nozzle 244 can be located between the inlet 190 and the outlet 192, which are configured in the vertical direction.

[0206] Reference Figure 8 The internal structure of one side of the cleaning module will be explained.

[0207] The cleaning body 172 includes: a first front surface 174a on which a scraper 250 is disposed; and a second front surface 174b on which a spray nozzle 240 is disposed. The second front surface 174b is disposed rearward than the first front surface 174a. An intake 190 and an exhaust 192 are formed on the second front surface 174b.

[0208] The second front surface 174b is disposed below the first front surface 174a.

[0209] A scraper 250 is disposed on the first front surface 174a of the cleaning body 172. The scraper 250 is mounted on the cleaning body 172. The scraper 250 may be made of rubber. The scraper 250 may be formed of a material different from that of the cleaning body 172.

[0210] The scraper 250 can be closely attached to the window to remove foreign objects adhering to the window. The scraper 250 includes: a fixing part 252, which is fixed to the cleaning body 172; and a protrusion 254, which protrudes from the front surface 174 of the cleaning body 172 toward the window.

[0211] The fixing part 252 has an 'H' shaped cross-section and is inserted into the inside of the cleaning body 172. The fixing part 252 can fix the scraper 250 to the cleaning body 172.

[0212] The protrusion 254 protrudes forward from the front surface 174 of the cleaning body 172. The protrusion 254 may have a shape in which its width in the vertical direction narrows towards the front. The protrusion 254 may have a shape in which its upper surface slopes in a manner in which its width narrows towards the front.

[0213] An outlet 192 and an inlet 190 are disposed below the scraper 250. The inlet 190 is disposed below the outlet 192.

[0214] The outlet 192 can have a shape in which its width decreases as it moves forward.

[0215] The upper surface of the outlet 192 slopes downwards towards the front. Therefore, air discharged through the outlet 192 can be discharged at a downward angle.

[0216] The inlet 190 may have a shape in which its width expands as it moves forward.

[0217] The upper surface of the intake 190 slopes upwards towards the front. Therefore, cleaning fluid sprayed from above the intake 190 can flow into the intake 190. Furthermore, foreign matter falling from the window through the exhaust port 192 can also flow into the intake 190.

[0218] A spray nozzle 240 is disposed above the inlet 190. The spray nozzle 240 is disposed on the second front surface 174b. The front end of the spray nozzle 240 may be disposed at a position rearward than the first front surface 174a.

[0219] That is, the spray nozzle 240 is configured to be further away from the window than the first front surface 174a. The scraper 250 protrudes forward from the spray nozzle 240.

[0220] An intake port 190 and an exhaust port 192 are provided on the second front surface 174b.

[0221] A forward-projecting end flange 176 is disposed below the second front surface 174b. The end flange 176 is disposed below the suction port 190. The end flange 176 protrudes forward beyond the spray nozzle 240. The end flange 176 allows cleaning fluid sprayed from the spray nozzle 240 to flow into the suction port 190.

[0222] An intake flow path 194 is formed inside the cleaning body 172 to allow airflow into the intake port 190. The lower surface of the intake flow path 194 has a shape that slopes downwards towards the rear.

[0223] The suction flow path 194 extends rearward. Therefore, air or cleaning fluid flowing into the suction flow path 194 via the suction port 190 moves rearward. The suction flow path 194 may have a shape in which its width in the left-right direction narrows towards the rear.

[0224] A connecting flow path 198 is formed behind the intake flow path 194. The connecting flow path 198 is located behind the intake flow path 194 and extends in the left-right direction. A fan 230 is arranged on one side of the connecting flow path 198 to direct the air flowing through the intake flow path 194 towards the connecting flow path 198.

[0225] An exhaust flow path 196 is disposed above the intake flow path 194. A gap space 222, serving as a closed area, can be formed above the intake flow path 194. The exhaust flow path 196 extends forward from the area where the fan 230 is disposed. The exhaust flow path 196 has a structure in which the flow path expands more in the left-right direction as it moves forward. The specific shapes of the exhaust flow path 196 and the gap space 222 can be determined by... Figure 11 Further explanation will follow.

[0226] The discharge flow path 196 has a structure that extends vertically in the front portion. The discharge flow path 196 also has a structure that extends downward in the front portion. The discharge flow path 196 includes a front discharge flow path 196a that extends downward in the front portion.

[0227] The length of the flow path formed in the vertical direction of the front discharge flow path 196a can be increased. A discharge outlet 192 is formed at the lower part of the front discharge flow path 196a.

[0228] The angle θ1 formed by the upper surface of the outlet 192 and the front surface 174 is smaller than the angle θ2 formed by the upper surface of the inlet 190 and the front surface 174.

[0229] The main body 100 moves downward while spraying cleaning fluid through the spray nozzle 240. The main body 100 also moves downward while spraying air towards the outlet 192.

[0230] Since the angle θ1 formed by the upper surface of the outlet 192 and the front surface 174 is smaller than the angle θ2 formed by the upper surface of the inlet 190 and the front surface 174, the air discharged from the outlet 192 can be reflected to the window and flow into the inlet 190.

[0231] Furthermore, the cleaning fluid sprayed through the spray nozzle 240 can also flow into the suction port 190 through the airflow. That is, the cleaning fluid or air can travel the shortest distance to flow into the suction port 190.

[0232] Reference Figure 9 The internal structure of the other side of the cleaning module will be further explained.

[0233] An intake flow path 194 is formed inside the cleaning body 172, which allows air flowing in from the intake port 190. An exhaust flow path 196 is formed inside the cleaning body 172, which allows air to flow out to the exhaust port 192.

[0234] The discharge flow path 196 is positioned above the suction flow path 194. In addition to air, cleaning fluid can also flow in through the suction flow path 194.

[0235] The cleaning body 172 includes a partition wall 182 that separates the suction flow path 194 and the discharge flow path 196 in the vertical direction. The partition wall 182 extends horizontally in such a way as to separate the interior of the cleaning body 172 vertically.

[0236] The lower surface of the suction flow path 194 can be shaped to slope downwards towards the rear. Therefore, the cleaning fluid flowing into the suction flow path 194 can flow towards the collection section 200.

[0237] A collection hole 202 is formed behind the suction flow path 194. The collection hole 202 is open at the top and bottom to connect with the interior of the collection section 200. The collection section 200 is disposed below the collection hole 202. Therefore, air or cleaning fluid flowing backward through the suction flow path 194 flows into the interior of the collection section 200 through the collection hole 202.

[0238] The cleaning module 170 includes a collection section 200, which has a collection chamber 201 for temporarily storing cleaning fluid. The collection section 200 is located behind the suction flow path 194.

[0239] The collection unit 200 is located below the suction flow path 194. Therefore, the cleaning fluid flowing in through the suction flow path 194 can be collected in the collection unit 200.

[0240] The lower surface of the storage unit 200 may have an inclined structure. A discharge port 204 for discharging cleaning fluid is disposed on the lower surface of the storage unit 200. The lower surface of the storage unit 200 forms an inclined surface toward the direction in which the discharge port 204 is disposed.

[0241] The cleaning module 170 includes an upper connecting portion 210, which is disposed above the storage portion 200 and communicates with the storage chamber 201. Because the upper connecting portion 210 is disposed above the storage portion 200, only air rising from the storage portion 200 can flow.

[0242] A communication hole 216 communicating with the collection section 200 can be formed on the lower surface of the upper connecting part 210. A filter 212 can be disposed below the communication hole 216, the filter 212 being used to remove foreign objects from the air flowing in through the suction flow path 194.

[0243] An external air inlet 214 for allowing external air to flow in is formed on the rear surface of the upper connecting part 210. Through the external air inlet 214, external air from the cleaning body 172 can flow into the interior space of the cleaning body 172.

[0244] A switching valve 218 is disposed inside the upper connecting part 210. The switching valve 218 can close one of the external air inlet 214 and the connecting hole 216.

[0245] Switching valve 218 can deliver air flowing through intake path 194 to exhaust path 196 by closing external air inlet 214. Switching valve 218 can also deliver external air from cleaning body 172 to exhaust path 196 by closing communication port 216.

[0246] A fan motor 232 for driving the fan 230 is arranged on one side of the cleaning body 172. By rotating the fan 230, air can flow into the intake flow path 194 and the exhaust flow path 196.

[0247] Reference Figure 10 The inhalation flow path and connecting flow path inside the cleansing body are explained.

[0248] A suction flow path 194 and a connecting flow path 198 are formed in the lower part of the cleaning body 172.

[0249] The intake flow path 194 can deliver air or cleaning fluid flowing in from the intake port 190 to the storage section 200. The connecting flow path 198 allows air to flow through the storage section 200 and the upper connecting section 210. A fan 230 is arranged in the connecting flow path 198. The fan 230 can deliver the air flowing in the connecting flow path 198 to the exhaust flow path 196.

[0250] The suction flow path 194 extends from the front where the suction port 190 is formed toward the rear where the collection section 200 is disposed. The suction flow path 194 has a structure in which the width of the flow path gradually decreases from the front to the rear.

[0251] The suction flow path 194 and the connecting flow path 198 are disposed above the storage section 200. The connecting flow path 198 is configured such that its width increases as it moves from the location where the storage section 200 is disposed toward the location where the fan 230 is disposed.

[0252] The cleaning body 172 has a pair of connecting flow paths 198 arranged on both sides based on the collection section 200. The pair of connecting flow paths 198 extend in the left and right directions based on the collection section 200.

[0253] A fan 230 is configured in each of a pair of connecting flow paths 198. That is, the cleaning module 170 includes a pair of fans 230 respectively configured in a pair of connecting flow paths 198.

[0254] Not shown in the attached diagram, but a pair of connecting flow paths 198 can be connected to the upper connecting part 210 respectively.

[0255] A pair of connecting flow paths 198 and suction flow paths 194 can be positioned above the storage section 200. The lower surface of the storage section 200 forms an inclined surface toward the direction where the discharge port 204 is located.

[0256] An external air inlet 214 is formed above the storage section 200.

[0257] The cleaning body 172 is provided with a first guide wall 184 that separates the suction flow path 194 and the connecting flow path 198. A pair of first guide walls 184 extending in the left-right direction with reference to the collection section 200 are provided in the cleaning body 172.

[0258] The first guide wall 184 is spaced rearward from the front surface of the cleaning body 172 where the suction port 190 is formed.

[0259] The first guide wall 184 can be inclined towards the direction where the collection section 200 is located as it moves rearward. The first guide wall 184 can guide the air or cleaning fluid flowing rearward through the suction flow path 194 to the collection section 200.

[0260] The first guide wall 184 includes: a partition wall 184a spaced rearward from the front surface 174 of the cleaning module 170; and an inclined wall 184b extending rearward from the partition wall 184a. The inclined wall 184b can guide air or cleaning fluid flowing in the suction flow path 194 to the collection section 200.

[0261] The first guide wall 184 includes a rear partition wall 184c extending from the rear end of the inclined wall 184b toward the storage section 200.

[0262] Reference Figure 11 The discharge flow path is explained.

[0263] The discharge passage 196 is located above the partition wall 182. The discharge passage 196 located above the partition wall 182 has the following shape: it extends further from the rear portion where the fan 230 is located toward the front portion where the discharge port 192 is formed.

[0264] A pair of discharge passages 196 are formed above the partition wall 182. A pair of fans 230 are respectively arranged in the pair of discharge passages 196.

[0265] The flow area of ​​each of the pair of discharge flow paths 196 can expand from the rear to the front. A plurality of discharge outlets 192 are arranged at intervals in the left-right direction in front of the discharge flow path 196.

[0266] A gap space 222 is formed between a pair of discharge flow paths 196. The gap space 222 can be an independent space separated from the discharge flow paths 196. Therefore, air flowing in the discharge flow paths 196 will not flow into the gap space 222.

[0267] A second guide wall 186 is disposed on the upper surface of the partition wall 182 to separate the region of the discharge flow path 196. The second guide wall 186 separates the gap space 222 and the discharge flow path 196.

[0268] The second guide wall 186 is disposed around the fan 230 and extends forward.

[0269] The second guide wall 186 includes: a rear guide wall 186a disposed behind the fan 230; an inner guide wall 186b extending forward from one end of the rear guide wall 186a; and an outer guide wall 186c extending forward from the other end of the rear guide wall 186a.

[0270] The inner guide wall 186b is longer than the outer guide wall 186c. The inner guide wall 186b has a gentler slope than the outer guide wall 186c.

[0271] A pair of second guide walls 186, symmetrically arranged in the left-right direction with respect to the center, are disposed on the upper surface of the partition wall 182. A gap space 222 is formed between the pair of second guide walls 186. A space for arranging an ultrasonic sensor 260 and a surface roughness sensor 262 is formed between the pair of second guide walls 186. A space for arranging a pressure sensor 264 may also be formed between the pair of second guide walls 186.

[0272] That is, by arranging multiple sensors in areas away from the fan 230, it is possible to prevent the airflow rate from slowing down at multiple intake ports 190 or multiple exhaust ports 192.

[0273] Reference Figure 12 and Figure 13 The configuration of the switching valve and its corresponding airflow are explained.

[0274] A valve motor 220 is provided on one side of the upper connecting part 210 to change the configuration of the switching valve 218. The valve motor 220 can open the connecting hole 216 or the external air inlet 214 by changing the configuration of the switching valve 218.

[0275] The window cleaning device can operate in a first mode, which is a mode in which the switching valve 218 closes the communication hole 216 and causes the fan 230 to operate.

[0276] The window cleaning device can operate in a second mode, which is a mode in which the external air inlet 214 is closed by the switching valve 218 and the fan 230 and the first pump (or 'pump') 150 are activated.

[0277] In the second mode, the fan speed of 230 can be set to be higher than that in the first mode. The second mode can be activated after the first mode is activated.

[0278] First, refer to Figure 12 The open state of the connecting hole 216 and the corresponding airflow are explained.

[0279] Figure 12 The structure can be configured for the window cleaning device to operate in the second mode.

[0280] When the switching valve 218 closes the external air inlet 214, it opens the connecting hole 216. When the fan 230 is operating, air is discharged to multiple outlets 192 via the discharge path 196.

[0281] Furthermore, the air flowing into the intake 190 due to the operation of the fan 230 flows into the intake flow path 194. The air flowing in the intake flow path 194 passes through the storage section 200 and the upper connecting section 210 and flows into the connecting flow path 198.

[0282] Air flowing from the collection section 200 to the upper connecting section 210 is cleaned of foreign matter as it passes through the filter 212.

[0283] Air can flow in through the intake port 190. In addition, when the cleaning fluid is sprayed using the spray nozzle 240, the cleaning fluid can flow into the intake flow path 194 through the intake port 190.

[0284] The cleaning fluid flowing into the suction flow path 194 is collected inside the collection section 200. Therefore, it is possible to collect the cleaning fluid inside the collection section 200.

[0285] When the second pump 152 is working, the cleaning fluid collected in the collection section 200 can be discharged from the collection section 200 to the outside of the cleaning module 170.

[0286] First, refer to Figure 13 The open state of the external air inlet 214 and the corresponding airflow are explained.

[0287] Figure 13 The structure can be the configuration of the window cleaning device when it is operating in the first mode.

[0288] When the switching valve 218 closes the connecting hole 216, it opens the external air inlet 214. When the fan 230 is operating, air is discharged to multiple outlets 192 via the discharge path 196.

[0289] Furthermore, through the operation of the fan 230, air flows into the connecting flow path 198 via the external air inlet 214. That is, the air that flows into the upper connecting portion 210 via the external air inlet 214 flows into the connecting flow path 198.

[0290] Because the connecting hole 216 is closed, the flow of air through the suction port 190 to the suction flow path 194 is restricted.

[0291] Because air is discharged through multiple outlets 192, it is possible to blow away foreign objects attached to the window.

[0292] Reference Figure 14The module moving device that causes changes to the configuration of the cleaning module is explained.

[0293] The main body 100 includes a module moving device 270 that changes the configuration of the cleaning module 170. The module moving device 270 can move the cleaning module 170 in the front-back direction.

[0294] The module moving device 270 brings the scraper 250 into contact with or away from the window 1. The module moving device 270 also keeps the scraper 250 in close contact with the window 1.

[0295] The module moving device 270 includes: a module motor 272; and a transmission component 276, which rotates by the operation of the module motor 272, thereby moving the cleaning module 170.

[0296] The transfer member 276 is rotatably disposed below the cleaning body 172. The transfer member 276 may have a rod-like shape that is longer in the left-right direction.

[0297] The transmission component 276 moves the cleaning body 172 by rotating using the rotational force of the module motor 272.

[0298] The modular moving device 270 includes a modular motor gear 274 that rotates due to the operation of the modular motor 272.

[0299] The transmission component 276 includes: a first transmission gear 280 that meshes with a module motor gear 274; a pair of second transmission gears 282 that are connected to the lower surface 178 of the cleaning body 172; and a rotating rod 278 that transmits the rotational force of the first transmission gear 280 to the pair of second transmission gears 282 respectively.

[0300] A pair of second transmission gears 282 may be arranged at both ends of the rotating rod 278. A first transmission gear 280 is arranged between the pair of second transmission gears 282.

[0301] The first transmission gear 280 and a pair of second transmission gears 282 are connected to the rotating rod 278 and rotate together.

[0302] A rack 180 that meshes with the transmission member 276 may be disposed on the lower surface 178 of the cleaning body 172. A pair of racks 180 that are spaced apart on both sides and extend in the front-back direction may be disposed on the lower surface 178 of the cleaning body 172.

[0303] Reference Figure 15 The pressure sensor used to sense the contact of the scraper is described.

[0304] The cleaning module 170 includes a pressure sensor 264 for sensing whether the scraper 250 is in close contact with the window. When the scraper 250 contacts the window, a force that pushes the scraper 250 backward can be transmitted to the pressure sensor 264.

[0305] Pressure sensor 264 can precisely sense whether scraper 250 is in contact with the window.

[0306] The cleaning module 170 includes a pressure transmission unit 266. The pressure transmission unit 266 can transmit the force generated at the scraper 250 to the pressure sensor 264. The pressure transmission unit 266 can be formed in the form of an air tube. Therefore, when the scraper 250 contacts the window 1, the air inside the pressure transmission unit 266 is compressed, thereby enabling the force to be transmitted to the pressure sensor 264.

[0307] The preferred embodiments of this disclosure have been illustrated and described above. However, this disclosure is not limited to the specific embodiments described above. Various modifications can be made by those skilled in the art without departing from the spirit of this disclosure as claimed in the claims. Moreover, such modifications should not be understood separately from the technical spirit or prospects of this disclosure.

Claims

1. A window cleaning device, comprising: The outer casing, which forms a shape and includes a first surface facing the window; A mover that causes the outer casing to move; as well as A cleaning module, disposed on the first surface, removes foreign objects from the window. The cleaning module includes: Clean body; A scraper, which is mounted on the cleaning body and protrudes from the cleaning body toward the window; and A spray nozzle, positioned below the scraper, sprays cleaning fluid toward the window. An exhaust port for spraying air toward the window is formed on one side surface of the cleaning body.

2. The window cleaning device according to claim 1, wherein, The discharge port is located below the scraper. The scraper is placed close to the window to remove foreign objects adhering to it. The scraper includes: A fixing part, which is fixed to the cleaning body; and A protrusion that extends from the front surface of the cleaning body toward the window.

3. The window cleaning device according to claim 1, wherein, The outlet is positioned above the spray nozzle.

4. The window cleaning device according to claim 1, wherein, An intake port is formed on one side surface of the cleaning body, and cleaning liquid discharged from the spray nozzle is drawn in through the intake port.

5. The window cleaning device according to claim 4, wherein, The inlet is located below the spray nozzle.

6. The window cleaning device according to claim 4, wherein, The spray nozzle is disposed between the outlet and the inlet.

7. The window cleaning device according to claim 1, wherein, When the scraper is pressed against the window, the housing moves downward.

8. The window cleaning device according to claim 1, wherein, The cleaning body includes a front surface on which the scraper is disposed. The front surface includes: a first front surface; and a second front surface disposed below the first front surface. The second front surface is configured to be spaced further back than the first front surface. The scraper is disposed on the first front surface.

9. A window cleaning device, comprising: The outer casing, which forms its shape, includes a first surface facing the window; A mover that causes the outer casing to move; as well as A cleaning module, disposed on the first surface, removes foreign objects from the window. The cleaning module includes: The cleaning body has an internal suction flow path and an exhaust flow path, and an suction port and an exhaust port on its front surface; A fan, disposed within the cleaning body, forms an airflow toward the intake and exhaust paths; and A scraper, which protrudes from the first surface to contact the window. The inlet and outlet are located below the scraper.

10. A window cleaning device comprising: The outer casing, which forms a shape and includes a first surface facing the window; A mover that causes the outer casing to move; as well as A cleaning module, disposed on the first surface, removes foreign objects from the window. The cleaning module includes: The cleaning body forms an internal space for airflow and has multiple spaced-apart intake ports and multiple exhaust ports on its front surface. A scraper, which protrudes from the front surface to contact the window and is positioned above the suction inlet; and A fan exhausts air to the outlet and draws air into the cleaning unit via the inlet. The following are formed inside the cleaning body: An intake flow path, which supplies airflow into the plurality of intake ports; and An exhaust flow path is disposed above the intake flow path and exhausts air to the plurality of exhaust outlets.

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