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 and including a first surface facing a window, a mover moving the housing in a vertical direction, and a cleaning module configured on the first surface and removing foreign substances from the window. The cleaning module includes a cleaning body having a suction inlet formed on a front surface and an internal suction flow path, a spray nozzle configured on the cleaning body and spraying a cleaning liquid, a fan sucking air through the suction inlet, and a collection portion configured below the suction flow path and collecting the cleaning liquid flowing through the suction flow path.

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 that are installed on the walls of buildings. Therefore, if they are not maintained for a long time, they are easily contaminated by external dust and environmental pollution, which will 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 technical problem to be solved

[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 sprays cleaning fluid onto and sucks it into the window. Furthermore, a window cleaning device is provided that separately collects the sucked-in cleaning fluid.

[0011] Another objective is to provide a window cleaning device that separates the collected cleaning fluid from the flowing air.

[0012] Another objective is to provide a window cleaning device that discharges the accumulated cleaning fluid to the outside.

[0013] Another objective is to provide a window cleaning device with a structure that allows cleaning fluid to flow smoothly into the suction inlet.

[0014] Another objective is to provide a window cleaning device that draws in air through an intake or inlet when the fan is operating. A window cleaning device is also provided that allows cleaning fluid to flow in through the intake as air flows in through it.

[0015] Another objective is to provide a window cleaning device that separates foreign objects and cleaning fluid as air flows in through an intake facing the window.

[0016] Another objective is to provide a window cleaning device for treating accumulated cleaning fluid.

[0017] Another objective is to provide a window cleaning device that changes the fan speed according to the direction of airflow.

[0018] Means for solving technical problems

[0019] To achieve the aforementioned objective, the window cleaning device provided by the embodiments of this disclosure includes: a housing having a shape and including a first surface facing the window; and a mover that moves the housing in a vertical direction.

[0020] The window cleaning device includes a cleaning module disposed on the first surface and for removing foreign objects from the window.

[0021] The cleaning module includes: a cleaning body having an intake port formed on its front surface and an intake flow path formed inside; a spray nozzle disposed on the cleaning body and spraying cleaning liquid; and a fan that draws in air through the intake port.

[0022] The cleaning module includes a collection unit disposed below the suction flow path, which collects the cleaning fluid flowing through the suction flow path.

[0023] The aforementioned collection section is located behind the aforementioned suction flow path. The lower surface of the aforementioned suction flow path forms an inclined surface that slopes downwards towards the rear.

[0024] A collection hole is formed behind the aforementioned suction flow path, with openings at the top and bottom to communicate with the interior of the aforementioned collection section.

[0025] The aforementioned collection section forms a collection chamber for storing the cleaning fluid flowing into the aforementioned suction flow path. A discharge port for discharging the cleaning fluid stored in the collection chamber is disposed on the lower surface of the aforementioned collection section.

[0026] The lower surface of the aforementioned collection section forms an inclined surface facing the direction in which the aforementioned discharge outlet is located.

[0027] An exhaust flow path is formed inside the cleaning body, the exhaust flow path is positioned above the intake flow path, and air flows toward the exhaust port.

[0028] The cleaning body includes an upper connecting part, which is disposed above the collection part and connected to the discharge flow path.

[0029] A communication hole is provided on the lower surface of the aforementioned upper connecting portion, opening to communicate with the interior of the aforementioned storage portion. A filter is disposed below the aforementioned communication hole.

[0030] A connecting flow path is formed inside the cleaning body, connecting the upper connecting portion and the discharge flow path. The connecting flow path is located below the discharge flow path.

[0031] An end flange protruding forward from below the suction port is provided on the front surface of the aforementioned cleaning body.

[0032] The length of the end flange protruding from the front surface is longer than that of the inlet.

[0033] The aforementioned inlet is located below the aforementioned spray nozzle. The upper surface of the aforementioned inlet is configured to slope downwards towards the rear.

[0034] Includes: a pump, which is connected to the above-mentioned storage unit and discharges the cleaning fluid stored in the above-mentioned storage unit to the outside of the above-mentioned housing.

[0035] The window cleaning device includes: a housing that is shaped and includes a first surface facing the window; a mover that moves the housing in a vertical direction; and a cleaning module disposed on the first surface and removing foreign objects from the window.

[0036] The window cleaning device includes: a cleaning fluid tank for storing cleaning fluid; a first pump for supplying the cleaning fluid stored in the cleaning fluid tank to the cleaning module; and a second pump for discharging the cleaning fluid accumulated inside the cleaning module to the outside of the housing.

[0037] The cleaning module includes: a cleaning body having an intake port formed on its front surface and an intake flow path formed inside; a spray nozzle disposed on the cleaning body and spraying cleaning fluid; a fan that draws in air through the intake port; and a collection unit disposed below the intake flow path and collecting the cleaning fluid flowing through the intake flow path.

[0038] The second pump discharged the cleaning fluid stored in the collection section.

[0039] To achieve the aforementioned objective, the window cleaning device provided by the embodiments of this disclosure includes: a housing having a shape and including a first surface facing the window; a mover that moves the housing; and a cleaning module disposed on the first surface and removing foreign objects from the window.

[0040] The cleaning module includes: a cleaning body having an intake port and an exhaust port formed on its front surface, and an external gas inlet formed on a surface facing a direction different from the front surface; and a fan that draws in air through the intake port or the external gas inlet and exhausts air through the exhaust port.

[0041] The cleaning module is equipped with a switching valve that selectively opens or closes the suction port and the connecting hole.

[0042] The aforementioned cleaning body includes an upper connecting portion having an external gas inlet formed on one side surface and a connecting hole formed on the lower side surface. The connecting hole communicates with an intake flow path through which air flows in via the aforementioned intake inlet.

[0043] A filter for removing foreign objects from the air is disposed below the aforementioned connecting hole.

[0044] The aforementioned external gas inlet is located inside the aforementioned housing.

[0045] The cleaning body has the following structures inside: an intake flow path through which air flows from the intake port; and an exhaust flow path disposed above the intake flow path and through which air flows to the exhaust port.

[0046] The width of the aforementioned suction flow path narrows towards the rear, while the width of the aforementioned discharge flow path widens towards the front.

[0047] The cleaning module includes a spray nozzle that protrudes from the front surface of the cleaning body and sprays cleaning fluid toward the window.

[0048] The cleaning body includes: a collection section that collects cleaning fluid flowing in the suction flow path; and an upper connecting section disposed above the collection section.

[0049] An external gas inlet is formed on one side surface of the upper connection portion, and a communication hole is formed on the lower side surface of the upper connection portion. The switching valve is disposed in the upper connection portion.

[0050] When the cleaning fluid is sprayed from the spray nozzle, the switching valve opens the communication port.

[0051] Includes: a cleaning fluid tank for storing cleaning fluid; and a first pump for supplying the cleaning fluid stored in the cleaning fluid tank to the spray nozzle.

[0052] When the first pump supplies the cleaning fluid stored in the cleaning fluid tank to the spray nozzle, the switching valve opens the communication port.

[0053] The aforementioned collection and storage unit includes a discharge outlet, which discharges the collected cleaning fluid.

[0054] Includes a second pump that discharges the cleaning fluid collected in the storage section to the outside of the housing. The second pump is activated when the switching valve closes the communication port.

[0055] The cleaning body is provided with a connecting flow path for connecting the upper connecting portion and the discharge flow path. The connecting flow path extends in a direction perpendicular to the rear surface where the external gas inlet is formed and the lower surface where the connecting hole is formed.

[0056] A collection hole with openings at the top and bottom is formed at the rear of the aforementioned suction flow path to connect with the interior of the aforementioned collection section. The aforementioned upper connecting portion is disposed at the rear of the aforementioned collection hole.

[0057] The aforementioned connecting hole is formed at the same height as or at a higher height than the aforementioned collecting hole.

[0058] It is provided with an end flange, which is disposed below the inlet and protrudes forward toward the front surface where the inlet is located.

[0059] The cleaning module includes: a cleaning fluid tank for storing cleaning fluid; a spray nozzle for spraying the cleaning fluid; and a pump for supplying the cleaning fluid stored in the cleaning fluid tank to the spray nozzle.

[0060] The window cleaning device disclosed herein includes: a housing; a mover that moves the housing; and a cleaning module that removes foreign objects from the window.

[0061] The cleaning module includes: a cleaning body having an intake port and an exhaust port formed on its front surface, and an external gas inlet formed on a surface facing a direction different from the front surface, with an intake flow path disposed inside and an exhaust flow path disposed above the intake flow path; and a fan that draws in air through the intake port or the external gas inlet and exhausts air through the exhaust port.

[0062] The cleaning module includes an upper connecting part, which is disposed behind the suction flow path and connects the suction flow path and the discharge flow path.

[0063] An external gas inlet is formed on the rear surface of the upper connecting portion, and a communication hole communicating with the suction flow path is formed on the lower surface of the upper connecting portion. A switching valve for selectively opening or closing the external gas inlet and the communication hole is disposed inside the upper connecting portion.

[0064] The aforementioned window cleaning device operates in a first mode and a second mode. In the first mode, the switching valve closes the connecting hole and the fan is activated. In the second mode, the switching valve closes the external gas inlet and the fan is activated.

[0065] The fan speed in the second mode is greater than the fan speed in the first mode.

[0066] After activating the first mode, activate the second mode.

[0067] The cleaning module includes a spray nozzle disposed on the cleaning body, which sprays cleaning fluid through the operation of a pump. In the second mode, the pump is activated.

[0068] In the second mode described above, the cleaning fluid flows in through the suction port.

[0069] The window cleaning device disclosed herein includes: a housing having a shape and including a first surface facing the window; a mover that moves the housing; and a cleaning module configured to partially protrude from the first surface and remove foreign objects from the window.

[0070] The cleaning module includes: a cleaning body that forms an airflow space inside, an intake and an exhaust port formed on the front surface facing the window, and an external air inlet formed on the rear surface facing a direction different from the front surface; and a fan disposed in the cleaning body that, by rotating, draws in air through the intake port or the external air inlet and exhausts air through the exhaust port.

[0071] The cleaning body has an intake flow path through which air flows in from the intake port and an exhaust flow path disposed above the intake flow path and through which air flows to the exhaust port.

[0072] The cleaning body includes an upper connecting part, which is disposed behind the suction flow path and connects the suction flow path and the discharge flow path.

[0073] An external gas inlet is formed on the rear surface of the upper connecting portion, and a connecting hole communicating with the suction flow path is formed on the lower surface of the upper connecting portion.

[0074] A switching valve is configured inside the aforementioned upper connection portion to selectively open or close the aforementioned external gas inlet and the aforementioned connecting hole.

[0075] The details of other embodiments are contained in the detailed description and accompanying drawings.

[0076] Invention Effects

[0077] The window cleaning device according to this disclosure has one or more of the following effects.

[0078] 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.

[0079] Secondly, by using cleaning fluid to remove foreign objects adhering to the window and then re-collecting the cleaning fluid, it is possible to prevent cleaning fluid mixed with foreign objects from flowing onto the window. In other words, the window can be kept clean during the operation of the window cleaning device.

[0080] Third, the cleaning fluid accumulated in the collection section is drained to the outside. Therefore, it also has the advantage of maintaining the cleanliness of the inside of the cleaning module.

[0081] Fourth, by configuring a collection section, air and cleaning fluid are separated, so that the incoming air can be filtered out and flow back to the discharge outlet.

[0082] Fifth, by forming a flange below the suction inlet, the cleaning fluid that splashes out after being sprayed toward the window can smoothly flow back into the suction inlet.

[0083] Sixth, by changing the direction of airflow as needed, it has the advantage of reducing fan power consumption. Furthermore, cleaning fluid sprayed towards the window can flow into the intake.

[0084] This prevents cleaning fluid sprayed towards the window from falling onto unwanted areas along the window.

[0085] Seventh, based on the configuration of the suction flow path and the collection section, the cleaning fluid can be separated from the air. In addition, foreign objects contained in the incoming air can be removed by the filter.

[0086] This also has the advantage of being able to remove foreign matter contained in the air and cleaning fluid sprayed toward the window.

[0087] In addition, the collected cleaning fluid is discharged to the outside through the outlet, and the collected cleaning fluid is treated to prevent the cleaning fluid from accumulating inside.

[0088] Eighth, the fan used to draw air in through the intake needs to rotate at a faster speed, therefore, the fan speed can be adjusted. This improves the power efficiency when using the fan.

[0089] 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

[0090] Figure 1This 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.

[0091] Figure 2 This is a perspective view of a window cleaning device provided in one embodiment of the present disclosure.

[0092] Figure 3 This is a perspective view of one side of the main body provided in one embodiment of the present disclosure.

[0093] Figure 4 This is a perspective view of the other side of the main body provided in one embodiment of this disclosure.

[0094] 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.

[0095] Figure 6 This is a partial view showing the front surface of a cleaning module provided in one embodiment of the present disclosure.

[0096] Figure 7 This is a diagram used to illustrate a spray nozzle, inlet, and outlet provided in one embodiment of the present disclosure.

[0097] 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.

[0098] Figure 9 This is another sectional view used to illustrate the structure of a cleaning module provided in one embodiment of this disclosure.

[0099] Figure 10 This is a diagram illustrating the suction flow path and connection flow path of a cleaning module provided in one embodiment of this disclosure.

[0100] Figure 11 This is a diagram used to illustrate the discharge flow path and gap space provided in one embodiment of the present disclosure.

[0101] 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.

[0102] 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.

[0103] Figure 14 This is a perspective view for illustrating a cleaning module and module moving device provided in one embodiment of the present disclosure.

[0104] 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

[0105] 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.

[0106] The terms 'first,' 'second,' and 'third' used in this description are only for distinguishing structures and are not limited thereto.

[0107] Hereinafter, the window cleaning apparatus provided by an embodiment of the present invention will be described with reference to the accompanying drawings.

[0108] Reference Figure 1 The window cleaning device installed in the window frame is described.

[0109] Multiple windows 1 can be configured in window frame 2.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] Mesh screen 294 can be an insect-proof screen to prevent foreign objects or insects from entering the room.

[0117] 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.

[0118] 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.

[0119] Reference Figure 2 The structure of the framework and the main body is explained.

[0120] 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.

[0121] The frame 11 includes a pair of side frames 12a and 12b that extend vertically and are spaced apart horizontally.

[0122] The frame 11 includes: an upper frame 14, which connects the upper ends of a pair of side frames 12a and 12b; and a lower frame 16, which connects the lower ends of the pair of side frames 12a and 12b.

[0123] Tracks 18 are respectively provided on a pair of side frames 12a and 12b to guide the vertical movement of the main body 100.

[0124] 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.

[0125] The main body 100 can move vertically along the track 18.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] The upper shell 104 may be formed into a curved shape. The upper shell 104 may have at least one inclined surface.

[0130] Reference Figure 3 The structure of the main body is explained.

[0131] The main body 100 includes an outer shell 102 that forms its shape.

[0132] The outer casing 102 includes: a lower casing 110; and an upper casing 104 disposed above the lower casing 110.

[0133] Spaces for arranging multiple structures are formed inside the lower shell 110 and the upper shell 104.

[0134] A solar panel 106 is installed on the upper shell 104.

[0135] 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.

[0136] 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 ).

[0137] 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.

[0138] 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.

[0139] 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.

[0140] Reference Figure 4 This provides an explanation of another structure of the main body.

[0141] 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.

[0142] The first surface 112 is configured to face the window when the main body 100 is mounted on the frame 11.

[0143] 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.

[0144] 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.

[0145] 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.

[0146] An air outlet 192 for expelling air is formed on the front surface of the cleaning module 170. An air intake 190 for drawing in air or cleaning fluid is formed on the front surface 174 of the cleaning module 170.

[0147] Here, the front surface 174 of the cleaning module 170 may be a surface configured to face the window.

[0148] 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.

[0149] 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.

[0150] 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.

[0151] 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.

[0152] 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.

[0153] 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.

[0154] 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.

[0155] 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.

[0156] 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.

[0157] Reference Figure 5 and Figure 6 The structure of the front surface of the cleaning module is described.

[0158] The cleaning module 170 includes a cleaning body 172, which has an internal flow path for airflow.

[0159] 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.

[0160] 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.

[0161] 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.

[0162] Cleaning module 170 includes fan 230 (see reference) Figure 8The fan 230 is used to create airflow toward a flow path formed inside the cleaning body 172. The fan 230 expels air to an outlet 192 formed on the front surface 174 of the cleaning body 172. The fan 230 also causes air to flow into an intake 190 formed on the front surface 174 of the cleaning body 172.

[0163] 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.

[0164] The spray nozzle 240 is positioned below the discharge port 192. The spray nozzle 240 is positioned above the suction port 190.

[0165] 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.

[0166] 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.

[0167] 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.

[0168] 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 is provided on one side of the surface for sensing whether the window is contaminated.

[0169] 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.

[0170] An end discharge port 192a and an end suction port 190a are formed on the front surface 174 of the cleaning body 172, which are arranged adjacent to the left and right ends of the front surface 174.

[0171] 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.

[0172] 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.

[0173] The plurality of discharge ports 192 include: a first end discharge port 192a located at the left end of the front surface 174 of the cleaning body 172; and a second end discharge port (not shown) located at the right end of the front surface 174 of the cleaning body 172.

[0174] 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.

[0175] Reference Figure 7 The spray nozzle is described below.

[0176] 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.

[0177] 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.

[0178] The upper protrusion 246 may have an upwardly convex hemispherical shape. The lower protrusion 248 may have a downwardly convex hemispherical shape.

[0179] 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.

[0180] 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.

[0181] 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.

[0182] The spray nozzle 244 can be located between the inlet 190 and the outlet 192, which are configured in the vertical direction.

[0183] Reference Figure 8 The internal structure of one side of the cleaning module will be explained.

[0184] 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.

[0185] The second front surface 174b is disposed below the first front surface 174a.

[0186] 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.

[0187] 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.

[0188] 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.

[0189] 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.

[0190] A discharge port 192 and a suction port 190 are disposed below the scraper 250. The suction port 190 is disposed below the discharge port 192.

[0191] The outlet 192 can have a shape in which its width decreases as it moves forward.

[0192] 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.

[0193] The inlet 190 may have a shape in which its width expands as it moves forward.

[0194] 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.

[0195] 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.

[0196] 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.

[0197] An intake port 190 and an exhaust port 192 are provided on the second front surface 174b.

[0198] 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.

[0199] 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.

[0200] 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.

[0201] 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 a 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.

[0202] 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.

[0203] 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.

[0204] The length of the flow path formed in the vertical direction of the front discharge flow path 196a can be increased. An outlet 192 is formed at the lower part of the front discharge flow path 196a.

[0205] The angle θ1 formed by the upper surface of the discharge port 192 and the front surface 174 is smaller than the angle θ2 formed by the upper surface of the suction port 190 and the front surface 174.

[0206] 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 into the discharge port 192.

[0207] 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 expelled from the outlet 192 can be reflected to the window and flow into the inlet 190.

[0208] 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.

[0209] Reference Figure 9 The internal structure of the other side of the cleaning module will be further explained.

[0210] 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.

[0211] 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.

[0212] 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.

[0213] 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.

[0214] 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.

[0215] 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.

[0216] 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.

[0217] 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.

[0218] The cleaning module 170 includes an upper connecting portion 210, which is disposed above the storage unit 200 and communicates with the storage chamber 201. Because the upper connecting portion 210 is disposed above the storage unit 200, only air rising from the storage unit 200 can flow.

[0219] 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 via the suction flow path 194.

[0220] An external air inlet 214 for allowing external air to flow in is formed on the rear surface of the upper connecting portion 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.

[0221] 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.

[0222] 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.

[0223] 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.

[0224] Reference Figure 10 The inhalation flow path and connecting flow path inside the body are explained.

[0225] A suction flow path 194 and a connecting flow path 198 are formed in the lower part of the cleaning body 172.

[0226] 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 discharge flow path 196.

[0227] 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.

[0228] The suction flow path 194 and the connecting flow path 198 are disposed above the storage unit 200. The connecting flow path 198 is configured such that its width increases as it moves from the location where the storage unit 200 is disposed toward the location where the fan 230 is disposed.

[0229] The cleaning body 172 has a pair of connecting flow paths 198 arranged on both sides with reference to the collection section 200. The pair of connecting flow paths 198 extend in the left and right directions with reference to the collection section 200.

[0230] 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.

[0231] Not shown in the attached diagram, a pair of connecting flow paths 198 can be connected to the upper connecting part 210 respectively.

[0232] A pair of connecting flow paths 198 and suction flow paths 194 can be configured above the storage section 200. The lower surface of the storage section 200 forms an inclined surface toward the direction in which the discharge port 204 is configured.

[0233] An external air inlet 214 is formed above the storage section 200.

[0234] 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.

[0235] The first guide wall 184 is spaced rearward from the front surface of the cleaning body 172 where the suction port 190 is formed.

[0236] 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.

[0237] 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.

[0238] 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.

[0239] Reference Figure 11 The discharge flow path will be explained.

[0240] The discharge flow path 196 is located above the partition 182. The discharge flow path 196, which is located above the partition 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.

[0241] A pair of discharge flow paths 196 are formed above the partition wall 182. A pair of fans 230 are respectively arranged in the pair of discharge flow paths 196.

[0242] 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.

[0243] 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.

[0244] 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.

[0245] The second guide wall 186 is disposed around the fan 230 and extends forward.

[0246] 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.

[0247] 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.

[0248] 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.

[0249] 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 inlets 190 or multiple outlets 192.

[0250] Reference Figure 12 and Figure 13 The configuration of the switching valve and its corresponding airflow are explained.

[0251] A valve motor 220 is disposed on one side of the upper connecting part 210, which changes 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.

[0252] 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.

[0253] 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.

[0254] 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.

[0255] First, refer to Figure 12 The open state of the connecting hole 216 and the corresponding airflow are explained.

[0256] Figure 12 The structure can be configured for the window cleaning device to operate in the second mode.

[0257] 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.

[0258] Furthermore, the air flowing into the intake port 190 through 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 connection section 210 and flows into the connection flow path 198.

[0259] Air flowing from the collection section 200 to the upper connection section 210 is cleaned of foreign matter as it passes through the filter 212.

[0260] 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.

[0261] 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.

[0262] 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.

[0263] First, refer to Figure 13 The open state of the external air inlet 214 and the corresponding airflow are explained.

[0264] Figure 13 The structure can be the configuration of the window cleaning device when it is operating in the first mode.

[0265] When the switching valve 218 closes the connecting hole 216, it opens the external air inlet 214. When the fan 230 is operating, it discharges air through the discharge path 196 to the multiple discharge outlets 192.

[0266] 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.

[0267] Because the connecting hole 216 is closed, the flow of air through the suction port 190 to the suction flow path 194 is restricted.

[0268] Because air is expelled through multiple outlets 192, it is possible to blow away foreign objects attached to the window.

[0269] Reference Figure 14The module moving device that causes changes to the configuration of the cleaning module is explained.

[0270] 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.

[0271] 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.

[0272] 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.

[0273] 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.

[0274] The transmission component 276 moves the cleaning body 172 by rotating using the rotational force of the module motor 272.

[0275] The modular moving device 270 includes a modular motor gear 274 that rotates due to the operation of the modular motor 272.

[0276] 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.

[0277] 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.

[0278] The first transmission gear 280 and a pair of second transmission gears 282 are connected to the rotating rod 278 and rotate together.

[0279] 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.

[0280] Reference Figure 15 The pressure sensor used to sense the contact of the scraper is described.

[0281] 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.

[0282] Pressure sensor 264 can precisely sense whether scraper 250 is in contact with the window.

[0283] 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.

[0284] 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, includes a first surface facing the window; A mover that causes the aforementioned housing to move in the vertical direction; as well as A cleaning module, configured on the aforementioned first surface, removes foreign objects from the window. The cleaning module mentioned above includes: The cleaning body has an intake port and an exhaust port on its front surface, and an intake flow path is formed inside. A spray nozzle, which is disposed on the aforementioned cleaning body, sprays cleaning fluid; A fan, which, when operating, draws in air through the aforementioned intake port; and The collection section is located below the suction flow path and collects the cleaning fluid flowing through the suction flow path.

2. The window cleaning device according to claim 1, wherein, The aforementioned collection section is located behind the aforementioned suction flow path. The lower surface of the aforementioned suction flow path forms an inclined surface that slopes downwards towards the rear.

3. The window cleaning device according to claim 1, wherein, A collection hole is formed behind the aforementioned suction flow path, and the collection hole is open at the top and bottom to communicate with the interior of the aforementioned collection section.

4. The window cleaning device according to claim 1, wherein, The aforementioned collection section forms a collection chamber for storing the cleaning fluid flowing into the aforementioned suction flow path. The lower surface of the aforementioned storage section is provided with a discharge port for discharging the cleaning fluid stored in the storage chamber to the outside.

5. The window cleaning device according to claim 4, wherein, The lower surface of the aforementioned collection section forms an inclined surface facing the direction in which the aforementioned discharge outlet is located.

6. The window cleaning device according to claim 1, wherein, An exhaust flow path is formed inside the cleaning body, the exhaust flow path is positioned above the intake flow path, and air flows toward the exhaust port.

7. The window cleaning device according to claim 6, wherein, The cleaning body includes an upper connecting part, which is disposed above the collection part and connected to the discharge flow path.

8. The window cleaning device according to claim 7, wherein, A connecting hole is provided on the lower surface of the aforementioned upper connecting portion, and the connecting hole is opened in such a way that it communicates with the interior of the aforementioned storage portion. A filter is disposed below the aforementioned connecting hole.

9. A window cleaning device, comprising: The outer casing, which forms a shape, includes a first surface facing the window; A mover that causes the aforementioned housing to move in the vertical direction; A cleaning module, configured on the aforementioned first surface, removes foreign objects from the window. A cleaning fluid tank, which stores the cleaning fluid; The first pump supplies the cleaning fluid stored in the cleaning fluid tank to the cleaning module. as well as The second pump discharges the cleaning fluid collected inside the cleaning module to the outside of the aforementioned housing. The cleaning module mentioned above includes: The cleaning body has an intake port formed on its front surface and an intake flow path formed inside; The spray nozzle is configured on the aforementioned cleaning body and sprays the cleaning solution; A fan, which, when operating, draws in air through the aforementioned intake port; and A collection section is located below the aforementioned suction flow path and collects the cleaning fluid flowing through the suction flow path. The second pump discharges the cleaning fluid stored in the collection section.

10. A window cleaning device comprising: a housing forming an outer shape and including a first surface facing a window; a mover moving the housing; and a cleaning module disposed on the first surface and removing foreign substances from the window, wherein the cleaning module includes: a cleaning body having a suction port and a discharge port formed on a front surface thereof, and an external air flow inlet formed on a surface thereof facing a direction different from the front surface; and a fan sucking air through the suction port or the external air flow inlet and discharging the air through the discharge port when the fan is operated, wherein a switching valve selectively opening or closing the external air flow inlet and the suction port is disposed inside the cleaning module. ​

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