Abstract:
An electric sweeping washing device includes a sweeping washing brush and a water collection system design. The sweeping washing brush includes a body; a sweeping roller brush disposed anteriorly at the body; and a dust collecting box for raking dust; a water absorbing scrubbing roller brush disposed posteriorly at the body; a sprinkler head; and a water absorbing scraper for absorbing water from the water absorbing scrubbing roller brush and raking dirty water. The water collection system design includes a tank divided into a clean water chamber and the dirty water chamber, wherein the sprinkler head, the clean and dirty water chambers, a water absorbing scraper, and the dust collecting box are connected via tubes; a spray motor for withdrawing clean water from the clean water chamber and delivering it to the sprinkler head; and an air intake motor for providing vacuum pressure to the dirty water chamber.

Description:
FIELD OF TECHNOLOGY 
       [0001]    The present invention relates to washing devices for sweeping and washing a floor concurrently or for washing window glass in an electrically driven manner, and more particularly, to an electric sweeping washing device for sweeping and scrubbing the floor and/or rug concurrently and washing windows. 
       BACKGROUND 
       [0002]    Due to technological advancement, there is wide use of the existing art pertaining to cleaning, an indoor environment, such as the floor, with an automated cleaning machine, wherein control logic of a mobile robot enables the cleaning machine capable of vacuum cleaning or floor washing to roam within a space to be swept and cleaned the floor in an automated manner. 
         [0003]    The aforesaid conventional automated cleaning machines fall into two categories, namely floor sweeping machines and floor washing machines. The floor sweeping machines remove dust from the floor by sweeping and vacuum cleaning the floor, but fail to remove tiny dust and smear from the floor or rug. Hence, it is necessary to remove tiny dust and smear with the floor washing machines. 
         [0004]    However, according to the existing art, before its operation begins, automated floor washing machines require spraying a cleaning solution or clean water onto the floor in an automated manner, scrubbing the floor with a roller brush, and collecting dirty water from the floor with a scraper installed behind the roller brush to thereby finalize floor washing. However, during the aforesaid cleaning process, as long as dirty water which results from scrubbing the floor remains on the floor, the floor will still look dirty after the dirty water has dried up, whereas a portion of the floor is likely to absorb water or has a crack, and in consequence dirty water will be kept inside the crack. Moreover, all the existing robotic floor washing machines assertedly claim the capability of recycling 50% of the dirty water on the floor but leaving behind the other 50% of the dirty water on the floor. Hence, it is impossible to wash and clean the floor thoroughly. Since the rug absorbs water, water must not be sprayed onto the rug; hence, it is impossible for the robotic floor washing machine to remove a smear from the rug. 
         [0005]    The Electronic Sweeping Washing Device is a revolutionized floor, rug, and window washing machine. It can sweep and scrub on flat surface and rug concurrently for faster and cleaner result. The Electronics Sweeping Washing Device is time-saving, labor-saving, cost-saving, and space-saving. The Electronics Sweeping Washing Device offers changeable brush for floor and rug with option brush for window cleaner purpose. The sweep washing device is designed to clean with fresh water or wash fluid that spray over the brush surface and vacuumed out the dirty liquid directly to liquid container without landing dirty water to the washing area. For window cleaner simply uses option window brush to clean the windows or tiles. 
       SUMMARY 
       [0006]    From a user&#39;s perspective, conventional tools for use in washing windows, floors, and rugs are difficult to operate, time-consuming, and laborious, not to mention that they have to work in conjunction with various single-function machines. 
         [0007]    With multiple function of Electronics Sweep Washing Device allows user sweeps and washes the floor and the rug easily and quickly, and in a cost-saving, labor-saving, and space-saving manner. Furthermore, the electric sweeping washing device removes smears and tiny dust from the floor and the rug while sweeping the floor and the rug, and can change to option window brush to function as an electric window washer. The electric sweeping washing device prevents dirty water from landing on the floor. 
         [0008]    In order to achieve the above and other objectives, the present invention provides an electric sweeping washing device for use in sweeping and washing a floor or rug. The electric sweeping washing device comprises a sweeping washing brush and a water collection system design. 
         [0009]    The sweeping washing brush comprises: a body having a separating board for demarcating and separating a sweeping washing brush front from a sweeping washing brush rear, wherein an opening of the sweeping washing brush front faces the floor or rug or is aimed at the dust collecting box, wherein an opening of the sweeping washing brush rear faces the floor or rug; a sweeping roller brush disposed inside the sweeping washing brush front, wherein both the sweeping roller brush and a water absorbing scrubbing roller brush are driven by a sweeping washing brush motor to rotate; an auxiliary wheel disposed at the body and between the sweeping washing brush front and the sweeping washing brush rear; the water absorbing scrubbing roller brush disposed inside the sweeping washing brush rear and driven by the sweeping washing brush motor to rotate; a sprinkler head disposed on a side of the water absorbing scrubbing roller brush inside the sweeping washing brush rear and facing the water absorbing scrubbing roller brush; and an water absorbing scraper abutting against another side of the water absorbing scrubbing roller brush inside the sweeping washing brush rear and abutting against the water absorbing scrubbing roller brush to absorb water therefrom. The water absorbing scraper presses against the water absorbing scrubbing roller brush to rake dirty water and tiny dust which results from the rinsing of the water absorbing scrubbing roller brush to thereby keep the water absorbing scrubbing roller brush clean and wet enough to remove tiny dust and smear from the floor or remove dust and smears from the rug. At two ends of the water absorbing scraper are buffer devices (not shown) which come in the form of springs or any other equivalent structures. However, the buffer devices are not regarded as an essential technical feature of the present invention and thus are not described in detail hereunder for the sake of brevity. While the water absorbing scrubbing roller brush is rotating, the buffer devices adjust the degree of tight contact between the water absorbing scraper and the water absorbing scrubbing roller brush, such that the water absorbing scrubbing roller brush rotates smoothly and functions well. 
         [0010]    The water collection system design comprises: a tank; a clean water chamber disposed inside the tank and adapted to contain unused clean water; a dirty water chamber disposed inside the tank and adapted to contain used dirty water; a pipe comprising therein a spray tube, a water absorbing tube and a dust sucking tube, the spray tube connecting the sprinkler head and the clean water chamber via the spray motor, the water absorbing tube connecting the water absorbing scraper and the dirty water chamber, the dust sucking tube connecting the sweeping washing brush front and the water absorbing tube; a spray motor disposed at the tank to withdraw unused clean water from the clean water chamber with the spray tube, wherein the unused clean water thus withdrawn is driven and delivered to the sprinkler head by the spray motor; and an air intake motor disposed at the tank to reduce an internal pressure of the dirty water chamber to vacuum pressure, such that the used dirty water is raked by the water absorbing scraper and delivered to the dirty water chamber via the water absorbing tube, wherein dirt and dust is raked by the sweeping washing brush front and delivered to the dirty water chamber via the dust sucking tube and the water absorbing tube. 
         [0011]    A plurality of mobile rollers is disposed at the bottom of the tank of the electric sweeping washing device. 
         [0012]    As regards the electric sweeping washing device, the sweeping washing brush further comprises a storage battery and a recharging socket. The storage battery supplies power to the sweeping washing brush motor. The recharging socket is electrically connected to the storage battery. 
         [0013]    As regards the electric sweeping washing device, the sweeping roller brush and the water absorbing scrubbing roller brush of the sweeping washing brush are synchronized by a gear train. 
         [0014]    As regards the electric sweeping washing device, a rotation element is disposed at a junction of the body of the sweeping washing brush and the pipe of the water collection system design and adapted to enable the pipe to rotate about the junction and relative to the body. 
         [0015]    In order to achieve the above and other objectives, the present invention provides another electric washing device for use in washing a window. The electric sweeping washing device comprises a washing brush and a water collection system design. 
         [0016]    The washing brush comprises: a body having a washing brush casing, wherein an opening of the washing brush casing faces the window; a water absorbing scrubbing roller brush disposed at the washing brush casing and driven by a washing brushed motor to rotate; a sprinkler head disposed on a side of the water absorbing scrubbing roller brush inside the washing brush casing and facing the water absorbing scrubbing roller brush; an water absorbing scraper disposed on another side of the water absorbing scrubbing roller brush inside the washing brush casing and facing the water absorbing scrubbing roller brush to absorb water therefrom; and a water collecting scraper disposed above the opening. The water absorbing scraper presses against the water absorbing scrubbing roller brush and rakes dirty water and dirt resulting from the rinsing of the water absorbing scrubbing roller brush, such that the water absorbing scrubbing roller brush is kept clean and wet enough to remove smears from the window continuously. 
         [0017]    The water collection system design comprises: a tank; a clean water chamber disposed inside the tank and adapted to contain unused clean water; a dirty water chamber disposed inside the tank and adapted to contain used dirty water; a pipe comprising therein a spray tube and a water absorbing tube, the spray tube connecting the sprinkler head and the clean water chamber via a spray motor, and the water absorbing tube connecting the water absorbing scraper and the dirty water chamber; the spray motor disposed at the tank and adapted to withdraw unused clean water from the clean water chamber and deliver the unused clean water thus withdrawn to the sprinkler head; and an air intake motor disposed at the tank to reduce an internal pressure of the dirty water chamber to vacuum pressure, such that the used dirty water is raked by the water absorbing scraper and delivered to the dirty water chamber via the water absorbing tube. 
         [0018]    A plurality of mobile rollers is disposed at the bottom of the tank of the electric washing device. 
         [0019]    As regards the electric sweeping washing device, the washing brush further comprises a storage battery and a recharging socket. The storage battery supplies power to the washing brushed motor. The recharging socket is electrically connected to the storage battery. 
         [0020]    As regards the electric sweeping washing device, a rotation element is disposed at a junction of the body of the washing brush and the pipe of the water collection system design and adapted to enable the pipe to rotate about the junction and relative to the body. 
     
    
     
       BRIEF DESCRIPTION 
         [0021]    Objectives, features, and advantages of the present invention are hereunder illustrated with specific embodiments in conjunction with the accompanying drawings, in which: 
           [0022]      FIG. 1  is a schematic view of an electric sweeping washing device according to the first embodiment of the present invention; 
           [0023]      FIG. 2  through  FIG. 4  are schematic views of operation of the electric sweeping washing device according to the first embodiment of the present invention; 
           [0024]      FIG. 5  is a schematic view of a water absorbing scrubbing roller brush, a sprinkler head, and a water absorbing scraper of the present invention; 
           [0025]      FIG. 6  is a schematic view of the electric sweeping washing device, wherein the brush is changed; 
           [0026]      FIG. 7  is a top view of a sweeping washing brush according to an embodiment of the present invention; 
           [0027]      FIG. 8  is a schematic view of a rotation element of the present invention; 
           [0028]      FIG. 9  is a schematic view of an electric sweeping washing device according to the second embodiment of the present invention; 
           [0029]      FIG. 10  is a schematic view of a water absorbing scrubbing roller brush, a sprinkler head, and a water absorbing scraper of the present invention; and 
           [0030]      FIG. 11  through  FIG. 13  are schematic views of operation of the electric sweeping washing device according to the second embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION 
       [0031]    Referring to  FIG. 1  through  FIG. 4 , there are shown schematic views of an electric sweeping washing device  1000  according to the first embodiment of the present invention. The electric sweeping washing device  1000  is for use in sweeping and washing a floor  2  (such as a floor and a rug.) The electric sweeping washing device  1000  comprises a sweeping washing brush  100   a  and a water collection system design  200 . 
         [0032]    The sweeping washing brush  100   a  comprises a body  110 , a sweeping roller brush  160   a , an auxiliary wheel  170 , a water absorbing scrubbing roller brush  120   a , a sprinkler head  130 , and an water absorbing scraper  140 . 
         [0033]    The body  110  has a separating board S for demarcating and separating a sweeping washing brush front  111   a  from a sweeping washing brush rear  112   a . Both the opening of the sweeping washing brush front  111   a  and the opening of the sweeping washing brush rear  112   a  face the floor  2 . 
         [0034]    The sweeping roller brush  160   a  is disposed inside the sweeping washing brush front  111   a  and driven by a sweeping washing brush motor  121   a  to rotate. 
         [0035]    The auxiliary wheel  170  is disposed at the body  110 , between the sweeping washing brush front  111   a  and the sweeping washing brush rear  112   a , and on two sides of the sweeping washing brush  110 . 
         [0036]    The water absorbing scrubbing roller brush  120   a  is disposed inside the sweeping washing brush rear  112   a  and driven by the sweeping washing brush motor  121   a  to rotate. 
         [0037]    The sprinkler head  130  is disposed on an inner side of the sweeping washing brush rear  112   a . The sprinkler head  130  faces the water absorbing scrubbing roller brush  120   a  and washes off tiny dust and dirt otherwise adhered to the water absorbing scrubbing roller brush  120   a  as a result of scrubbing the floor and the rug, thereby keeping the water absorbing scrubbing roller brush  120   a  clean and wet enough to remove tiny dust and smears from the floor and the rug repeatedly. 
         [0038]    The water absorbing scraper  140  is disposed on another inner side of the sweeping washing brush rear  112   a  to press against the water absorbing scrubbing roller brush  120   a  so as for the water absorbing scraper  140  to rake dirty water and tiny dust on the water absorbing scrubbing roller brush  120   a . At the two ends of the water absorbing scraper  140  are buffer devices (not shown) which come in the form of springs or any other equivalent structures. The buffer devices are not regarded as an essential technical feature of the present invention and thus are not described in detail hereunder for the sake of brevity. While the water absorbing scrubbing roller brush  120   a  is rotating, the buffer devices adjust the degree of tight contact between the water absorbing scraper  140  and the water absorbing scrubbing roller brush  120   a , such that the water absorbing scrubbing roller brush  120   a  not only rotates smoothly but also functions well. The water absorbing scrubbing roller brush  120   a  and the sweeping roller brush  160   a  are changeable as needed. 
         [0039]    The sweeping washing brush  100   a  comprises a storage battery  180  and a recharging plug  190  electrically connected to the storage battery  180 . The storage battery  180  supplies power to the sweeping washing brush motor  121   a  to drive the sweeping washing brush motor  121   a  to rotate. A user can insert the recharging plug  190  into a recharger (not shown) to recharge the storage battery  180 . 
         [0040]    The water collection system design  200  comprises a tank  210 , a clean water chamber  220 , a dirty water chamber  230 , a pipe  240 , a spray motor  250 , and an air intake motor  260 . 
         [0041]    The clean water chamber  220  is disposed inside the tank  210  and contains clean water available for use. 
         [0042]    The dirty water chamber  230  is disposed inside the tank  210  and contains dirty water which results from clean water usage. 
         [0043]    The pipe  240  comprises therein a spray tube  241 , a water absorbing tube  242 , and a dust sucking tube  243 . The spray tube  241  connects the sprinkler head  130  to the spray motor  250  and the clean water chamber  220 . 
         [0044]    The water absorbing tube  242  connects the water absorbing scraper  140  and the dirty water chamber  230 . The dust sucking tube  243  connects the sweeping washing brush front  111   a  and the water absorbing tube  242  to the dirty water chamber  230 . 
         [0045]    The spray motor  250  is disposed at the tank  210  to withdraw unused clean water from the clean water chamber  220  with the spray tube  241 . Then, the unused clean water thus withdrawn is driven and delivered to the sprinkler head  130  by means of the spray motor  250 . 
         [0046]    The air intake motor  260  is disposed at the tank  210  to reduce the internal pressure of the dirty water chamber  230  to vacuum pressure, such that the used dirty water is raked by the water absorbing scraper  140  and delivered to the dirty water chamber  230  by means of the water absorbing tube  242 ; meanwhile, dirt and dust is raked by the sweeping washing brush front  111   a  and delivered to the dirty water chamber  230  by means of the dust sucking tube  243  and the water absorbing tube  242 . 
         [0047]    The electric sweeping washing device  1000  sweeps and washes the floor  2  by following the steps described hereunder. The sweeping roller brush  160   a  is driven by the sweeping washing brush motor  121   a  to rotate and start sweeping the floor and the rug  2 ; meanwhile, the water absorbing scrubbing roller brush  120   a  is also driven by the sweeping washing brush motor  121   a  to scrub the floor or rug  2 . Furthermore, the sprinkler head  130  sprinkles unused clean water on the water absorbing scrubbing roller brush  120   a  continuously to thereby rinse the water absorbing scrubbing roller brush  120   a . Furthermore, the water absorbing scraper  140  collects dust-containing and dirt-containing dirty water from the water absorbing scrubbing roller brush  120   a  and conveys the dirty water to the dirty water chamber  230  continuously. In so doing, the water absorbing scrubbing roller brush  120   a  is kept clean and wet all the time and therefore fit to clean the floor or rug  2  repeatedly. 
         [0048]    Referring to  FIG. 1  through  FIG. 4 , the user cleans the floor or rug  2  with the sweeping washing brush  100   a  by following the steps described hereunder. 
         [0049]    First, the sweeping roller brush  160   a  sweeps most of the dust, dirt, and hair into the sweeping washing brush front  111   a . Then, the dust, dirt, and hair ends up in the dust sucking tube  243  by suction, because the air intake motor  260  reduces the internal pressure of the dirty water chamber  230  to vacuum pressure. Afterward, the dust, dirt, and hair enters the water absorbing tube  242  and be mixed with the dirty water before being collected and stored in the dirty water chamber  230 . 
         [0050]    The water absorbing scrubbing roller brush  120   a  scrubs the floor or rug  2  to rake the dust and smears spared by the sweeping roller brush  160   a.    
         [0051]    The clean water stored in the clean water chamber  220  is withdrawn by the spray motor  250  and delivered via the spray tube  241  to the sprinkler head  130 , such that the sprinkler head  130  sprinkles the clean water onto the water absorbing scrubbing roller brush  120   a  to thereby wash off the dust or dirt otherwise attached to the water absorbing scrubbing roller brush  120   a  as a result of its scrubbing the floor. 
         [0052]    Due to the vacuum pressure generated by the air intake motor  260 , dust-containing and dirt-containing dirty water on the water absorbing scrubbing roller brush  120   a  is raked by the water absorbing scraper  140  and delivered via the water absorbing tube  242  to the dirty water chamber  230 . 
         [0053]    Before starting to sweep and wash the floor and the rug with the electric sweeping washing device  1000 , the user takes out the clean water chamber  220  and fills it with clean water. 
         [0054]    When the clean water is going to run out and the dirty water chamber  230  is going to be full of dirty water, the user may take out the dirty water chamber  230  and empty it. In doing so, the sweeping roller brush  160   a  is capable of sweeping the floor and the rug continuously, and the water absorbing scrubbing roller brush  120   a  is kept clean all the time. A plurality of mobile rollers  270  is disposed at the bottom of the tank  210 . The mobile rollers  270  enable the user to move the water collection system design  200  of the electric sweeping washing device  1000  easily. 
         [0055]    Persons skilled in the art are able to infer from  FIG. 5  that the sprinkler head  130  is positioned on one side of the water absorbing scrubbing roller brush  120   a , and that the water absorbing scraper  140  is positioned on the other side of the water absorbing scrubbing roller brush  120   a . Hence, not only is the water absorbing scrubbing roller brush  120   a  cleaned efficiently, but the water absorbing scraper  140  can also remove and rake the dirty water on the water absorbing scrubbing roller brush  120   a  efficiently. 
         [0056]    Referring to  FIG. 6 , there is shown a schematic view of the electric sweeping washing device  1000 , wherein the brush is changed. The electric sweeping washing device  1000  is advantageously characterized in that the user can connect the washing brush  100  or the sweeping washing brush  100   a  to the pipe  240  and the water collection system design  200  as needed. The washing brush  100  or the sweeping washing brush  100   a  is connected to the pipe  240  by a mortise-and-tenon joint. For example, the pipe  240  has therein a recess, wherein the washing brush  100  or the sweeping washing brush  100   a  has thereon a protruding post corresponding in position to the recess. 
         [0057]    In conclusion, the electric sweeping washing device of the present invention sweeps, vacuum-cleans, and scrubs the floor concurrently and thus speeds up the aforesaid cleaning process efficiently. 
         [0058]    Furthermore, with the water absorbing scrubbing roller brush being clean and wet all the time, the user can sweep and wash the floor or rug easily, quickly, and in a labor-saving manner. Furthermore, with the electric sweeping washing device, the user performs floor sweeping and floor washing concurrently, thereby dispensing the hassle of operating various single-function floor sweeping devices, floor washing devices, vacuum cleaning devices, and rug cleaning devices; hence, the electric sweeping washing device is time-saving, labor-saving, and cost-saving. Furthermore, the electric sweeping washing device in operation prevents dirty water from landing on the floor; hence, not only does the floor thus swept and washed display no trace of residue, but the rug thus swept and washed also dries quickly to thereby extend its service life. 
         [0059]    Referring to  FIG. 7 , the water absorbing scrubbing roller brush  120   a  of the sweeping washing brush  100   a  comprises a first gear  122 , whereas the sweeping roller brush  160   a  of the sweeping washing brush  100   a  comprises a second gear  123 . The first gear  122  and the second gear  123  together form a gear train. As soon as the sweeping washing brush motor  121   a  drives the water absorbing scrubbing roller brush  120   a  to rotate, the first gear  122  drives the second gear  123  to rotate, thereby causing the sweeping roller brush  160   a  to rotate. 
         [0060]    Referring to  FIG. 8 , a rotation element  280  is disposed at the junction of the body  110  of the sweeping washing brush  100   a  and the pipe  240  of the water collection system design  200 . The rotation element  280  enables the pipe  240  to rotate about the junction and relative to the body  110  and thus be readily accessible by a user. 
         [0061]    Referring to  FIG. 9  through  FIG. 13 , there are shown schematic views of an electric sweeping washing device  3000  according to the second embodiment of the present invention. The electric sweeping washing device  3000  is for use in washing a window  1 . The electric sweeping washing device  3000  comprises a washing brush  100  and a water collection system design  200 . 
         [0062]    The washing brush  100  comprises a body  110 , a water absorbing scrubbing roller brush  120 , and a sprinkler head  130 . 
         [0063]    The body  110  has a washing brush casing  111 . The opening of the washing brush casing  111  faces the window  1 , as shown in  FIG. 13 . 
         [0064]    The water absorbing scrubbing roller brush  120  is disposed inside the washing brush casing  111  and driven by a washing brushed motor  121  to rotate. 
         [0065]    The sprinkler head  130  is disposed inside the washing brush casing  111 . The sprinkler head  130  faces the water absorbing scrubbing roller brush  120  and washes off tiny dust and dirty water otherwise adhered to the water absorbing scrubbing roller brush  120  as a result of scrubbing the window glass, thereby keeping the water absorbing scrubbing roller brush  120  clean and wet enough to remove tiny dust and smears otherwise adhered to the window glass. 
         [0066]    The water absorbing scraper  140  is disposed inside the washing brush casing  111  and presses against the water absorbing scrubbing roller brush  120  so as for the water absorbing scraper  140  to rake dirty water and tiny dust on the water absorbing scrubbing roller brush  120   a.    
         [0067]    At the two ends of the water absorbing scraper  140  are buffer devices (not shown) which come in the form of springs or any other equivalent structures. While the water absorbing scrubbing roller brush  120  is rotating, the buffer devices adjust the degree of tight contact between the water absorbing scraper  140  and the water absorbing scrubbing roller brush  120 , such that the water absorbing scrubbing roller brush  120  not only rotates smoothly but also functions well. The water absorbing scrubbing roller brush  120  is changeable as needed. 
         [0068]    The washing brush  100  comprises a storage battery  180  and a recharging plug  190  electrically connected to the storage battery  180 . The storage battery  180  supplies power to the washing brushed motor  121  to drive the washing brushed motor  121  to rotate. The user can insert the recharging plug  190  into a recharger (not shown) to recharge the storage battery  180 . 
         [0069]    The water collecting scraper  150  is disposed beside the opening of the washing brush casing  111  and disposed above the opening of the washing brush casing  111 . 
         [0070]    The water collection system design  200  has a tank  210 . 
         [0071]    The clean water chamber  220  is removably disposed inside the tank  210  and adapted to contain the unused clean water. 
         [0072]    The dirty water chamber  230  is removably disposed inside the tank  210  and adapted to contain the used dirty water. 
         [0073]    The pipe  240  comprises therein a spray tube  241  and a water absorbing tube  242 . The spray tube  241  connects the sprinkler head  130  and the clean water chamber  220 . The water absorbing tube  242  connects the water absorbing scraper  140  and the dirty water chamber  230 . 
         [0074]    The spray motor  250  is disposed at the tank  210  to withdraw unused clean water from the clean water chamber  220  with the spray tube  241 . Then, the unused clean water thus withdrawn is driven and delivered to the sprinkler head  130  by means of the spray motor  250 . 
         [0075]    The air intake motor  260  is disposed at the tank  210  to reduce the internal pressure of the dirty water chamber  230  to vacuum pressure, such that the used dirty water is raked by the water absorbing scraper  140  and delivered to the dirty water chamber  230  by means of the water absorbing tube  242 . A plurality of mobile rollers  270  is disposed at the bottom of the tank  210 . The mobile rollers  270  enable the user to move the water collection system design  200  of the electric sweeping washing device  1000  easily. 
         [0076]    The process of cleaning the window  1  with the electric washing device  3000  entails following the steps described hereunder. The water absorbing scrubbing roller brush  120  of the washing brush  100  is driven by the washing brushed motor  121  to scrub the window  1 . The sprinkler head  130  faces the water absorbing scrubbing roller brush  120  and washes off tiny dust and dirty water otherwise adhered to the water absorbing scrubbing roller brush  120  as a result of scrubbing the window  1 , thereby keeping the water absorbing scrubbing roller brush  120  clean and wet enough to remove the tiny dust and smears from the window  1  repeatedly. The water absorbing scraper  140  presses against the water absorbing scrubbing roller brush  120  in order to rake dirty water and tiny dust and delivers to the dirty water chamber  230  the dirt and dirty water adhered to the water absorbing scrubbing roller brush  120  as a result of scrubbing the window  1 . Hence, the water absorbing scrubbing roller brush  120  is kept clean all the time and thus fit to clean the window  1  repeatedly. 
         [0077]    Referring to  FIG. 9  through  FIG. 13 , there are shown schematic views of operation of the electric sweeping washing device according to the third embodiment of the present invention, wherein the washing brush  100  and the window  1  are shown. 
         [0078]    During the process of cleaning the window  1  with the water absorbing scrubbing roller brush  120 , the clean water stored in the clean water chamber  220  is taken in by the spray motor  250 , delivered by the spray tube  241 , and sprinkled by the sprinkler head  130  onto the water absorbing scrubbing roller brush  120  to thereby remove dust or dirt from the water absorbing scrubbing roller brush  120 . 
         [0079]    The air intake motor  260  reduces the internal pressure of the dirty water chamber  230  to vacuum pressure, such that the water absorbing scraper  140  rakes dust-containing or dirt-containing dirty water on the water absorbing scrubbing roller brush  120  and delivers the dirty water to the water absorbing tube  242 , and in consequence the dirty water is collected in the dirty water chamber  230 . Furthermore, redundant water on the window  1  is efficiently removed by the water collecting scraper  150  and absorbed by the scrubbing roller brush. 
         [0080]    Before starting to use the electric sweeping washing device  3000 , the user may take out the clean water chamber  220  and fill it with clean water (i.e., unused clean water.) 
         [0081]    After the clean water has run out and turned into dirty water (i.e., used dirty water) and thus has been stored in the dirty water chamber  230 , the user can take out the dirty water chamber  230  and empty the dirty water chamber  230 . Hence, to clean the window  1 , it is not necessary for the user to sprinkle clean water onto the window  1  or wash a wiper before scrubbing the window  1 . 
         [0082]    Furthermore, the water absorbing scrubbing roller brush  120  is kept clean all the time and driven by the washing brushed motor  121  to scrub the window  1  continuously. Referring to  FIG. 13 , the sprinkler head  130  is disposed on one side of the water absorbing scrubbing roller brush  120 , whereas the water absorbing scraper  140  is disposed on the other side of the water absorbing scrubbing roller brush  120 . In so doing, not only is the water absorbing scrubbing roller brush  120  cleaned efficiently, but the water absorbing scraper  140  also removes dirty water from the water absorbing scrubbing roller brush  120  efficiently. 
         [0083]    In conclusion, the present invention provides an electric washing device characterized by a sprinkler head, a water absorbing scraper, a clean water chamber, a dirty water chamber, and a pipe which together keep a water absorbing scrubbing roller brush clean all the time, such that a user cleaning a window need not sprinkle water onto the window or rinse a wiper repeatedly in order to clean the window glass. Accordingly, the electric washing device of the present invention is effective in speeding up the cleaning process and preventing dirty water from landing on the floor. 
         [0084]    The present invention is disclosed above by preferred embodiments. However, persons skilled in the art should understand that the preferred embodiments are illustrative of the present invention only, but should not be interpreted as restrictive of the scope of the present invention. Hence, all equivalent modifications and replacements made to the aforesaid embodiments should fall within the scope of the present invention. Accordingly, the legal protection for the present invention should be defined by the appended claims.