ES2632401A1 - System and automatic method for cleaning crystals in\rwindows and facades glazed (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

System and automatic method for cleaning glass in windows and glass facades comprising a drive system (10), a cleaning element (20), a hydraulic system (30), a drying system (40) and a protective cover (50) ) and where the motor system (10) comprises electric motors (11), which rotate endless screws (12) causing the rise of a set formed by the cleaning elements (20) and drying (40); and wherein during the upward movement a rotating brush (21) together with a glass cleaner product perform the cleaning action of the entire surface of the glass; and where once the upper limit of the window to be cleaned has been reached, a rubber element of the drying system (40) is extended and the direction of rotation of the electric motors (11) is inverted. (Machine-translation by Google Translate, not legally binding)

Description

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SYSTEM AND AUTOMATIC METHOD FOR CLEANING CRYSTALS IN WINDOWS AND GLASSED FAÇADES

DESCRIPTION

The present invention is related to a system and an automatic method for cleaning windows and glass facades, and more specifically, to a system and method of the type that can be used in the cleaning of any type of glazing, window and / or windows. The present invention is especially suitable for use on the outside of any type of building due to the inherent difficulty in cleaning.

State of the art

At present, the cleaning of the glazing of skyscrapers and similar buildings is done through specially qualified employees, with a previous training of 18 months, who work as a couple on a mobile scaffold, and are practically hanging by a thread. Keep in mind that there are skyscrapers that reach more than 400 meters, such as the Burj Khalifa in Dubai of 828 meters, the Makkah Royal Clock Tower Hotel in Mecca of 601 meters, the One World Trade Center in New York City of 541 meters, the Shanghai Word Financial Center in Shanghai, of 492 meters, or the International Commerce Center, in Hong Kong of 484 meters

The windshield wiper mechanisms of vehicles, trains, boats, trams or airplanes are also well known in the state of the art. It is a widely extended mechanism, which allows the vehicle's windows to be cleaned of water and dirt, considerably improving driving vision. However, its configuration consisting of an arm that can rotate in volume to one of its ends, and that has a long rubber edge attached to one of its sides, implies a pendular sweep on the glass, cleaning only the central part of the glass and leaving the upper and lateral edges uncleaned.

Attempts have been made to develop some automatic glass cleaners for building glazing, but they incorporate rotary brushes or rollers with cleaning mechanisms.

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drive with lateral or perpendicular motors to the glazing, which prevent adaptation to recessed glazed holes, or involve controls and movement mechanisms in two dimensions, height and width, which increases their costs and limits their functionality.

To solve the above problems, the document ES2529940 describes a configuration applicable to any glazing and comprising a carriage provided with sweeping motion on the plane of the glazing, and in which at least one brush in contact with the glazing is mounted , contact that is maintained during its sweeping movement, and that therefore effects the cleaning of said glazing. This document also incorporates a scrubber comprising cleaning liquid sprayers directed towards the glazing. However, this system cannot efficiently clean windows in tall buildings or houses with large windows, which are the type of buildings that most need an automatic cleaning system to avoid safety problems for cleaning workers when These work at height.

Another document known in the state of the art is the international patent application number WO0101840 which describes an apparatus for cleaning a window comprising a windshield wiper and a belt and a zipper mechanism for moving the windshield wiper through the surface of window. This document also describes a hose that extends through the window frame and provides a means to transport a cleaning liquid from the inside of the window to its outer face. The windshield wiper can be activated without a motor, for example, by means of a horizontal bar through its inner face and by means of a belt and a cogwheel mechanism, the windshield wiper moves on the outer face of the window, cleaning it. Other similar documents describing similar systems are US2007044259 and EP0538521.

On the other hand, WO2010019037 describes a window assembly comprising a frame and a window pane and at least one cleaning device for cleaning a face of the glass that includes means for moving the cleaning device in a direction of movement on the surface of the glass, in which the cleaning device has a dimension that corresponds at least substantially to the size of the window glass in a transverse direction

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perpendicular to the direction of movement; and wherein the cleaning device comprises at least one rotation body, which is rotatable about a rotation axis parallel to the transverse direction; and wherein the rotating body comprises at least one lip and at least one cleaning element that are connected to each other, so that the lip and the cleaning element is alternately presented in contact with the window pane when the body is rotated rotary.

Description of the invention

The object of the present invention is a system and an automatic method for cleaning windows and glazed windows, preferably in several buildings and structures, and more preferably in glass buildings and / or windows installed in sliding windows. For this, the system consists of a driving system, a cleaning element, a hydraulic system, a drying system and a protective cover.

More specifically, the present invention describes, in a first aspect, an automatic system for cleaning windows and glass facades comprising a drive system, a cleaning element, a hydraulic system, a drying system and a protective cover and which characterized in that the drive system comprises electric motors, which rotate sinfm screws producing the ascent of a set formed by the cleaning and drying elements; and where during the ascent movement a rotating brush together with a glass cleaner product perform the cleaning action of the entire surface of the glass; and where once the upper limit of the window being cleaned has been reached, a rubber element of the drying system is extended and the direction of rotation of the electric motors is reversed.

In a particular embodiment, the sinfm screws are joined at the top by means of an upper bar to give rigidity to the structure, which has two bearings installed to allow the rotation of the sinfm screws. On the other hand, the drive system comprises a plurality of springs as a suspension to allow the total cleaning of the surface of a window glass in such a way that when the drying element comes into contact with the top bar of the drive system the springs are compressed allowing to continue with the upward movement of the element

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cleaner.

In a particular embodiment, the cleaning element comprises a rotating brush through which a glass cleaner product circulates towards the surface of the window glass; and where the rotating brush is formed by: a nozzle to allow the glass cleaner product to enter; an inner cylinder to fix the cleaning element to the structure of the drive system; a perforated outer cylinder to allow the product to pass from the nozzle to the roller; a plurality of bristles or the like that will form the structure of the rotating brush to clean the surface of the glass; and a cylindrical seal to allow the brush to rotate.

In a particular embodiment, the hydraulic system comprises a reservoir for storing a glass cleaner product and / or water; a hydraulic pump to boost the flow of cleaning product; two hollow cubic shaped pieces to allow the flow to the nozzle; a plurality of cylindrical ducts for connecting the system through which the glass cleaner flow circulates; and two guide channels through which the water from the tank circulates, from the upper end of the ducts to the hollow cubic shaped pieces that ascend and descend inside.

In a particular embodiment, the drying system comes into operation when the upward movement of the drive system ends and comprises a rubber element and a part that is attached to the drive system by means of springs configured as suspension elements.

In another particular embodiment, the protective cover comprises an upper bar to protect the ball bearings at the upper end of the screw screws; and a drawer in the lower part provided with a hinged lid configured to store the assembly of the cleaning element and the drying system when it is not in operation; and where the electric motors are installed inside the protective cover, as well as the sealed tank of the hydraulic system; and two side bars, one on each side, to protect the sinfm screws and to serve as a gma channel to the part where the tires are installed.

Finally, in a second aspect of the invention a method for automatic window cleaning and glazed facades, implemented, is described.

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in the cleaning system object of the present invention which comprises the steps of: (a) operating the system by operating electric motors which rotate sinfm screws producing the ascent of the assembly formed by the cleaning and drying elements; (b) and where at the moment in which the set begins to rise, a rotating brush together with a glass cleaner product performs the cleaning action of the entire surface of the glass; (c) and where once the upper limit of the window being cleaned has been reached, the excess cleaning product is removed from the glass surface to obtain a suitable finish by extending a rubber element of the drying system (40) and the direction of rotation of the motors is reversed.

The present invention describes a modular system with protective cover and installable in existing infrastructures already present or this value can be included added to any future building, with which a significant saving in installation costs can be achieved, assuming, in addition, a clear technical advantage over the documents cited in the state of the art.

The system object of the invention also has the particularity of incorporating a motor system that allows to advance by means of a plurality of ranges driven by an endless screw, which allows it to make as many passes as necessary until the appropriate cleaning occurs , where in a first phase the glass is washed, while in a second phase said glass is dried. All this, in addition, taking into account that the washing device is independent of the drying device.

The system object of the invention has a scrubber or cleaning element, which is a rotating roller fed with a cleaning liquid agent as described in detail later in this specification. In addition, the washer incorporates a hydraulic conduction system that materializes through gmas and a piece that runs in them that channels the liquid to the washing roller.

A particular feature of the system of the invention in relation to the documents cited in the state of the art is that the irrigation of the glass is not carried out by sprays and is moved with the cleaning device.

The system of the invention comprises a retractable dryer that incorporates a

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spring retention / expulsion mechanism. The mechanism of retraction of the dryer is performed by the action of a cam that runs through a few gtias.

Finally, the system of the invention, in front of the different devices mentioned in the state of the art, allows the cleaning of sliding windows with the particularity that said cleaning (whether sliding windows or otherwise) is performed vertically. It should also be noted that in the cleaning of sliding windows there is a roller tilting device that allows the glass to be cleaned to one end.

Throughout the description and claims the word "comprises" and its variants are not intended to exclude other technical characteristics, additives, components or steps. For those skilled in the art, other objects, advantages and characteristics of the invention will emerge partly from the description and partly from the practice of the invention. The following examples and drawings are provided by way of illustration, and are not intended to restrict the present invention. In addition, the present invention covers all possible combinations of particular and preferred embodiments indicated herein.

Brief description of the figures

A series of drawings that help to better understand the invention and that expressly relate to an embodiment of said invention that is presented as a non-limiting example of this is described very briefly below.

FIG. 1 shows a schematic view of the driving system of the invention.

FIG. 2 shows a view of the configurable positions by means of springs in the driving system of FIG. 1 where FIG. 2 (a) shows the position inside a drawer of the cover of the invention and FIG. 2 ( b) shows the position in contact with a surface of a window glass.

FIG. 3 shows the displacement of the cleaning element inside the drive system.

FIG. 4 shows the cleaning element of the invention.

FIG. 5 shows the hydraulic system of the invention.

FIG. 6 shows the operation of the drying system of the invention.

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FIG. 7 shows a view of the protective cover of the invention.

FIG. 8 shows the disposition of the drying system of the invention.

Detailed exposition of the embodiments of the invention

In the state of the art, a wide variety of windows are known according to their opening (sliding, practicable, swinging, pivoting, tilt-parallel, tilt-and-turn, fixed) in addition to the glazed facades, whether curtain wall or panel facade. Therefore, in the present invention the different configurations of a window have been taken into account so that the present invention can cover any type of window as well as it can be used in glazed facades.

Practical realization for sliding and tilt-parallel windows

In Figs. 1 to 7 shows the system object of the invention implemented in a sliding and tilt-parallel type window. More specifically, the system of the invention is composed of the following elements: a driving system (10), as shown in FIGS. 1, 2, 3, a cleaning element (20), as shown in FIG. 4, a hydraulic system (30), as shown in FIG. 5, a drying system (40), as shown in FIG. 6 and a protective cover (50), such and as shown in FIG. 7.

As shown in FIGS 1-2, the drive system (10) is formed by the following elements: two electric motors (11) that rotate the sinfm screws (12) that are configured to transform the rotational movement of the motors (12) in an upward or downward movement of the assembly formed by the cleaning (20) and drying elements (40); a rectangular bar (13) to stiffen the assembly and accommodate the bearings configured to allow the rotation of the screw screws (12) and the assembly formed by the cleaning element (20) and the drying system (40).

Thus, the drive system (10), when the electric motors (11) are operated, the sinfm screws (12) begin to rotate, which allows the assembly formed by the cleaning element (20) and the drying system (up and down) to be raised or lowered. 40) depending on the direction of rotation. The sinfm screws (12) are joined at the top by a bar (13) to give

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rigidity to the structure, which has two bearings installed to allow the rotation of the sinfm screws (12).

On the other hand, and due to the difference in dimensions (ie they are not level) between the glass surface of a window leaf and the inner surface of the roof drawer (50) a solution has been devised by means of springs (15 ) which allows to obtain the two necessary positions:

(i) that the cleaning element (20) is inside the drawer of the cover (50) so that the spring is compressed, as shown in FIG. 2 (a) and

(ii) that the cleaning element (20) is in contact with the glass surface whereby the springs (15) will be extended, as shown in FIG. 2 (b).

More specifically, the springs (15) are necessary as a suspension to allow total cleaning of the glass surface, as can be seen better in Figure 3. Thus, the problem solved by said springs (15) is that when the cleaning element (20) is rising, (and before a roller (21) that forms the cleaning element (20) finishes cleaning the entire surface of the glass, as will be explained later), the drying element (40 ) collides with the bottom of the bar (13) that joins the sinfm screws (12). This is due to the fact that the supports of the drying element (40) have had to be elevated (ie, raised) to be able to accommodate the cleaning element (20) when it is inside the drawer of the cover (50). Therefore, and thanks to the springs (15) when the drying element (40) comes into contact with the upper bar (13) of the structure, the springs (15) are compressed allowing to continue with the upward movement of the element of cleaning (20), solving the indicated technical problem.

The cleaning element (20) is shown in detail in Figure 4 and as indicated above, it is formed by a rotating brush (21) that is responsible for the cleaning action and through which a glass cleaner product will circulate towards the glass surface. The rotating brush (21) also includes a nozzle to allow the glass cleaner product to enter; a first

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internal cylinder to fix the cleaning element (20) to the structure of the drive system (10); a second internal and perforated cylinder to allow the product to pass from the nozzle towards the outside of the rotating roller (21); a plurality of bristles or the like that will form the structure of the rotating brush (21) to clean the surface of the glass; and a cylindrical joint to allow rotation of the rotating brush (21).

The hydraulic system (30) is shown in Figure 5. The hydraulic system (30) is composed of: a tank (31) for storing the glass cleaner product and / or water; a hydraulic pump to boost the flow of cleaning product; two hollow pieces (32) of cubic form to allow the flow of the flow to the nozzle of the cleaning element (20); a plurality of cylindrical ducts for connecting the system through which the glass cleaner flow circulates; and two gma channels (33) through which the water from the tank (31) circulates, from the upper end of the ducts to the hollow pieces (32) of cubic shape that rise and descend inside.

Thus, the operation of the hydraulic system (30) is as follows: once the tank (31) inside the drawer of the cover (50) of glass cleaner product has been filled, the device is started and the pump starts to boost product flow through the ducts. This ascends to the highest part of the duct to be poured into the hollow part (32) of a cubic shape that moves through the guide channels (33). Said hollow parts (32) are attached to the nozzle of the cleaning element (20), so it is responsible for providing a constant flow of glass cleaner product to the rotating brush (21) that forms the cleaning element (20).

The drying system (40), as shown in Figure 6, consists of:

a) a main part that is attached to the drive system (10) by means of the springs. This piece is responsible for housing inside the piece that holds the tires as well as where both the limiting parts and the spring assembly are installed;

b) six pieces for the suspension where the ends of the main piece are installed as well as the springs of the suspension;

c) three springs to allow a slight vertical movement (suspension) of the main part when touching the bottom of the stiffening bar of the drive system (10);

d) a piece where the tires are installed, together with the springs that the

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they expel and that has some grooves where the teeth of the limiting pieces fit when it is in a retracted position;

e) two glass cleaner gums to remove excess product from the glass surface;

f) eight springs to eject the piece that holds the tires;

g) six limiting pieces whose teeth allow the horizontal movement of the piece that holds the rubber when it is being retracted but that fit into the grooves of the piece at the end of said movement; Y

h) six springs for the limiting parts.

The drying system (40), as shown in Figure 6, becomes operational when the upward movement of the drive system (10) is to end. At the moment in which this element touches the lower part of the stiffening bar of the drive system (10), a chain movement occurs that follows this order (see figure 6):

i. The limiting parts compress the springs that keep them in their resting position, releasing the piece that holds the rubber bands (fig6a).

ii. The springs of the piece that holds the rubbers extend by expelling it until the rubber touches the surface of the glass (fig6b).

iii. The lateral ends of the piece that holds the rubber bands are introduced in the grooves present in the side bars of the roof that serve as gma during the downward movement (fig6c)

iv. When the entire surface of the glass has been dried, the piece that holds the tires begins to retract and compress the springs because an inclination in the grooves transforms the downward movement of the drive system into a horizontal movement of the piece that holds the tires until its retracted position (fig6d)

The protective cover (50) as shown in Figure 7 has the mission of protecting the system from corrosion caused by environmental dust and oxidation caused by rain or water used in the device itself. It has also been designed with the purpose of obtaining an aesthetic finish of the device so that

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this fits the window where it was to be installed. For this, said cover (50) consists of the following elements: an upper bar to protect the ball bearings at the upper end of the screw screws (12); a drawer at the bottom to store the cleaning element assembly (20) and the drying system (40) when it is not in operation. Said set enters and leaves the drawer thanks to a flip top. In addition, the electric motors are installed inside as well as the sealed tank (31) of the hydraulic system (30); and two side bars, one on each side, to protect the sinfm screws (12) and to serve as a gma channel to the part where the tires are installed.

Realization for practicable, swinging, pivoting, tilt-and-turn and fixed windows.

The design made for the case of practicable, swinging, pivoting, tilt-and-turn fixed windows, resembles the aforementioned case for sliding and tilt-parallel windows, although some modifications have been made regarding the drive system (10) and in the drying system (40).

Unlike in the case of sliding and tilt-parallel windows in which the leaves move horizontally over each other, in the types of windows of this configuration there is no difference in dimensions (ie they are level) between the surface of the leaf glasses. This reason makes it unnecessary to introduce the system of springs present in the previous provision that allowed to achieve the two necessary positions of the drying system (40). Therefore, the drying system (40) will remain in an aligned position as shown in Figure 8.

The above modification allows the suspension system to be removed as a suspension present in the drying system (40) of the previous practical embodiment. That is, only the springs that contribute to the suspension of the drying system (40) are eliminated but not the springs that have another function. This is because the drying system (40) is kept in a fixed position so it is not necessary to raise the level of the drying system supports (40) since they will not collide with the bottom of the bar (13 ) that joins the sinfm screws (12). For this reason, the components that make up the drying system (40) in this second embodiment are: a main body that is attached to the drive system (10) and inside which the part that holds the tires is housed as well as where they are installed both the limiting parts and the set of

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springs that eject the gums; a piece where the tires are installed, together with the springs that eject it; some grooves where the teeth of the limiter pieces fit when in the retracted position; two glass cleaner gums to remove excess product from the glass surface; eight springs to eject the piece that holds the rubber bands; six limiting pieces whose teeth allow horizontal movement of the piece that holds the rubber when it is being retracted but that fit into the grooves of the piece at the end of said movement; and six springs for the limiting parts. Therefore, with respect to the previous embodiment, only the three springs have been removed to allow the suspension of the drying system (40).

Realization for glazed facades

The configuration designed for the case of glazed facades is composed of the elements that are detailed below. In this configuration, the drive system (10) is installed inversely to the two configurations described above, that is, the electric motors in the upper part and the bearings in the lower part of said system. This is because in this case the drawer of the cover that protects the assembly formed by the cleaning element and the drying system is located at the top of the facade.

The quantity of components that make up this system is determined by the following conditions:

- Number of motors, sinfm screws or bearings per facade = number of columns of windows + 1;

- Number of rectangular bars or set (cleaning element (20) and drying system (40)) per facade = number of glass columns.

Therefore, the drive system (10) in this third practical embodiment consists of: electric motors that rotate the sinfm screws; a rectangular bars to stiffen the assembly and accommodate the bearings; an assembly formed by the cleaning element and the drying system; ball bearings to allow rotation of the sinfm screws; Sinfm screws to transform the rotating movement of the motors into an upward or downward movement of the assembly formed by the cleaning (20) and drying (40) elements.

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The cleaning element (20) in the three configurations is similar, the only difference in this embodiment for facades is the presence of two nozzles, one at each end, which are connected to the ducts, where the glass cleaner product circulates, through holes on the sides. The components that form it are the following: two nozzles to allow the glass cleaner product to enter; a rotating brush to clean the glass surface; an inner cylinder to fix the cleaning element to the structure of the drive system; and a perforated outer cylinder to allow the product to pass from the nozzle to the brush.

In this embodiment the hydraulic system (30) comprises the installation of a tank on the roof of the building where the device is to be installed. This makes it possible to eliminate the pump that drives the glass cleaner product from the tank to the cleaning element, since the flow will circulate by gravity through a series of ducts and gma channels to the hollow cubic shaped parts that are connected to the nozzles of the cleaning element .

The amount of gma channels or hollow cubic shaped pieces that make up the system is equal to the amount of glass columns + 1. Therefore, the hydraulic system (30) is composed of: a tank for storing the glass cleaner product; a plurality of hollow cubic shaped pieces to allow the flow of the flow to the nozzle; a series of conduits to connect the system through which the glass cleaner flow circulates; gma channels through which water flows from the ducts to the hollow cubic deformation pieces that rise and fall inside.

The drying system (40) is the same as that used in the second configuration or embodiment (for fixed windows) discussed above but is now installed in the lower part of the assembly formed by the cleaning element and the drying system itself. Therefore, the system comes into operation when the downward movement of the drive system (10) will end. For this reason, the components that make up the drying system are: the main body that is attached to the drive system (10) and inside which the piece that holds the rubber is housed as well as where both the limiting parts and the assembly are installed of springs; four springs to eject the piece that holds the rubber bands; a piece where

installed the rubber, together with the springs that eject it; some grooves where the teeth of the limiter pieces fit when in the retracted position; four limiting pieces whose teeth allow the horizontal movement of the piece that holds the rubber when it is being retracted but that fit into the grooves of the piece at the end of said movement; a glass cleaner rubber to remove excess product from the glass surface; Four springs for the limiting parts.

The cover design (50) is different from the other configurations although it has the same functionality. The difference is that the aesthetic finish 10 is given greater importance since the installed device will have a great visual impact on the glazed facade. The quantity of components that form the cover is determined by:

- Number of front bars per facade = number of glass columns

15 + 1;

- Number of drawers or lower bars per facade = number of columns of windows

Said cover (50) consists of the following elements: drawers in the upper part 20 for storing the assembly of the cleaning element and the drying system when it is not in operation; a flip cover to allow the entry and exit of the assembly as well as supports where the electric motors are installed; a lower bar to protect the ball bearings at the lower end of the sinfm screws; and a plurality of front bars to protect the sinfm screws and to serve as a guide channel to the part where the tires are installed.

Claims (2)

5 10 fifteen twenty 25 30 35 1 - Automatic system for cleaning windows and glazed facades comprising a driving system (10), a cleaning element (20), a hydraulic system (30), a drying system (40) and a protective cover (50 ) and which is characterized in that the drive system (10) comprises electric motors (11), which rotate sinfm screws (12) causing the rise of a set formed by the cleaning (20) and drying elements (40) ; and where during the ascent movement a rotating brush (21) together with a glass cleaner product performs the cleaning action of the entire surface of the glass; and where once the upper limit of the window being cleaned has been reached, a rubber element of the drying system (40) is extended and the direction of rotation of the electric motors (11) is reversed. 2 - The system of claim 1 wherein the sinfm screws (12) are joined at the top by an upper bar (13) to give rigidity to the structure, which has two bearings installed to allow the rotation of the sinfm screws ( 12). 3 - The system according to any of claims 1-2 wherein the drive system (10) comprises a plurality of springs (15) as a suspension to allow the total cleaning of the surface of a window glass in such a way that when the drying element (40) comes into contact with the upper bar (13) of the drive system (10) the springs (15) are compressed allowing the upward movement of the cleaning element (20) to continue. 4 - The system according to any one of claims 1-3 wherein the cleaning element (20) comprises a rotating brush (21) through which a glass cleaner product will circulate towards the surface of the window glass; and where the rotating brush (21) is formed by: a nozzle to allow the glass cleaner product to enter; a first cylinder to fix the cleaning element to the structure of the drive system; a second perforated cylinder to allow the product to pass from the nozzle to the roller; a plurality of bristles or the like that will form the structure of the rotating brush to clean the surface of the glass; and a cylindrical joint to allow the rotation of the brush (21). 5 10 fifteen twenty 25 30 5 - The system according to any of claims 1-4 wherein the drying system (40) comes into operation when the upward movement of the drive system (10) ends and comprises a rubber element and a part that is attached to the system drive (10) by means of springs configured as suspension elements. 6 - The system according to any one of claims 1 to 5 wherein the protective cover (50) comprises an upper bar to protect the ball bearings at the upper end of the sinfm screws (12); and a drawer in the lower part provided with a hinged lid configured to store the assembly of the cleaning element (20) and the drying system (40) when it is not in operation; and where the electric motors (11) are installed inside the protective cover (50) as well as the sealed tank (31) of the hydraulic system (30); and two side bars, one on each side, to protect the sinfm screws (12) and to serve as a gma channel to the part where the tires are installed. 7. Method for the automatic cleaning of glass in windows and glass facades, implemented in a system according to any of claims 1-6 comprising the steps of: (a) operating the system by operating electric motors which they rotate sinfm screws producing the ascent of the assembly formed by the cleaning and drying elements; (b) and where at the moment in which the assembly begins to rise, a rotating brush together with a glass cleaner product performs the cleaning action of the entire surface of the glass; (c) and where once the upper limit of the window being cleaned has been reached, the excess cleaning product is removed from the glass surface to obtain a suitable finish by extending a rubber element of the drying system (40) and the direction of rotation of the motors is reversed.