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WO2018141375A1 - Dispositif de nettoyage pour nettoyer des surfaces orientées verticalement de grandes hauteurs - Google Patents

Dispositif de nettoyage pour nettoyer des surfaces orientées verticalement de grandes hauteurs Download PDF

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Publication number
WO2018141375A1
WO2018141375A1 PCT/EP2017/052119 EP2017052119W WO2018141375A1 WO 2018141375 A1 WO2018141375 A1 WO 2018141375A1 EP 2017052119 W EP2017052119 W EP 2017052119W WO 2018141375 A1 WO2018141375 A1 WO 2018141375A1
Authority
WO
WIPO (PCT)
Prior art keywords
cleaning device
unit
cleaning
suspension
cleaned
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2017/052119
Other languages
English (en)
Inventor
Erwin Geissler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Husseini Hazem A
Eichert Jochen
Original Assignee
Husseini Hazem A
Eichert Jochen
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Husseini Hazem A, Eichert Jochen filed Critical Husseini Hazem A
Priority to PCT/EP2017/052119 priority Critical patent/WO2018141375A1/fr
Publication of WO2018141375A1 publication Critical patent/WO2018141375A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/002—Arrangements for cleaning building facades
    • E04G23/004—Arrangements for cleaning building facades with arrangements for collecting waste water or cleaning products
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L1/00—Cleaning windows
    • A47L1/02—Power-driven machines or devices
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/38—Machines, specially adapted for cleaning walls, ceilings, roofs, or the like

Definitions

  • the present invention relates to a cleaning device for clean- ing vertically oriented surfaces of large heights like build ⁇ ing fronts or hull planking.
  • the term "ver ⁇ tically oriented” is not to be construed in a way that the surface has to be oriented exactly vertically but can deviate from the vertical as is often the case in hulls but also in skyscrapers having inclined fronts.
  • a carrier frame is used that is sus ⁇ pended on a holding unit located on the roof of the building or the deck of the ship above the carrier frame by means of a suspension cable.
  • the carrier frame can be lifted or lowered so that a person standing on the carrier frame can wash the windows and exterior surfaces of the building or the ship by hand.
  • the carrier frame is repositioned laterally so that the next adjacent vertical section of the building or hull may be cleaned. This procedure may be repeated until the entire building front or hull planking has been washed.
  • Manually cleaning of vertically oriented surfaces using carri ⁇ er frames is extremely time consuming and can be dangerous, in particular with respect to tall skyscrapers. Typical wind and air drafts surrounding a building can exert a significant aer- odynamic force upon the carrier frame and the person, causing them to swing out and away from the building, and placing per ⁇ sons standing on that carrier frame in peril.
  • a carrier frame is suspended on a holding unit by means of a suspension cable.
  • the suspension cable can be tightened or loosened by means of a winch that is located on the carrier frame and/or on the holding unit.
  • the winch is in many cases located on the holding unit.
  • a cleaning unit is mounted on the carrier frame that typically comprises a number of application nozzles for applying a liq ⁇ uid on the surface to be cleaned and one or more rotating brushes to clean the surface supported by the chemical and physical cleaning effect of the liquid applied.
  • the cleaning effect is strongly dependent on the force the brushes are applied to the surface to be cleaned.
  • the carrier frame is only suspended on the suspension cable. There is thus no force acting into the direction of the sur ⁇ face to be cleaned.
  • the US 2003/0106176 Al addresses this problem and proposes the use of a number of fans that are oriented to generate a nega- tive wind pressure that sucks the carrier frame towards the surface to be cleaned.
  • the force acting between the brushes and the surface to be cleaned is thereby increased and the cleaning effect improved.
  • the use of fans requires driving means that are heavy and thus reduce the maneuverabil ⁇ ity of the cleaning device.
  • an energy source is needed for driving the fans which also adds to the weight of the cleaning device and/or requires additional supply lines further limiting the maneuverability.
  • the WO 2009/011821 A9 discloses a cleaning device having a rod running fixed to the carrier frame perpendicular to the sur ⁇ face to be cleaned.
  • the suspension cable is connected on the rod and thus the fixing point of the suspension cable is lo ⁇ cated at a distance from the surface to be cleaned and the carrier frame.
  • This arrangement causes the suspension cable to be deflected out of the vertical.
  • a force acting perpendicular and facing to the surface to be cleaned is gen- erated. This force also increases the force acting between the brushes and the surface to be cleaned thereby improving the cleaning effect.
  • the arrangement disclosed in WO 2009/011821 A9 impos- es a torque turning moment on the carrier frame.
  • the brushes are unevenly pressed against the surface to be cleaned.
  • the further the carrier frame is located away from the suspension unit the smaller the deflection angle and concomitantly the force pressing the brushes against the surface get.
  • the cleaning re ⁇ sult is therefore dependent on the distance between the carri ⁇ er frame and the suspension unit.
  • the torque turning moment may be so large that typically the lower brush loses contact with the surface to be cleaned which is not de ⁇ sirable.
  • the WO 2009/011821 A9 propos ⁇ es a counter weight fixed on the rod.
  • the counter weight increases the weight of the cleaning device and thus deteriorates the maneuverability. It may be sufficient to em ⁇ ploy only one brush.
  • the dependence of the cleaning result on the distance between the carrier frame and the sus ⁇ pension unit remains.
  • a cleaning device for cleaning vertical ⁇ ly oriented surfaces of large heights like building fronts or hull planking comprising a carrier frame, a suspension unit mounted on the carrier frame for suspending the cleaning de- vice on a holding unit by means of at least one suspension ca ⁇ ble, wherein the holding unit and/or the cleaning device com ⁇ prises a winch unit for tightening and loosening the suspen ⁇ sion cable, thereby moving the cleaning device vertically along a moving direction on the surface to be cleaned, a cleaning unit mounted on the carrier frame forming at least one contact area with the surface to be cleaned, wherein the suspension unit comprises at least two deflection rollers de ⁇ flecting the suspension cable, the deflection rollers being located spaced from each other in the moving direction of the cleaning device and spaced from the contact area in a distance in which they deflect the suspension cable out of the vertical when the cleaning device is suspended on the holding unit.
  • the two deflection rollers are located spaced in a distance from the contact area so that the suspen ⁇ sion cable is deflected out of the vertical a certain force is generated pressing the cleaning unit against the surface to be cleaned leading a satisfactory cleaning result.
  • the forces generated can be varied by the distance the deflection rollers are spaced apart from the contact area.
  • the fact that at least two deflecting rollers are employed reduces the torque turning forces acting on the carrier frame.
  • the location of the two deflecting rollers can be chosen so that almost no torque turning moments are introduced into the carrier frame. In any case the torque turning moments can be reduced to a degree that no counter weight is needed to eliminate the torque turn ⁇ ing moments.
  • the total weight of the cleaning device can be reduced, thereby improving the maneuverability.
  • the suspension unit is movably mounted on the carrier frame to change the distance of the deflection rollers at least to the contact area.
  • the suspension unit may be designed in a way that not only the distance of the deflection rollers to the contact area can be changed but also the distance between the two deflection roll- ers . However, the latter is only optional.
  • the deflection angle by which the suspen ⁇ sion cable is deflected from the vertical decreases with the distance of the cleaning device from the holding unit.
  • the de- flection angle also influences the forces acting in the con ⁇ tact area.
  • the suspension unit comprises a paral ⁇ lelogram guide for movably mounting the deflection rollers.
  • a parallelogram guide allows the synchronized movement of the two deflecting rollers. The movement of the two deflecting rollers is thus reproducible. Moreover, only one beam of the parallelogram guide has to be moved without separately and synchronously driving the other beam. The synchronous movement of the two deflection rollers is thus facilitated.
  • a further embodiment is characterized in that the parallelo ⁇ gram guide is embodied such that between the two deflection rollers the suspension cable runs parallel to the surface to be cleaned. The forces acting in the contact area are changed very evenly.
  • the parallelogram guide com- prises actuator means to change the distance between the two deflection rollers.
  • the deflection angle of the suspension cable is relatively large which is the case when the cleaning device is located close to the holding unit the forces acting on the carrier frame increase.
  • the increase in the forces acting on the carrier frame can be distributed within the carrier frame so that even at high deflection an ⁇ gles the forces acting inside the contact area are still equal or at least similar. Tilting of the carrier frame is prevent- ed .
  • the cleaning unit comprises a liquid recycling system for applying liquid to the surface to be cleaned and to collect the applied liquid for re-application.
  • a liquid recycling system for applying liquid to the surface to be cleaned and to collect the applied liquid for re-application.
  • the liquid is not collected after application within the cleaning device.
  • the applied liquid uncontrollably flows down the vertically ori ⁇ ented surface so their collection at the bottom of the surface is fairly difficult.
  • the liquid is just directed to the sewerage and thus lost for the cleaning so that the consumption of liquid is fairly high.
  • the liquid applied contains substances that are harmful to the environ ⁇ ment and must not be directed to the sewerage without treat- ment . In this case the applied liquid has to be collected which causes a fairly high effort.
  • the recycling system comprises a purifi ⁇ cation unit for purifying the collected liquid.
  • the applied liquid receives the dirt removed from the surface to be cleaned.
  • the pu- rification unit removes the dirt from the collected liquid so that the cleaning effect does not suffer.
  • a further embodiment is designed such that the purification unit comprises at least one coarse filter, least one fine fil- ter and/or least one sand filter. It has been found that the collected liquid mostly comprises dirt which can be removed fairly easily. Coarse filters, fine filters and sand filters offer a sufficient purification in a cheap and easy way with ⁇ out increasing the weight of the cleaning device too much. If necessary additional purification means like ion exchange col ⁇ umns or membrane filters may be included.
  • the purification unit comprising ⁇ es a dosing device for adding agents to the liquid.
  • the liquid commonly used for cleaning is water.
  • the cleaning ef ⁇ fect of water is limited due to its high surface tension.
  • surfactants may be added by means of the dosing device.
  • floccula- tion agents may be added to improve the filtering.
  • the recycling sys- tern further comprises a first chamber and a second chamber, the first chamber being located above the second chamber, when the device is suspended on the holding device, the purifica ⁇ tion unit being located between the first and the second cham ⁇ ber.
  • the use of filters, columns and membranes for purifying the collected liquid causes a pressure loss which has to be compensated by pumps.
  • the pump only needs to pump the collected water to the first cham ⁇ ber.
  • the gravity force is then supporting the flow through the purification unit so that energy in the operation of the pumps can be saved leading to an economical operation of the clean ⁇ ing device.
  • a cleaning de ⁇ vice for cleaning vertically oriented surfaces of large heights like building fronts or hull planking, comprising a carrier frame, a suspension unit mounted on the carrier frame for suspending the cleaning device on a holding unit by means of at least one suspension cable, wherein the holding unit and/or the cleaning device comprises a winch unit for tighten- ing and loosening the suspension cable, thereby moving the cleaning device vertically along a moving direction on the surface to be cleaned, a cleaning unit mounted on the carrier frame forming at least one contact area with the surface to be cleaned, the two contact areas being spaced from each other in the moving direction of the cleaning device, wherein the sus ⁇ pension unit comprises a liquid recycling system for applying liquid to the surface to be cleaned and to collect the applied liquid for re-application.
  • the liquid is not collected after application within the cleaning device.
  • the applied liquid uncontrollably flows down the vertically ori ⁇ ented surface so their collection at the bottom of the surface is fairly difficult.
  • the liquid is just directed to the sewerage and thus lost for the cleaning.
  • the liquid applied contains substances that are harmful to the environment and must not be directed to the sewerage without treatment.
  • the applied liquid has to be collected which causes a fairly high effort.
  • the application of the liquid is done in a way that the collection is facilitated.
  • the purification unit comprises at least one coarse filter, least one fine filter and/or least one sand filter. It has been found that the collected liquid mostly comprises dirt which can be removed fairly easily.
  • Coarse filters, fine filters and sand filters offer a suffi ⁇ cient purification in a cheap and easy way without increasing the weight of the cleaning device too much. If necessary addi ⁇ tional purification means like ion exchange columns or mem ⁇ brane filters may be included.
  • the purification unit comprises a dosing device for adding agents to the liquid.
  • the liquid commonly used for cleaning is water. However, the cleaning effect of water is limited due to its high surface tension. To reduce the surface tension surfactants may be added by means of the dosing de ⁇ vice .
  • the recycling system further comprises a first chamber and a second chamber, the first chamber being located above the second chamber, when the device is suspended on the holding device, the purification unit being located between the first and the second chamber.
  • the use of filters, columns and membranes for purifying the collected liquid causes a pressure loss which has to be compensated by pumps.
  • the pump only needs to pump the collected water to the first chamber. The gravity force is then supporting the flow through the pu ⁇ rification unit so that energy in the operation of the pumps can be saved leading to a more economical operation of the cleaning device.
  • the first chamber and/or the second chamber comprise an emergency discharge for discharging the liquid.
  • the liquid contained in the chambers may be discharged.
  • the stress on the suspension cable may be reduced by discharging the liq- uid.
  • the emergency discharge may be designed in a way that they open when the cleaning device is not aligned hori ⁇ zontally anymore. Alternatively the emergency discharge may always be open but positioned such that the liquid can only leave in case the cleaning device is not horizontally aligned anymore.
  • the fact that at least two deflecting rollers are employed reduces the torque turning forces acting on the carrier frame.
  • the lo ⁇ cation of the two deflecting rollers can be chosen so that al- most no torque turning moments are introduced into the carrier frame. In any case the torque turning moments can be reduced to a degree that no counter weight is needed to eliminate the torque turning moments. The total weight of the cleaning de ⁇ vice can be reduced, thereby improving the maneuverability.
  • a further implementation is characterized in that the suspen- sion unit is movably mounted on the carrier frame to change the distance of the deflection rollers at least to the contact area.
  • the suspension unit may be designed in a way that not only the distance of the deflection rollers to the contact area can be changed but also the distance be- tween the two deflection rollers. However, the latter is only optional. The bigger the distance of the deflection rollers the larger the forces acting in the contact area.
  • the deflec ⁇ tion angle by which the suspension cable is deflected from the vertical decreases with the distance of the cleaning device from the holding unit.
  • the deflection angle also influences the forces acting in the contact area.
  • the suspension unit comprises a parallelogram guide for mova ⁇ bly mounting the deflection rollers.
  • a parallelogram guide al- low the synchronized movement of the two deflecting rollers. The movement of the two deflecting rollers is thus reproduci ⁇ ble.
  • only one beam of the parallelogram guide has to be moved without separately and synchronously driving the oth ⁇ er beam. The synchronous movement of the two deflection roll- ers is thus facilitated.
  • the parallelogram guide is embodied such that between the two deflection rollers the suspension cable runs parallel to the surface to be cleaned.
  • the forces acting in the two contact area are changed very evenly.
  • the parallelogram guide comprises actuator means to change the distance between the two deflec ⁇ tion rollers.
  • the deflection angle of the suspension cable is relatively big which is the case when the cleaning device is located close to the holding unit the forc- es acting on the carrier frame increase.
  • the dis ⁇ tance between the two deflection angles the increase in the forces acting on the carrier frame can be distributed within the carrier frame so that even at high deflection angles the forces acting inside the contact area are still equal or at least similar. Tilting of the carrier frame is prevented.
  • Another aspect of the invention is directed to a cleaning sys ⁇ tem for cleaning vertically oriented surfaces of large heights like building fronts or hull planking, comprising a cleaning device according to one of the preceding implementations, and a holding unit on which the cleaning device is suspended by means of at least one suspension cable, wherein the holding unit and/or the cleaning device comprises a winch unit for tightening and loosening the suspension cable, thereby moving the cleaning de-vice vertically along a moving direction on the surface to be cleaned.
  • Another aspect of the invention is directed to the use of a cleaning system and of a cleaning device according to one of the preceding implementations or embodiments for cleaning ver ⁇ tically oriented surfaces of large heights of building fronts or hull planking.
  • the cleaning system is easy to maneuver as the weight of the cleaning device almost stays constant and the forces acting on the cleaning device can be regulated so that an equal and sufficiently high force is acting in the contact ar ⁇ ea.
  • the cleaning effect does not depend on the position of the cleaning device on the surface to be cleaned.
  • the cleaning system allows the collection and purification of the applied liquid. No polluted liquid is disposed and the amount of liquid needed for cleaning the surface is kept low.
  • Figure 1 is a schematic drawing a cleaning system known from the state of the art
  • Figure 2 is a schematic drawing of two embodiments of an in- ventive cleaning system
  • Figure 3 is a schematic drawing of the interior of one embodi ⁇ ment of the inventive cleaning system
  • Figure 4 is a schematic drawing of a purification unit.
  • the cleaning system 10P comprises a holding unit 12 that is placed on the roof of a building 14 or the deck of a hull.
  • the holding unit 12 comprises a main beam 16 carrying a winch unit 18 on one end and a holding unit deflec ⁇ tion roller 23 on the other end.
  • the winch unit 18 comprises a winch drum 20 on which a suspension cable 21 is rolled up.
  • the winch unit 18 comprises a drive unit 22 for tightening and loosening the suspension cable 21.
  • the holding unit 12 comprises two secondary beams 24 that carry wheels 26 to move the holding unit 12.
  • a counter weight 28 is connected to one of the sec ⁇ ondary beams 24.
  • the holding unit 12 is placed on the deck or the roof so that it abuts against a parapet 30 to prevent the uncontrolled movement in operation. In case no parapet 30 is available the holding unit 12 may be secured by ropes on a post or the like.
  • the suspension cable 21 runs more or less parallel to the main beam 16 and thus parallel to the roof or deck.
  • the holding unit deflection roller 23 is deflecting the suspension cable 21.
  • the suspension cable 21 is connected to a cleaning device 32 that is movable in a moving direction M along a sur- face 34 to be cleaned which is more or less vertically orient ⁇ ed.
  • the cleaning device 32 is lifted or lowered by tightening or loosening the suspension cable 21.
  • a second suspension cable 21 may be employed. In case one of the suspension cables 21 breaks the cleaning device 32 can still be held by the other cable 21.
  • the holding unit 12 and the cleaning device 32 form the main components of the clean ⁇ ing system 10.
  • the surface 34 to be cleaned can be a building front or a hull planking including window panes.
  • the cleaning device 32 com ⁇ prises a carrier frame 36 on which a cleaning unit 38 is mounted.
  • the cleaning unit 38 comprises two brushes 40 that contact the surface 34 to be cleaned via two contact areas A.
  • the brushes 40 and thus the contact areas A are spaced from each other in the moving direction M of the cleaning device 32 with reference to the position of the cleaning device 12 in operation. However, it may be sufficient to employ only one brush 40 so that the surface 34 is cleaned only via one con ⁇ tact area A (embodiment not shown) .
  • the cleaning device 32 further comprises a suspension unit 42 having a rod 44 that is mounted perpendicular to the surface 34 to be cleaned. Moreover the suspension unit 42 comprises a deflection roller 46 mounted on the rod 44 at a distance D from the surface 34 and deflecting the suspension cable 21. The distance D between the deflecting roller 46 and the sur ⁇ face 34 to be cleaned is chosen so that the suspension cable 21 is not running parallel to the surface 34 but is deflected from the vertical by a deflection angle a . Due to the deflec ⁇ tion of the suspension cable 21 out of the vertical a force is generated that is directed to the surface 34 to be cleaned. This force presses the brushes 40 against the surface 34 and thus provides sufficient pressure in the contact areas A to remove dirt from the surface 34.
  • the winch unit 18 comprising the winch drum 20 and the drive unit 22 are located on the holding unit 12 the winch unit 18 may also be located on the carrier frame 36.
  • Such an embodiment may be advantageous in mobile cleaning devices that are employed in different applications in which a fast and easy set up and dismantling is of major priority.
  • the deflection of the suspension cable 21 not only generates a force acting perpendicular to the surface 34 to be cleaned but also forces acting parallel to the surface 34 and directed to the holding unit 12.
  • a torque turning moment is introduced into the carrier frame 36 that presses the upper brush 40 against the surface 34 and lifts the lower brush 40 away from the surface 34. This torque turning moment depends on the deflection angle a of the suspension cable 21.
  • the de- flection angle a changes with the position of the cleaning de ⁇ vice 32 on the surface 34.
  • the cleaning device 32 is shown in two positions on the surface 34. In the first position the cleaning device 32 is located closer to the holding unit 12 than in the second position. The further the cleaning device 32 is positioned away from the holding unit 12 the smaller the deflection angle a (compare CCl and CC2) . The smaller the de ⁇ flection angle a the smaller the torque turning moment.
  • a counter weight 48 is mounted on the rod 44.
  • the counter weight 48 adds to the total weight of the cleaning device 32 it may overcompensate the torque turn ⁇ ing moment at small deflection angles a so that the upper brush 40 may lose contact to the surface 34.
  • FIG 2 two embodiments of an inventive cleaning system 10 are shown.
  • the holding unit 12 equals the one described in Figure 1.
  • the embodiments mainly differ in the design of the cleaning devices 32.
  • the first embodiment of the cleaning device 32i is located above the second embodiment 322 on the surface 34 to be cleaned.
  • the basic design of the inventive cleaning devices 32 is also the same as of the one disclosed in Figure 1.
  • the main differ ⁇ ence is that the suspension unit 42 comprises at least two de ⁇ flection rollers 46i, 462.
  • the suspension unit 42 of the first embodiment comprises two deflection rollers 46i, 4 62 whereas the second embodiment comprises three deflection rollers 46i to 4 63 .
  • All of the deflection rollers 46 are mounted on a paral ⁇ lelogram guide 50.
  • the parallelogram guide 50 comprises two primary beams 52i, 522 that are rotatably mounted on the carri ⁇ er frame 36.
  • the two primary beams 52 are connected to each other by a connection beam 54 that is rotatably fixed to the two primary beams 52.
  • the deflection rollers 46 are connected to the primary beams 52 in the area of their free ends.
  • the two pri ⁇ mary beams 52 are identical in their length and the fixing po ⁇ sition of the deflection roller.
  • the connection beam 54 is connected to the two primary beams 52 in such a way that inde- pendent of the rotational position of the parallelogram guide 50 the position of the two deflection rollers 46i, 4 62 relative to each other stays constant.
  • the two primary beams 52i, 522 are oriented parallel to each other.
  • the suspension cable 21 is deflected by the two deflection rollers 46i, 4 62 so that it runs parallel or almost parallel to the surface 34 to be cleaned between the two deflection roll ⁇ ers 46i, 4 62 .
  • the suspension cable 21 will al ⁇ ways run parallel or almost parallel to the surface 34 between the two deflection rollers 46i, 4 62 .
  • the cleaning device 32 comprises a driving unit 56 for moving the parallelogram guide 50.
  • the driving unit 56 is interacting with the upper primary beam 52i.
  • the second primary beam 522 will follow due to the connection by the connection beam 54.
  • the movement of the parallelogram guide 50 leads to a change of the deflec ⁇ tion angle a of the suspension cable 21 between the holding unit deflection roller 23 and the deflection roller 46i facing to the holding unit 12.
  • the driving unit 56 also serves for fixing the parallelogram guide 50 in a given position.
  • the paral ⁇ lelogram guide 50 comprises an actuator means 58 interacting with the connection beam 54.
  • the actuator means 58 allows the length of the connection beam 54 to be changed.
  • the primary beams 52 of the parallelogram guide 50 are always oriented parallel to each other.
  • the length of the connection beam 54 can be changed, the two primary beams 52 change may change their orientation relative to each other.
  • the deflection cable 21 may run parallel to the surface 34 to be cleaned between the two deflection rollers 46 but may also be inclined to the surface 34 with an angle that can be chosen by the length of the connection beam 54.
  • the connection beam 54 may have two parts that are movable to each other along the longitudinal axis of the connection beam 54.
  • a spindle drive may be employed (not shown) .
  • the first primary beam 52i of the second embodiment of the cleaning device 322 carries a third deflec ⁇ tion roller 463.
  • the suspension cable 21 is thus always guided between the deflection rollers 46i and 463 of the first primary beam 52i independent of the orientation of the parallelogram guide 50.
  • FIG. 3 shows a schematic drawing of the interior of one em ⁇ bodiment of the inventive cleaning device 32.
  • the cleaning de ⁇ vice 32 comprises a liquid recycling system 60 having a first chamber 62 and a second chamber 64, the first chamber 62 being located above the second chamber 64 when the cleaning system 10 is in operation.
  • the two chambers 62, 64 may be filled with a cleaning liquid, typically water.
  • the two chambers 62, 64 are connected to each other by means of a first pipe 66.
  • a pu- rification unit 68 is located between the two chambers 62, 64 so that the liquid driven by gravity g flowing from the first chamber 62 to the second chamber 64 via the first pipe 66 has to pass the purification unit 68.
  • the recycling system 60 comprises a first pump 70 that pumps the liquid out of the second chamber 64 through a second pipe 72 to two application nozzles 74.
  • the application nozzles 74 are located adjacent to the brushes 40 so that the liquid is sprayed on the surface 34 near the contact areas A where the brushes 40 contact the surface 34.
  • the cleaning device 32 com ⁇ prises driving means (not shown) to rotate the brushes 40 so that the surface 34 is cleaned by the rotation of the brushes 40 supported by the applied liquid.
  • the recycling system 60 further comprises a collecting tray 76 that contacts the surface 34 to be cleaned via a flexible col ⁇ lecting lip 78. The collecting lip 78 and the collecting tray 76 are located below the second chamber 64.
  • the col- lecting lip 78 is located underneath the brushes 40 so that the liquid applied on the surface 34 flows down the surface 34 and is directed to the collecting tray 76 by the collecting lip 78. This liquid is polluted with the dirt removed from the surface 34.
  • the collecting tray 76 is in fluid communication with a third tube 80 leading to the first chamber 62.
  • the pol ⁇ luted liquid is pumped to the first chamber 62 by means of a second pump 82 interacting with the third tube 80.
  • the liquid stored in the first chamber 62 is flowing to the second chamber 64 driven by gravity g, thereby passing the purification unit 68 where the dirt is removed from the liquid.
  • the purified liquid is then applied again to the sur ⁇ face 34 and undergoes the described process again.
  • the first chamber 62 and the second chamber 64 are provided with emergency discharges 81.
  • the emergency discharges 81 comprise holes that are located on the upper end of the first and second chambers 62, 64 above the liquid level and are always open.
  • the emergency discharges 81 may be located below the liquid level and be closed by valves that open when the cleaning device 32 exceeds a certain tilting angle.
  • the cleaning device 32 is ex ⁇ ceptionally tilted 21 e.g. due to strong winds or due to breakage of one of the suspension cables 21 the liquid is ex- iting the chambers 62, 64 through the emergency discharges 81.
  • the weight of the cleaning device 32 and the dan ⁇ ger of a crash are reduced.
  • the parallelogram guide 50 deflects the suspension cable 21 out of the vertical thereby imposing a load on the brushes 40.
  • a number of distance roll ⁇ ers 83 may be employed.
  • the distance rollers 83 are located concentrically to the brushes 40, however, they may also be located at a distance from the brushes 40. Depend ⁇ ing on the forces acting on the brushes 40 and the type of brushes employed (harder or softer brushes) the distance roll- ers 83 contact the surface 34.
  • the distance rollers 83 may be stiff or slightly resilient so that they do not damage the surface 34.
  • the purification unit 68 is separately shown at an enlarged scale.
  • the purification unit 68 comprises a coarse filter 84, a fine filter 86 and a sand fil ⁇ ter 88.
  • Other units may be added, e.g. an ion exchange column.
  • the purification unit 68 comprises a dosing device 90 permitting the addition of agents like surfactants to the liquid to improve the cleaning strength.
  • the dosing device 90 is located downstream of the sand filter 88.
  • the dosing device 90 may also be located upstream of the coarse filter 84 or at other locations within the puri- fication unit 68. This arrangement may be beneficial in case flocculating agents are added so that the dirt can better be disposed in the filters 84, 86, 88.
  • the dosing device 90 may also be located outside the purification unit 68, e.g. next to the application nozzles 74. More than one dosing device 90 may be provided to enhance the cleaning strength and to improve the purification. Reference list

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning In General (AREA)

Abstract

La présente invention concerne un dispositif de nettoyage pour nettoyer des surfaces orientées verticalement (34) de grandes hauteurs telles que des façades de bâtiments ou un bordage de coque, comprenant un cadre de support (36), une unité de suspension (42) montée sur le cadre de support (36) pour suspendre le dispositif de nettoyage (32) sur une unité de maintien (12) au moyen d'au moins un câble de suspension (21), l'unité de maintien (12) et/ou le dispositif de nettoyage (32) comprenant une unité de treuil (18) pour serrer et desserrer le câble de suspension (21), déplaçant ainsi le dispositif de nettoyage (32) verticalement le long d'une direction de déplacement (M) sur la surface (34) à nettoyer, une unité de nettoyage (38) montée sur le cadre de support (36) formant au moins une zone de contact (A) avec la surface (34) à nettoyer, l'unité de suspension (42) comprenant au moins deux rouleaux de déviation (46) déviant le câble de suspension (21), les rouleaux de déviation (46) étant espacés l'un de l'autre dans la direction de déplacement (M) du dispositif de nettoyage (32) et espacés de la zone de contact (A) dans une distance (D) dans laquelle ils dévient le câble de suspension (21) hors de la verticale lorsque le dispositif de nettoyage (34) est suspendu sur l'unité de maintien (12). En outre, la présente invention concerne un système de nettoyage (10) comprenant l'unité de maintien (12) et le dispositif de nettoyage (32).
PCT/EP2017/052119 2017-02-01 2017-02-01 Dispositif de nettoyage pour nettoyer des surfaces orientées verticalement de grandes hauteurs Ceased WO2018141375A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109533224A (zh) * 2019-01-17 2019-03-29 无锡市东舟船舶设备股份有限公司 船用自动洗窗装置
CN110565973A (zh) * 2019-10-17 2019-12-13 郭帅 一种建筑幕墙清洁装置
CN111449562A (zh) * 2020-04-09 2020-07-28 杭州杭优幕墙材料有限公司 一种幕墙清洗装置

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CH677198A5 (en) * 1989-12-13 1991-04-30 Luciano Bezzola Permanently mounted facade cleaning apparatus - has jib on roof for cabin cleaning suspension and guiding cables, also frames with suction cups
FR2654652A1 (fr) * 1989-11-21 1991-05-24 Nicolaieff Michel Installation de nettoyage automatique de parois lisses et notamment vitrees d'immeubles.
WO1998001260A1 (fr) * 1996-07-05 1998-01-15 E.B.E. Nederland B.V. Dispositif de decapage dote de moyens de pression et procede d'utilisation associe
US20030106176A1 (en) 2001-12-10 2003-06-12 Jyh-Sheng Wang Automatic washing system and apparatus for tall building
US20060096050A1 (en) * 2004-11-05 2006-05-11 Sky Robotics, Inc. Automated cleaning system for structures
EP2009201A1 (fr) * 2007-06-29 2008-12-31 AB Grundstenen 115144 Système et procédé de lavage
WO2009011821A9 (fr) 2007-07-13 2010-03-04 Ipc Eagle Corporation Système de nettoyage de surface verticale stabilisé
WO2011117348A2 (fr) * 2010-03-24 2011-09-29 Brunkeberg Industriutveckling Ab Appareil et procédé de nettoyage de façades sur bâtiments à plusieurs étages
US20120246847A1 (en) * 2011-04-04 2012-10-04 Alshehhi Ahmed Ali Ibrahim Machine to clean facade of building

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2654652A1 (fr) * 1989-11-21 1991-05-24 Nicolaieff Michel Installation de nettoyage automatique de parois lisses et notamment vitrees d'immeubles.
CH677198A5 (en) * 1989-12-13 1991-04-30 Luciano Bezzola Permanently mounted facade cleaning apparatus - has jib on roof for cabin cleaning suspension and guiding cables, also frames with suction cups
WO1998001260A1 (fr) * 1996-07-05 1998-01-15 E.B.E. Nederland B.V. Dispositif de decapage dote de moyens de pression et procede d'utilisation associe
US20030106176A1 (en) 2001-12-10 2003-06-12 Jyh-Sheng Wang Automatic washing system and apparatus for tall building
US20060096050A1 (en) * 2004-11-05 2006-05-11 Sky Robotics, Inc. Automated cleaning system for structures
EP2009201A1 (fr) * 2007-06-29 2008-12-31 AB Grundstenen 115144 Système et procédé de lavage
WO2009011821A9 (fr) 2007-07-13 2010-03-04 Ipc Eagle Corporation Système de nettoyage de surface verticale stabilisé
WO2011117348A2 (fr) * 2010-03-24 2011-09-29 Brunkeberg Industriutveckling Ab Appareil et procédé de nettoyage de façades sur bâtiments à plusieurs étages
US20120246847A1 (en) * 2011-04-04 2012-10-04 Alshehhi Ahmed Ali Ibrahim Machine to clean facade of building

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109533224A (zh) * 2019-01-17 2019-03-29 无锡市东舟船舶设备股份有限公司 船用自动洗窗装置
CN110565973A (zh) * 2019-10-17 2019-12-13 郭帅 一种建筑幕墙清洁装置
CN111449562A (zh) * 2020-04-09 2020-07-28 杭州杭优幕墙材料有限公司 一种幕墙清洗装置
CN111449562B (zh) * 2020-04-09 2021-12-03 杭州璟仪科技有限公司 一种幕墙清洗装置

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