EP3206549B1 - Flächen-reinigungsmaschine mit befeuchtungseinrichtung - Google Patents

Flächen-reinigungsmaschine mit befeuchtungseinrichtung Download PDF

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Publication number
EP3206549B1
EP3206549B1 EP15775242.9A EP15775242A EP3206549B1 EP 3206549 B1 EP3206549 B1 EP 3206549B1 EP 15775242 A EP15775242 A EP 15775242A EP 3206549 B1 EP3206549 B1 EP 3206549B1
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EP
European Patent Office
Prior art keywords
cleaning
pressure
cleaning roller
cleaning machine
controlled switch
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.)
Active
Application number
EP15775242.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3206549A1 (de
Inventor
Fabian MOSER
Manuel SCHULZE
Christoph RUFENACH
Johanna BUCHMANN
Andreas MÜLLER
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.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
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Filing date
Publication date
Application filed by Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Priority to PL15775242T priority Critical patent/PL3206549T3/pl
Publication of EP3206549A1 publication Critical patent/EP3206549A1/de
Application granted granted Critical
Publication of EP3206549B1 publication Critical patent/EP3206549B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/28—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle
    • A47L5/30—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle with driven dust-loosening tools, e.g. rotating brushes
    • 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
    • A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
    • A47L11/30—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction
    • A47L11/302—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction having rotary tools
    • 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
    • A47L11/02—Floor surfacing or polishing machines
    • A47L11/20—Floor surfacing or polishing machines combined with vacuum cleaning devices
    • A47L11/202—Floor surfacing or polishing machines combined with vacuum cleaning devices having separate drive for the cleaning brushes
    • 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
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4002—Installations of electric equipment
    • A47L11/4008—Arrangements of switches, indicators or the like
    • 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
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4013—Contaminants collecting devices, i.e. hoppers, tanks or the like
    • A47L11/4016—Contaminants collecting devices, i.e. hoppers, tanks or the like specially adapted for collecting fluids
    • 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
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4027—Filtering or separating contaminants or debris
    • 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
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4041—Roll shaped surface treating tools
    • 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
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4044—Vacuuming or pick-up tools; Squeegees
    • 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
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4063—Driving means; Transmission means therefor
    • A47L11/4069—Driving or transmission means for the cleaning tools
    • 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
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/408—Means for supplying cleaning or surface treating agents
    • 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
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/408—Means for supplying cleaning or surface treating agents
    • A47L11/4083—Liquid supply reservoirs; Preparation of the agents, e.g. mixing 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
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0461—Dust-loosening tools, e.g. agitators, brushes
    • A47L9/0466—Rotating tools
    • A47L9/0477—Rolls
    • 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
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/408—Means for supplying cleaning or surface treating agents
    • A47L11/4088—Supply pumps; Spraying devices; Supply conduits

Definitions

  • the invention relates to a surface cleaning machine, such as in the GB2411823 described, comprising at least one cleaning roller, a drive device for rotationally driving the at least one cleaning roller, a moistening device for applying cleaning fluid to the at least one cleaning roller, and a suction unit device for generating a suction flow, which has at least one suction channel and at least one suction port that of the at least one Cleaning roller is assigned, is in fluid communication.
  • a cleaning device for cleaning a surface which comprises a rotatable brush.
  • a rubber wiper element is also provided, which is spaced apart from the brush and is fastened to an underside of a nozzle housing.
  • a cleaning device with a rotatable brush and a single rubber wiper element is also known.
  • a device for distributing fluid on a brush is known.
  • a device for cleaning and / or caring for textile floor coverings such as carpets with the application of liquid cleaning or care agents is known, with a treatment head that can be moved back and forth over the surface to be treated.
  • Means for applying and possibly distributing the liquid as well as any mechanically acting cleaning organs are arranged in the treatment head in the area of influence of a suction air flow which sucks the applied liquid from the material to be treated again after the cleaning function has ended.
  • the invention is based on the object of providing a surface cleaning machine of the type mentioned at the beginning, which has optimized operating properties.
  • the moistening device comprises at least one pressure-controlled switch which, in an open position, releases a fluid path for cleaning fluid to the at least one cleaning roller and in a closed position blocks the fluid path, and in that the at least one pressure-controlled switch is coupled to the at least one suction channel in a pressure-effective manner, with the at least one pressure-controlled switch moving into the open position and / or holding the open position when a vacuum is applied to the at least one suction channel by a suction flow.
  • the application of fluid to the at least one cleaning roller is coupled to a suction operation. Whether or not the at least one cleaning roller can be acted upon with cleaning fluid depends on a suction operation of the suction unit device.
  • the surface cleaning machine is usually operated in a cleaning operation in such a way that suction takes place. This then means that, in principle, in this operating mode it is possible to apply cleaning fluid to the at least one cleaning roller.
  • one or more pressure-controlled switches can be provided.
  • At least one collecting space for cleaning fluid is provided, the fluid path controllable with respect to opening and closing by the at least one pressure-controlled switch being located between the at least one collecting space and the at least one cleaning roller.
  • Cleaning liquid can be coupled into the collecting space, in particular from a tank device for cleaning liquid. It can thereby be achieved that cleaning fluid is constantly present in the collecting space and can be fed to the at least one cleaning roller when the pressure-controlled switch is opened.
  • the collecting space can be formed, for example, by the interior of a (cleaning liquid) line which leads to the pressure-controlled switch, or it can be formed by a chamber on which the switch is arranged (and into which a line leads).
  • a tank device for cleaning liquid which is in fluid connection with the fluid path and in particular is in fluid connection with the at least one collecting space for cleaning liquid.
  • a (main) shut-off valve can be provided, through which the constant queuing can be switched. In this way, for example, a cleaning operation can be set without the application of cleaning fluid.
  • the tank device is in a normal operating mode of the surface cleaning machine based on the Direction of gravity positioned above the at least one cleaning roller. Cleaning liquid can then be conveyed from the tank device to the at least one cleaning roller in a pump-free manner, driven by gravity.
  • the normal operating mode is a mode in which the surface cleaning machine stands up over the at least one cleaning roller on the surface to be cleaned and an operator also stands up on the surface to be cleaned and refers to an upper end of the surface cleaning machine, which is facing away from the cleaning head is positioned in the direction of gravity above the cleaning head.
  • the at least one pressure-controlled switch has a first surface, which is in pressure-effective connection with the at least one suction channel, and a second surface, which is in pressure-effective connection with the outside space, with a pressure difference between the first surface and the second surface determines the position of the at least one pressure controlled switch. It can thereby be controlled solely via the pressure on the first surface whether the at least one pressure-controlled switch is open or closed.
  • a corresponding pressure-controlled switch can be designed in a simple manner.
  • the application of negative pressure to the at least one suction channel causes a pressure difference between the first surface and the second surface, which brings the at least one pressure-controlled switch into the open position and / or holds it in the open position.
  • the at least one pressure-controlled switch advantageously has a reset device which, when the pressure difference falls below a minimum threshold, effects a reset to the closed position and / or maintains the closed position. In this way, if the application of negative pressure to the first surface is omitted, a return with blocking of the fluid path can be achieved in an automated manner.
  • the resetting device can be formed by an elastic device which, for example, includes additional springs or the like.
  • the resetting device is formed by an inherent elasticity of the at least one pressure-controlled switch.
  • the at least one pressure-controlled switch has a movable membrane. Depending on the pressure difference acting, the membrane can move and cause a transition from the open to the closed position or vice versa.
  • the at least one pressure-controlled switch has at least one movable blocking element for the fluid path, which is arranged in particular on a movable membrane. Blocking or opening can thereby be achieved in a simple manner. Furthermore, by providing a membrane with inherent elasticity, a restoring device can be implemented in a structurally simple manner.
  • the at least one pressure-controlled switch is followed by a distributor for cleaning fluid to the at least one cleaning roller, which distributor is fluidly connected to the fluid path.
  • a uniform application of cleaning fluid to the at least one cleaning roller, in particular over an entire length of the cleaning roller, can be achieved via the distributor.
  • the distributor is formed by a channel or comprises at least one channel.
  • a channel is designed in the shape of a half-shell. Depending on the position of the at least one channel relative to an outlet opening device in relation to the direction of gravity, an operator-controlled and gravity-controlled application of cleaning fluid to the at least one cleaning roller can be achieved or not.
  • the at least one channel extends at least approximately parallel to a longitudinal axis of the at least one cleaning roller and / or extends at least approximately parallel to an axis of rotation of the at least one cleaning roller. In this way, a uniform application of liquid can be achieved in a simple manner.
  • the at least one channel with an outlet opening device extends over at least 80% of a length of the at least one cleaning roller and in particular over an entire length of the at least one cleaning roller. As a result, a good cleaning effect is achieved over the entire length of the at least one cleaning roller.
  • the at least one channel is designed, for example, in the shape of a half-shell. In this way, an intermediate buffer for cleaning liquid can be achieved in a simple manner. Depending on the gravitational potential of the at least one channel to an outlet opening device, the at least one cleaning roller may or may not be exposed to liquid in an operator-controlled manner.
  • the distributor has an outlet opening device which is arranged and designed in such a way that, depending on an angular position of the distributor in relation to the direction of gravity, cleaning fluid flows from the distributor to the at least one cleaning roller or not. In this way, the liquid admission can be adjusted under the control of gravity.
  • the angular position of the distributor in relation to the direction of gravity is determined by an angular position of a longitudinal axis of the surface cleaning machine (and thus of the entire machine) in relation to a surface to be cleaned.
  • This angular position can easily be changed by an operator by raising or lowering a handle.
  • moistening of the at least one cleaning roller is then controlled by gravity via the distributor.
  • the surface cleaning machine is designed to be pump-free with regard to the moistening of the at least one cleaning roller by the moistening device. This results in a structurally simple and space-saving structure. Furthermore, no additional energy consumer such as a pump is necessary.
  • the fluid path has at least one gap channel, which is designed in particular in such a way that a capillary effect occurs for the flow of cleaning fluid.
  • the gap channel is connected downstream of a distributor. A uniform application of liquid to the at least one cleaning roller over its length can thereby be achieved.
  • the at least one gap channel is preferably dimensioned in such a way that a capillary effect also occurs when cleaning agent is contained in the cleaning liquid.
  • a set of the at least one cleaning roller is in contact with or almost in contact with an outlet opening device of the at least one gap channel.
  • Textile fibers of the trim of the at least one cleaning roller can temporarily cover one or more openings on the outlet opening device and thereby generate a negative pressure. This improves the distribution.
  • a distributor for cleaning fluid is connected upstream of the at least one gap channel with respect to a direction of flow for cleaning fluid.
  • the surface cleaning machine is supported on the surface to be cleaned via a cleaning roller which is driven in rotation.
  • the operator stands on the to be cleaned Surface.
  • An embodiment of a surface cleaning machine according to the invention which in the Figures 1 to 4 is shown (and in the Figures 5 to 10 in partial representation) and is designated there by 10, is designed as a floor cleaning machine for hard floors.
  • the surface cleaning machine 10 comprises a device body 12 and a cleaning head 14.
  • the cleaning head 14 is arranged on the device body 12.
  • the surface cleaning machine 10 is supported on the surface 16 to be cleaned via a cleaning roller 18.
  • the device body 12 has a longitudinal axis 20 ( Figures 2 , 3 ).
  • the surface cleaning machine 10 is held in place.
  • a rod 22 is seated on the device body 12. This rod 22 extends in the longitudinal axis 20.
  • a handle and in particular a bow-type handle 24 is arranged on an upper region of the rod 22. An operator can hold the surface cleaning machine 10 with one hand on this handle 24.
  • One or more operating elements are arranged on the handle 24.
  • a switch 26 is arranged on the handle 24.
  • the surface cleaning machine 10 can be switched on or off for a cleaning operation via the switch 26.
  • control of the surface cleaning machine 10 is such that, by actuating the switch 26, all necessary for the functioning Components (generation of a suction flow by a suction unit device, rotation of the cleaning roller 18, moistening of the cleaning roller 18) are actuated and, accordingly, switching off the switch 26 causes the actuation of these components to be switched off synchronously.
  • the rod 22 can be vertically displaceable (along the longitudinal axis 20) or fixed on the device body 12.
  • the device body 12 comprises a housing 28 in which components of the surface cleaning machine 10 are arranged in a protected manner.
  • a hook device 30 is arranged on the rod 12 between the housing 28 and the handle 24, to which a power cord can be fixed by being wrapped around the rod 22.
  • the surface cleaning machine 10 comprises a suction unit device designated as a whole by 32.
  • This suction unit device 32 is used to generate a suction flow in order to be able to perform suction on the cleaning roller 18.
  • the suction unit device 32 comprises a suction fan 34 which is arranged in the housing 28.
  • the suction fan 34 in turn has a motor and in particular an electric motor 36, which is also arranged in the housing 28.
  • a separator device 38 is assigned to the suction unit device 32. This separates solid from liquid components in a suction stream.
  • the separator device 38 is also arranged in the housing 28.
  • the separator device 38 is assigned a tank device 40 for dirty liquid. This sits removably on the housing 28.
  • a tank device 42 for cleaning fluid is also removably seated on the housing 28.
  • the cleaning liquid is in particular water or a mixture of water and cleaning agent.
  • the suction unit device 32 is in fluid communication with (at least) one suction channel 44, which is guided by the suction fan 34 on the device body 12 through the housing 28 to the cleaning head 14.
  • the suction channel 44 has a first region 46 which is positioned in the housing 28.
  • a junction 48 is located in the housing 28 on the first area 46, which branches off to a second area 50 and a third area 52 of the suction channel 44.
  • the first area 46 is thereby divided into two sub-channels.
  • the second area 50 and the third area 52 each lead to the cleaning head 14.
  • a suction port 54 which is positioned on the cleaning head 14, is assigned to the second area 50 and the third area 52.
  • a trim 56 is arranged on the cleaning roller 18 (cf. Figure 9 ).
  • This trim is, for example, a nonwoven material.
  • the suction mouth has a first mouth wall 58 and a second, spaced apart mouth wall 60 ( Figure 5 ).
  • the respective suction opening 54 is formed between the first opening wall 58 and the second opening wall 60.
  • the first mouth wall 58 lies above the second mouth wall 60 when the cleaning roller 18 is placed on the surface 16 to be cleaned.
  • the first opening wall 58 and / or the second opening wall 60 lie against the facing 56 of the cleaning roller 18 or protrude into the facing 56.
  • a corresponding mouth formation is in the not previously published international application PCT / EP2013 / 076445 of December 12, 2013 by the same applicant. Reference is made expressly and in full to this document.
  • a separate suction opening 54 can be assigned to the second area 50 and the third area 52, or a common suction opening can be provided for the second area 50 and the third area 52 of the suction channel 44. This one suction opening 54 then has two suction points over the second area 50 and the third area 52.
  • the suction unit device 32 can also be designed without branches and comprise several (in particular two) suction channels (two first regions 46) which are arranged in the housing 28. These then continue into the second area 50 or the third area 52.
  • the cleaning head 14 is held on the device body 12 via a joint 62 so as to be pivotable about a pivot axis 64 ( Figure 2 , Figure 4 ).
  • the pivot axis 64 lies transversely to the longitudinal axis 20 of the device body 12. It lies in particular at an acute angle 66 ( Figure 2 ) to the longitudinal axis 20.
  • the acute angle 66 is in particular in the range between 15 ° and 35 °. In one embodiment, the acute angle 66 is approximately 25 °.
  • the pivot axis 64 lies transversely and in particular perpendicular to an axis of rotation 68 of the cleaning roller 18.
  • the cleaning roller 18 has a longitudinal axis 70.
  • the longitudinal axis 70 is in particular coaxial with the axis of rotation 68.
  • the swivel joint comprises an inner sleeve 72 (see. For example Figure 4 ), which is arranged on the device body 12 at the acute angle 66 to the longitudinal axis 20 in accordance with the orientation of the pivot axis 64.
  • the cleaning head 14 has an outer sleeve 74 which sits on the inner sleeve 72.
  • a corresponding locking device ensures that the outer sleeve 74 cannot be displaced with respect to the inner sleeve 72 in the direction of the pivot axis 64.
  • the inner sleeve 72 has a cylindrical outer contour.
  • the outer sleeve 74 has a cylindrical inner contour.
  • the joint 62 is designed as a sliding joint via the rotatable mounting of the outer sleeve 74 on the inner sleeve 72.
  • pivotability through a full 360 ° angle can be provided.
  • the pivotability is limited, for example, to a range of ⁇ 45 ° or ⁇ 90 °.
  • a line for the areas 50, 52 between the device body 12 and the cleaning head 14 is designed to be correspondingly elastic in order to enable the cleaning head 14 to pivot (in particular in a limited pivoting range) at the joint 62.
  • a drive device 76 is provided for the rotating drive of the cleaning roller 18.
  • the drive device 76 comprises a drive motor 78.
  • This drive motor 78 is in particular an electric motor.
  • the drive motor 78 is positioned in the inner sleeve 72 of the joint 62.
  • the drive motor 78 has a motor shaft 80.
  • the motor shaft 80 has a drive axis 82.
  • the drive axis 82 is parallel and in particular coaxial with the pivot axis 64.
  • the drive motor 78 is firmly seated in the inner sleeve 72 on the device body 12. It is positioned at the transition from the device body 12 to the cleaning head 14, namely on the joint 62. It is housed in a space-saving manner and is located in the vicinity of the cleaning head 14 in relation to a focus of the surface cleaning machine 10.
  • the drive motor 78 is supplied with electrical energy, for example via mains current.
  • the drive axis 82 of the drive motor 78 and the axis of rotation 68 of the cleaning roller 18 are oriented transversely to one another and in particular oriented perpendicular to one another.
  • a transmission device 84 is provided for the transmission of torque from the drive device 76 to the cleaning roller 18.
  • the transmission device 84 comprises a speed reducer 86.
  • the speed reducer 86 is used to reduce a speed compared to the speed of the motor shaft 80.
  • the drive motor 78 is in particular a standard electric motor, which, for example, has a speed in the order of magnitude of Has 7000 revolutions per minute.
  • the speed reducer 86 ensures that the speed is reduced to approximately 400 revolutions per minute, for example.
  • the speed reducer 86 is in particular arranged directly on the drive motor 78, i. H. arranged next to it. It can still be arranged in the inner sleeve 72 or already on the cleaning head 14.
  • the speed reducer 86 is designed as a planetary gear.
  • the gear mechanism 84 also has an angular gear 88.
  • This angular gear 88 ensures a torque deflection in order to bring about a drive of the cleaning roller 18 with the axis of rotation 68 transverse to the drive axis 82 of the drive motor 78.
  • the angular gear 88 is in particular connected downstream of the speed reducer 86.
  • the angular gear 88 has one or more gearwheels which are non-rotatably coupled to a corresponding shaft of the speed reducer 86. These act on a bevel gear for angular conversion.
  • the cleaning head 14 has a first end face 90 and an opposite second end face 92 (see for example Figure 10 ). Between the first end 90 and the second end 92 a housing 94 of a cleaning roller holder 96 extends. This housing 94 partially surrounds a cleaning roller 18 held on it in the form of a half-shell, the encompassing being such that the cleaning roller 18 with a significant proportion for a cleaning process protrudes.
  • a sweeping element 98 is rotatably mounted on the housing 94 of the cleaning roller holder 96, this sweeping element 98 serving to sweep in coarse dirt to be carried along by the cleaning roller 18.
  • a cleaning head 14 with a corresponding sweeping element 98 is in the German patent application No. 10 2014 114 776.6 of October 13, 2014 by the same applicant. Reference is made expressly and in full to this document.
  • a drive element 102 is arranged in a central region 100 of the cleaning roller holder 96 between the first end face 90 and the second end face 92. This drive element 102 is connected to the drive device 76 in a torque-effective manner.
  • the drive element 102 is coupled to the angular gear 88 in a torque-effective manner via a belt 104.
  • the drive element 102 is spaced apart from the angular gear 88.
  • the belt 104 bridges this distance and causes the drive element to be driven with rotation about the axis of rotation 68.
  • a first pin 106 is arranged on the drive element 102 in a rotationally fixed manner towards the first end face 90.
  • a second pin 108 is arranged non-rotatably towards the second end face 92.
  • the cleaning roller 18 (for example Figure 9 ) is designed in two parts with a first part 110, which is non-rotatably seated on the first pin 106, and a second part 112 which is seated in a rotationally fixed manner on the second pin 108.
  • the first part 110 points to the first end face 90.
  • the second part 112 points towards the second end face 92.
  • a gap 114 is formed between the first part 110 and the second part 112. This gap 114 is relatively narrow and has a very much smaller width than a length of the cleaning roller 18 in the longitudinal axis 20.
  • the belt 104 is guided in the gap 114.
  • the belt 104 is set back with respect to an outside of the cleaning roller 18 also with respect to a position in which the facing 56 is compressed.
  • the surface cleaning machine 10 comprises a moistening device 116 for the cleaning roller 18 (in particular Figures 6 to 8 ).
  • the humidifying device comprises (at least) one pressure-controlled switch 118.
  • This pressure-controlled switch 118 is movable. (In the Figures 7 and 8th this is indicated by the double arrow 120.)
  • the pressure-controlled switch 118 comprises a movable membrane 122 on which, for example, a blocking element 124 is seated in one piece.
  • the blocking element 124 is also movable via the mobility of the membrane 122.
  • the membrane 122 has a first surface 126.
  • This first area 126 is in pressure-effective connection with the suction channel 44 and thereby with the second area 50 or the third area 52.
  • the pressure prevailing in the second area 50 (or the third area 52) is applied to the first area 126. In a cleaning operation of the surface cleaning machine 10, this pressure is a negative pressure with respect to the outer space 128 outside the surface cleaning machine 10 due to the suction flow.
  • the membrane 122 Opposite the first surface 126, the membrane 122 has a second surface 130.
  • the membrane 122 is in fluid communication with a collecting space 132.
  • the collecting space 132 can receive cleaning fluid.
  • the collecting space 132 is in fluid communication with the tank device 42 for cleaning liquid via a line 134.
  • the line 134 is led from the tank device 42 through the device body 12 to the cleaning head 14. It is designed so flexibly that it does not hinder pivotability (in particular within a finite pivoting range) of the cleaning head 14 on the device body 12 about the joint 62.
  • FIG. 9 A plurality of pressure-controlled switches 118 are arranged on the cleaning head 14.
  • the cleaning head 14 comprises two pressure-controlled switches 118.
  • One pressure-controlled switch 18 is connected to the second area 50 in a pressure-effective manner and a further pressure-controlled switch 118 is connected to the third area 52 in a pressure-effective manner.
  • the line 134 leads at a connection 136 (which is in particular a T-piece) into a distribution line 138.
  • the distribution line 138 in turn opens at a first connection point 140 and at a second connection point 142 into the housing 94
  • An associated pressure-controlled switch 118 is arranged in each case on the second connection point 142.
  • the distribution line 138 forms the collecting space 132.
  • a shut-off valve 139 is arranged on the line 134 between the distributor line 138 and the tank device 42. This can in particular be operated manually. A fluid-active connection between the tank device 42 and a fluid inlet of a pressure-controlled switch 118 can be blocked by the blocking valve 139.
  • more than two pressure-controlled switches 118 with corresponding connection points and collecting spaces can also be provided, wherein a collecting space can also be assigned to several switches 118, or only a single pressure-controlled switch 118 with only one collecting space 132 can be provided.
  • the collecting space 132 is designed in cooperation with the pressure-controlled switch 118 in such a way that cleaning fluid is constantly present in the collecting space 132 (if the shut-off valve 139 is open).
  • the second surface 130 points into a space 144 which is in pressure-effective connection with the outer space 128.
  • An openable and closable fluid path 146 is formed between the collecting space 132 and the space 144. Depending on the position of the pressure-controlled switch 118, liquid can flow from the collecting space 132 into the space 144. Depending on the position of the blocking element 124, this fluid path 146 is blocked or opened.
  • a wall 148 is arranged opposite the blocking element 124 and has a contact surface 150 for the blocking element 124.
  • the blocking element 124 rests against the contact surface 150 and the fluid path 146 is blocked; the corresponding collecting space 132 and the space 144 are fluidically separated.
  • a corresponding negative pressure is applied to the first surface 126, which causes the blocking element 124 to lift off causes the contact surface 150 and holds the locking element 124 in this raised position.
  • the lifted position is an open position of the pressure-controlled switch 118.
  • the pressure-controlled switch 118 When the blocking element 124 rests against the contact surface 150, the pressure-controlled switch 118 is in a closed position with the fluid path 146 blocked.
  • the pressure-controlled switch 118 has a reset device which, when the pressure difference between the first surface 126 and the second surface 130 is below the threshold value, causes the locking element 124 to be reset to the closed position with the locking element 124 in contact with the contact surface 150.
  • the resetting device is formed by means of the inherent elasticity of the membrane 122.
  • the transition from the open position to the closed position or vice versa of the pressure-controlled switch 118 is directly linked to the operation of the suction fan 34; the negative pressure required to move and hold the membrane 122 in the open position is brought about by the suction flow generated by the suction unit device 32.
  • a distributor 152 is assigned to the pressure-controlled switch 118 and in particular to a plurality of pressure-controlled switches 118.
  • the distributor 152 serves to distribute cleaning fluid to the cleaning roller 18 and in particular to apply fluid to it over the length of the cleaning roller 18.
  • the distributor 152 is designed as a channel 154.
  • the channel 154 receives cleaning liquid up to a certain level. It can collect cleaning fluid.
  • the channel 154 extends parallel to the longitudinal axis 70 of the cleaning roller 18 and thus parallel to the axis of rotation 68.
  • the channel 154 is assigned an outlet opening device 156, which extends in particular over the entire length of the cleaning roller 18.
  • the channel 154 is designed in the shape of a half-shell. As a result, it has a discharge opening 158 for cleaning fluid over its entire length.
  • the manifold 152 with the channel 154 can collect cleaning liquid. This creates an intermediate buffer for cleaning fluid. Cleaning liquid does not necessarily flow directly to the cleaning roller 18 on the fluid path 146, but is correspondingly collected in the channel 154.
  • FIG Figure 1 An angular position of the surface cleaning machine 10 in relation to the surface 16 to be cleaned is shown in FIG Figure 1 indicated by reference numeral 160.
  • This angular position 160 can vary.
  • the surface cleaning machine 10 is supported with the cleaning roller 18 on the surface 16 to be cleaned.
  • a support area 162 of the cleaning roller 18 on the surface 16 to be cleaned forms a pivot axis for a variation of the angular position 160.
  • the channel 154 is arranged in such a way that, when a certain pivoting angle of the angular position 160 is reached, cleaning liquid can flow from the channel 154 directly to the cleaning roller 18 ( Figure 8 ).
  • FIG. 7 a position of the distributor 152 in relation to the direction of gravity g is shown, in which the outlet opening device 156 is at a higher gravitational potential than the channel 154.
  • cleaning liquid can flow directly from the channel 154 of the cleaning roller 18 and apply cleaning liquid to it.
  • the application of liquid to the cleaning roller 18 is controlled by gravity via the angular position 160.
  • the angular position 160 is in turn set by manual operation of the operator.
  • cleaning agent is applied to the cleaning roller 18 or not. This is determined by the height distance in the direction of gravity between the outlet opening device 156 and the channel 154.
  • one or more gap channels 162 are arranged between the space or spaces 144 and the outlet opening device 156. In order to be able to reach the cleaning roller 18, cleaning fluid from the channel 154 must pass through a corresponding gap channel 162.
  • a gap channel 162 is designed in particular with dimensions such that a capillary effect occurs for the flow of cleaning liquid. Such a capillary effect supports a uniform distribution of cleaning liquid over the entire length of the cleaning roller 18. In particular, the gap channel 162 extends essentially over the entire length of the cleaning roller 18.
  • a facing 56 of the cleaning roller 18 lies or lies almost with individual fibers at the outlet opening device 156 of the gap channel 162 Rotation of the cleaning roller 18 on. As a result, a (slight) negative pressure is generated at the distributor 152, which entrains cleaning fluid. Furthermore, cleaning fluid is drawn from the gap channel 162 by the capillary action of fibers of the filling. This ensures a uniform application of cleaning fluid to the cleaning roller 18.
  • the supply of cleaning fluid to the cleaning roller 18 is designed to be pump-free.
  • the pressure-controlled switch 118 is directly coupled to a suction flow effect of the suction fan 34.
  • no additional control, and in particular electronic control, is necessary for moistening the cleaning roller 18.
  • no solenoid valves or the like are provided.
  • the surface cleaning machine 10 functions as follows: For a cleaning operation, the surface cleaning machine 10 is supported via the cleaning roller 18 on the surface 16 to be cleaned. An operator stands on the surface 16 to be cleaned behind the surface cleaning machine 10 and holds it on the handle 24, for example with one hand.
  • the operator can perform a forward thrust in the forward direction 164.
  • the suction fan 34 During a cleaning operation, the suction fan 34 generates a suction flow, which in the suction channel 44 and thus in the areas 46, 50 and 52 creates a negative pressure with respect to the outer space 128.
  • the drive motor 78 generates a torque which is transmitted to the cleaning roller 18 via the gear mechanism 84. This is driven to rotate. In particular, it is clockwise (in Figure 1 indicated by the reference numeral 166) driven in rotation.
  • the cleaning roller 18 has a peripheral speed in the range between 0.9 m / s and 1.2 m / s and in particular with a peripheral speed greater than 0.92 m / s and in particular less than 1.15 m / s is driven.
  • It is driven, for example, with a peripheral speed in the range between 0.95 m / s and 1.05 m / s. For example, it is driven at a peripheral speed of approx. 1 m / s.
  • the circumferential speed can be adjusted by an operator.
  • the drive device 76 defines the peripheral speed.
  • the cleaning roller 18 has a facing 56 which is compressible.
  • the trim 56 is made in particular from a textile material.
  • the circumferential speed does not relate to a maximum diameter of the cleaning roller 18, but to a diameter when the facing 56 is compressed, for example by the weight of the surface cleaning machine 10.
  • Too low a circumferential speed causes the surface cleaning machine to simply roll over the surface 16 to be cleaned without an adequate cleaning effect. If the circumferential speed is too high, cleaning liquid will splash.
  • the circumferential speeds mentioned are designed in particular for a working speed (forward speed) of the operator of approx. 0.9 m / s.
  • the cleaning roller 18 is moistened with cleaning agent from the tank device 42 by the moistening device 116.
  • This application of liquid is free of pumps and, in particular, free of solenoid valves.
  • cleaning liquid flows out of the tank device 42 to the collecting chamber or chambers 132.
  • the tank device In an embodiment in which the tank device is located on the cleaning head, the tank device itself can form a collecting chamber.
  • the pressure-effective connection to the pressure-controlled switch (s) 118 opens the fluid path (s) 146. Cleaning fluid can then collect in the distributor 152 and act on the cleaning roller 18 from there . A uniform application over essentially the entire length of the cleaning roller 18 along the longitudinal axis 70 is ensured.
  • the uniform distribution can be supported by capillary action by means of one or more gap channels 162.
  • an operator can set whether or not cleaning fluid flows from the distributor 152 to the cleaning roller 18.
  • This setting is controlled by gravity, depending on whether the outlet opening device 156 is positioned above or below the channel 154 in relation to the direction of gravity, capillary forces possibly being present via the gap channel 162 and a negative pressure effect due to fibers of the facing 56 on the outlet opening device 156.
  • Dirt on the surface 16 to be cleaned is softened by cleaning fluid and can then be taken along via the cleaning roller 18.
  • a suction by means of the suction flow produced takes place via the suction opening 54 or corresponding suction openings.
  • the separator device 38 there is a separation into solid dirt particles and liquid. Dirty liquid is collected in the tank device 40.
  • the joint 62 can also be used, for example, for machine corner cleaning or edge cleaning.
  • the device body 12 is pivotable relative to the cleaning head 14 about the pivot axis 64 in the pivoting range.
  • the relatively heavy drive motor 78 is arranged far down in the vicinity of the cleaning head 14 in relation to a normal operating mode and is at least partially positioned on the joint 62 in a space-saving manner. It can be positioned at least partially outside the cleaning head 14 (at a distance from the cleaning roller 18).
  • the sweeping element 98 can be used to sweep coarse dirt, which can then be carried along by the cleaning roller 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)
EP15775242.9A 2014-10-13 2015-10-08 Flächen-reinigungsmaschine mit befeuchtungseinrichtung Active EP3206549B1 (de)

Priority Applications (1)

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PL15775242T PL3206549T3 (pl) 2014-10-13 2015-10-08 Maszyna do czyszczenia powierzchni z urządzeniem nawilżającym

Applications Claiming Priority (2)

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DE102014114809.6A DE102014114809A1 (de) 2014-10-13 2014-10-13 Flächen-Reinigungsmaschine mit Befeuchtungseinrichtung
PCT/EP2015/073275 WO2016058901A1 (de) 2014-10-13 2015-10-08 Flächen-reinigungsmaschine mit befeuchtungseinrichtung

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EP3206549A1 EP3206549A1 (de) 2017-08-23
EP3206549B1 true EP3206549B1 (de) 2021-07-21

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EP (1) EP3206549B1 (pl)
CN (1) CN106998975B (pl)
DE (1) DE102014114809A1 (pl)
PL (1) PL3206549T3 (pl)
RU (1) RU2653677C1 (pl)
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PL3206549T3 (pl) 2021-12-27
US10130230B2 (en) 2018-11-20
US20170215676A1 (en) 2017-08-03
CN106998975B (zh) 2019-11-08
DE102014114809A1 (de) 2016-04-14
CN106998975A (zh) 2017-08-01
EP3206549A1 (de) 2017-08-23
RU2653677C1 (ru) 2018-05-11
UA118405C2 (uk) 2019-01-10
WO2016058901A1 (de) 2016-04-21

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