EP2820989B1 - Liquid aspirator - Google Patents

Liquid aspirator Download PDF

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Publication number
EP2820989B1
EP2820989B1 EP14180641.4A EP14180641A EP2820989B1 EP 2820989 B1 EP2820989 B1 EP 2820989B1 EP 14180641 A EP14180641 A EP 14180641A EP 2820989 B1 EP2820989 B1 EP 2820989B1
Authority
EP
European Patent Office
Prior art keywords
liquid
suction
air
housing
tank
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
EP14180641.4A
Other languages
German (de)
French (fr)
Other versions
EP2820989A2 (en
EP2820989A3 (en
Inventor
Klaus-Jürgen Fischer
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.)
Leifheit AG
Original Assignee
Leifheit AG
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 Leifheit AG filed Critical Leifheit AG
Priority to EP15176753.0A priority Critical patent/EP2959814B1/en
Publication of EP2820989A2 publication Critical patent/EP2820989A2/en
Publication of EP2820989A3 publication Critical patent/EP2820989A3/en
Application granted granted Critical
Publication of EP2820989B1 publication Critical patent/EP2820989B1/en
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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L7/00Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0004Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
    • A47L7/0009Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners with means mounted on the nozzle; nozzles specially adapted for the recovery of liquid
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L1/00Cleaning windows
    • A47L1/02Power-driven machines or devices
    • A47L1/05Hand apparatus with built-in electric motors
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts 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
    • A47L11/4013Contaminants collecting devices, i.e. hoppers, tanks or the like
    • A47L11/4016Contaminants collecting devices, i.e. hoppers, tanks or the like specially adapted for collecting fluids
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts 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
    • A47L11/4027Filtering or separating contaminants or debris
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts 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
    • A47L11/4036Parts or details of the surface treating tools
    • A47L11/4044Vacuuming or pick-up tools; Squeegees
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00Structural features of suction cleaners
    • A47L5/12Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/24Hand-supported suction cleaners
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L7/00Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0004Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L7/00Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0004Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
    • A47L7/0023Recovery tanks
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L7/00Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0004Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
    • A47L7/0023Recovery tanks
    • A47L7/0028Security means, e.g. float valves or level switches for preventing overflow
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details 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
    • A47L9/02Nozzles
    • A47L9/06Nozzles with fixed, e.g. adjustably fixed brushes or the like
    • A47L9/0606Nozzles with fixed, e.g. adjustably fixed brushes or the like rigidly anchored brushes, combs, lips or pads
    • A47L9/0626Rigidly anchored lips, e.g. nozzles adapted for picking up liquids

Definitions

  • Such a liquid suction device is known from US 4,831,685 A known.
  • This device is designed as a water suction and has a tank in which a flow deflection is provided which deflects the sucked air / water mixture radially outward.
  • the suction channel opens like a nozzle into the tank, and the sucked mixture of water and air is directed in the direction of a plate-shaped baffle element, from which it flows radially at least 90 ° deflected radially outward.
  • the exhaust duct also protrudes into the tank, and has at the top an opening through which the separated from the water Lauft can flow out of the tank or is sucked.
  • the WO 2010/018342 A2 shows a similar liquid suction device.
  • Another remplisstiksssaugvorraum for removing and absorbing liquids of this kind is from the DE 10 2008 004 964 B and also from the DE 10 2008 004 965 B known.
  • the known devices have to avoid water fractions, which pass through the exhaust duct to the outside to a flow channel, which leads from a front Abziehlippe to an air outlet in the rear of the device area. Via a suction mouth, liquid collected by the draw-off lip is sucked together with ambient air into the device, which is separated from the air in a separation chamber and fed to a tank.
  • a separation device For separation of liquid and air, a separation device is provided in the deposition chamber, which essentially consists of a profile for deflecting the flow of the water / air Mixture exists. This deflection causes the heavier water to bounce against the profile and drip from there into temporary storage tank and, with proper orientation of the unit, drain into a tank.
  • the air on the other hand, can follow the vacuum and is sucked around the profile into the exhaust duct.
  • the disadvantage of the known devices is that they have to be manually switched on and off by a switch, which in turn has the disadvantage that the device often runs too long and unnecessarily consumes battery reserves.
  • the object of the invention is therefore to provide an easy-to-handle pressesstechniksssaugvorraum having an optimized energy consumption with reliable operation.
  • a remplisstiksssaugvorraum which is designed such that an on and off function is provided, which turns on the motor drive of the suction unit when pressure on the Abziehlippe or increases the engine power, and switches off the motor drive with decreasing pressure or Engine power reduced.
  • the window cleaning device is now provided with an on and off function, which either shuts down the motor drive of the suction unit completely or to avoid too long recovery times in the performance.
  • the on and off function is designed such that a pressure on the Abziehlippe turns on the device or increases the engine power. Decreasing pressure then causes the switching off or the reduction of the power.
  • a timer may be provided which shuts off or reduces after a certain, predetermined suction time.
  • an orientation switch may additionally be provided which shuts down or shuts down the suction unit when the apparatus is tilted or pivoted from an upright position with the topmost pick-off lip. Since a suction effect may also be desired, or even in the case of transverse movements with a laterally positioned pull-off lip, for example, the orientation switch may be configured to be activated only when the peel lip is facing down. A delay switch can delay the switch-off function, so that a short swing does not have any influence on the motor function.
  • the Abziehlippe can be easily against the force of a return spring or elasticity of the component itself pivotally mounted on the housing, the pivotal bearing comprises a button that is able to detect a slight backward pivoting of the Abziehlippe and convert it into a switch-on. Similar to a stand-by circuit, this can be done via a secondary circuit, so that an initial pressure on the Abziehlippe the device activated in total.
  • the liquid is deflected directly into the tank.
  • the tank and the separation chamber are combined, that is, the intake opens into the tank, which forms the separation space with its central region.
  • the intake opens with a free pipe socket in the tank.
  • the resulting flow of the liquid / air mixture then impinges on the separator arranged at the outlet.
  • This has the form of a baffle plate, which deflects the flow radially outward into the tank.
  • the separation device may be stationary or rotating.
  • the separation device In the case of a fixed separating device, this may be formed by a disc which is thinner from the inside out, the contour, on which the flow impinges, following a curved outwardly directed flow line. That is, the separation device has, for example, the shape of a cone or a valve stem. Preferably, it deflects the flow as far as possible with a large deflection angle but low resistance in order not to obstruct the air flow and thus to keep energy consumption low, and on the other hand to optimize the separation function as much as possible by the changes in direction.
  • the exhaust duct projects in a preferred embodiment with a pipe socket in the tank. Alternatively, it can also be flush with the tank wall. In all cases, it should be provided with a means, prevents or at least suppressed that water enters the exhaust duct and is expelled with the air flow from the device.
  • the means for retaining the water is a flow labyrinth.
  • This together with the separation device, provides effective protection against ingress of water without requiring special rest spaces for the flow beyond the tank.
  • a kind of cap is placed on the projecting into the tank pipe socket, which reverses the air flow twice in its flow direction.
  • the cap can be closed at the front be, and with a wall portion longest of the exhaust duct forming pipe socket extend, leaving between the pipe socket and the cap an annular gap or other air passages through which the air can flow substantially parallel to the nozzle axis first forward again until they reach the front area reaches the cap in the interior, where then the air flow is reversed in their direction again and can enter the pipe socket.
  • the annular gap is preferably designed so that, when the device is held horizontally, water which enters the annular gap flows back into the tank again.
  • the annular gap in the direction of the end of the pipe socket may be slightly widened in diameter.
  • additional means may be provided to direct water out of the nozzle, which has occurred despite all precautions. These can be, for example, small drain holes that return water back into the tank.
  • a circumferential annular gap can also be provided in the exhaust air duct. Possible leakage air flows can be accepted, as long as a sufficiently large proportion of air is extracted.
  • the separation device can also be designed as a rotor, which then functions as a dynamic separation device.
  • the device has a Abziehlippe in the front region and is preferably designed as a one-handed device.
  • the housing has a handle with which it is held, so that it can be performed like a conventional window wiper, for example, along a glass so that the liquid can be removed from this glass and sucked up at the same time.
  • the suction mouth is provided, which may be formed as a slot die.
  • a typical application of the invention is, for example, a window cleaning device with which water can be withdrawn and filed for cleaning the window.
  • a sponge may be arranged, which can be employed depending on the orientation of the device instead of the Abziehlippe to the window so as to first clean the window wet.
  • a liquid supply may be provided, via which a cleaning liquid can be pumped manually or by a motor before the Abziehlippe or sponge or directly into the sponge.
  • the Abziehlippe may also be bent or V-shaped, so that the withdrawn liquid is collected in the central region, where then a differently shaped, for example punctually acting, suction mouth can suck in the liquid.
  • This embodiment will be particularly suitable for devices which have a movable Abziehlippe, and are provided in particular for the ground or other horizontal surfaces.
  • a flow path leads via the suction channel into the hollow chamber and from there via the exhaust air duct to a rear outlet, from which the air that has been separated from the liquid in the hollow chamber can escape again.
  • the suction effect is generated by a rotor which produces (not described here in detail) a negative pressure driving the flow, as is the case with the known liquid suction devices.
  • This rotor is driven by a motor, wherein the motor is preferably powered by a battery or batteries to ensure location independence.
  • the liquid / air flow is directed directly into the tank and the water is separated both when entering and exiting the tank.
  • the separating agents into a front separating device and a rear splash guard, the water can be effectively separated from the air without the need for space-consuming temporary storage. Instead, the available space can be used directly for the tank volume.
  • a further preferred embodiment of the invention has a separation device in the form of a moving rotor.
  • the motor drives for driving the suction pressure generating rotor preferably also designed in the form of a front rotor deposition device within the hollow chamber.
  • the drive motor is first connected to the turbine wheel designed, for example, the rotor wheel of the suction unit and offset this in rotation. As in the case of a conventional vacuum cleaner, this results in the negative pressure, so that air is conveyed through the housing through the intake duct, the hollow chamber and the exhaust air duct.
  • This suction unit is then connected via a further drive shaft with the front rotor, which acts here as a separator.
  • An essential feature of this aspect of the invention is the fact that the liquid / air mixture sucked in via the intake duct no longer impinges exclusively on a separating baffle plate but on the motor-driven rotor arranged in the hollow chamber. At the same time, an area of this hollow chamber forms the tank and also the separation chamber, within which the rotor ensures the separation of the liquid from the mixture.
  • the rotor For separating the liquid from the aspirated liquid / air flow, the rotor has at least one impact surface on which the flow is directed.
  • This impact surface will not usually come into direct contact with the flow, but as a flow obstacle cause a reversal of direction for the air flow, while the heavier fluid particles of the flow impinge on the impact surface or due to their inertia are directed in a direction other than the air.
  • the air will essentially follow the vacuum and take the shortest flow path.
  • the liquid on the other hand, is not deflected so quickly because of its higher inertial forces and therefore describes a trajectory with larger radii.
  • this leads to the fact that the two media follow different flow paths and, in addition, because of the larger required flow radius, the liquid impinges against side walls or onto the rotor itself. The latter, in turn, causes the liquid to be separated from the air stream and collected in the annular cavity surrounding the suction channel, the deposition chamber and the exhaust channel.
  • the rotor wheel may have a substantially larger diameter than the inner diameter of the intake passage. So that the impact surface is hit by the flow, flow guide profiles can be arranged in the intake channel or shortly behind it, which deflect the flow onto the impact surface.
  • a Strömungsleitprofil is used, which may be formed, for example, bell-shaped or cone-shaped, wherein the tip is arranged in the intake passage and the rearwardly widening portion deflects the flow to the outside. This flow then impinges in the outer region on the annular impact surface, wherein the liquid components are then accelerated by the rotating rotor wheel and thrown into the outer region of the hollow chamber. From the inner outer wall, they will then drain down, the device is usually held in the operating position so that the Abziehlippe is up and around the exhaust duct, the separated liquid.
  • the housing may be formed in two parts, so that, for example, the hollow chamber can be taken out together with the entire tank.
  • the hollow chamber is formed as a separate, for example cylindrical, component which can be plugged onto the exhaust air duct or the supply air duct, wherein the parting plane of the housing is in the region of the hollow chamber.
  • the housing is provided with a safety switch, which shuts off the engine when opening the housing or prevents switching on the motor by interrupting the power supply.
  • the hollow chamber may also be formed by the housing itself, so that the inside of a section of the housing forms the outside of the hollow chamber. In this case, two partitions are provided in the housing, one of which has a passage for the intake passage and a passage for the exhaust air passage.
  • the feed channel may be provided, which is pulled out of the hollow chamber with the front housing part of the remaining housing.
  • Annular seals can seal off the intake passage so that, while it can be pulled out, on the one hand, with the front housing part, on the other hand, it can also be put together in a sealing manner. If the front housing part removed, then the hollow chamber can be deducted as a hollow cylindrical member of the exhaust duct, which in turn can be sealed by ring seals.
  • the above-mentioned embodiment makes it possible to disassemble and clean the housing and usefully also the hollow chamber itself.
  • the hollow chamber in turn may be formed in two parts, so that they can be disassembled into two housing halves.
  • the separator forming the rotor may also be designed to be removable, so that this can be easily cleaned. If the hollow body forming the cylindrical body is formed in two parts, of course, the two parts must also be connected to each other via seals, so that when lying device no liquid can escape from the cavity.
  • one feature is the fact that the liquid that is in the liquid / air stream is thrown outward over the rotor or is separated from the air stream, so that liquid can then accumulate in the cavity serving as a tank to later to be evacuated.
  • the sosstechniksssaugvorraum will be designed in most cases as a handheld device, which is used as a window puller in a transverse position or even over the head, it is important that the liquid can not leak through the intake again. For this reason, the suction duct protrudes into the cavity with a pipe socket, so that even in the overhead position, liquid remains around this intake pipe in the tank and does not run out of the suction duct.
  • the tank is formed by a region of the hollow chamber in which the suction channel and the exhaust duct are introduced from above and below, so that is ensured due to the nozzle-like projecting channel ends in all orientations of the device that the liquid separated from the air flow not can run out again.
  • This function can be enhanced by a cross section of the intake duct or of the drainage channel that widens slightly in the direction of the interior of the hollow chamber.
  • the cavity forming the tank can be closed by means of a stopper, which provides a way to the outside releases. So here is an emptying channel connected to the cavity through which the device can be emptied.
  • the device is simply taken apart as already described, and emptied half of the cavity after its disassembly.
  • a third possibility of emptying is that the intake duct or the exhaust duct are slidably mounted in the housing, so that one of the two parts can each pull out until no pipe socket protrudes into the cavity.
  • the device can be turned upside down and the suction channel, which can be firmly connected to the Abziehlippe example, be pulled forward. Due to the fact that this eliminates the pipe socket projecting into the cavity, the flow resistance is canceled and the liquid in the cavity can run out.
  • Additional valve means can be provided both on the exhaust duct side and on the intake duct side, which, for example, can additionally seal off the exhaust duct or the intake duct as pure flaps if liquid threatens to escape due to an unfavorable rotation of the apparatus.
  • the intake channel coming from the Abziehlippe protrudes with its pipe socket into the cavity, while opposite the exhaust duct also protrudes into the cavity.
  • Between the two pipe sockets creates a gap in which the rotor is arranged, which acts here as a separator.
  • the liquid / air flow impinges on this rotor, wherein between the intake passage and the rotor, a gap is provided, which on the one hand is small enough to maintain the suction pressure, and on the other hand is large enough, without large power losses, the liquid / air flow through to promote the device.
  • the Cavity projecting nozzle of the exhaust duct over its circumference have an air inlet opening, so that the air can be sucked out of the cavity.
  • a further preferred embodiment has a rotor which is permeable in the middle and is arranged directly in front of the connecting piece of the exhaust air duct projecting into the cavity.
  • the drive shaft for the rotor extends through the exhaust air duct, so that the rotor and the drive shaft are arranged concentrically to the cylindrical drive channel.
  • a flow-guiding profile can be provided in the intake channel in this embodiment, which guides the flow out of the intake channel to the outside.
  • the rotor has, surrounding the opening for the entry into the exhaust duct, a pipe socket which projects into the here bell-shaped or cone-shaped flow guide.
  • a further embodiment of the invention has a Abziehlippe, which is formed together with the suction mouth as a separate component and inserted into the device, wherein the suction port is connected via a sealing pipe plug connection with the intake passage.
  • This embodiment has the advantage that the functional unit, which is formed by the Abziehlippe and the suction mouth, are completely removed and can be connected via a hose to the device. This makes it possible to attach this functional unit to a stick or a hose, and thus to provide a light puller with suction, while the rest of the device is either worn on a strap for example by the operator or as a floor standing on the ground.
  • this is provided with a suction channel and can be connected to the device on one side and the unit of Abziehlippe and suction mouth on the other side, so that on the suction channel or hose, the water in front of the suction mouth and are sucked can.
  • only the Abziehlippe can be made removable. This makes it possible to use the Abziehlippe independently of the device when the suction function is not needed.
  • the housing in particular at the, opposite the suction mouth back, have a receptacle for a stem.
  • a receptacle for a stem is preferably a universal receptacle for stems of household appliances, which are already present in the household anyway.
  • the stem which may also be formed as a telescopic handle, are easily attached to the housing. Also in this way, the range of the user can be easily and simply increased.
  • the Abziehlippe and optionally also the suction mouth can also be mounted rotatably or pivotally on the housing, which can be done for example via a sealing ball joint, which is arranged in the connection between the housing and the Abziehlippe and the suction mouth having unit.
  • This ball joint can be designed so that the intake passage is passed through the joint.
  • the suction channel can also be guided laterally past the joint in the form of a tube.
  • FIG. 1 a liquid suction device according to the invention is shown.
  • the upper area is uncut, the lower area shown in section, wherein for reasons of clarity on the representation of the cut edges of the housing 1 has been omitted.
  • the device has in the front region a Abziehlippe 7, which is able to extract liquid from a surface.
  • the classic application of this device is the removal of water from a window surface.
  • a suction mouth 5 is arranged, which is here designed as a wide nozzle whose width substantially corresponds to the width of the Abziehlippe 7.
  • Via a suction channel 4 the liquid / air mixture is sucked into a hollow chamber 2, wherein in the hollow chamber 2, a separation chamber 8 is provided with a separation device which is able to separate the liquid from the air flow.
  • the hollow chamber 2 is provided as a central, tank-like component.
  • This hollow chamber 2 combines different functions of the sosstechniksssaugvoriques together. First, it is the tank into which separated liquid can be collected, which has been separated from the liquid / air mixture. On the other hand, the separation chamber 8 is also integrated here, in which the separation of the air from the liquid takes place. Finally, the hollow chamber 2 forms a protection against re-leakage of the deposited liquid.
  • These two channels are arranged concentrically to each other and run towards each other, wherein between the ends of the two channels, the separation device 13 is arranged.
  • FIG. 2 shows a first embodiment of the invention with a rigid separator 13, which is designed here as a stator and deflects the flow radially outward into the tank.
  • the exhaust duct 3 protrudes with an intake 11 into the tank.
  • the exhaust pipe channel 3 is provided with a flow labyrinth 12, that, as can be seen from the arrow schematically indicating the air flow, forces a double reversal of direction of the flow and thus separates residual water from the air that in Tank remains.
  • a rotor 6 is arranged.
  • This rotor 6 in turn is driven via a drive shaft 9, wherein the drive shaft 9 is arranged concentrically to the exhaust air duct 3.
  • the rotor 6 protrudes with impact surfaces laterally beyond the exhaust air duct 3 into the hollow chamber 2.
  • a flow guide 10 which here has the shape of an internally hollow truncated cone.
  • This truncated cone derives the aspirated mixture of water and air in the intake duct 4 to the outside, so that it meets the outer region of the rotor 6, which forms the impact surface here.
  • This causes the sucked liquid / air flow in radial direction and also in the circumferential direction of the rotor 6 is accelerated, wherein the carrier liquid describes a different trajectory than the lighter air.
  • FIG. 3 how out FIG. 3 can be seen, are the engine and the suction unit in the rear of the housing 1, in which the power supply is arranged in the form of a battery. This causes the center of gravity of the device to be displaced to the rear so that it can be easily moved in an upright position along a disk or other surface.
  • the suction mouth 5 In the front region of the Abziehlippe 7 is arranged, behind which the suction mouth 5 is provided. From here, the flow channel through the intake passage 4 into the hollow chamber 2.
  • the housing has on its, the suction mouth opposite back a receiving socket 14 for a stem, in which a stem can be inserted and in which the stem via a friction or Form fit is fastened.
  • FIG. 4 is the area of the rotor 6 within the hollow chamber 2 again shown in an enlarged view. As shown, the rotor 6 protrudes into the flow guide 10. For this purpose, it has an annular pipe socket, which projects from the rotor wheel 6 toward the front in the direction of the intake duct 4.
  • the illustrated embodiment of the fluid collection device is just one possible way to make use of the basic principle of the invention.
  • Essential to the invention is the fact that no separate Abscheidesch is provided and that the liquid / air flow is directed directly to a rotor wheel 6, which exploits the different dynamic inertias of air and liquid due to its rotation to separate the two streams from each other ,
  • the rotor wheel 6 can be driven via a drive shaft 9 through the exhaust air duct 3, it being alternatively also possible, of course, for the rotor wheel 6 to be driven by a separate drive.
  • a level sensor may be provided, which may be formed for example by an electrical contact and the engine turns off when a certain liquid level is reached, beyond which it is no longer guaranteed that no liquid through the exhaust duct 3 or the intake. 4 can escape.
  • the accumulator arranged in the rear region of the device can preferably be detachably connected to the housing 1, so that it can be removed, for example, for recharging and plugged into a socket.
  • the housing 1 can have a fastening possibility for a handle in the rear region, so that the device can also be used at greater heights.
  • a further advantageous embodiment has as Abziehlippe 7 a peelable rubber lip, which is fixed for example on a projecting into the housing 1 holding rod such that it is arranged in front of the suction mouth 5 as shown.
  • the support rod can then be designed as a suction tube and be detachably inserted into the housing 1, which has the advantage that the user can remove the Abziehlippe 7 for smaller, difficult jobs without Saugnotwendtechnik and use as a lightweight puller.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Centrifugal Separators (AREA)
  • External Artificial Organs (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)

Description

Flüssigkeitssaugvorrichtung zum Abziehen und Aufsaugen von Flüssigkeiten mit

  • einem Gehäuse,
  • einer von zumindest einer Abziehlippe gebildeten Abziehvorrichtung zum Abziehen und Sammeln der Flüssigkeit vor wenigstens einem Saugmund,
  • einer, ein motorisch angetriebenes Saugaggregat aufweisenden, Saugvorrichtung, die einen Luft-/Flüssigkeitsstrom längs eines Strömungsweges von dem Saugmund durch einen Ansaugkanal in das Gehäuse zu saugen vermag,
  • einer Abscheidevorrichtung zum Abscheiden der Flüssigkeit von der Luft,
  • einem Tank zur Aufnahme der abgeschiedenen Flüssigkeit, und
  • einem, mit einem Saugunterdruck beaufschlagten Abluftkanal zur Ausleitung der Luft aus dem Gehäuse.
Liquid suction device for removing and absorbing liquids with
  • a housing,
  • a pulling device formed by at least one Abziehlippe for withdrawing and collecting the liquid before at least one suction mouth,
  • a, a motor-driven suction unit having, suction device which is capable of sucking an air / liquid flow along a flow path from the suction mouth through a suction channel into the housing,
  • a separation device for separating the liquid from the air,
  • a tank for holding the separated liquid, and
  • a, acted upon by a vacuum suction exhaust duct for discharging the air from the housing.

Eine derartige Flüssigkeitssaugvorrichtung ist aus der US 4 831 685 A bekannt. Diese Vorrichtung ist als Wassersauger konzipiert und weist einen Tank auf, in dem eine Strömungsumlenkung vorgesehen ist, die angesaugtes Luft-/Wassergemisch radial nach außen ablenkt. Der Ansaugkanal mündet stutzenartig in den Tank, und die angesaugte Mischung aus Wasser und Luft ist in Richtung eines plattenförmigen Prallelementes gelenkt, von dem sie um wenigstens 90° umgelenkt radial nach außen strömt. Der Abluftkanal ragt ebenfalls in den Tank ein, und weist an der Oberseite eine Öffnung auf, durch die die vom Wasser getrennte Lauft aus dem Tank abströmen kann bzw. abgesaugt wird. Die WO 2010/018342 A2 zeigt eine ähnliche Flüssigkeitssaugvorrichtung.Such a liquid suction device is known from US 4,831,685 A known. This device is designed as a water suction and has a tank in which a flow deflection is provided which deflects the sucked air / water mixture radially outward. The suction channel opens like a nozzle into the tank, and the sucked mixture of water and air is directed in the direction of a plate-shaped baffle element, from which it flows radially at least 90 ° deflected radially outward. The exhaust duct also protrudes into the tank, and has at the top an opening through which the separated from the water Lauft can flow out of the tank or is sucked. The WO 2010/018342 A2 shows a similar liquid suction device.

Eine weitere Flüssigkeitssaugvorrichtung zum Abziehen und Aufsaugen von Flüssigkeiten dieser Art ist aus der DE 10 2008 004 964 B und auch aus der DE 10 2008 004 965 B bekannt. Die bekannten Vorrichtungen weisen zur Vermeidung von Wasseranteilen, die über den Abluftkanal nach außen gelangen einen Strömungskanal auf, der von einer vorderen Abziehlippe zu einem Luftauslass im hinteren Gerätebereich führt. Über einen Saugmund wird von der Abziehlippe gesammelte Flüssigkeit zusammen mit Umgebungsluft in das Gerät eingesogen, die in einer Abscheidekammer von der Luft getrennt wird und einem Tank zugeführt wird.Another Flüssigkeitsssaugvorrichtung for removing and absorbing liquids of this kind is from the DE 10 2008 004 964 B and also from the DE 10 2008 004 965 B known. The known devices have to avoid water fractions, which pass through the exhaust duct to the outside to a flow channel, which leads from a front Abziehlippe to an air outlet in the rear of the device area. Via a suction mouth, liquid collected by the draw-off lip is sucked together with ambient air into the device, which is separated from the air in a separation chamber and fed to a tank.

Zur Trennung von Flüssigkeit und Luft ist in der Abscheidekammer eine Abscheidevorrichtung vorgesehen, die im Wesentlichen aus einem Profil zur Umlenkung der Strömung des Wasser-/Luft Gemisches besteht. Diese Umlenkung führt dazu, dass das schwerere Wasser gegen das Profil prallt und von dort in Zwischenspeicher tropft und bei geeigneter Ausrichtung des Geräts in einen Tank abfließt. Die Luft dagegen kann dem Unterdruck folgen und wird um das Profil herum in den Abluftkanal gesogen.For separation of liquid and air, a separation device is provided in the deposition chamber, which essentially consists of a profile for deflecting the flow of the water / air Mixture exists. This deflection causes the heavier water to bounce against the profile and drip from there into temporary storage tank and, with proper orientation of the unit, drain into a tank. The air, on the other hand, can follow the vacuum and is sucked around the profile into the exhaust duct.

Eine ähnliche Vorrichtung zeigt die US 2010/0050368 A , die allerdings ebenfalls einen separaten Tank aufweist, der über Rückschlagventile vor einem Zurücklaufen der Flüssigkeit in einer ungünstigen Lage der Vorrichtung geschützt ist.A similar device shows the US 2010/0050368 A However, which also has a separate tank which is protected by check valves against backflow of the liquid in an unfavorable position of the device.

Der Nachteil der bekannten Vorrichtungen besteht darin, dass sie durch einen Schalter manuell ein- und ausgeschaltet werden müssen, was wiederum den Nachteil hat, dass das Gerät oft zu lange läuft und unnötig Batteriereserven verbraucht.The disadvantage of the known devices is that they have to be manually switched on and off by a switch, which in turn has the disadvantage that the device often runs too long and unnecessarily consumes battery reserves.

Aus der FR 2 196 774 A ist ein Bodenstaubsauger zum Aufsaugen von Flüssigkeiten bekannt, der einen Schalter aufweist, über den der Motor bei aufgerichtetem Gehäuse abschaltbar ist. Diese Technik weist allerdings bei handgehaltenen Geräten den Nachteil auf, dass der Schalter bei Bewegung des Gerätes längs einer vertikalen oder schrägstehenden Fläche das Gerät unbeabsichtigt ausschalten kann.From the FR 2 196 774 A is a vacuum cleaner for vacuuming liquids is known, which has a switch over which the motor is switched off when erected housing. However, this technique has the disadvantage of hand-held devices that the switch can inadvertently switch off the device when moving the device along a vertical or inclined surface.

Aufgabe der Erfindung ist es daher, eine leicht handhabbare Flüssigkeitssaugvorrichtung zu schaffen, die bei zuverlässigem Betrieb einen optimierten Energieverbrauch aufweist.The object of the invention is therefore to provide an easy-to-handle Flüssigkeitsssaugvorrichtung having an optimized energy consumption with reliable operation.

Diese Aufgabe wird erfindungsgemäß durch eine Flüssigkeitssaugvorrichtung gelöst, die derart ausgebildet ist, dass eine Ein- und Ausschaltfunktion vorgesehen ist, die den motorischen Antrieb des Saugaggregates bei Druck auf die Abziehlippe einschaltet oder die Motorleistung erhöht , und bei nachlassendem Druck den motorischen Antrieb ausschaltet oder die Motorleistung reduziert.This object is achieved by a Flüssigkeitsssaugvorrichtung, which is designed such that an on and off function is provided, which turns on the motor drive of the suction unit when pressure on the Abziehlippe or increases the engine power, and switches off the motor drive with decreasing pressure or Engine power reduced.

Erfindungsgemäß ist die Fensterreinigungsvorrichtung nun mit einer Ein- und Ausschaltfunktion versehen, die entweder den motorischen Antrieb des Saugaggregats vollständig oder zur Vermeidung zu großer Wiederanlaufzeiten in der Leistung herunterfährt. Die Ein- und Ausschaltfunktion ist derart ausgebildet, dass ein Druck auf die Abziehlippe das Gerät einschaltet oder die Motorleistung erhöht. Nachlassender Druck bewirkt dann das Ausschalten oder die Reduktion der Leistung.According to the invention, the window cleaning device is now provided with an on and off function, which either shuts down the motor drive of the suction unit completely or to avoid too long recovery times in the performance. The on and off function is designed such that a pressure on the Abziehlippe turns on the device or increases the engine power. Decreasing pressure then causes the switching off or the reduction of the power.

Zusätzlich kann auch eine Zeitsteuerung vorgesehen sein, die nach einer gewissen, vorgegebenen Saugdauer abschaltet oder reduziert. Schließlich kann zusätzlich ein Orientierungsschalter vorgesehen sein, der das Saugaggregat abschaltet oder herunterfährt, wenn das Gerät von einer aufrechten Position mit oben angeordneter Abziehlippe gekippt oder geschwenkt wird. Da auch oder gerade bei Querbewegungen mit seitlich positionierter Abziehlippe ein Saugeffekt gewünscht sein kann, kann der Orientierungsschalter so ausgebildet sein, dass er erst aktiviert wird, wenn die Abziehlippe nach unten zeigt. Ein Verzögerungsschalter kann die Abschaltfunktion verzögern, so dass ein kurzes Verschwenken noch keinen Einfluss auf die Motorfunktion hat.In addition, a timer may be provided which shuts off or reduces after a certain, predetermined suction time. Finally, an orientation switch may additionally be provided which shuts down or shuts down the suction unit when the apparatus is tilted or pivoted from an upright position with the topmost pick-off lip. Since a suction effect may also be desired, or even in the case of transverse movements with a laterally positioned pull-off lip, For example, the orientation switch may be configured to be activated only when the peel lip is facing down. A delay switch can delay the switch-off function, so that a short swing does not have any influence on the motor function.

Zur Umsetzung des Druckschalters kann die Abziehlippe leicht gegen die Kraft einer Rückstellfeder oder einer Elastizität des Bauteils selbst schwenkbar am Gehäuse gelagert sein, wobei das schwenkbare Lager einen Taster umfasst, der ein leichtes nach hinten Verschwenken der Abziehlippe zu erkennen und in einen Einschaltimpuls umzuwandeln vermag. Ähnlich wie bei einer Stand-by-Schaltung kann dies über eine Sekundär-Schaltung erfolgen, so dass ein initialer Druck auf die Abziehlippe das Gerät insgesamt aktiviert.To implement the pressure switch, the Abziehlippe can be easily against the force of a return spring or elasticity of the component itself pivotally mounted on the housing, the pivotal bearing comprises a button that is able to detect a slight backward pivoting of the Abziehlippe and convert it into a switch-on. Similar to a stand-by circuit, this can be done via a secondary circuit, so that an initial pressure on the Abziehlippe the device activated in total.

Bei einer weiteren Ausgestaltung der Erfindung wird die Flüssigkeit unmittelbar in den Tank umgelenkt. Hierzu sind der Tank und der Abscheideraum miteinander kombiniert, das heißt, der Ansaugkanal mündet in den Tank, der mit seinem mittleren Bereich den Abscheideraum bildet.In a further embodiment of the invention, the liquid is deflected directly into the tank. For this purpose, the tank and the separation chamber are combined, that is, the intake opens into the tank, which forms the separation space with its central region.

Bei einer möglichen Ausgestaltung mündet der Ansaugkanal mit einem freien Rohrstutzen in den Tank. Die hieraus austretende Strömung des Flüssigkeits-/Luftgemischs trifft dann auf die am Austritt angeordnete Abscheidevorrichtung. Diese weist die Form eines Prallblechs auf, das die Strömung radial nach außen in den Tank umlenkt. Die Abscheidevorrichtung kann feststehend oder rotierend ausgebildet sein.In one possible embodiment of the intake opens with a free pipe socket in the tank. The resulting flow of the liquid / air mixture then impinges on the separator arranged at the outlet. This has the form of a baffle plate, which deflects the flow radially outward into the tank. The separation device may be stationary or rotating.

Im Falle einer feststehenden Abscheidevorrichtung kann diese von einer Scheibe gebildet sein, die von innen nach außen dünner wird, wobei die Kontur, auf die die Strömung prallt, einer gekrümmt nach außen gerichteten Strömungslinie folgt. Das heißt, die Abscheidevorrichtung weist zum Beispiel die Form eines Kegels oder eines Ventilstössels auf. Bevorzugt lenkt er die Strömung möglichst mit großem Umlenkwinkel aber geringem Widerstand um, um einerseits die Luftströmung nicht zu behindern und damit den Energieverbrauch gering zu halten, und andererseits die Abscheidefunktion durch die Richtungsänderungen möglichst zu optimieren.In the case of a fixed separating device, this may be formed by a disc which is thinner from the inside out, the contour, on which the flow impinges, following a curved outwardly directed flow line. That is, the separation device has, for example, the shape of a cone or a valve stem. Preferably, it deflects the flow as far as possible with a large deflection angle but low resistance in order not to obstruct the air flow and thus to keep energy consumption low, and on the other hand to optimize the separation function as much as possible by the changes in direction.

Auch der Abluftkanal ragt bei einer bevorzugten Ausgestaltung mit einem Rohrstutzen in den Tank. Alternativ kann er auch bündig mit der Tankwandung abschließen. In allen Fällen sollte er mit einem Mittel versehen sein, verhindert oder zumindest unterdrückt, dass Wasser in den Abluftkanal gelangt und mit dem Luftstrom aus dem Gerät ausgestoßen wird.Also, the exhaust duct projects in a preferred embodiment with a pipe socket in the tank. Alternatively, it can also be flush with the tank wall. In all cases, it should be provided with a means, prevents or at least suppressed that water enters the exhaust duct and is expelled with the air flow from the device.

Bevorzugt ist das Mittel zum Zurückhalten des Wassers ein Strömungslabyrinth. Dieses bildet zusammen mit der Abscheidevorrichtung einen effektiven Schutz vor einem Wassereintritt, ohne dass über den Tank hinaus besondere Ruheräume für die Strömung notwendig werden. Hierzu wird zum Beispiel auf den in den Tank ragenden Rohrstutzen eine Art Kappe aufgesetzt, die den Luftstrom zweimal in seiner Strömungsrichtung umkehrt. Hierzu kann die Kappe vorne geschlossen sein, und sich mit einem Wandbereich längst des den Abluftkanal bildenden Rohrstutzens erstrecken, wobei zwischen dem Rohrstutzen und der Kappe ein Ringspalt oder sonstige Luftdurchlässe verbleiben, durch die die Luft im Wesentlichen parallel zur Stutzenachse zunächst wieder nach vorne strömen kann, bis sie den vorderen Bereich der Kappe in deren Inneren erreicht, wobei dort dann die Luftströmung in ihrer Richtung wiederum umgekehrt wird und in den Rohrstutzen eintreten kann.Preferably, the means for retaining the water is a flow labyrinth. This, together with the separation device, provides effective protection against ingress of water without requiring special rest spaces for the flow beyond the tank. For this purpose, for example, a kind of cap is placed on the projecting into the tank pipe socket, which reverses the air flow twice in its flow direction. For this purpose, the cap can be closed at the front be, and with a wall portion longest of the exhaust duct forming pipe socket extend, leaving between the pipe socket and the cap an annular gap or other air passages through which the air can flow substantially parallel to the nozzle axis first forward again until they reach the front area reaches the cap in the interior, where then the air flow is reversed in their direction again and can enter the pipe socket.

Der Ringspalt ist bevorzugt so ausgebildet, dass bei waagerecht gehaltenem Gerät Wasser, das in den Ringspalt eintritt, wieder in den Tank zurückläuft. Hierzu kann zum Beispiel der Ringspalt in Richtung des Endes des Rohrstutzens im Durchmesser leicht erweitert ausgebildet sein. Auch im Rohrstutzen können zusätzliche Mittel vorgesehen sein, um Wasser aus dem Stutzen heraus zu leiten, das trotz aller Vorkehrungen eingetreten ist. Dies können zum Beispiel kleine Ablauflöcher sein, die Wasser wieder in den Tank zurückleiten. Auch ein umlaufender Ringspalt kann im Abluftkanal vorgesehen sein. Eventuelle Leckage-Luftströmungen können dabei in Kauf genommen werden, solange ein ausreichend großer Anteil an Luft abgesaugt wird.The annular gap is preferably designed so that, when the device is held horizontally, water which enters the annular gap flows back into the tank again. For this purpose, for example, the annular gap in the direction of the end of the pipe socket may be slightly widened in diameter. Also in the pipe socket additional means may be provided to direct water out of the nozzle, which has occurred despite all precautions. These can be, for example, small drain holes that return water back into the tank. A circumferential annular gap can also be provided in the exhaust air duct. Possible leakage air flows can be accepted, as long as a sufficiently large proportion of air is extracted.

Durch die beschriebene Ausgestaltung der Flüssigkeitssaugvorrichtung wird das Flüssigkeits-/Luftgemisch von dem Saugmund über den Ansaugkanal angesogen, und durch die Formgebung des Ansaugkanals, gegebenenfalls durch die Hilfe eines weiteren Strömungsleitprofils, auf die Abscheidevorrichtung gelenkt. Alternativ zur stehenden Prallplatte kann die Abscheidevorrichtung auch als Rotor ausgebildet sein, der dann als dynamische Abscheidevorrichtung fungiert.Due to the described embodiment of the liquid suction device, the liquid / air mixture is sucked from the suction port via the intake passage, and directed by the shape of the intake passage, optionally by the aid of another Strömungsleitprofils on the separation device. As an alternative to the stationary baffle plate, the separation device can also be designed as a rotor, which then functions as a dynamic separation device.

Wie auch bei den bekannten Flüssigkeitssaugvorrichtungen weist die Vorrichtung im vorderen Bereich eine Abziehlippe auf und ist bevorzugt als Einhandgerät ausgebildet. Hierzu weist das Gehäuse einen Griff auf, mit dem es gehalten ist, so dass es wie ein herkömmlicher Fensterwischer zum Beispiel an einer Glasscheibe entlang geführt werden kann, damit so die Flüssigkeit von dieser Glasscheibe abgezogen und gleichzeitig aufgesaugt werden kann.As with the known liquid suction devices, the device has a Abziehlippe in the front region and is preferably designed as a one-handed device. For this purpose, the housing has a handle with which it is held, so that it can be performed like a conventional window wiper, for example, along a glass so that the liquid can be removed from this glass and sucked up at the same time.

Hinter der Abziehlippe, in dem Bereich, in dem sich die Flüssigkeit sammelt, ist der Saugmund vorgesehen, der als Breitschlitzdüse ausgebildet sein kann. Eine typische Anwendung der Erfindung ist beispielsweise ein Fensterputzgerät, mit dem Wasser zur Reinigung des Fensters abgezogen und eingesagt werden kann. Hierzu kann neben der Sauglippe auch ein Schwamm angeordnet sein, der je nach Orientierung des Geräts anstelle der Abziehlippe an das Fenster angestellt werden kann, um so das Fenster zunächst nass zu reinigen. Hier kann zusätzlich auch eine Flüssigkeitszufuhr vorgesehen sein, über die manuell oder motorisch eine Reinigungsflüssigkeit vor die Abziehlippe oder den Schwamm oder auch direkt in den Schwamm gepumpt werden kann.Behind the Abziehlippe, in the area in which collects the liquid, the suction mouth is provided, which may be formed as a slot die. A typical application of the invention is, for example, a window cleaning device with which water can be withdrawn and filed for cleaning the window. For this purpose, in addition to the suction lip and a sponge may be arranged, which can be employed depending on the orientation of the device instead of the Abziehlippe to the window so as to first clean the window wet. Here, in addition, a liquid supply may be provided, via which a cleaning liquid can be pumped manually or by a motor before the Abziehlippe or sponge or directly into the sponge.

Bei einer alternativen Ausgestaltung der Erfindung kann die Abziehlippe auch gebogen oder V-förmig ausgebildet sein, so dass die abgezogene Flüssigkeit im mittleren Bereich gesammelt wird, wo dann ein anders geformter, beispielsweise punktuell wirkender, Saugmund die Flüssigkeit einsaugen kann. Diese Ausgestaltung wird sich insbesondere bei Geräten anbieten, die eine bewegliche Abziehlippe aufweisen, und insbesondere für den Boden oder sonstige horizontale Flächen vorgesehen sind.In an alternative embodiment of the invention, the Abziehlippe may also be bent or V-shaped, so that the withdrawn liquid is collected in the central region, where then a differently shaped, for example punctually acting, suction mouth can suck in the liquid. This embodiment will be particularly suitable for devices which have a movable Abziehlippe, and are provided in particular for the ground or other horizontal surfaces.

Von dem Saugmund führt ein Strömungsweg über den Ansaugkanal in die Hohlkammer und von dort über den Abluftkanal zu einem hinteren Auslass, aus dem die Luft, die in der Hohlkammer von der Flüssigkeit abgeschieden wurde, wieder austreten kann. Die Saugwirkung wird durch einen Rotor erzeugt, der (hier nicht näher beschrieben) einen die Strömung treibenden Unterdruck herstellt, so wie dies auch bei den bekannten Flüssigkeitssaugvorrichtungen der Fall ist. Dieser Rotor ist motorisch angetrieben, wobei der Motor bevorzugt über einen Akkumulator oder über Batterien gespeist wird, um eine Ortsunabhängigkeit zu gewährleisten.From the suction mouth, a flow path leads via the suction channel into the hollow chamber and from there via the exhaust air duct to a rear outlet, from which the air that has been separated from the liquid in the hollow chamber can escape again. The suction effect is generated by a rotor which produces (not described here in detail) a negative pressure driving the flow, as is the case with the known liquid suction devices. This rotor is driven by a motor, wherein the motor is preferably powered by a battery or batteries to ensure location independence.

Bei dieser Ausgestaltung wird der Flüssigkeits-/Luftstrom unmittelbar in den Tank gelenkt und sowohl beim Eintritt als auch beim Austritt aus dem Tank das Wasser abgeschieden wird. Durch diese Trennung der Abscheidemittel in eine vordere Abscheidevorrichtung und einen hinteren Spritzschutz kann effektiv das Wasser von der Luft separiert werden, ohne dass platzaufwändige Zwischenspeicher notwendig werden. Stattdessen kann der zur Verfügung stehende Raum unmittelbar für das Tankvolumen genutzt werden.In this embodiment, the liquid / air flow is directed directly into the tank and the water is separated both when entering and exiting the tank. By separating the separating agents into a front separating device and a rear splash guard, the water can be effectively separated from the air without the need for space-consuming temporary storage. Instead, the available space can be used directly for the tank volume.

Eine weitere bevorzugte Ausgestaltung der Erfindung weist eine Abscheidevorrichtung in Form eines bewegten Rotors auf. Hier treibt der Motor zum Antrieb des den Saugdruck erzeugenden Rotors bevorzugt auch die in Form eines vorderen Rotors ausgebildete Abscheidevorrichtung innerhalb der Hohlkammer an. Hierzu ist der Antriebsmotor zunächst mit dem zum Beispiel turbinenartig ausgebildeten Rotorrad des Saugaggregates verbunden und versetzt dieses in Drehung. Wie bei einem herkömmlichen Staubsauger entsteht hierdurch der Unterdruck, so dass Luft durch den Ansaugkanal, die Hohlkammer und den Abluftkanal durch das Gehäuse gefördert wird. Dieses Saugaggregat ist dann über eine weitere Antriebswelle mit dem vorderen Rotor, der hier als Abscheidevorrichtung fungiert, verbunden.A further preferred embodiment of the invention has a separation device in the form of a moving rotor. Here, the motor drives for driving the suction pressure generating rotor preferably also designed in the form of a front rotor deposition device within the hollow chamber. For this purpose, the drive motor is first connected to the turbine wheel designed, for example, the rotor wheel of the suction unit and offset this in rotation. As in the case of a conventional vacuum cleaner, this results in the negative pressure, so that air is conveyed through the housing through the intake duct, the hollow chamber and the exhaust air duct. This suction unit is then connected via a further drive shaft with the front rotor, which acts here as a separator.

Wesentliches Merkmal dieses Teilaspekts der Erfindung ist nun die Tatsache, dass das über den Ansaugkanal angesogene Flüssigkeits-/Luftgemisch nicht mehr ausschließlich auf ein abscheidendes Prallblech auftrifft, sondern auf den in der Hohlkammer angeordneten, motorisch bewegten Rotor. Gleichzeit bildet ein Bereich dieser Hohlkammer den Tank und auch die Abscheidekammer, innerhalb derer der Rotor für die Abscheidung der Flüssigkeit von dem Gemisch sorgt.An essential feature of this aspect of the invention is the fact that the liquid / air mixture sucked in via the intake duct no longer impinges exclusively on a separating baffle plate but on the motor-driven rotor arranged in the hollow chamber. At the same time, an area of this hollow chamber forms the tank and also the separation chamber, within which the rotor ensures the separation of the liquid from the mixture.

Zum Abscheiden der Flüssigkeit aus dem angesogenen Flüssigkeits-/Luftstrom weist der Rotor zumindest eine Aufprallfläche auf, auf die die Strömung gerichtet ist. Diese Aufprallfläche wird üblicherweise nicht unmittelbar mit der Strömung in Verbindung kommen, sondern als Strömungshindernis eine Richtungsumkehr für die Luftströmung verursachen, während die schwereren Flüssigkeitspartikel der Strömung auf die Aufprallfläche aufprallen bzw. aufgrund ihrer Trägheit in eine andere Richtung als die Luft gelenkt werden. So wird die Luft im Wesentlichen dem Unterdruck folgen und den kürzesten Strömungsweg nehmen.For separating the liquid from the aspirated liquid / air flow, the rotor has at least one impact surface on which the flow is directed. This impact surface will not usually come into direct contact with the flow, but as a flow obstacle cause a reversal of direction for the air flow, while the heavier fluid particles of the flow impinge on the impact surface or due to their inertia are directed in a direction other than the air. Thus, the air will essentially follow the vacuum and take the shortest flow path.

Die Flüssigkeit dagegen wird aufgrund ihrer höheren Trägheitskräfte nicht so schnell umgelenkt und daher eine Bahnkurve mit größeren Radien beschreiben. Dies führt zum einen dazu, dass die beiden Medien unterschiedlichen Strömungspfaden folgen, und zum dazu dass die Flüssigkeit aufgrund des größeren benötigten Strömungsradius gegen Seitenwände oder auf den Rotor selbst prallt. Letzteres wiederum führt dazu, dass die Flüssigkeit von dem Luftstrom getrennt wird und in dem ringförmigen Hohlraum, der den Ansaugkanal, die Abscheidekammer und den Abluftkanal umgibt, gesammelt wird.The liquid, on the other hand, is not deflected so quickly because of its higher inertial forces and therefore describes a trajectory with larger radii. On the one hand, this leads to the fact that the two media follow different flow paths and, in addition, because of the larger required flow radius, the liquid impinges against side walls or onto the rotor itself. The latter, in turn, causes the liquid to be separated from the air stream and collected in the annular cavity surrounding the suction channel, the deposition chamber and the exhaust channel.

Aufgrund der Tatsache, dass die Aufprallfläche nun außerhalb des Ansaugkanals liegt, kann das Rotorrad einen wesentlich größeren Durchmesser aufweisen als der Innendurchmesser des Ansaugkanals. Damit die Aufprallfläche von der Strömung getroffen wird, können Strömungsleitprofile im Ansaugkanal oder kurz dahinter angeordnet sein, die die Strömung auf die Aufprallfläche umlenken.Due to the fact that the impact surface is now outside the intake passage, the rotor wheel may have a substantially larger diameter than the inner diameter of the intake passage. So that the impact surface is hit by the flow, flow guide profiles can be arranged in the intake channel or shortly behind it, which deflect the flow onto the impact surface.

Bevorzugt wird ein Strömungsleitprofil verwendet, das beispielsweise glockenartig oder kegelförmig ausgebildet sein kann, wobei die Spitze im Ansaugkanal angeordnet ist und der sich nach hinten erweiternde Teil die Strömung nach außen umlenkt. Diese Strömung trifft dann im äußeren Bereich auf die ringförmige Aufprallfläche, wobei die Flüssigkeitsbestandteile dann durch das rotierende Rotorrad beschleunigt und in den äußeren Bereich der Hohlkammer geschleudert werden. Von der inneren Außenwand werden sie dann nach unten ablaufen, wobei das Gerät in Betriebsstellung üblicherweise so gehalten wird, dass die Abziehlippe oben ist und sich rund um den Abluftkanal die abgeschiedene Flüssigkeit befindet.Preferably, a Strömungsleitprofil is used, which may be formed, for example, bell-shaped or cone-shaped, wherein the tip is arranged in the intake passage and the rearwardly widening portion deflects the flow to the outside. This flow then impinges in the outer region on the annular impact surface, wherein the liquid components are then accelerated by the rotating rotor wheel and thrown into the outer region of the hollow chamber. From the inner outer wall, they will then drain down, the device is usually held in the operating position so that the Abziehlippe is up and around the exhaust duct, the separated liquid.

Das Gehäuse kann zweiteilig ausgebildet sein, so dass sich z.B. die Hohlkammer zusammen mit dem gesamten Tank herausnehmen lässt. Hierzu kann zum Beispiel vorgesehen sein, dass die Hohlkammer als separates, zum Beispiel zylindrisches, Bauteil ausgebildet ist, das auf den Abluftkanal bzw. den Zuluftkanal aufsteckbar ist, wobei die Trennebene des Gehäuses im Bereich der Hohlkammer liegt. Bevorzugt wird das Gehäuse mit einem Sicherheitsschalter versehen, der bei Öffnen des Gehäuses den Motor abschaltet bzw. ein Einschalten des Motors durch Unterbrechung der Stromzufuhr verhindert. Alternativ kann die Hohlkammer auch von dem Gehäuse selbst gebildet sein, so dass die Innenseite eines Abschnittes des Gehäuses die Außenseite der Hohlkammer bildet. In diesem Fall sind im Gehäuse zwei Trennwände vorgesehen, von denen eine einen Durchlass für den Ansaugkanal und eine einen Durchlass für den Abluftkanal aufweist.The housing may be formed in two parts, so that, for example, the hollow chamber can be taken out together with the entire tank. For this purpose, for example, be provided that the hollow chamber is formed as a separate, for example cylindrical, component which can be plugged onto the exhaust air duct or the supply air duct, wherein the parting plane of the housing is in the region of the hollow chamber. Preferably, the housing is provided with a safety switch, which shuts off the engine when opening the housing or prevents switching on the motor by interrupting the power supply. Alternatively, the hollow chamber may also be formed by the housing itself, so that the inside of a section of the housing forms the outside of the hollow chamber. In this case, two partitions are provided in the housing, one of which has a passage for the intake passage and a passage for the exhaust air passage.

Bei der zweiteiligen Ausführung des Gehäuses kann dieses dann zum Entleeren oder Reinigen geöffnet werden. Am vorderen Gehäuseteil kann zum Beispiel der Zuführkanal vorgesehen sein, der mit dem vorderen Gehäuseteil von dem übrigen Gehäuse aus der Hohlkammer herausgezogen wird. Ringförmige Dichtungen können den Ansaugkanal abdichten, so dass dieser zwar einerseits mit dem vorderen Gehäuseteil herausziehbar, andererseits aber auch dichtend zusammensetzbar ist. Ist der vordere Gehäuseteil abgenommen, kann dann die Hohlkammer als hohlzylindrisches Bauteil von dem Abluftkanal abgezogen werden, der seinerseits wiederum über Ringdichtungen abgedichtet sein kann.In the case of the two-part design of the housing, this can then be opened for emptying or cleaning. At the front housing part, for example, the feed channel may be provided, which is pulled out of the hollow chamber with the front housing part of the remaining housing. Annular seals can seal off the intake passage so that, while it can be pulled out, on the one hand, with the front housing part, on the other hand, it can also be put together in a sealing manner. If the front housing part removed, then the hollow chamber can be deducted as a hollow cylindrical member of the exhaust duct, which in turn can be sealed by ring seals.

Die oben genannte Ausgestaltung ermöglicht es, das Gehäuse und sinnvollerweise auch die Hohlkammer selbst zu zerlegen und zu reinigen. Hierzu kann die Hohlkammer ihrerseits wiederum zweiteilig ausgebildet sein, so dass sie sich in zwei Gehäusehälften zerlegen lässt. Der die Abscheidevorrichtung bildende Rotor kann ebenfalls abnehmbar ausgebildet sein, so dass auch dieser leicht gereinigt werden kann. Sofern der den Hohlraum bildende zylindrische Körper zweiteilig ausgebildet ist, müssen natürlich die beiden Teile auch über Dichtungen miteinander verbunden sein, so dass bei liegendem Gerät keine Flüssigkeit aus dem Hohlraum austreten kann.The above-mentioned embodiment makes it possible to disassemble and clean the housing and usefully also the hollow chamber itself. For this purpose, the hollow chamber in turn may be formed in two parts, so that they can be disassembled into two housing halves. The separator forming the rotor may also be designed to be removable, so that this can be easily cleaned. If the hollow body forming the cylindrical body is formed in two parts, of course, the two parts must also be connected to each other via seals, so that when lying device no liquid can escape from the cavity.

Ein Merkmal ist nämlich die Tatsache, dass die Flüssigkeit, die sich im Flüssigkeits-/Luftstrom befindet, über den Rotor nach außen geschleudert wird bzw. vom Luftstrom separiert wird, so dass sich Flüssigkeit dann in dem als Tank dienenden Hohlraum ansammeln kann, um später ausgeleert zu werden. Da die Flüssigkeitssaugvorrichtung in den meisten Fällen als Handgerät ausgebildet sein wird, das wie ein Fensterabzieher auch in Querlage oder gar über Kopf verwendet wird, ist es wichtig, dass die Flüssigkeit nicht durch den Ansaugkanal wieder auslaufen kann. Aus diesem Grund ragt der Ansaugkanal mit einem Rohrstutzen in den Hohlraum hinein, so dass selbst bei Überkopfposition Flüssigkeit rund um diesen Ansaugstutzen im Tank verbleibt und nicht aus dem Ansaugkanal herausläuft.Namely, one feature is the fact that the liquid that is in the liquid / air stream is thrown outward over the rotor or is separated from the air stream, so that liquid can then accumulate in the cavity serving as a tank to later to be evacuated. Since the Flüssigkeitsssaugvorrichtung will be designed in most cases as a handheld device, which is used as a window puller in a transverse position or even over the head, it is important that the liquid can not leak through the intake again. For this reason, the suction duct protrudes into the cavity with a pipe socket, so that even in the overhead position, liquid remains around this intake pipe in the tank and does not run out of the suction duct.

Gleiches gilt dann, wenn das Gerät in aufrechter Position verwendet wird, also die Ansauglippe oben angeordnet ist. Hier ragt dann der Stutzen des Ablaufkanals in den Hohlraum hinein, so dass sich rund um den Stutzen dieses Ablaufkanals wiederum ein Hohlraum ergibt, in dem Flüssigkeit gesammelt werden kann, ohne dass diese durch den Abluftkanal nach unten ablaufen könnte. Zusammenfassend ist also der Tank von einem Bereich der Hohlkammer gebildet, in den von oben und unten jeweils stutzenartig der Ansaugkanal und der Abluftkanal eingeführt sind, so dass aufgrund der stutzenartig hineinragenden Kanalenden bei allen Orientierungen des Gerätes sichergestellt ist, dass die vom Luftstrom separierte Flüssigkeit nicht wieder auslaufen kann. Diese Funktion kann durch einen sich in Richtung des Inneren der Hohlkammer leicht erweiternden Querschnitt des Ansaugkanals bzw. des Ablaufkanals verstärkt werden.The same applies if the device is used in an upright position, ie the suction lip is arranged at the top. Here then projects the neck of the drainage channel into the cavity, so that around the neck of this drainage channel in turn results in a cavity in which liquid can be collected without this could run down through the exhaust duct. In summary, therefore, the tank is formed by a region of the hollow chamber in which the suction channel and the exhaust duct are introduced from above and below, so that is ensured due to the nozzle-like projecting channel ends in all orientations of the device that the liquid separated from the air flow not can run out again. This function can be enhanced by a cross section of the intake duct or of the drainage channel that widens slightly in the direction of the interior of the hollow chamber.

Zum Entleeren des Gerätes bestehen grundsätzlich mehrere Möglichkeiten. Zum einen kann der den Tank bildende Hohlraum über einen Stöpsel verschlossen sein, der einen Weg nach außen freigibt. Hier ist also ein Entleerungskanal mit dem Hohlraum verbunden, über den das Gerät entleert werden kann. Zum anderen kann über die oben bereits beschriebene Reinigungsfunktion durch die Zweiteilung des Gehäuses und auch des Hohlraumes eine Entleerung erfolgen. Hierzu wird einfach das Gerät wie bereits beschrieben auseinandergenommen, und die Hälfte des Hohlraumes nach dessen Zerlegen ausgeleert.There are basically several options for emptying the device. On the one hand, the cavity forming the tank can be closed by means of a stopper, which provides a way to the outside releases. So here is an emptying channel connected to the cavity through which the device can be emptied. On the other hand can be done via the above-described cleaning function by the division of the housing and the cavity emptying. For this purpose, the device is simply taken apart as already described, and emptied half of the cavity after its disassembly.

Eine dritte Möglichkeit der Entleerung besteht darin, dass der Ansaugkanal oder der Abluftkanal verschiebbar im Gehäuse gelagert sind, so dass sich eines der beiden Teile jeweils herausziehen lässt, bis kein Rohrstutzen mehr in den Hohlraum hineinragt. Auf diese Weise kann zum Beispiel das Gerät auf den Kopf gestellt werden und der Ansaugkanal, der zum Beispiel mit der Abziehlippe fest verbunden sein kann, nach vorne herausgezogen werden. Dadurch, dass durch dieses Herausziehen der in den Hohlraum hineinragende Rohrstutzen entfällt, wird der Strömungswiderstand aufgehoben und die im Hohlraum befindliche Flüssigkeit kann herauslaufen.A third possibility of emptying is that the intake duct or the exhaust duct are slidably mounted in the housing, so that one of the two parts can each pull out until no pipe socket protrudes into the cavity. In this way, for example, the device can be turned upside down and the suction channel, which can be firmly connected to the Abziehlippe example, be pulled forward. Due to the fact that this eliminates the pipe socket projecting into the cavity, the flow resistance is canceled and the liquid in the cavity can run out.

Über elektrische Kontakte kann sichergestellt sein, dass das Gerät seine Saugfunktion nur dann aufnehmen kann, wenn sich der Ansaugkanal in der richtigen Position befindet, also in der eingeschobenen Position. Hierzu können einfache Kontakte am Ansaugkanal vorgesehen sein, die den durch den motorischen Antrieb des Saugaggregates herausgezogenen Ansaugkanal unterbrechen. Auf gleiche Weise kann eine Entleerungsfunktion auf Seiten des Abluftkanals realisiert werden, wobei dann die Flüssigkeit durch den herausgezogenen Abluftkanal entleert werden kann.By means of electrical contacts it can be ensured that the device can only absorb its suction function when the intake duct is in the correct position, ie in the inserted position. For this purpose, simple contacts may be provided on the intake passage, which interrupt the suction channel pulled out by the motor drive of the suction unit. In the same way, a discharge function can be realized on the part of the exhaust duct, in which case the liquid can be emptied through the extracted exhaust duct.

Sowohl auf Seiten des Abluftkanals als auch auf Seiten des Ansaugkanals können zusätzliche Ventilmittel vorgesehen sein, die zum Beispiel als reine Klappen den Abluftkanal oder den Ansaugkanal zusätzlich abschotten können, wenn Flüssigkeit aufgrund einer ungünstigen Drehung des Gerätes auszutreten droht.Additional valve means can be provided both on the exhaust duct side and on the intake duct side, which, for example, can additionally seal off the exhaust duct or the intake duct as pure flaps if liquid threatens to escape due to an unfavorable rotation of the apparatus.

Günstig ist die Tatsache, dass der Ansaugkanal von der Abziehlippe kommend mit seinem Rohrstutzen in den Hohlraum hineinragt, während gegenüberliegend der Abluftkanal ebenfalls in den Hohlraum hineinragt. Zwischen den beiden Rohrstutzen entsteht ein Spalt, in dem der Rotor angeordnet ist, der hier als Abscheidevorrichtung fungiert. Der Flüssigkeits-/Luftstrom trifft auf diesen Rotor, wobei zwischen dem Ansaugkanal und dem Rotor ein Spalt vorgesehen ist, der einerseits klein genug ist, um den Saugdruck aufrechtzuerhalten, und zum anderen groß genug ist, um ohne große Leistungsverluste den Flüssigkeits-/Luftstrom durch das Gerät zu fördern.It is favorable that the intake channel coming from the Abziehlippe protrudes with its pipe socket into the cavity, while opposite the exhaust duct also protrudes into the cavity. Between the two pipe sockets creates a gap in which the rotor is arranged, which acts here as a separator. The liquid / air flow impinges on this rotor, wherein between the intake passage and the rotor, a gap is provided, which on the one hand is small enough to maintain the suction pressure, and on the other hand is large enough, without large power losses, the liquid / air flow through to promote the device.

Durch den drehenden Rotor wird die Flüssigkeit, die infolge der Trägheit auf den Rotor auftrifft oder von dem Rotor abgelenkt wird, in den äußeren Bereich des Hohlraumes gefördert, während die wesentlich weniger träge Luft durch den Unterdruck, der infolge des Saugaggregates am Abluftkanal anliegt, aus dem Hohlraum herausgesogen wird. Grundsätzlich kann zum Beispiel der in den Hohlraum hineinragende Stutzen des Abluftkanals über seinen Umfang eine Lufteintrittsöffnung aufweisen, so dass die Luft aus dem Hohlraum abgesaugt werden kann.By the rotating rotor, the liquid which impinges on the rotor due to the inertia or is deflected by the rotor, promoted in the outer region of the cavity, while the much less inertial air by the negative pressure applied by the suction unit at the exhaust duct, from is sucked out of the cavity. Basically, for example, in the Cavity projecting nozzle of the exhaust duct over its circumference have an air inlet opening, so that the air can be sucked out of the cavity.

Eine weitere bevorzugte Ausgestaltung weist dagegen einen Rotor auf, der in der Mitte durchlässig ist und unmittelbar vor dem in den Hohlraum ragenden Stutzen des Abluftkanals angeordnet ist. Bei dieser Ausgestaltung verläuft die Antriebswelle für den Rotor durch den Abluftkanal, so dass der Rotor und die Antriebswelle konzentrisch zum zylindrischen Antriebskanal angeordnet sind. Damit die Abscheidefunktion gewährleistet ist, kann bei dieser Ausgestaltung im Ansaugkanal ein Strömungsleitprofil vorgesehen sein, das die Strömung aus dem Ansaugkanal nach außen leitet. Der Rotor weist, die Öffnung für den Eintritt in den Abluftkanal umgebend, einen Rohrstutzen auf, der in das hier glockenartig oder kegelförmig ausgebildete Strömungsleitprofil hineinragt.In contrast, a further preferred embodiment has a rotor which is permeable in the middle and is arranged directly in front of the connecting piece of the exhaust air duct projecting into the cavity. In this embodiment, the drive shaft for the rotor extends through the exhaust air duct, so that the rotor and the drive shaft are arranged concentrically to the cylindrical drive channel. In order for the separation function to be ensured, a flow-guiding profile can be provided in the intake channel in this embodiment, which guides the flow out of the intake channel to the outside. The rotor has, surrounding the opening for the entry into the exhaust duct, a pipe socket which projects into the here bell-shaped or cone-shaped flow guide.

Zwischen diesem Rohrstutzen an dem Rotor und dem Strömungsleitprofil verbleibt ein kleiner Spalt, durch den die Luft nach mehrfacher Richtungsumkehr in den Abluftkanal gelangen kann, während die Flüssigkeit auf die Aufprallfläche des Rotors auftritt oder von einer Luftströmung, die nahe der Aufprallfläche aufgrund der Bewegung des Rotors nach außen gerichtet ist, in den Hohlraum gefördert wird. Letztlich ist es nicht erheblich, ob ein Teil der Luft zusammen mit der Flüssigkeit in den Hohlraum gefördert wird, solange durch die Geometrie des Abluftkanals bzw. des Lufteintritts in den Abluftkanal sichergestellt ist, dass über den Ansaugkanal angesaugte Luft ohne die parallel angesaugte Flüssigkeit durch den Abluftkanal wieder abgesaugt wird.Between this pipe stub on the rotor and the Strömungsleitprofil remains a small gap through which the air can pass into the exhaust duct after multiple reversal of direction, while the liquid occurs on the impact surface of the rotor or an air flow close to the impact surface due to the movement of the rotor directed to the outside, is conveyed into the cavity. Ultimately, it is not significant whether a part of the air is conveyed together with the liquid in the cavity, as long as ensured by the geometry of the exhaust duct or the air inlet into the exhaust duct that aspirated via the intake air without the liquid sucked parallel through the Exhaust duct is sucked off again.

Eine weitere Ausgestaltung der Erfindung weist eine Abziehlippe auf, die zusammen mit dem Saugmund als separates Bauteil ausgebildet und in das Gerät eingesteckt ist, wobei der Saugmund über eine dichtende Rohrsteckverbindung mit dem Ansaugkanal verbunden ist. Diese Ausgestaltung hat den Vorteil, dass die Funktionseinheit, die von der Abziehlippe und dem Saugmund gebildet wird, vollständig abgenommen werden und über einen Schlauch mit dem Gerät verbunden werden kann. Dies ermöglicht es, diese Funktionseinheit an einem Stiel oder auch einem Schlauch zu befestigen, und so einen leichten Abzieher mit Absaugfunktion zu schaffen, während das übrige Gerät entweder zum Beispiel an einem Tragegurt von dem Bediener getragen wird oder als Standgerät auf dem Boden liegt. Im Falle des Stieles ist dieser mit einem Absaugkanal versehen und kann mit dem Gerät an einer Seite und der Einheit aus Abziehlippe und Saugmund an der anderen Seite verbunden werden, so dass über den Absaugkanal oder -schlauch das Wasser vor dem Saugmund an- und aufgesogen werden kann.A further embodiment of the invention has a Abziehlippe, which is formed together with the suction mouth as a separate component and inserted into the device, wherein the suction port is connected via a sealing pipe plug connection with the intake passage. This embodiment has the advantage that the functional unit, which is formed by the Abziehlippe and the suction mouth, are completely removed and can be connected via a hose to the device. This makes it possible to attach this functional unit to a stick or a hose, and thus to provide a light puller with suction, while the rest of the device is either worn on a strap for example by the operator or as a floor standing on the ground. In the case of the stem, this is provided with a suction channel and can be connected to the device on one side and the unit of Abziehlippe and suction mouth on the other side, so that on the suction channel or hose, the water in front of the suction mouth and are sucked can.

Alternativ oder auch zusätzlich kann auch nur die Abziehlippe abnehmbar ausgebildet sein. Dies ermöglicht es, die Abziehlippe unabhängig von dem Gerät zu benutzen, wenn die Saugfunktion nicht benötigt wird.Alternatively or additionally, only the Abziehlippe can be made removable. This makes it possible to use the Abziehlippe independently of the device when the suction function is not needed.

Schließlich kann das Gehäuse, insbesondere an der, dem Saugmund gegenüberliegenden Rückseite, eine Aufnahme für einen Stiel aufweisen. Dies ist bevorzugt eine Universalaufnahme für Stiele von Haushaltsgeräten, die ohnehin im Haushalt vorhanden sind. In diesem Fall kann der Stiel, der auch als Teleskopstiel ausgebildet sein kann, einfach an dem Gehäuse befestigt werden. Auch auf diese Weise kann die Reichweite des Benutzers leicht und einfach erhöht werden.Finally, the housing, in particular at the, opposite the suction mouth back, have a receptacle for a stem. This is preferably a universal receptacle for stems of household appliances, which are already present in the household anyway. In this case, the stem, which may also be formed as a telescopic handle, are easily attached to the housing. Also in this way, the range of the user can be easily and simply increased.

Die Abziehlippe und optional auch der Saugmund können auch dreh- oder schwenkbar am Gehäuse befestigt sein, wobei dies zum Beispiel über ein dichtendes Kugelgelenk erfolgen kann, das in der Verbindung zwischen dem Gehäuse und der die Abziehlippe und den Saugmund aufweisenden Einheit angeordnet ist. Dieses Kugelgelenk kann so ausgebildet sein, dass der Ansaugkanal durch das Gelenk hindurchgeführt ist. Alternativ kann der Ansaugkanal auch in Schlauchform seitlich an dem Gelenk vorbeigeführt sein.The Abziehlippe and optionally also the suction mouth can also be mounted rotatably or pivotally on the housing, which can be done for example via a sealing ball joint, which is arranged in the connection between the housing and the Abziehlippe and the suction mouth having unit. This ball joint can be designed so that the intake passage is passed through the joint. Alternatively, the suction channel can also be guided laterally past the joint in the form of a tube.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels anhand der Zeichnungen.Further features and advantages of the invention will become apparent from the following description of a preferred embodiment with reference to the drawings.

In den Zeichnungen zeigt:

Figur 1
eine erfindungsgemäße Flüssigkeitssaugvorrichtung in einer Draufsicht, teilweise im Schnitt,
Figur 2
die in Figur 1 dargestellte Flüssigkeitssaugvorrichtung in einer Seitenansicht im Schnitt mit einer ersten Ausgestaltung der Abscheidevorrichtung,
Figur 3
die in Figur 1 dargestellte Flüssigkeitssaugvorrichtung in einer Seitenansicht im Schnitt mit einer zweiten Ausgestaltung der Abscheidevorrichtung und
Figur 4
den Bereich des Rotors der in Figur 3 dargestellten Flüssigkeitssaugvorrichtung in einer vergrößerten Darstellung.
In the drawings shows:
FIG. 1
a liquid suction device according to the invention in a plan view, partly in section,
FIG. 2
in the FIG. 1 1 in a side view in section with a first embodiment of the separation device,
FIG. 3
in the FIG. 1 shown liquid suction in a side view in section with a second embodiment of the separator and
FIG. 4
the area of the rotor of in FIG. 3 shown liquid suction in an enlarged view.

In Figur 1 ist eine erfindungsgemäße Flüssigkeitssaugvorrichtung dargestellt. In der Darstellung ist der obere Bereich ungeschnitten, der untere Bereich geschnitten dargestellt, wobei aus Gründen der Übersichtlichkeit auf die Darstellung der Schnittkanten des Gehäuses 1 verzichtet wurde.In FIG. 1 a liquid suction device according to the invention is shown. In the illustration, the upper area is uncut, the lower area shown in section, wherein for reasons of clarity on the representation of the cut edges of the housing 1 has been omitted.

Das Gerät weist im vorderen Bereich eine Abziehlippe 7 auf, die Flüssigkeit von einer Fläche abzuziehen vermag. Der klassische Anwendungsfall dieser Vorrichtung ist das Abziehen von Wasser von einer Fensterfläche. Hinter der Abziehlippe 7 ist ein Saugmund 5 angeordnet, der hier als breite Düse ausgebildet ist, deren Breite im Wesentlichen der Breite der Abziehlippe 7 entspricht. Über einen Ansaugkanal 4 wird das Flüssigkeits-/Luftgemisch in eine Hohlkammer 2 eingesogen, wobei in der Hohlkammer 2 ein Abscheideraum 8 mit einer Abscheidevorrichtung vorgesehen ist, die die Flüssigkeit von dem Luftstrom zu trennen vermag.The device has in the front region a Abziehlippe 7, which is able to extract liquid from a surface. The classic application of this device is the removal of water from a window surface. Behind the Abziehlippe 7 a suction mouth 5 is arranged, which is here designed as a wide nozzle whose width substantially corresponds to the width of the Abziehlippe 7. Via a suction channel 4, the liquid / air mixture is sucked into a hollow chamber 2, wherein in the hollow chamber 2, a separation chamber 8 is provided with a separation device which is able to separate the liquid from the air flow.

Die weitere Funktion der Vorrichtung wird anhand der Schnittansicht in den Figuren 2 und 3 sowie der Detailansicht in Figur 3 nachfolgend genauer beschrieben:The further function of the device is based on the sectional view in the FIGS. 2 and 3 as well as the detailed view in FIG. 3 described in more detail below:

In dem Gehäuse 1 ist als zentrales, tankartiges Bauteil die Hohlkammer 2 vorgesehen. Diese Hohlkammer 2 kombiniert verschiedene Funktionen der Flüssigkeitssaugvorrichtung miteinander. Zum einen ist sie der Tank, in den abgeschiedene Flüssigkeit gesammelt werden kann, die aus dem Flüssigkeits-/Luftgemisch separiert wurde. Zum anderen ist hier auch der Abscheideraum 8 integriert, in dem die Trennung der Luft von der Flüssigkeit stattfindet. Schließlich bildet die Hohlkammer 2 einen Schutz vor dem Wiederauslaufen der abgeschiedenen Flüssigkeit.In the housing 1, the hollow chamber 2 is provided as a central, tank-like component. This hollow chamber 2 combines different functions of the Flüssigkeitsssaugvorrichtung together. First, it is the tank into which separated liquid can be collected, which has been separated from the liquid / air mixture. On the other hand, the separation chamber 8 is also integrated here, in which the separation of the air from the liquid takes place. Finally, the hollow chamber 2 forms a protection against re-leakage of the deposited liquid.

In die Hohlkammer 2 ragen jeweils mit einem Rohrstutzen der Abluftkanal 3 sowie der Ansaugkanal 4. Diese beiden Kanäle sind konzentrisch zueinander angeordnet und laufen aufeinander zu, wobei zwischen den Enden der beiden Kanäle die Abscheidevorrichtung 13 angeordnet ist.In the hollow chamber 2 each project with a pipe socket of the exhaust duct 3 and the intake passage 4. These two channels are arranged concentrically to each other and run towards each other, wherein between the ends of the two channels, the separation device 13 is arranged.

Figur 2 zeigt eine erste Ausgestaltung der Erfindung mit einer starren Abscheidevorrichtung 13, die hier als Stator ausgebildet ist und die Strömung radial nach außen in den Tank umlenkt. FIG. 2 shows a first embodiment of the invention with a rigid separator 13, which is designed here as a stator and deflects the flow radially outward into the tank.

Im hinteren Bereich des Tanks ragt der Abluftkanal 3 mit einem Ansaugstutzen 11 in den Tank hinein. Damit kein Spritzwasser in den Abluftkanal 3 hineingerät ist der rohrstutzenartig ausgebildete Abluftkanal 3 mit einem Strömungslabyrinth 12 versehen, dass, wie aus dem die Luftströmung schematisch andeutenden Pfeil ersichtlich ist, eine doppelte Richtungsumkehr der Strömung erzwingt und damit restliches Wasser von der Luft abscheidet, dass im Tank zurückbleibt.In the rear of the tank, the exhaust duct 3 protrudes with an intake 11 into the tank. In order that no spray water is taken into the exhaust air duct 3, the exhaust pipe channel 3 is provided with a flow labyrinth 12, that, as can be seen from the arrow schematically indicating the air flow, forces a double reversal of direction of the flow and thus separates residual water from the air that in Tank remains.

Bei der in Figur 3 dargestellten Ausführungsform ist in dem Spalt zwischen Ablaufkanal 3 und Ansaugkanal 4 verbleibt, in dem ein Rotor 6 angeordnet ist. Dieser Rotor 6 wiederum wird über eine Antriebswelle 9 angetrieben, wobei die Antriebswelle 9 konzentrisch zum Abluftkanal 3 angeordnet ist. Der Rotor 6 ragt mit Aufprallflächen seitlich über den Abluftkanal 3 hinaus in die Hohlkammer 2 hinein.At the in FIG. 3 illustrated embodiment is in the gap between the drain passage 3 and intake passage 4 remains, in which a rotor 6 is arranged. This rotor 6 in turn is driven via a drive shaft 9, wherein the drive shaft 9 is arranged concentrically to the exhaust air duct 3. The rotor 6 protrudes with impact surfaces laterally beyond the exhaust air duct 3 into the hollow chamber 2.

Im Endbereich weist der Abluftkanal 3 ein Strömungsleitprofil 10 auf, das hier die Form eines innen hohlen Kegelstumpfes aufweist. Dieser Kegelstumpf leitet die angesaugte Mischung aus Wasser und Luft im Ansaugkanal 4 nach außen ab, so dass diese auf den äußeren Bereich des Rotors 6, der hier die Aufprallfläche bildet, trifft. Dies bewirkt, dass der angesaugte Flüssigkeits-/Luftstrom in radialer Richtung und auch in Umfangsrichtung des Rotors 6 beschleunigt wird, wobei die trägere Flüssigkeit eine andere Bahnkurve beschreibt als die leichtere Luft.In the end region of the exhaust duct 3 has a flow guide 10, which here has the shape of an internally hollow truncated cone. This truncated cone derives the aspirated mixture of water and air in the intake duct 4 to the outside, so that it meets the outer region of the rotor 6, which forms the impact surface here. This causes the sucked liquid / air flow in radial direction and also in the circumferential direction of the rotor 6 is accelerated, wherein the carrier liquid describes a different trajectory than the lighter air.

Wie aus Figur 3 zu erkennen ist, befinden sich der Motor und das Saugaggregat im hinteren Bereich des Gehäuses 1, in dem auch die Energieversorgung in Form eines Akkus angeordnet ist. Dies bewirkt, dass der Schwerpunkt des Gerätes nach hinten verlagert ist, so dass es sich besonders leicht in aufrechter Position längs einer Scheibe oder einer sonstigen Fläche bewegen lässt.How out FIG. 3 can be seen, are the engine and the suction unit in the rear of the housing 1, in which the power supply is arranged in the form of a battery. This causes the center of gravity of the device to be displaced to the rear so that it can be easily moved in an upright position along a disk or other surface.

Im vorderen Bereich ist die Abziehlippe 7 angeordnet, hinter der der Saugmund 5 vorgesehen ist. Von hier aus verläuft der Strömungskanal durch den Ansaugkanal 4 in die Hohlkammer 2. Das Gehäuse weist an seiner, dem Saugmund gegenüber liegenden Rückseite eine Aufnahmebuchse 14 für einen Stiel auf, in die ein Stiel einsteckbar ist und in der der Stiel über einen Reib- oder Formschluss befestigbar ist.In the front region of the Abziehlippe 7 is arranged, behind which the suction mouth 5 is provided. From here, the flow channel through the intake passage 4 into the hollow chamber 2. The housing has on its, the suction mouth opposite back a receiving socket 14 for a stem, in which a stem can be inserted and in which the stem via a friction or Form fit is fastened.

In Figur 4 ist der Bereich des Rotors 6 innerhalb der Hohlkammer 2 nochmals in vergrößerter Darstellung wiedergegeben. Wie dargestellt, ragt der Rotor 6 in das Strömungsleitprofil 10 hinein. Hierzu weist er einen ringförmigen Rohrstutzen auf, der von dem Rotorrad 6 nach vorne gerichtet in Richtung des Ansaugkanals 4 hervorspringt.In FIG. 4 is the area of the rotor 6 within the hollow chamber 2 again shown in an enlarged view. As shown, the rotor 6 protrudes into the flow guide 10. For this purpose, it has an annular pipe socket, which projects from the rotor wheel 6 toward the front in the direction of the intake duct 4.

Zwischen diesem Bereich des Rotors 6 und dem Strömungsleitprofil 10 verbleiben kleine Spalten, so dass sich eine Labyrinth-Dichtung ergibt, durch die die abzusaugende Luft den inneren Pfeilen folgend, zunächst an der Außenseite des Strömungsleitprofiles 10 nach außen strömt, anschließend eine enge Kurve nach innen beschreibend in das Innere des Strömungsleitprofiles 10 gesogen wird und von dort durch das innen hohle Rotorrad 6 in den Abluftkanal 3 gesogen wird. Eine derart enge Bahnkurve kann die trägere Flüssigkeit nicht vollziehen und wird daher den äußeren Pfeilen folgend radial und in Umfangsrichtung des Rotorrades nach außen gefördert. Dies führt dazu, dass sich die Flüssigkeit in der Hohlkammer 2, insbesondere an der Innenwandung sammelt und bei aufrechtem Gerät in den unteren Bereich der Hohlkammer 2 fließt, der dann als Tank dient.Between this area of the rotor 6 and the flow guide 10 remain small gaps, so that there is a labyrinth seal through which the air to be sucked following the inner arrows, first flows to the outside of the Strömungsleitprofiles 10 to the outside, then a tight curve inwards descriptively sucked into the interior of the Strömungsleitprofiles 10 and is sucked from there through the hollow wheel inside the rotor 6 in the exhaust duct 3. Such a narrow trajectory can not carry out the carrier liquid and is therefore conveyed radially outwards in accordance with the outer arrows and outwards in the circumferential direction of the rotor wheel. As a result, the liquid collects in the hollow chamber 2, in particular on the inner wall, and flows in an upright device into the lower region of the hollow chamber 2, which then serves as a tank.

Die dargestellte Ausführungsform der Flüssigkeitssammelvorrichtung ist nur eine denkbare Möglichkeit, vom erfindungsgemäßen Grundprinzip Gebrauch zu machen. Wesentlich an der Erfindung ist die Tatsache, dass keine separate Abscheidekammer mehr vorgesehen ist und dass der Flüssigkeits-/Luftstrom unmittelbar auf ein Rotorrad 6 gelenkt wird, das infolge seiner Rotation die unterschiedlichen dynamischen Trägheiten von Luft und Flüssigkeit ausnutzt, um beide Ströme voneinander zu trennen. Ferner kann das Rotorrad 6 wie dargestellt über eine Antriebswelle 9 durch den Abluftkanal 3 angetrieben sein, wobei es alternativ natürlich auch möglich ist, dass das Rotorrad 6 durch einen separaten Antrieb angetrieben ist.The illustrated embodiment of the fluid collection device is just one possible way to make use of the basic principle of the invention. Essential to the invention is the fact that no separate Abscheidekammer is provided and that the liquid / air flow is directed directly to a rotor wheel 6, which exploits the different dynamic inertias of air and liquid due to its rotation to separate the two streams from each other , Furthermore, as illustrated, the rotor wheel 6 can be driven via a drive shaft 9 through the exhaust air duct 3, it being alternatively also possible, of course, for the rotor wheel 6 to be driven by a separate drive.

In der Hohlkammer 2 kann ein Füllstandsensor vorgesehen sein, der beispielsweise von einem elektrischen Kontakt gebildet sein kann und den Motor abschaltet, wenn ein bestimmter Flüssigkeitspegel erreicht ist, jenseits dessen es nicht mehr gewährleistet ist, dass keine Flüssigkeit durch den Abluftkanal 3 oder den Ansaugkanal 4 austreten kann. Der im hinteren Bereich der Vorrichtung angeordnete Akkumulator kann bevorzugt abnehmbar mit dem Gehäuse 1 verbunden sein, so dass er zum Beispiel zum Wiederaufladen entnommen und in eine Steckdose eingesteckt werden kann. Ferner kann das Gehäuse 1 im hinteren Bereich eine Befestigungsmöglichkeit für einen Stiel aufweisen, so dass das Gerät auch in größeren Höhen eingesetzt werden kann.In the hollow chamber 2, a level sensor may be provided, which may be formed for example by an electrical contact and the engine turns off when a certain liquid level is reached, beyond which it is no longer guaranteed that no liquid through the exhaust duct 3 or the intake. 4 can escape. The accumulator arranged in the rear region of the device can preferably be detachably connected to the housing 1, so that it can be removed, for example, for recharging and plugged into a socket. Furthermore, the housing 1 can have a fastening possibility for a handle in the rear region, so that the device can also be used at greater heights.

Eine weitere vorteilhafte Ausgestaltung weist als Abziehlippe 7 eine abziehbare Gummilippe auf, die beispielsweise an einer in das Gehäuse 1 hineinragenden Haltestange derart befestigt ist, dass sie vor dem Saugmund 5 wie dargestellt angeordnet ist. Die Haltestange kann dann als Saugrohr ausgebildet und lösbar in das Gehäuse 1 eingesteckt werden, was den Vorteil hat, dass der Benutzer die Abziehlippe 7 für kleinere, diffizile Arbeiten ohne Saugnotwendigkeit abnehmen und als leichtes Abziehwerkzeug einsetzen kann.A further advantageous embodiment has as Abziehlippe 7 a peelable rubber lip, which is fixed for example on a projecting into the housing 1 holding rod such that it is arranged in front of the suction mouth 5 as shown. The support rod can then be designed as a suction tube and be detachably inserted into the housing 1, which has the advantage that the user can remove the Abziehlippe 7 for smaller, difficult jobs without Saugnotwendigkeit and use as a lightweight puller.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Gehäusecasing
22
Hohlkammerhollow
33
Abluftkanalexhaust duct
44
Ansaugkanalintake port
55
Saugmundsaugmund
66
Rotorrotor
77
Abziehlippesqueegee
88th
Abscheideraumseparating chamber
99
Antriebswelledrive shaft
1010
Strömungsleitprofilflow guide
1111
Ansaugstutzenintake
1212
Strömungslabyrinthflow labyrinth
1313
Abscheidevorrichtungseparating
1414
Aufnahmebuchse zur Befestigung eines StielsBushing for attaching a stem

Claims (10)

  1. Liquid aspirator for removing and sucking up liquids with
    - a housing (1),
    - a removal device formed by at least one squeegee (7) for removing and collecting the liquid in front of at least one suction mouth (5),
    - a suction device having a motor-driven suction apparatus which is able to suck an air/liquid stream along a flow path from the suction mouth (5) through an intake passage (4) into the housing (1),
    - a separating device (13) for separating the liquid from the air,
    - a tank to receive the separated liquid and
    - an exhaust passage (3) which is under a vacuum to draw the air out of the housing (1),
    characterised in that
    the liquid aspirator is formed such that it is provided with an on-/off switching function which switches on the motorised drive of the suction apparatus when pressure is applied to the squeegee (7) or the motor power is increased and, as the pressure is decreased, the motorised drive is switched off or the motor power is reduced.
  2. Liquid aspirator according to claim 1, characterised in that the squeegee (7) is mounted on the housing (1) so that it can pivot against the force of a restoring spring or by the elasticity of the component itself, and that the pivotable bearing has a button which is able to detect a slight backward pivoting of the squeegee (7) and can convert it into a switch-on pulse.
  3. Liquid aspirator according to claim 2, characterised in that it has a secondary circuit which is designed such that an initial pressure on the squeegee (7) activates the liquid aspirator.
  4. Liquid aspirator according to one of the preceding claims, characterised in that a time control is provided that enables the motorised drive of the suction apparatus to be switched off or reduced after a predetermined suction time.
  5. Liquid aspirator according to one of the preceding claims wherein a fill level sensor is provided in a hollow chamber (2) having the tank wherein said sensor is able to switch off the motorised drive when a certain liquid level is reached.
  6. Liquid aspirator according to one of the preceding claims, characterised in that the separating device (13) is formed by a flow diversion on the air entry side in the form of a stator or a rotor which is arranged in the tank at the suction passage (4) or in the tank in front of the entrance of the air/liquid flow and diverts the drawn-in air/liquid flow radially outwards into the tank, and which is formed by a flow labyrinth (12) arranged in front of the entrance into the exhaust passage (3) as a means of retaining water spray.
  7. Liquid aspirator according to one of the preceding claims, characterised in that the suction mouth (5) is mounted to rotate relative to the housing (1).
  8. Liquid aspirator according to one of the preceding claims, characterised in that the housing (1), particularly on its rear side located opposite the suction mouth (5), has a locating socket (14) for a handle which can be inserted into it and which can be retained in it by friction or by a close fit.
  9. Liquid aspirator according to one of the preceding claims, characterised in that the squeegee (7) together with the suction mouth (5) are formed as a separate component insertable into the device and that the suction mouth (5) is connected to the suction passage (4) by means of a leak-proof tubular plug-in connection.
  10. Liquid aspirator according to claim 9, characterised in that the component insertable into the device is connected to the rest of the device by means of a stem or a tube.
EP14180641.4A 2011-05-27 2012-05-29 Liquid aspirator Active EP2820989B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15176753.0A EP2959814B1 (en) 2011-05-27 2012-05-29 Liquid suction apparatus

Applications Claiming Priority (2)

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DE102011050697A DE102011050697A1 (en) 2011-05-27 2011-05-27 Liquid suction device for removing and absorbing liquids
EP20120724975 EP2701568B1 (en) 2011-05-27 2012-05-29 Liquid aspirator for drawing off and sucking up liquids

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EP20120724975 Division-Into EP2701568B1 (en) 2011-05-27 2012-05-29 Liquid aspirator for drawing off and sucking up liquids
EP20120724975 Division EP2701568B1 (en) 2011-05-27 2012-05-29 Liquid aspirator for drawing off and sucking up liquids

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EP15176753.0A Division EP2959814B1 (en) 2011-05-27 2012-05-29 Liquid suction apparatus
EP15176753.0A Division-Into EP2959814B1 (en) 2011-05-27 2012-05-29 Liquid suction apparatus

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EP2820989A2 EP2820989A2 (en) 2015-01-07
EP2820989A3 EP2820989A3 (en) 2015-04-08
EP2820989B1 true EP2820989B1 (en) 2016-04-20

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EP14180641.4A Active EP2820989B1 (en) 2011-05-27 2012-05-29 Liquid aspirator
EP15176753.0A Active EP2959814B1 (en) 2011-05-27 2012-05-29 Liquid suction apparatus

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US (2) US9021654B2 (en)
EP (3) EP2701568B1 (en)
CN (2) CN203815383U (en)
DE (3) DE102011050697A1 (en)
DK (1) DK2701568T3 (en)
PL (1) PL2820989T3 (en)
WO (1) WO2012163926A1 (en)

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EP2890283B1 (en) 2012-08-29 2017-08-02 Alfred Kärcher GmbH & Co. KG Extension device of a hard surfaces vacuum cleaning system
CN103251348B (en) 2013-06-03 2015-09-16 中山市金舜家庭用品有限公司 A kind of surface cleaning apparatus

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DE202012012815U1 (en) 2013-12-05
US20140109340A1 (en) 2014-04-24
DK2701568T3 (en) 2015-07-13
US20150208886A1 (en) 2015-07-30
WO2012163926A1 (en) 2012-12-06
PL2820989T3 (en) 2016-10-31
EP2959814B1 (en) 2016-09-14
US9615705B2 (en) 2017-04-11
CN204169772U (en) 2015-02-25
EP2701568B1 (en) 2015-05-20
EP2820989A2 (en) 2015-01-07
EP2959814A1 (en) 2015-12-30
US9021654B2 (en) 2015-05-05
EP2820989A3 (en) 2015-04-08
EP2701568A1 (en) 2014-03-05
CN203815383U (en) 2014-09-10
DE202012012814U1 (en) 2013-12-05
DE102011050697A1 (en) 2012-11-29

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