EP2152440B1 - Surface cleaning head - Google Patents

Surface cleaning head Download PDF

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Publication number
EP2152440B1
EP2152440B1 EP08758969.3A EP08758969A EP2152440B1 EP 2152440 B1 EP2152440 B1 EP 2152440B1 EP 08758969 A EP08758969 A EP 08758969A EP 2152440 B1 EP2152440 B1 EP 2152440B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
housing
cleaning head
surface cleaning
spray arm
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
EP08758969.3A
Other languages
German (de)
French (fr)
Other versions
EP2152440A2 (en
Inventor
Jürgen Binder
Andreas Schwarz
Vitali 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.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
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 Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Priority to PL08758969T priority Critical patent/PL2152440T3/en
Publication of EP2152440A2 publication Critical patent/EP2152440A2/en
Application granted granted Critical
Publication of EP2152440B1 publication Critical patent/EP2152440B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02Cleaning by the force of jets or sprays
    • B08B3/024Cleaning by means of spray elements moving over the surface to be cleaned
    • 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
    • A47L11/34Machines for treating carpets in position by liquid, foam, or vapour, e.g. by steam
    • 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
    • A47L11/4061Steering means; Means for avoiding obstacles; Details related to the place where the driver is accommodated
    • 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
    • A47L11/408Means for supplying cleaning or surface treating agents
    • A47L11/4088Supply pumps; Spraying devices; Supply conduits
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02Cleaning by the force of jets or sprays
    • B08B3/026Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B05B12/32Shielding elements, i.e. elements preventing overspray from reaching areas other than the object to be sprayed
    • B05B12/34Shielding elements, i.e. elements preventing overspray from reaching areas other than the object to be sprayed movable relative to the spray area
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/04Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
    • B05B3/06Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet by jet reaction, i.e. creating a spinning torque due to a tangential component of the jet

Definitions

  • the invention relates to a surface cleaning head for cleaning a surface having the features of the preamble of claim 1.
  • a surface cleaning head for cleaning a surface known with a hood-shaped, downwardly open housing, in which at least one spray arm is freely rotatably mounted about a rotational axis.
  • the spray arm carries a nozzle, which is acted upon by pressurized liquid and rotates together with the spray arm about the axis of rotation for acting on the surface to be cleaned with a liquid jet.
  • the surface cleaning head is particularly suitable for cleaning hard surfaces, such as stone or wooden terraces, garage entrances and garage doors. For this purpose, it is only necessary to connect to the surface cleaning head, the pressure line of a high-pressure cleaner, so that pressurized cleaning liquid can be supplied to the arranged on the spray arm nozzle.
  • the cleaning liquid can be sprayed onto the surface to be cleaned.
  • the nozzle undergoes a recoil, so that the spray arm is rotated. This makes it possible to apply a relatively large area within a short time with cleaning liquid.
  • at least two spray arms are used, each carrying a nozzle, wherein the nozzles are acted upon simultaneously with pressurized cleaning liquid.
  • Each held on a spray arm nozzles perform during operation of the surface cleaning head from a circular motion. As already explained, This makes it possible to clean a relatively large area in a short time. The cleaning of corner areas of the area is however made more difficult.
  • a surface cleaning head having the features of the preamble of claim 1 is known from U.S. Patent 4,191,589 A known.
  • the surface cleaning head is suitable for cleaning a surface and has a hood-shaped, downwardly open housing.
  • the housing two spray arms are freely rotatably mounted about a common axis of rotation.
  • the spray arms each carry a nozzle which can be acted upon by pressurized liquid.
  • the nozzles rotate together with the spray arms about the axis of rotation and allow to act on the surface to be cleaned with a liquid jet.
  • the surface cleaning head has a non-rotatably held additional nozzle, which can also be acted upon by pressurized cleaning liquid.
  • Object of the present invention is to develop a surface cleaning head of the generic type such that the cleaning of corner areas is easier.
  • an additional nozzle is used in the surface cleaning head according to the invention, which is held against rotation relative to the axis of rotation of the at least one spray arm. This allows the user a certain area of the area to be cleaned specifically apply cleaning fluid, for example, a corner region of the surface to be cleaned can be easily achieved by the additional nozzle.
  • the liquid jet discharged from the auxiliary nozzle impinges on the surface to be cleaned outside the circular region defined by the nozzle rotating together with the respective spray arm.
  • the housing By means of the housing, the area of the surface to be cleaned is covered by the nozzles respectively held by a spray arm and by the additional nozzle with cleaning liquid.
  • the housing has a substantially annular side wall which surrounds the at least one spray arm and on the outside of which a substantially V-shaped attachment part is attached, which extends over a partial area of the outer circumference of the side wall and together with the region covered by the attachment part Side wall defines a space in which at least the outlet opening of the auxiliary nozzle is arranged.
  • the interior of the housing is divided in such a configuration into a first region which is surrounded by the side wall and which receives at least one spray arm, and a second region which receives at least the outlet opening of the auxiliary nozzle. It can be provided here that the entire auxiliary nozzle is arranged in this space, in a particularly compact embodiment of the surface cleaning head, only one end region of the auxiliary nozzle, which has the outlet opening of the additional nozzle, enters the room.
  • the space defined by the attachment part is substantially triangular in plan view with an arcuate base side formed by the side wall of the housing.
  • the sides of the space formed by the attachment part can also be curved convexly or concavely.
  • the side wall of the housing and the attachment part each carry a splash guard at their free edges.
  • a splash guard for example, a bristle strip can be used or a spray lip made of an elastic material.
  • the auxiliary nozzle is designed as a rotor nozzle with a nozzle housing, which is provided in an end wall with a cup-shaped bearing for the front, spherical end of a through-bore nozzle body and having an insert part with at least one tangential bore for a liquid through the liquid in the nozzle housing is rotatable about the nozzle housing longitudinal axis, so that the nozzle body rotates together with the rotating liquid and thereby with a contact surface at its periphery against the inner wall of the nozzle housing, wherein the longitudinal axis of the nozzle body relative to the longitudinal axis of the nozzle housing inclined is.
  • Such rotor nozzles are for example from the European patent EP 0 600 937 B1 known. With their help, a point-like liquid jet can be achieved, which rotates on a conical surface around the longitudinal axis of the nozzle housing. By means of such rotor nozzles, a particularly effective cleaning of a surface can be achieved.
  • the additional nozzle can also be designed in the form of a flat jet nozzle or else in the form of a spray nozzle.
  • the surface cleaning head has a plurality of additional nozzles, which can be acted upon as an alternative or together with the respective held on a spray arm nozzles with pressurized cleaning liquid.
  • the nozzles held on a respective rotating spray arm are acted on at the same time as the auxiliary nozzle by pressurized cleaning liquid, so that all nozzles of the surface cleaning head simultaneously direct a liquid jet onto the surface to be cleaned.
  • the surface cleaning head has a switching device by means of which either the together with a spray arm rotating nozzle and / or the additional nozzle can be acted upon with cleaning liquid.
  • a switching device by means of which either the together with a spray arm rotating nozzle and / or the additional nozzle can be acted upon with cleaning liquid.
  • the additional nozzle may be formed as a low-pressure nozzle and each held on a rotating spray arm nozzles may be formed as high-pressure nozzles. This gives the user the opportunity to apply in a first cleaning step, the surface to be cleaned with very high pressure cleaning liquid to solve adhering to the surface dirt. The dissolved dirt can then be rinsed off the surface by lower pressure cleaning fluid dispensed from the auxiliary nozzle.
  • the switching device in a preferred embodiment, at least one actuator movably held on the housing.
  • the switching device can be converted into different switching positions.
  • the switching device can for example be designed such that in a first switching position only the rotating together with a spray arm around its axis of rotation nozzles are subjected to pressurized cleaning liquid, whereas in a second switching position only the auxiliary nozzle is pressurized with pressurized cleaning liquid. It is advantageous if the switching device has a third switching position, in which both the nozzles rotating together with a spray arm and the additional nozzle are supplied with cleaning liquid.
  • the respective switching position can be selected by the user by means of the at least one, on the housing movably held actuator.
  • a particularly simple handling is achieved in a preferred embodiment in that the switching device has two movably held actuators. By means of the two actuators, the user can select one of two switching positions of the switching device in a very simple, intuitively detectable manner.
  • the switching device has two foot pedals, which are each held movably on the housing.
  • the switching device on a user-operable valve, wherein by means of the valve, a flow connection of a connection part of the surface cleaning head is selectively releasable to each held on a spray arm nozzles and / or to the auxiliary nozzle.
  • the valve has only two switching positions, alternatively the nozzles held on a spray arm or the auxiliary nozzle is supplied with pressurized cleaning fluid.
  • the valve comprises three switching positions, so that in the third switching position all nozzles can be acted upon simultaneously with cleaning liquid.
  • the valve has a valve body which is movably held in a valve receptacle and between a first end position in which it releases the flow connection to each held on a spray arm nozzles and blocks the flow connection to the additional nozzle and a second end position, in he locks the flow connection to each held on a spray arm nozzles and the flow connection to the additional nozzle, reciprocally movable.
  • the two end positions can each be predetermined by a stop element, so that the valve body can be moved in a simple manner between its two end positions back and forth in order to achieve the respective desired switching position of the switching device. This facilitates the operation of the surface cleaning head.
  • valve body can be acted upon by a pressure force in the direction of its respectively assumed end position.
  • the valve is self-holding, by the valve body remains in its once occupied end position due to the pressure force acting on it until it is selectively transferred by the user in the other end position.
  • additional restoring elements for example the use of spring elements, can be dispensed with.
  • valve seat is formed as a valve bore and the valve body as a valve piston, wherein the valve piston is slidably held in the valve bore.
  • valve bore is designed as a through hole, which is penetrated by the valve piston.
  • the valve piston can thereby project with its end regions over the valve bore and be pushed back and forth by applying force to the protruding end portions in a simple manner.
  • the valve piston carries at least one protruding end portion a radial extension, for example, a circumferential bead, which serves as an end position defining stop.
  • the valve piston is displaceable about a valve axis aligned perpendicular to the axis of rotation of the at least one spray arm.
  • the axis of rotation of the at least one spray arm may, for example, be oriented perpendicular to the surface to be cleaned. When cleaning a bottom surface, the axis of rotation of the at least one spray arm thus assumes a vertical orientation and the valve axis is aligned horizontally. It has been found that simplifies the handling of the surface cleaning head.
  • the valve piston is displaceable in an advantageous embodiment by means of two actuators in opposite directions, wherein between the actuators and the valve piston in each case a force transmission member is arranged.
  • the power transmission members allow a deflection of the actuating force exerted by the actuators, so that the loading of the valve piston can be kept low with aligned perpendicular to the valve axis force components. The risk that the valve piston canted in the valve bore is thereby reduced.
  • the actuators and the power transmission members are pivotally mounted. It has proved to be advantageous when the pivot axis of the power transmission elements are aligned parallel and offset in the direction of the valve piston to the pivot axes of the actuators.
  • the actuators can be configured, for example, as pivotable foot pedals whose pivot axes are aligned parallel to the longitudinal axis of the housing, wherein the foot pedals are hinged to the housing top to the housing.
  • the force transmission members may be formed as pivot arms whose pivot axis are arranged below the pivot axis of the foot pedals and aligned parallel thereto.
  • the pivot arms can be held in each case in a bearing shell, which is arranged above a protruding from the valve bore end portion of the valve piston.
  • the at least one spray arm on a supply line rotatably supported which is adjustable in height relative to a central distributor part, wherein the distributor part has the switching device.
  • the at least one spray arm is thus height adjustable together with the supply line. This makes it possible to vary the distance of the rotating around the axis of rotation of the spray arms nozzles to be cleaned surface. If the surface to be cleaned is subjected to a very intense jet of liquid, the smallest possible distance between the nozzles rotating around the axis of rotation and the surface to be cleaned can be selected. However, if a sensitive surface to be cleaned, the user can choose a greater distance between the rotating nozzles and the surface by adjusting the supply line together with the at least one spray arm relative to the central distributor part.
  • the housing of the surface cleaning head can be fixed, for example, it can be provided that the housing can be latched or screwed to the distributor part.
  • the supply line is preferably designed as a pipe piece which is held displaceably in a bore of the distributor part.
  • the pipe section is made of brass.
  • the distributor part can be made of a plastic material, and also for the production of the spray arms, a plastic material can be used.
  • the supply line is preferably rotatably held to the distributor part and the spray arms are rotatable relative to the supply line about the axis of rotation.
  • the surface cleaning head preferably has a supply pipe which can be connected to a liquid supply line and which opens into the distributor part.
  • the pressure line of a high-pressure cleaning device can be connected to the supply pipe so that the surface cleaning head can be supplied with pressurized cleaning liquid via the supply pipe and the distributor part adjoining this.
  • the additional nozzle is preferably in fluid communication with the distributor part via a connecting line.
  • a rigid connection can be used in the form of a connecting tube, but it can also be provided a flexible connection in the form of a connecting tube.
  • the auxiliary nozzle can be adjustable in height relative to the central distributor part, so that the user can change the distance between the additional nozzle and the surface to be cleaned.
  • the supply pipe is pivotably mounted in the distributor part, because this allows a user to change the orientation of the supply pipe relative to the distributor part.
  • the supply pipe is pivotably mounted in the distributor part about a pivot axis aligned transversely to the axis of rotation of the at least one spray arm.
  • the axis of rotation of the at least one spray arm is preferably oriented vertically and the pivot axis of the feed tube assumes a horizontal orientation. This facilitates the handling of the surface cleaning head.
  • the surface cleaning head For height adjustment of the supply line of the at least one, mounted on the supply line spray arm, the surface cleaning head preferably has a height-adjustable sliding part, which is non-rotatable on the distributor part, but coaxial is held displaceably to the axis of rotation of the at least one spray arm and that carries the supply line.
  • the supply line can thus be moved together with the sliding part coaxial with the axis of rotation of the at least one spray arm relative to the distributor part.
  • the sliding part is secured against rotation relative to the distributor part, but it is displaceable relative to the distributor part coaxially with the axis of rotation of the at least one spray arm.
  • the sliding part passes through the distributor part and is displaceable relative to the distributor part by means of a height adjustment member.
  • an end portion of the sliding part protruding upwards beyond the distributor part bears an external thread
  • the height adjustment element has a threaded sleeve screwed onto the external thread of the sliding part, which is held rotatably and immovably on the housing.
  • a total occupied by the reference numeral 10 inventive surface cleaning head is shown schematically with a dome-shaped, downwardly, in the direction of a surface to be cleaned open housing 11, which has a lower housing part 12 and a housing upper part 13.
  • the lower housing part 12 comprises a circular in plan view, self-contained side wall 15 which projects from an intermediate wall 16 down and carries at its free edge 17 a circumferential splash guard 18.
  • the lower housing part 12 also comprises an externally attached to the side wall 15 attachment portion 20 which is formed in plan view substantially V-shaped with a first leg 21 and a second leg 22 which define a housing tip 23 and also carry a splash guard 25 at its lower free edge 24.
  • the circumferential side wall 15 defines, in combination with the intermediate wall 16, a main space 27 of the housing 11 and the attachment part 20 defines, in combination with the area of the side wall 15 covered by the attachment part 20, an adjoining space 28 of the housing 11.
  • the housing upper part 13 comprises a cover 30, which extends virtually over the entire length of the housing lower part 12 into the region of the housing tip 23, transversely to the longitudinal extension of the surface cleaning head 10 but only over a partial region of the housing lower part 12.
  • the upper housing part 13 comprises two arcuate handles 31, 32, which are integrally connected to the cover 30 and can be grasped by the user by hand.
  • the cover 30, in combination with the area of the intermediate wall 16 covered by the cover 30, defines a distribution chamber 34 of the housing 11. From the distribution chamber 34, a nozzle shaft 35 leads into the secondary space 28.
  • a central distributor part 37 is arranged, with which the lower housing part 12 is screwed by means of connecting screws 38.
  • the lower housing part 12 in turn is screwed by means of connecting screws 39 with the upper housing part 13.
  • a supply pipe 41 which is mounted pivotably about a transversely to the pipe longitudinal axis 42 aligned pivot axis 43 in the distributor part 34.
  • a connecting element 45 At its side facing away from the distributor part 37 carries free end the supply pipe 41 is a connecting element 45, so that a known per se and therefore not shown in the drawing pressure line of a high-pressure cleaner can be connected to the feed pipe 41.
  • the supply pipe 41 is connected via a coaxially to the pivot axis 43 aligned first connecting channel 47 and adjoining this in the flow direction, obliquely to the pipe longitudinal axis 42 aligned second connecting channel 48 with a formed by the distributor part 37 valve seat in flow communication, which is designed in the form of a continuous valve bore 50 ,
  • the valve bore 50 has a plurality of sections of different diameter.
  • a first central portion 53 of reduced diameter which merges via a conical constriction 55 in a second central portion 56 with a further reduced diameter.
  • a second end section 59 of the valve bore 50 adjoins the second middle section 56 via a conical extension 58.
  • valve bore 50 is penetrated by a valve body, which is designed in the form of a valve piston 61 and in the longitudinal direction of the valve bore 50, that is in the direction of a valve axis 62, which is aligned parallel to the pivot axis 43 of the feed tube 41, back and forth.
  • the valve piston 41 has in the region of the first end portion 61 on a peripheral collar 64, which comes with a corresponding axial displacement of the valve piston 61 at the level 52 to the plant.
  • the step 52 thus forms a first stop which defines an end position of the displaceable valve piston 61.
  • the valve piston 61 At its end region projecting beyond the second end section 59, the valve piston 61 has an annular bead 65, the outer diameter of which is greater than the inner diameter of the second end section 59.
  • the annular bead 65 As a result, the annular bead 65, as in FIG FIG. 3 shown, with suitable axial displacement of the valve piston 61 on the outside of the distributor part 37 comes to rest.
  • the annular bead 65 thus forms a second stop, which also defines an end position of the displaceable valve piston 61.
  • the valve piston 61 is formed in stages, wherein it has a smaller diameter in a central region than at its end regions. Within the first central portion 53, the valve piston 61 tapers, wherein it carries in a region of enlarged diameter a first annular groove, in which a first O-ring is arranged. By means of the first O-ring 67, the valve piston 61 is sealingly against the wall of the first central portion 63 irrespective of its respectively assumed position within the valve bore 50.
  • the valve piston 61 faces away from the circumferential collar 64 and, in a region of reduced outside diameter, carries a further annular groove in which a second O-ring 68 is arranged.
  • the diameter of the second O-ring 68 is smaller than the diameter of the first O-ring 67. It is chosen such that the valve piston 61 when displaced in the direction of the annular bead 65 sealingly against the wall of the second middle portion 56, whereas he is arranged at a distance in the direction away from the annular bead 65 at a distance from the wall of the first central portion 53 of the valve bore 50, as shown in FIG FIG. 3 is shown.
  • the valve piston 68 At a distance from the third O-ring 69, the valve piston 68 in a region with an enlarged diameter, a further annular groove which receives a fourth O-ring 70.
  • the diameter of the fourth O-ring 70 coincides with the diameter of the first O-ring 67.
  • the second connection channel 48 opens approximately centrally into the second middle section 56 of the valve bore 50.
  • the conical constriction 55 immediately adjoins the first center section 53 of the valve bore 50, a third connection channel 73, the valve bore 50 with a downwardly directed blind bore 74 of Distributor part 37 connects.
  • the conical extension 58 immediately adjacent to the second end portion 59 connects to a fourth connecting channel 76, which connects the valve bore 50 with a connecting tube 77.
  • the distributor part 37 is in flow connection with an additional nozzle 80, which is arranged in the nozzle shaft 35 and explained in more detail below.
  • a supply line 82 is immersed, which is designed in the form of a brass tube and is sealed by means of an O-ring 83 against the wall of the blind bore 74.
  • the supply line 82 can be moved in the longitudinal direction.
  • the supply line 82 carries two diametrically opposed spray arms 85, 86, each having a flow channel 88 and 89, respectively, and carrying at their free end a nozzle 91 and 92, respectively.
  • These nozzles 91, 92 produce an obliquely downwardly directed liquid jet of a cleaning liquid which, upon exiting the nozzles 91, 92, exerts a torque on the spray arms 85 and 86, respectively, by reaction forces and thereby causes them to rotate.
  • the axis of rotation 93 is aligned coaxially with the longitudinal axis of the feed line 82 and the longitudinal axis of the blind bore 74.
  • the feed line 82 carries an external thread 95, via which the feed line 82 is connected to a fork-shaped sliding part 97.
  • the sliding part 97 comprises a shaft-like fork head 98 with a continuous threaded hole 99, via which the supply line 82 is connected to the sliding part 97.
  • the sliding part 97 has two forks 101, 102, the spray arms 85, 86 facing away from the top of the clevis 98 and each pass through a sickle-shaped passage 105 and 106 of the distributor part 37.
  • the forks 101, 102 carry an external thread 108 with a very high pitch.
  • a threaded sleeve 110 of a height adjustment member 111 is screwed.
  • the threaded sleeve 110 is closed at its upper end 112 and integrally connected to a hood-shaped handle portion 113 which engages with an outwardly projecting annular flange 114 an edge 116 of an opening of the cover 30.
  • the auxiliary nozzle 80 is in the form of a rotor nozzle and comprises a nozzle housing 120 with a rear housing part 121 and a front housing part 122.
  • the connecting tube 77 opens into the rear housing part 121, which is screwed into the front housing part 122 with the interposition of an insert 124, the has a plurality of tangential bores through which the interior of the rear housing part 121 is in fluid communication with the interior of the front housing part 122.
  • the front housing part 121 is designed substantially frusto-conical and terminates in an end wall 126, which is provided with an outlet opening 127 and inside a pan-shaped bearing forms for the spherical front end of a arranged in the front housing part 122 nozzle body 129 having a through hole 130 and at the inner wall of the front housing part 122 abuts.
  • auxiliary nozzle 80 If the auxiliary nozzle 80 is supplied with pressurized cleaning liquid, it flows tangentially into the front housing part 122 via the tangential bores of the insert 124 and rotates within the front housing part 122 about the longitudinal axis 132 of the nozzle housing 120.
  • the rotating liquid displaces the cleaning fluid on the inner wall of the housing front housing parts 122 adjacent Nozzle body in rotation about the longitudinal axis 132, wherein the nozzle body longitudinal axis 133 relative to the housing longitudinal axis 132 is inclined.
  • a point-shaped liquid jet rotating about the housing longitudinal axis 132 is emitted by the additional nozzle 80.
  • the optional supply of cleaning liquid starting from the supply pipe 41 via the connecting channels 47 and 48 and the valve bore 50 selectively to each held on a spray arm 85 and 86 nozzles 91 and 92 or to the additional nozzle 82 is carried out by moving the valve piston 61 along the valve axis 62 between the predetermined by the circumferential collar 64 and the annular bead 65 end positions.
  • the surface cleaning device 10 includes two actuators in the form of a first foot pedal 136 and a second foot pedal 137, which are each mounted pivotably about a pivot axis 138 and 139 on the cover 30.
  • the foot pedals 136, 137 each cooperate with a power transmission member in the form of a pivot arm 141, 142, respectively.
  • the pivot arms 141, 142 are each arranged between a foot pedal 136 or 137 and an end face 144 or 145 of the valve piston 61.
  • the pivot axes 147, 148 of the pivot arms 141 and 142 are arranged parallel to the pivot axes 138, 139 of the foot pedals 136 and 137 and in the direction of the distributor part 37 offset therefrom.
  • the pivot axes 147, 148 are each arranged above one end of the valve piston 61. This is especially true FIG. 5 clear. Via the pivot arms 141, 142, a movement of the foot pedals 136 and 137 can be transmitted to the valve piston 61, wherein the valve piston 61 is practically acted upon only with coaxial with the valve axis 62 oriented force components. The danger that the Valve piston 61 tilted by operating the predominantlypedale 136, 137 within the valve bore 50 is thereby kept very low.
  • valve piston 61 in the valve bore 50 is displaced until the annular bead 65 bears against the distributor part 37 on the outside, as shown in FIG FIG. 3 is shown.
  • the valve piston 61 releases the flow communication between the second connection channel 48 and the third connection channel 73, so that the liquid supplied to the supply pipe 41 from the supply pipe 41 via the first connection channel 47, the second connection channel 48, the second middle section 56 and the first Central portion 53 of the valve bore 50 can flow to the third connecting channel 73, from which the cleaning fluid via the blind bore 74 and the supply line 82 to the flow channels 88, 89 of the spray arms 85, 86 and finally to the nozzles 91, 92 can pass.
  • a surface to be cleaned can be acted upon by cleaning liquid by means of the nozzles 91, 92 revolving around the rotation axis 93.
  • the position reached by actuation of the first foot pedal 136 is automatically maintained by the valve piston 61 due to the pressure force of the cleaning liquid acting on it.
  • This automatic property is achieved in that in the above-mentioned position, the sealing of the valve piston 61 relative to the inner wall of the valve bore 50 on the one hand by the first O-ring 67 and on the other hand by the third O-ring 69 is achieved.
  • the first O-ring 67 has a significantly larger diameter than the third O-ring 69, and this in turn has the result that the pressurized cleaning fluid the valve piston in the region of the first O-ring 67 is subjected to a greater compressive force than in the region of the third O-ring 69.
  • the valve piston 61 is acted upon actuation of the first foot pedal 136 with a compressive force that holds the valve piston 61 reliably in the assumed end position.
  • valve piston 61 If the user actuates the second foot pedal 137, then the valve piston 61 is displaced within the valve bore 50 until the peripheral collar 64 comes into contact with the step 52. In this position, the second O-ring 68 bears sealingly against the inner wall of the second middle section 56, so that the valve piston 61 blocks the flow connection between the second connecting channel 48 and the third connecting channel 73 due to the sealing engagement of the second O-ring 68. Instead, the valve piston 61 releases the flow connection between the second connection channel 48 and the fourth connection channel 76, because when the orbiting collar 64 bears against the step 52, the third O-ring 69 assumes a position within the second end section 69 of the valve bore 50.
  • the third O-ring 69 is disposed within the second end portion 59 at a distance from the inner wall thereof, whereas the fourth O-ring 70 sealingly abuts against the inner wall.
  • the valve piston 61 is thus displaced so far within the valve bore 50 that cleaning liquid from the supply tube 61 via the first connecting channel 47, the second connecting channel 48, the second middle section 56 and the second end portion 59 of the valve bore 50 to the fourth Connecting channel 76 and the adjoining this connecting pipe 77 can flow, so that the auxiliary nozzle 80 can be supplied with pressurized cleaning liquid.
  • the position taken after actuation of the second foot pedal 137 retains the Valve piston 61, because it is acted upon by the pressurized cleaning fluid with a compressive force, which is oriented such that the encircling collar 64 is pressed against the step 52.
  • the reason for this is that the sealing of the valve piston 61 with respect to the valve bore 50 in this position on the one hand by the second O-ring 68 bearing against the inner wall of the second middle section 56 and on the other hand by the fourth O-section resting against the inner wall of the second end section 59.
  • Ring 70 is achieved.
  • the diameter of the fourth O-ring 70 is selected larger than the diameter of the second O-ring 68, and this in turn has the result that the resulting pressure force reliably holds the valve piston 61 in its end position occupied by actuation of the second foot pedal 137.
  • a surface to be cleaned can be acted upon by means of the surface cleaning device 10 optionally with cleaning liquid from the rotating around the axis of rotation 93 nozzles 91, 92 or with cleaning liquid from the additional nozzle 80.
  • the circumferential nozzles 91, 92 By means of the circumferential nozzles 91, 92, a relatively large area can be cleaned within a short time, and by using the additional nozzle 80 and corner areas of the surface to be cleaned can be reliably applied with cleaning liquid.

Description

Die Erfindung betrifft einen Flächenreinigungskopf zur Reinigung einer Fläche mit den Merkmalen des Oberbegriffs von Patentanspruch 1.The invention relates to a surface cleaning head for cleaning a surface having the features of the preamble of claim 1.

Aus der deutschen Patentschrift DE 102 06 013 C1 ist ein Flächenreinigungskopf zur Reinigung einer Fläche bekannt mit einem haubenförmigen, nach unten offenen Gehäuse, in dem zumindest ein Sprüharm um eine Drehachse frei drehbar gelagert ist. Der Sprüharm trägt eine Düse, die mit unter Druck stehender Flüssigkeit beaufschlagbar ist und zusammen mit dem Sprüharm um die Drehachse umläuft zur Beaufschlagung der zu reinigenden Fläche mit einem Flüssigkeitsstrahl. Der Flächenreinigungskopf eignet sich insbesondere zur Reinigung von Hartflächen, beispielsweise Stein- oder Holzterrassen, Garageneinfahrten und Garagentore. Hierzu ist es lediglich erforderlich, an den Flächenreinigungskopf die Druckleitung eines Hochdruckreinigungsgerätes anzuschließen, so dass unter Druck stehende Reinigungsflüssigkeit der am Sprüharm angeordneten Düse zugeführt werden kann. Mit Hilfe der Düse kann die Reinigungsflüssigkeit auf die zu reinigende Fläche gesprüht werden. Die Düse erfährt hierbei einen Rückstoß, so dass der Sprüharm in Drehung versetzt wird. Dies ermöglicht es, eine verhältnismäßig große Fläche innerhalb kurzer Zeit mit Reinigungsflüssigkeit zu beaufschlagen. Üblicherweise kommen mindestens zwei Sprüharme zum Einsatz, die jeweils eine Düse tragen, wobei die Düsen gleichzeitig mit unter Druck stehender Reinigungsflüssigkeit beaufschlagbar sind.From the German patent DE 102 06 013 C1 is a surface cleaning head for cleaning a surface known with a hood-shaped, downwardly open housing, in which at least one spray arm is freely rotatably mounted about a rotational axis. The spray arm carries a nozzle, which is acted upon by pressurized liquid and rotates together with the spray arm about the axis of rotation for acting on the surface to be cleaned with a liquid jet. The surface cleaning head is particularly suitable for cleaning hard surfaces, such as stone or wooden terraces, garage entrances and garage doors. For this purpose, it is only necessary to connect to the surface cleaning head, the pressure line of a high-pressure cleaner, so that pressurized cleaning liquid can be supplied to the arranged on the spray arm nozzle. With the help of the nozzle, the cleaning liquid can be sprayed onto the surface to be cleaned. The nozzle undergoes a recoil, so that the spray arm is rotated. This makes it possible to apply a relatively large area within a short time with cleaning liquid. Usually, at least two spray arms are used, each carrying a nozzle, wherein the nozzles are acted upon simultaneously with pressurized cleaning liquid.

Die jeweils an einem Sprüharm gehaltenen Düsen führen im Betrieb des Flächenreinigungskopfes eine kreisförmige Bewegung aus. Wie bereits erläutert, ermöglicht dies, eine verhältnismäßig große Fläche innerhalb kurzer Zeit zu reinigen. Die Reinigung von Eckbereichen der Fläche wird allerdings erschwert.Each held on a spray arm nozzles perform during operation of the surface cleaning head from a circular motion. As already explained, This makes it possible to clean a relatively large area in a short time. The cleaning of corner areas of the area is however made more difficult.

Ein Flächenreinigungskopf mit den Merkmalen des Oberbegriffes von Patentanspruch 1 ist aus der US-Patentschrift 4,191,589 A bekannt. Der Flächenreinigungskopf ist zur Reinigung einer Fläche geeignet und weist ein haubenförmiges, nach unten offenes Gehäuse auf. In dem Gehäuse sind zwei Sprüharme um eine gemeinsame Drehachse frei drehbar gelagert. Die Sprüharme tragen jeweils eine Düse, die mit unter Druck stehender Flüssigkeit beaufschlagbar ist. Die Düsen rotieren zusammen mit den Sprüharmen um die Drehachse und ermöglichen es, die zu reinigende Fläche mit einem Flüssigkeitsstrahl zu beaufschlagen. Zusätzlich zu den an den Sprüharmen gehaltenen Düsen weist der Flächenreinigungskopf eine drehfest gehaltene Zusatzdüse auf, die ebenfalls mit unter Druck stehender Reinigungsflüssigkeit beaufschlagt werden kann.A surface cleaning head having the features of the preamble of claim 1 is known from U.S. Patent 4,191,589 A known. The surface cleaning head is suitable for cleaning a surface and has a hood-shaped, downwardly open housing. In the housing two spray arms are freely rotatably mounted about a common axis of rotation. The spray arms each carry a nozzle which can be acted upon by pressurized liquid. The nozzles rotate together with the spray arms about the axis of rotation and allow to act on the surface to be cleaned with a liquid jet. In addition to the nozzles held on the spray arms, the surface cleaning head has a non-rotatably held additional nozzle, which can also be acted upon by pressurized cleaning liquid.

Aufgabe der vorliegenden Erfindung ist es, einen Flächenreinigungskopf der gattungsgemäßen Art derart weiterzubilden, dass die Reinigung von Eckbereichen einfacher ist.Object of the present invention is to develop a surface cleaning head of the generic type such that the cleaning of corner areas is easier.

Diese Aufgabe wird durch einen Flächenreinigungskopf mit den Merkmalen von Patentanspruch 1 gelöst.This object is achieved by a surface cleaning head with the features of claim 1.

Zusätzlich zu der mindestens einen Düse, die an einem Sprüharm angeordnet ist und zusammen mit diesem um die Drehachse umläuft, kommt beim erfindungsgemäßen Flächenreinigungskopf eine Zusatzdüse zum Einsatz, die relativ zur Drehachse des mindestens einen Sprüharms drehfest gehalten ist. Dadurch kann der Benutzer einen bestimmten Bereich der zu reinigenden Fläche gezielt mit Reinigungsflüssigkeit beaufschlagen, beispielsweise kann ein Eckbereich der zu reinigenden Fläche von der Zusatzdüse gut erreicht werden. Der von der Zusatzdüse abgegebene Flüssigkeitsstrahl trifft außerhalb des kreisförmigen Bereichs, der von der zusammen mit dem jeweiligen Sprüharm rotierenden Düse definiert wird, auf die zu reinigende Fläche.In addition to the at least one nozzle, which is arranged on a spray arm and rotates together with the latter about the axis of rotation, an additional nozzle is used in the surface cleaning head according to the invention, which is held against rotation relative to the axis of rotation of the at least one spray arm. This allows the user a certain area of the area to be cleaned specifically apply cleaning fluid, for example, a corner region of the surface to be cleaned can be easily achieved by the additional nozzle. The liquid jet discharged from the auxiliary nozzle impinges on the surface to be cleaned outside the circular region defined by the nozzle rotating together with the respective spray arm.

Mittels des Gehäuses wird der von den jeweils an einem Sprüharm gehaltenen Düsen und von der Zusatzdüse mit Reinigungsflüssigkeit beaufschlagte Bereich der zu reinigenden Fläche abgedeckt. Erfindungsgemäß weist das Gehäuse eine im Wesentlichen kreisringförmige Seitenwand auf, die den mindestens einen Sprüharm umgibt und an deren Außenseite ein im Wesentlichen V-förmiges Ansatzteil angesetzt ist, das sich über einen Teilbereich des Außenumfangs der Seitenwand erstreckt und zusammen mit dem vom Ansatzteil überdeckten Bereich der Seitenwand einen Raum definiert, in dem zumindest die Auslassöffnung der Zusatzdüse angeordnet ist. Der Innenraum des Gehäuses wird bei einer derartigen Ausgestaltung unterteilt in einen ersten Bereich, der von der Seitenwand umgeben ist und der mindestens, einen Sprüharm aufnimmt, und einen zweiten Bereich, der zumindest die Auslassöffnung der Zusatzdüse aufnimmt. Es kann hierbei vorgesehen sein, dass die gesamte Zusatzdüse in diesem Raum angeordnet ist, bei einer besonders kompakten Ausführungsform des Flächenreinigungskopfes taucht lediglich ein Endbereich der Zusatzdüse, der die Auslassöffnung der Zusatzdüse aufweist, in den Raum ein.By means of the housing, the area of the surface to be cleaned is covered by the nozzles respectively held by a spray arm and by the additional nozzle with cleaning liquid. According to the invention, the housing has a substantially annular side wall which surrounds the at least one spray arm and on the outside of which a substantially V-shaped attachment part is attached, which extends over a partial area of the outer circumference of the side wall and together with the region covered by the attachment part Side wall defines a space in which at least the outlet opening of the auxiliary nozzle is arranged. The interior of the housing is divided in such a configuration into a first region which is surrounded by the side wall and which receives at least one spray arm, and a second region which receives at least the outlet opening of the auxiliary nozzle. It can be provided here that the entire auxiliary nozzle is arranged in this space, in a particularly compact embodiment of the surface cleaning head, only one end region of the auxiliary nozzle, which has the outlet opening of the additional nozzle, enters the room.

Der vom Ansatzteil definierte Raum ist in der Draufsicht im Wesentlichen dreieckförmig ausgebildet mit einer bogenförmigen Grundseite, die von der Seitenwand des Gehäuses gebildet wird. Zusätzlich können auch die vom Ansatzteil gebildeten Seiten des Raumes konvex oder konkav gekrümmt sein.The space defined by the attachment part is substantially triangular in plan view with an arcuate base side formed by the side wall of the housing. In addition, the sides of the space formed by the attachment part can also be curved convexly or concavely.

Von besonderem Vorteil ist es, wenn die Seitenwand des Gehäuses und das Ansatzteil an ihren freien Kanten jeweils einen Spritzschutz tragen. Als Spritzschutz kann beispielsweise ein Borstenstreifen zum Einsatz kommen oder auch eine Spritzlippe aus einem elastischen Material.It is particularly advantageous if the side wall of the housing and the attachment part each carry a splash guard at their free edges. As a splash guard, for example, a bristle strip can be used or a spray lip made of an elastic material.

Bei einer besonders bevorzugten Ausführungsform ist die Zusatzdüse als Rotordüse ausgebildet mit einem Düsengehäuse, das in einer Stirnwand mit einem pfannenförmigen Lager für das vordere, kugelige Ende eines eine Durchgangsbohrung aufweisenden Düsenkörpers versehen ist und das ein Einsatzteil mit mindestens einer Tangentialbohrung für eine Flüssigkeit aufweist, durch die die Flüssigkeit im Düsengehäuse um die Düsengehäuselängsachse in Rotation versetzbar ist, so dass der Düsenkörper zusammen mit der rotierenden Flüssigkeit umläuft und sich dabei mit einer Anlagefläche an seinem Umfang an die Innenwand des Düsengehäuses anlegt, wobei die Längsachse des Düsenkörpers gegenüber der Längsachse des Düsengehäuses geneigt ist. Derartige Rotordüsen sind beispielsweise aus der europäischen Patentschrift EP 0 600 937 B1 bekannt. Mit ihrer Hilfe kann ein punktförmiger Flüssigkeitsstrahl erzielt werden, der auf einem Kegelmantel um die Längsachse des Düsengehäuses umläuft. Mittels derartiger Rotordüsen kann eine besonders wirkungsvolle Reinigung einer Fläche erzielt werden.In a particularly preferred embodiment, the auxiliary nozzle is designed as a rotor nozzle with a nozzle housing, which is provided in an end wall with a cup-shaped bearing for the front, spherical end of a through-bore nozzle body and having an insert part with at least one tangential bore for a liquid through the liquid in the nozzle housing is rotatable about the nozzle housing longitudinal axis, so that the nozzle body rotates together with the rotating liquid and thereby with a contact surface at its periphery against the inner wall of the nozzle housing, wherein the longitudinal axis of the nozzle body relative to the longitudinal axis of the nozzle housing inclined is. Such rotor nozzles are for example from the European patent EP 0 600 937 B1 known. With their help, a point-like liquid jet can be achieved, which rotates on a conical surface around the longitudinal axis of the nozzle housing. By means of such rotor nozzles, a particularly effective cleaning of a surface can be achieved.

Alternativ kann die Zusatzdüse auch in Form einer Flachstrahldüse ausgebildet sein oder auch in Form einer Sprühdüse.Alternatively, the additional nozzle can also be designed in the form of a flat jet nozzle or else in the form of a spray nozzle.

Es kann auch vorgesehen sein, dass der Flächenreinigungskopf mehrere Zusatzdüsen aufweist, die alternativ oder gemeinsam mit den jeweils an einem Sprüharm gehaltenen Düsen mit unter Druck stehender Reinigungsflüssigkeit beaufschlagbar sind.It can also be provided that the surface cleaning head has a plurality of additional nozzles, which can be acted upon as an alternative or together with the respective held on a spray arm nozzles with pressurized cleaning liquid.

Es kann vorgesehen sein, dass die an jeweils einem rotierenden Sprüharm gehaltenen Düsen gleichzeitig mit der Zusatzdüse mit unter Druck stehender Reinigungsflüssigkeit beaufschlagt werden, so dass sämtliche Düsen des Flächenreinigungskopfes gleichzeitig einen Flüssigkeitsstrahl auf die zu reinigende Fläche richten.It can be provided that the nozzles held on a respective rotating spray arm are acted on at the same time as the auxiliary nozzle by pressurized cleaning liquid, so that all nozzles of the surface cleaning head simultaneously direct a liquid jet onto the surface to be cleaned.

Bei einer vorteilhaften Ausgestaltung weist der Flächenreinigungskopf eine Umschalteinrichtung auf, mittels derer wahlweise die zusammen mit einem Sprüharm rotierenden Düsen und/oder die Zusatzdüse mit Reinigungsflüssigkeit beaufschlagbar sind. Dies gibt dem Benutzer die Möglichkeit, die zu reinigende Fläche wahlweise mit einem Flüssigkeitsstrahl zu beaufschlagen, der um die Drehachse der Sprüharme umläuft, und/oder mit einem Flüssigkeitsstrahl aus der Zusatzdüse. Insbesondere Eckbereiche der zu reinigenden Fläche können dadurch gezielt mittels der Zusatzdüse gereinigt werden.In an advantageous embodiment of the surface cleaning head has a switching device by means of which either the together with a spray arm rotating nozzle and / or the additional nozzle can be acted upon with cleaning liquid. This gives the user the ability to selectively apply to the surface to be cleaned with a liquid jet, which rotates about the axis of rotation of the spray arms, and / or with a liquid jet from the auxiliary nozzle. In particular, corner regions of the surface to be cleaned can be specifically cleaned by means of the additional nozzle.

Die Zusatzdüse kann als Niederdruckdüse ausgebildet sein und die jeweils an einem rotierenden Sprüharm gehaltenen Düsen können als Hochdruckdüsen ausgebildet sein. Dies gibt dem Benutzer die Möglichkeit, in einem ersten Reinigungsschritt die zu reinigende Fläche mit unter sehr hohem Druck stehender Reinigungsflüssigkeit zu beaufschlagen, um an der Fläche anhaftenden Schmutz zu lösen. Der gelöste Schmutz kann anschließend von unter geringerem Druck stehender Reinigungsflüssigkeit, die von der Zusatzdüse abgegeben wird, von der Fläche abgespült werden.The additional nozzle may be formed as a low-pressure nozzle and each held on a rotating spray arm nozzles may be formed as high-pressure nozzles. This gives the user the opportunity to apply in a first cleaning step, the surface to be cleaned with very high pressure cleaning liquid to solve adhering to the surface dirt. The dissolved dirt can then be rinsed off the surface by lower pressure cleaning fluid dispensed from the auxiliary nozzle.

Um die Handhabung des Flächenreinigungskopfes zu vereinfachen, weist die Umschalteinrichtung bei einer bevorzugten Ausgestaltung mindestens ein am Gehäuse beweglich gehaltenes Betätigungsglied auf. Durch Betätigung des Betätigungsgliedes kann die Umschalteinrichtung in unterschiedliche Schaltstellungen überführt werden. Die Umschalteinrichtung kann beispielsweise derart ausgestaltet sein, dass in einer ersten Schaltstellung lediglich die zusammen mit einem Sprüharm um deren Drehachse rotierende Düsen mit unter Druck stehender Reinigungsflüssigkeit beaufschlagt werden, wohingegen in einer zweiten Schaltstellung nur die Zusatzdüse mit unter Druck stehender Reinigungsflüssigkeit beaufschlagt wird. Günstig ist es, wenn die Umschalteinrichtung eine dritte Schaltstellung aufweist, in der sowohl die zusammen mit einem Sprüharm rotierenden Düsen als auch die Zusatzdüse mit Reinigungsflüssigkeit beaufschlagt werden. Die jeweilige Schaltstellung kann vom Benutzer mittels des mindestens einen, am Gehäuse beweglich gehaltenem Betätigungsglieds ausgewählt werden.In order to simplify the handling of the surface cleaning head, the switching device in a preferred embodiment, at least one actuator movably held on the housing. By pressing the Actuator, the switching device can be converted into different switching positions. The switching device can for example be designed such that in a first switching position only the rotating together with a spray arm around its axis of rotation nozzles are subjected to pressurized cleaning liquid, whereas in a second switching position only the auxiliary nozzle is pressurized with pressurized cleaning liquid. It is advantageous if the switching device has a third switching position, in which both the nozzles rotating together with a spray arm and the additional nozzle are supplied with cleaning liquid. The respective switching position can be selected by the user by means of the at least one, on the housing movably held actuator.

Eine besonders einfache Handhabung wird bei einer bevorzugten Ausführungsform dadurch erzielt, dass die Umschalteinrichtung zwei beweglich gehaltene Betätigungsglieder aufweist. Mittels der beiden Betätigungsglieder kann der Benutzer auf sehr einfache, intuitiv erfassbare Weise eine von zwei Schaltstellungen der Umschalteinrichtung auswählen.A particularly simple handling is achieved in a preferred embodiment in that the switching device has two movably held actuators. By means of the two actuators, the user can select one of two switching positions of the switching device in a very simple, intuitively detectable manner.

Es kann beispielsweise vorgesehen sein, dass die Umschalteinrichtung zwei Fußpedale aufweist, die jeweils bewegbar am Gehäuse gehalten sind.It can be provided, for example, that the switching device has two foot pedals, which are each held movably on the housing.

Bei einer besonders bevorzugten Ausführungsform weist die Umschalteinrichtung ein vom Benutzer betätigbares Ventil auf, wobei mittels des Ventils eine Strömungsverbindung von einem Anschlussteil des Flächenreinigungskopfes wahlweise zu den jeweils an einem Sprüharm gehaltenen Düsen und/oder zu der Zusatzdüse freigebbar ist. Weist das Ventil nur zwei Schaltstellungen auf, so können alternativ die jeweils an einem Sprüharm gehaltenen Düsen oder die Zusatzdüse mit unter Druck stehender Reinigungsflüssigkeit versorgt werden. Es kann allerdings auch vorgesehen sein, dass das Ventil drei Schaltstellungen umfasst, so dass in der dritten Schaltstellung sämtliche Düsen gleichzeitig mit Reinigungsflüssigkeit beaufschlagbar sind.In a particularly preferred embodiment, the switching device on a user-operable valve, wherein by means of the valve, a flow connection of a connection part of the surface cleaning head is selectively releasable to each held on a spray arm nozzles and / or to the auxiliary nozzle. If the valve has only two switching positions, alternatively the nozzles held on a spray arm or the auxiliary nozzle is supplied with pressurized cleaning fluid. However, it can also be provided that the valve comprises three switching positions, so that in the third switching position all nozzles can be acted upon simultaneously with cleaning liquid.

Günstig ist es, wenn das Ventil einen Ventilkörper aufweist, der in einer Ventilaufnahme beweglich gehalten ist und zwischen einer ersten Endstellung, in der er die Strömungsverbindung zu den jeweils an einem Sprüharm gehaltenen Düsen freigibt und die Strömungsverbindung zur Zusatzdüse sperrt und einer zweiten Endstellung, in der er die Strömungsverbindung zu den jeweils an einem Sprüharm gehaltenen Düsen sperrt und die Strömungsverbindung zur Zusatzdüse freigibt, hin und her bewegbar ist. Die beiden Endstellungen können jeweils durch ein Anschlagelement vorgegeben werden, so dass der Ventilkörper auf einfache Weise zwischen seinen beiden Endstellungen hin und her bewegt werden kann, um die jeweils gewünschte Schaltstellung der Umschalteinrichtung zu erreichen. Dies erleichtert die Bedienung des Flächenreinigungskopfes.It is advantageous if the valve has a valve body which is movably held in a valve receptacle and between a first end position in which it releases the flow connection to each held on a spray arm nozzles and blocks the flow connection to the additional nozzle and a second end position, in he locks the flow connection to each held on a spray arm nozzles and the flow connection to the additional nozzle, reciprocally movable. The two end positions can each be predetermined by a stop element, so that the valve body can be moved in a simple manner between its two end positions back and forth in order to achieve the respective desired switching position of the switching device. This facilitates the operation of the surface cleaning head.

Von Vorteil ist es, wenn der Ventilkörper mit einer Druckkraft in Richtung seiner jeweils eingenommenen Endstellung beaufschlagbar ist. Bei einer derartigen Ausgestaltung ist das Ventil selbsthaltend ausgebildet, indem der Ventilkörper in seiner einmal eingenommenen Endstellung aufgrund der auf ihn einwirkenden Druckkraft so lange verharrt, bis er vom Benutzer gezielt in die andere Endstellung überführt wird. Durch die Bereitstellung einer den Ventilkörper beaufschlagenden Druckkraft kann der Einsatz zusätzlicher Rückstellelemente, beispielsweise der Einsatz von Federelementen, entfallen.It is advantageous if the valve body can be acted upon by a pressure force in the direction of its respectively assumed end position. In such an embodiment, the valve is self-holding, by the valve body remains in its once occupied end position due to the pressure force acting on it until it is selectively transferred by the user in the other end position. By providing a pressure force acting on the valve body, the use of additional restoring elements, for example the use of spring elements, can be dispensed with.

Bei einer konstruktiv besonders einfachen Ausgestaltung ist die Ventilaufnahme als Ventilbohrung und der Ventilkörper als Ventilkolben ausgebildet, wobei der Ventilkolben in der Ventilbohrung verschiebbar gehalten ist. Durch Verschieben des Ventilkolbens können auf einfache Weise die unterschiedlichen Schaltstellungen des Ventils eingestellt werden.In a structurally particularly simple embodiment, the valve seat is formed as a valve bore and the valve body as a valve piston, wherein the valve piston is slidably held in the valve bore. By moving the valve piston, the different switching positions of the valve can be adjusted in a simple manner.

Von besonderem Vorteil ist es, wenn die Ventilbohrung als Durchgangsbohrung ausgestaltet ist, die vom Ventilkolben durchgriffen wird. Der Ventilkolben kann dadurch mit seinen Endbereichen über die Ventilbohrung hervorstehen und durch Kraftbeaufschlagung der hervorstehenden Endbereiche auf einfache Weise hin und her geschoben werden. Hierbei ist es günstig, wenn der Ventilkolben an mindestens einem hervorstehenden Endbereich eine radiale Erweiterung trägt, beispielsweise einen umlaufenden Wulst, der als eine Endstellung definierender Anschlag dient.It is particularly advantageous if the valve bore is designed as a through hole, which is penetrated by the valve piston. The valve piston can thereby project with its end regions over the valve bore and be pushed back and forth by applying force to the protruding end portions in a simple manner. It is advantageous if the valve piston carries at least one protruding end portion a radial extension, for example, a circumferential bead, which serves as an end position defining stop.

Vorzugsweise ist der Ventilkolben um eine senkrecht zur Drehachse des mindestens einen Sprüharms ausgerichtete Ventilachse verschiebbar. Die Drehachse des mindestens einen Sprüharms kann beispielsweise senkrecht zu der zu reinigenden Fläche ausgerichtet sein. Bei Reinigung einer Bodenfläche nimmt die Drehachse des mindestens einen Sprüharms somit eine vertikale Ausrichtung ein und die Ventilachse ist horizontal ausgerichtet. Es hat sich gezeigt, dass die die Handhabung des Flächenreinigungskopfes vereinfacht.Preferably, the valve piston is displaceable about a valve axis aligned perpendicular to the axis of rotation of the at least one spray arm. The axis of rotation of the at least one spray arm may, for example, be oriented perpendicular to the surface to be cleaned. When cleaning a bottom surface, the axis of rotation of the at least one spray arm thus assumes a vertical orientation and the valve axis is aligned horizontally. It has been found that simplifies the handling of the surface cleaning head.

Der Ventilkolben ist bei einer vorteilhaften Ausführungsform mittels zweier Betätigungsglieder in einander entgegengerichtete Richtungen verschiebbar, wobei zwischen den Betätigungsgliedern und dem Ventilkolben jeweils ein Kraftübertragungsglied angeordnet ist. Die Kraftübertragungsglieder ermöglichen eine Umlenkung der von den Betätigungsgliedern ausgeübten Betätigungskraft, so dass die Beaufschlagung des Ventilkolbens mit senkrecht zur Ventilachse ausgerichteten Kraftkomponenten gering gehalten werden kann. Die Gefahr, dass der Ventilkolben in der Ventilbohrung verkantet, wird dadurch vermindert.The valve piston is displaceable in an advantageous embodiment by means of two actuators in opposite directions, wherein between the actuators and the valve piston in each case a force transmission member is arranged. The power transmission members allow a deflection of the actuating force exerted by the actuators, so that the loading of the valve piston can be kept low with aligned perpendicular to the valve axis force components. The risk that the valve piston canted in the valve bore is thereby reduced.

Günstig ist es, wenn die Betätigungsglieder und die Kraftübertragungsglieder schwenkbar gelagert sind. Hierbei hat es sich als günstig erwiesen, wenn die Schwenkachse der Kraftübertragungsglieder parallel und in Richtung des Ventilkolbens versetzt zu den Schwenkachsen der Betätigungsglieder ausgerichtet sind.It is advantageous if the actuators and the power transmission members are pivotally mounted. It has proved to be advantageous when the pivot axis of the power transmission elements are aligned parallel and offset in the direction of the valve piston to the pivot axes of the actuators.

Die Betätigungsglieder können beispielsweise als verschwenkbare Fußpedale ausgestaltet sein, deren Schwenkachsen parallel zur Längsachse des Gehäuses ausgerichtet ist, wobei die Fußpedale an der Gehäuseoberseite an das Gehäuse angelenkt sind.The actuators can be configured, for example, as pivotable foot pedals whose pivot axes are aligned parallel to the longitudinal axis of the housing, wherein the foot pedals are hinged to the housing top to the housing.

Die Kraftübertragungsglieder können als Schwenkarme ausgebildet sein, deren Schwenkachse unterhalb der Schwenkachse der Fußpedale angeordnet und parallel zu diesen ausgerichtet sind. Hierbei können die Schwenkarme jeweils in einer Lagerschale gehalten sein, die oberhalb eines aus der Ventilbohrung herausragenden Endbereichs des Ventilkolbens angeordnet ist. Durch Verschwenken der Fußpedale kann dann eine Betätigungskraft generiert werden, die vom jeweiligen Kraftübertragungsglied auf den Ventilkolben übertragen wird, wobei auf den Ventilkolben praktisch nur koaxial zur Ventilachse ausgerichtete Kraftkomponenten einwirken.The force transmission members may be formed as pivot arms whose pivot axis are arranged below the pivot axis of the foot pedals and aligned parallel thereto. In this case, the pivot arms can be held in each case in a bearing shell, which is arranged above a protruding from the valve bore end portion of the valve piston. By pivoting the foot pedals, an actuating force can then be generated, which is transmitted from the respective force transmission member to the valve piston, wherein the valve piston practically only coaxial with the valve axis aligned force components act.

Bei einer besonders bevorzugten Ausgestaltung des erfindungsgemäßen Flächenreinigungskopfes ist der mindestens eine Sprüharm an einer Zuleitung drehbar gehalten, die relativ zu einem zentralen Verteilerteil höhenverstellbar ist, wobei das Verteilerteil die Umschalteinrichtung aufweist. Der mindestens eine Sprüharm ist somit zusammen mit der Zuleitung höhenverstellbar. Dies ermöglicht es, den Abstand der um die Drehachse der Sprüharme umlaufenden Düsen zur zu reinigenden Fläche zu variieren. Soll die zu reinigende Fläche mit einem sehr intensiven Flüssigkeitsstrahl beaufschlagt werden, so kann ein möglichst geringer Abstand zwischen den um die Drehachse umlaufenden Düsen und der zu reinigenden Fläche gewählt werden. Soll jedoch eine empfindliche Fläche gereinigt werden, so kann der Benutzer einen größeren Abstand zwischen den umlaufenden Düsen und der Fläche wählen, indem er die Zuleitung zusammen mit dem mindestens einen Sprüharm relativ zum zentralen Verteilerteil verstellt.In a particularly preferred embodiment of the surface cleaning head according to the invention, the at least one spray arm on a supply line rotatably supported, which is adjustable in height relative to a central distributor part, wherein the distributor part has the switching device. The at least one spray arm is thus height adjustable together with the supply line. This makes it possible to vary the distance of the rotating around the axis of rotation of the spray arms nozzles to be cleaned surface. If the surface to be cleaned is subjected to a very intense jet of liquid, the smallest possible distance between the nozzles rotating around the axis of rotation and the surface to be cleaned can be selected. However, if a sensitive surface to be cleaned, the user can choose a greater distance between the rotating nozzles and the surface by adjusting the supply line together with the at least one spray arm relative to the central distributor part.

Am zentralen Verteilerteil kann das Gehäuse des Flächenreinigungskopfes festgelegt sein, beispielsweise kann vorgesehen sein, dass das Gehäuse mit dem Verteilerteil verrastbar oder verschraubbar ist.At the central distributor part, the housing of the surface cleaning head can be fixed, for example, it can be provided that the housing can be latched or screwed to the distributor part.

Die Zuleitung ist vorzugsweise als Rohrstück ausgestaltet, das in einer Bohrung des Verteilerteils verschiebbar gehalten ist. Vorzugsweise ist das Rohrstück aus Messing hergestellt. Das Verteilerteil kann aus einem Kunststoffmaterial gefertigt sein, und auch für die Herstellung der Sprüharme kann ein Kunststoffmaterial zum Einsatz kommen.The supply line is preferably designed as a pipe piece which is held displaceably in a bore of the distributor part. Preferably, the pipe section is made of brass. The distributor part can be made of a plastic material, and also for the production of the spray arms, a plastic material can be used.

Die Zuleitung ist bevorzugt drehfest zum Verteilerteil gehalten und die Sprüharme sind relativ zur Zuleitung um die Drehachse verdrehbar.The supply line is preferably rotatably held to the distributor part and the spray arms are rotatable relative to the supply line about the axis of rotation.

Der Flächenreinigungskopf weist bevorzugt ein Zufuhrrohr auf, das an eine Flüssigkeitszufuhrleitung anschließbar ist und das in das Verteilerteil einmündet. An das Zufuhrrohr ist beispielsweise die Druckleitung eines Hochdruckreinigungsgerätes anschließbar, so dass der Flächenreinigungskopf über das Zufuhrrohr und das sich an dieses anschließende Verteilerteil mit unter Druck stehender Reinigungsflüssigkeit versorgt werden kann.The surface cleaning head preferably has a supply pipe which can be connected to a liquid supply line and which opens into the distributor part. For example, the pressure line of a high-pressure cleaning device can be connected to the supply pipe so that the surface cleaning head can be supplied with pressurized cleaning liquid via the supply pipe and the distributor part adjoining this.

Die Zusatzdüse steht vorzugsweise über eine Verbindungsleitung mit dem Verteilerteil in Strömungsverbindung. Hierbei kann eine starre Verbindung zum Einsatz kommen in Form eines Verbindungsrohres, es kann jedoch auch eine flexible Verbindung in Form einer Verbindungsschlauches vorgesehen sein.The additional nozzle is preferably in fluid communication with the distributor part via a connecting line. In this case, a rigid connection can be used in the form of a connecting tube, but it can also be provided a flexible connection in the form of a connecting tube.

Die Zusatzdüse kann relativ zum zentralen Verteilerteil in der Höhe verstellbar sein, so dass der Benutzer den Abstand der Zusatzdüse zur zu reinigenden Fläche verändern kann.The auxiliary nozzle can be adjustable in height relative to the central distributor part, so that the user can change the distance between the additional nozzle and the surface to be cleaned.

Von besonderem Vorteil ist es, wenn das Zufuhrrohr im Verteilerteil verschwenkbar gelagert ist, denn dies ermöglicht es einem Benutzer, die Ausrichtung des Zufuhrrohres relativ zum Verteilerteil zu verändern.It is particularly advantageous if the supply pipe is pivotably mounted in the distributor part, because this allows a user to change the orientation of the supply pipe relative to the distributor part.

Besonders vorteilhaft ist es, wenn das Zufuhrrohr im Verteilerteil um eine quer zur Drehachse des mindestens einen Sprüharms ausgerichtete Schwenkachse verschwenkbar gelagert ist. Bei Reinigung einer Bodenfläche ist die Drehachse des mindestens einen Sprüharms vorzugsweise vertikal ausgerichtet und die Schwenkachse des Zufuhrrohrs nimmt eine horizontale Ausrichtung ein. Dies erleichtert die Handhabung des Flächenreinigungskopfes.It is particularly advantageous if the supply pipe is pivotably mounted in the distributor part about a pivot axis aligned transversely to the axis of rotation of the at least one spray arm. When cleaning a bottom surface, the axis of rotation of the at least one spray arm is preferably oriented vertically and the pivot axis of the feed tube assumes a horizontal orientation. This facilitates the handling of the surface cleaning head.

Zur Höhenverstellung der Zuleitung des mindestens einen, an der Zuleitung gelagerten Sprüharms weist der Flächenreinigungskopf bevorzugt ein höhenverstellbares Schiebeteil auf, das am Verteilerteil unverdrehbar, jedoch koaxial zur Drehachse des mindestens einen Sprüharms verschiebbar gehalten ist und das die Zuleitung trägt. Die Zuleitung kann somit zusammen mit dem Schiebeteil koaxial zur Drehachse des mindestens einen Sprüharms relativ zum Verteilerteil verschoben werden.For height adjustment of the supply line of the at least one, mounted on the supply line spray arm, the surface cleaning head preferably has a height-adjustable sliding part, which is non-rotatable on the distributor part, but coaxial is held displaceably to the axis of rotation of the at least one spray arm and that carries the supply line. The supply line can thus be moved together with the sliding part coaxial with the axis of rotation of the at least one spray arm relative to the distributor part.

Das Schiebeteil ist gegen Drehung relativ zum Verteilerteil gesichert, es ist jedoch relativ zum Verteilerteil koaxial zur Drehachse des mindestens einen Sprüharms verschiebbar.The sliding part is secured against rotation relative to the distributor part, but it is displaceable relative to the distributor part coaxially with the axis of rotation of the at least one spray arm.

Vorzugsweise durchgreift das Schiebeteil das Verteilerteil und ist mittels eines Höhenverstellgliedes relativ zum Verteilerteil verschiebbar.Preferably, the sliding part passes through the distributor part and is displaceable relative to the distributor part by means of a height adjustment member.

Bei einer vorteilhaften Ausführungsform trägt ein über das Verteilerteil nach oben überstehender Endbereich des Schiebeteils ein Außengewinde und das Höhenverstellglied weist eine auf das Außengewinde des Schiebeteils aufgeschraubte Gewindehülse auf, die am Gehäuse verdrehbar und unverschieblich gehalten ist. Durch Verdrehen der Gewindehülse kann das Schiebeteil zusammen mit der am Schiebeteil festgelegten Zuleitung und dem mindestens einen, an der Zuleitung drehbar gelagerten Sprüharm in der Höhe verstellt werden. Die Gewindehülse ist vorzugsweise an der Gehäuseoberseite angeordnet und daher für den Benutzer auf einfache Weise zugänglich.In an advantageous embodiment, an end portion of the sliding part protruding upwards beyond the distributor part bears an external thread, and the height adjustment element has a threaded sleeve screwed onto the external thread of the sliding part, which is held rotatably and immovably on the housing. By turning the threaded sleeve, the sliding part can be adjusted in height together with the supply line fixed to the sliding part and the at least one, on the supply line rotatably mounted spray arm. The threaded sleeve is preferably arranged on the upper side of the housing and therefore accessible to the user in a simple manner.

Die nachfolgende Beschreibung einer bevorzugten Ausführungsform der Erfindung dient im Zusammenhang mit der Zeichnung der näheren Erläuterung. Es zeigen:

Figur 1:
eine perspektivische Darstellung eines erfindungsgemäßen Flächenreinigungskopfes;
Figur 2:
eine teilweise aufgetrennte Draufsicht auf den Flächenreinigungskopf aus Figur 1;
Figur 3:
eine vergrößerte Darstellung von Detail A aus Figur 2;
Figur 4:
eine Schnittansicht längs der Linie 4-4 in Figur 2 und
Figur 5:
eine Schnittansicht längs der Linie 5-5 in Figur 2.
The following description of a preferred embodiment of the invention serves in conjunction with the drawings for further explanation. Show it:
FIG. 1:
a perspective view of a surface cleaning head according to the invention;
FIG. 2:
a partially separated plan view of the surface cleaning head FIG. 1 ;
FIG. 3:
an enlarged view of detail A from FIG. 2 ;
FIG. 4:
a sectional view taken along the line 4-4 in FIG. 2 and
FIG. 5:
a sectional view taken along the line 5-5 in FIG. 2 ,

In der Zeichnung ist schematisch ein insgesamt mit dem Bezugszeichen 10 belegter erfindungsgemäßer Flächenreinigungskopf dargestellt mit einem haubenförmigen, nach unten, in Richtung auf eine zu reinigende Fläche offenen Gehäuse 11, das ein Gehäuseunterteil 12 und ein Gehäuseoberteil 13 aufweist. Das Gehäuseunterteil 12 umfasst eine in der Draufsicht kreisringförmige, in sich geschlossene Seitenwand 15, die von einer Zwischenwand 16 nach unten absteht und an ihrer freien Kante 17 einen umlaufenden Spritzschutz 18 trägt. Das Gehäuseunterteil 12 umfasst außerdem ein außenseitig an die Seitenwand 15 angesetztes Ansatzteil 20, das in der Draufsicht im Wesentlichen V-förmig ausgebildet ist mit einem ersten Schenkel 21 und einem zweiten Schenkel 22, die eine Gehäusespitze 23 definieren und an ihrer unteren freien Kante 24 ebenfalls einen Spritzschutz 25 tragen.In the drawing, a total occupied by the reference numeral 10 inventive surface cleaning head is shown schematically with a dome-shaped, downwardly, in the direction of a surface to be cleaned open housing 11, which has a lower housing part 12 and a housing upper part 13. The lower housing part 12 comprises a circular in plan view, self-contained side wall 15 which projects from an intermediate wall 16 down and carries at its free edge 17 a circumferential splash guard 18. The lower housing part 12 also comprises an externally attached to the side wall 15 attachment portion 20 which is formed in plan view substantially V-shaped with a first leg 21 and a second leg 22 which define a housing tip 23 and also carry a splash guard 25 at its lower free edge 24.

Die umlaufende Seitenwand 15 definiert in Kombination mit der Zwischenwand 16 einen Hauptraum 27 des Gehäuses 11 und das Ansatzteil 20 definiert in Kombination mit dem vom Ansatzteil 20 übergedeckten Bereich der Seitenwand 15 einen Nebenraum 28 des Gehäuses 11.The circumferential side wall 15 defines, in combination with the intermediate wall 16, a main space 27 of the housing 11 and the attachment part 20 defines, in combination with the area of the side wall 15 covered by the attachment part 20, an adjoining space 28 of the housing 11.

Das Gehäuseoberteil 13 umfasst eine Abdeckung 30, die sich praktisch über die gesamte Länge des Gehäuseunterteils 12 bis in den Bereich der Gehäusespitze 23, quer zur Längserstreckung des Flächenreinigungskopfes 10 aber nur über einen Teilbereich des Gehäuseunterteils 12 erstreckt. Außerdem umfasst das Gehäuseoberteil 13 zwei bogenförmige Handgriffe 31, 32, die mit der Abdeckung 30 einstückig verbunden sind und vom Benutzer mit der Hand ergriffen werden können. Die Abdeckung 30 definiert in Kombination mit dem von der Abdeckung 30 überdeckten Bereich der Zwischenwand 16 eine Verteilerkammer 34 des Gehäuses 11. Von der Verteilerkammer 34 führt ein Düsenschacht 35 in den Nebenraum 28.The housing upper part 13 comprises a cover 30, which extends virtually over the entire length of the housing lower part 12 into the region of the housing tip 23, transversely to the longitudinal extension of the surface cleaning head 10 but only over a partial region of the housing lower part 12. In addition, the upper housing part 13 comprises two arcuate handles 31, 32, which are integrally connected to the cover 30 and can be grasped by the user by hand. The cover 30, in combination with the area of the intermediate wall 16 covered by the cover 30, defines a distribution chamber 34 of the housing 11. From the distribution chamber 34, a nozzle shaft 35 leads into the secondary space 28.

In der Verteilerkammer 34 ist ein zentrales Verteilerteil 37 angeordnet, mit dem das Gehäuseunterteil 12 mittels Verbindungsschrauben 38 verschraubt ist. Das Gehäuseunterteil 12 wiederum ist mittels Verbindungsschrauben 39 mit dem Gehäuseoberteil 13 verschraubt.In the distribution chamber 34, a central distributor part 37 is arranged, with which the lower housing part 12 is screwed by means of connecting screws 38. The lower housing part 12 in turn is screwed by means of connecting screws 39 with the upper housing part 13.

In das Verteilerteil 34 mündet ein Zufuhrrohr 41, das um eine quer zur Rohrlängsachse 42 ausgerichtete Schwenkachse 43 verschwenkbar im Verteilerteil 34 gelagert ist. An seinem dem Verteilerteil 37 abgewandten freien Ende trägt das Zufuhrrohr 41 ein Verbindungselement 45, so dass an das Zufuhrrohr 41 eine an sich bekannte und deshalb in der Zeichnung nicht dargestellte Druckleitung eines Hochdruckreinigungsgerätes angeschlossen werden kann.In the distributor part 34 opens a supply pipe 41 which is mounted pivotably about a transversely to the pipe longitudinal axis 42 aligned pivot axis 43 in the distributor part 34. At its side facing away from the distributor part 37 carries free end the supply pipe 41 is a connecting element 45, so that a known per se and therefore not shown in the drawing pressure line of a high-pressure cleaner can be connected to the feed pipe 41.

Das Zufuhrrohr 41 steht über einen koaxial zur Schwenkachse 43 ausgerichteten ersten Verbindungskanal 47 und einen sich an diesen in Strömungsrichtung anschließenden, schräg zur Rohrlängsachse 42 ausgerichteten zweiten Verbindungskanal 48 mit einer vom Verteilerteil 37 ausgebildeten Ventilaufnahme in Strömungsverbindung, die in Form einer durchgehenden Ventilbohrung 50 ausgestaltet ist. Die Ventilbohrung 50 weist mehrere Abschnitte mit unterschiedlichem Durchmesser auf. An einen ersten Endabschnitt 51 der Ventilbohrung 50 schließt sich über eine Stufe 52 ein erster Mittelabschnitt 53 mit verringertem Durchmesser an, der über eine konische Verengung 55 in einen zweiten Mittelabschnitt 56 mit nochmals verringertem Durchmesser übergeht. An den zweiten Mittelabschnitt 56 schließt sich über eine konische Erweiterung 58 ein zweiter Endabschnitt 59 der Ventilbohrung 50 an.The supply pipe 41 is connected via a coaxially to the pivot axis 43 aligned first connecting channel 47 and adjoining this in the flow direction, obliquely to the pipe longitudinal axis 42 aligned second connecting channel 48 with a formed by the distributor part 37 valve seat in flow communication, which is designed in the form of a continuous valve bore 50 , The valve bore 50 has a plurality of sections of different diameter. To a first end portion 51 of the valve bore 50 is connected via a step 52, a first central portion 53 of reduced diameter, which merges via a conical constriction 55 in a second central portion 56 with a further reduced diameter. A second end section 59 of the valve bore 50 adjoins the second middle section 56 via a conical extension 58.

Die Ventilbohrung 50 wird von einem Ventilkörper durchgriffen, der in Form eines Ventilkolbens 61 ausgestaltet ist und in Längsrichtung der Ventilbohrung 50, das heißt in Richtung einer Ventilachse 62, die parallel zur Schwenkachse 43 des Zufuhrrohrs 41 ausgerichtet ist, hin und her verschiebbar ist.The valve bore 50 is penetrated by a valve body, which is designed in the form of a valve piston 61 and in the longitudinal direction of the valve bore 50, that is in the direction of a valve axis 62, which is aligned parallel to the pivot axis 43 of the feed tube 41, back and forth.

Der Ventilkolben 41 weist im Bereich des ersten Endabschnittes 61 einen umlaufenden Bund 64 auf, der bei entsprechender axialer Verschiebung des Ventilkolbens 61 an der Stufe 52 zur Anlage gelangt. Die Stufe 52 bildet somit einen ersten Anschlag aus, der eine Endstellung des verschiebbaren Ventilkolbens 61 definiert.The valve piston 41 has in the region of the first end portion 61 on a peripheral collar 64, which comes with a corresponding axial displacement of the valve piston 61 at the level 52 to the plant. The step 52 thus forms a first stop which defines an end position of the displaceable valve piston 61.

An seinem über den zweiten Endabschnitt 59 überstehenden Endbereich weist der Ventilkolben 61 einen Ringwulst 65 auf, dessen Außendurchmesser größer ist als der Innendurchmesser des zweiten Endabschnittes 59. Dies hat zur Folge, dass der Ringwulst 65, wie in Figur 3 dargestellt, bei geeigneter axialer Verschiebung des Ventilkolbens 61 außenseitig am Verteilerteil 37 zur Anlage gelangt. Der Ringwulst 65 bildet somit einen zweiten Anschlag aus, der ebenfalls eine Endstellung des verschiebbaren Ventilkolbens 61 definiert.At its end region projecting beyond the second end section 59, the valve piston 61 has an annular bead 65, the outer diameter of which is greater than the inner diameter of the second end section 59. As a result, the annular bead 65, as in FIG FIG. 3 shown, with suitable axial displacement of the valve piston 61 on the outside of the distributor part 37 comes to rest. The annular bead 65 thus forms a second stop, which also defines an end position of the displaceable valve piston 61.

Der Ventilkolben 61 ist stufig ausgebildet, wobei er in einem mittigen Bereich einen geringeren Durchmesser aufweist als an seinen Endbereichen. Innerhalb des ersten Mittelabschnittes 53 verjüngt sich der Ventilkolben 61, wobei er in einem Bereich erweiterten Durchmessers eine erste Ringnut trägt, in der ein erster O-Ring angeordnet ist. Mittels des ersten O-Rings 67 liegt der Ventilkolben 61 unabhängig von seiner jeweils eingenommenen Stellung innerhalb der Ventilbohrung 50 dichtend an der Wand des ersten Mittelabschnittes 63 an.The valve piston 61 is formed in stages, wherein it has a smaller diameter in a central region than at its end regions. Within the first central portion 53, the valve piston 61 tapers, wherein it carries in a region of enlarged diameter a first annular groove, in which a first O-ring is arranged. By means of the first O-ring 67, the valve piston 61 is sealingly against the wall of the first central portion 63 irrespective of its respectively assumed position within the valve bore 50.

Im Abstand zum ersten O-Ring 67 trägt der Ventilkolben 61, dem umlaufenden Bund 64 abgewandt, in einem Bereich verringerten Außendurchmessers eine weitere Ringnut, in der ein zweiter O-Ring 68 angeordnet ist. Der Durchmesser des zweiten O-Rings 68 ist geringer als der Durchmesser des ersten O-Rings 67. Er ist derart gewählt, dass der Ventilkolben 61 bei Verschiebung in die den Ringwulst 65 zugewandte Richtung dichtend an der Wand des zweiten Mittelabschnitts 56 anliegt, wohingegen er bei Verschiebung in die dem Ringwulst 65 abgewandte Richtung im Abstand zur Wand des ersten Mittelabschnittes 53 der Ventilbohrung 50 angeordnet ist, wie dies in Figur 3 dargestellt ist.At a distance from the first O-ring 67, the valve piston 61 faces away from the circumferential collar 64 and, in a region of reduced outside diameter, carries a further annular groove in which a second O-ring 68 is arranged. The diameter of the second O-ring 68 is smaller than the diameter of the first O-ring 67. It is chosen such that the valve piston 61 when displaced in the direction of the annular bead 65 sealingly against the wall of the second middle portion 56, whereas he is arranged at a distance in the direction away from the annular bead 65 at a distance from the wall of the first central portion 53 of the valve bore 50, as shown in FIG FIG. 3 is shown.

An den zweiten O-Ring 68 schließt sich in dem Bereich des Ventilkolbens 61 mit verringertem Durchmesser eine weitere Ringnut an, die einen dritten O-Ring 69 aufnimmt, dessen Durchmesser gleich groß gewählt ist wie der Durchmesser des zweiten O-Rings 68. Wird der Ventilkolben 61 in die dem Ringwulst 65 abgewandte Richtung verschoben, wie dies in Figur 3 dargestellt ist, so liegt der Ventilkolben 61 über den dritten O-Ring 69 in einem der konischen Erweiterung 68 benachbarten Bereich an der Wand des zweiten Mittelabschnitts 56 an.To the second O-ring 68 is followed in the region of the valve piston 61 of reduced diameter, a further annular groove which receives a third O-ring 69, whose diameter is chosen to be the same size as the diameter of the second O-ring 68th Der Valve piston 61 is displaced in the direction away from the annular bead 65, as shown in FIG. 3 is shown, the valve piston 61 rests against the wall of the second central section 56 via the third O-ring 69 in a region adjacent to the conical extension 68.

Im Abstand zum dritten O-Ring 69 weist der Ventilkolben 68 in einem Bereich mit erweitertem Durchmesser eine weitere Ringnut auf, die einen vierten O-Ring 70 aufnimmt. Der Durchmesser des vierten O-Rings 70 stimmt mit dem Durchmesser des ersten O-Rings 67 überein. Mittels des vierten O-Rings 70 liegt der Ventilkolben 61 unabhängig von seiner jeweiligen Stellung dichtend an der Wand des zweiten Endabschnittes 69 an.At a distance from the third O-ring 69, the valve piston 68 in a region with an enlarged diameter, a further annular groove which receives a fourth O-ring 70. The diameter of the fourth O-ring 70 coincides with the diameter of the first O-ring 67. By means of the fourth O-ring 70, the valve piston 61 bears against the wall of the second end section 69, regardless of its respective position.

Der zweite Verbindungskanal 48 mündet ungefähr mittig in den zweiten Mittelabschnitt 56 der Ventilbohrung 50. Der konischen Verengung 55 unmittelbar benachbart schließt sich an den ersten Mittelabschnitt 53 der Ventilbohrung 50 ein dritter Verbindungskanal 73 an, der die Ventilbohrung 50 mit einer nach unten gerichteten Sackbohrung 74 des Verteilerteils 37 verbindet. Der konischen Erweiterung 58 unmittelbar benachbart schließt sich an den zweiten Endabschnitt 59 ein vierter Verbindungskanal 76 an, der die Ventilbohrung 50 mit einem Verbindungsrohr 77 verbindet. Über das Verbindungsrohr 77 steht das Verteilerteil 37 mit einer im Düsenschacht 35 angeordneten, nachfolgend näher erläuterten Zusatzdüse 80 in Strömungsverbindung.The second connection channel 48 opens approximately centrally into the second middle section 56 of the valve bore 50. The conical constriction 55 immediately adjoins the first center section 53 of the valve bore 50, a third connection channel 73, the valve bore 50 with a downwardly directed blind bore 74 of Distributor part 37 connects. The conical extension 58 immediately adjacent to the second end portion 59 connects to a fourth connecting channel 76, which connects the valve bore 50 with a connecting tube 77. Via the connecting pipe 77, the distributor part 37 is in flow connection with an additional nozzle 80, which is arranged in the nozzle shaft 35 and explained in more detail below.

In die Sackbohrung 74 des Verteilerteils 37 taucht eine Zuleitung 82 ein, die in Form eines Messingrohres ausgebildet ist und mittels eines O-Ringes 83 gegenüber der Wand der Sackbohrung 74 abgedichtet ist. Innerhalb der Sackbohrung 74 kann die Zuleitung 82 in Längsrichtung verschoben werden.Into the blind bore 74 of the distributor part 37, a supply line 82 is immersed, which is designed in the form of a brass tube and is sealed by means of an O-ring 83 against the wall of the blind bore 74. Within the blind bore 74, the supply line 82 can be moved in the longitudinal direction.

An ihrem dem O-Ring 83 abgewandten Endbereich trägt die Zuleitung 82 zwei einander diametral gegenüberliegende Sprüharme 85, 86, die jeweils einen Strömungskanal 88 bzw. 89 aufweisen und an ihrem freien Ende eine Düse 91 bzw. 92 tragen. Diese Düsen 91, 92 erzeugen einen schräg nach unten gerichteten Flüssigkeitsstrahl einer Reinigungsflüssigkeit, die beim Austritt aus den Düsen 91, 92 durch Reaktionskräfte ein Drehmoment auf die Sprüharme 85 bzw. 86 ausüben und diese dadurch in Drehung versetzen. Die Drehachse 93 ist koaxial zur Längsachse der Zuleitung 82 und der Längsachse der Sackbohrung 74 ausgerichtet.At its end region facing away from the O-ring 83, the supply line 82 carries two diametrically opposed spray arms 85, 86, each having a flow channel 88 and 89, respectively, and carrying at their free end a nozzle 91 and 92, respectively. These nozzles 91, 92 produce an obliquely downwardly directed liquid jet of a cleaning liquid which, upon exiting the nozzles 91, 92, exerts a torque on the spray arms 85 and 86, respectively, by reaction forces and thereby causes them to rotate. The axis of rotation 93 is aligned coaxially with the longitudinal axis of the feed line 82 and the longitudinal axis of the blind bore 74.

Oberhalb der Sprüharme 85, 86 trägt die Zuleitung 82 ein Außengewinde 95, über das die Zuleitung 82 mit einem gabelförmigen Schiebeteil 97 verbunden ist. Das Schiebeteil 97 umfasst einen schaftartigen Gabelkopf 98 mit einer durchgehenden Gewindebohrung 99, über die die Zuleitung 82 mit dem Schiebeteil 97 verbunden ist. Außerdem weist das Schiebeteil 97 zwei Gabelzinken 101, 102 auf, die sich den Sprüharmen 85, 86 abgewandt nach oben an den Gabelkopf 98 anschließen und jeweils einen sichelförmigen Durchgang 105 bzw. 106 des Verteilerteils 37 durchgreifen. An ihrem dem Gabelkopf 98 abgewandten Endbereich tragen die Gabelzinken 101, 102 ein Außengewinde 108 mit sehr hoher Steigung. Auf dieses Außengewinde 108 ist eine Gewindehülse 110 eines Höhenverstellgliedes 111 aufgeschraubt. Die Gewindehülse 110 ist an ihrem oberen Ende 112 verschlossen und einstückig mit einem haubenförmigen Griffteil 113 verbunden, das mit einem nach außen abstehenden Ringflansch 114 einen Rand 116 einer Öffnung der Abdeckung 30 untergreift. Durch Verdrehen des Griffteils 113 um die Drehachse 93 kann das Schiebeteil 97 zusammen mit der Zuleitung 82 und den Sprüharmen 85, 86 koaxial zur Drehachse 93 verschoben werden, um den Abstand, den die Düsen 91, 92 zu einer zu reinigenden Fläche einnehmen, zu variieren.Above the spray arms 85, 86, the feed line 82 carries an external thread 95, via which the feed line 82 is connected to a fork-shaped sliding part 97. The sliding part 97 comprises a shaft-like fork head 98 with a continuous threaded hole 99, via which the supply line 82 is connected to the sliding part 97. In addition, the sliding part 97 has two forks 101, 102, the spray arms 85, 86 facing away from the top of the clevis 98 and each pass through a sickle-shaped passage 105 and 106 of the distributor part 37. At their end region facing away from the clevis 98, the forks 101, 102 carry an external thread 108 with a very high pitch. On this external thread 108, a threaded sleeve 110 of a height adjustment member 111 is screwed. The threaded sleeve 110 is closed at its upper end 112 and integrally connected to a hood-shaped handle portion 113 which engages with an outwardly projecting annular flange 114 an edge 116 of an opening of the cover 30. By rotating the grip portion 113 about the rotation axis 93, the slide member 97 together with the lead 82 and the spray arms 85, 86 can be displaced coaxially with the rotation axis 93 to vary the distance that the nozzles 91, 92 occupy to a surface to be cleaned ,

Die Zusatzdüse 80 ist in Form einer Rotordüse ausgebildet und umfasst ein Düsengehäuse 120 mit einem hinteren Gehäuseteil 121 und einem vorderen Gehäuseteil 122. Das Verbindungsrohr 77 mündet in das hintere Gehäuseteil 121, das in das vordere Gehäuseteil 122 eingeschraubt ist unter Zwischenlage eines Einsatzes 124, der mehrere Tangentialbohrungen aufweist, über die der Innenraum des hinteren Gehäuseteiles 121 mit dem Innenraum des vorderen Gehäuseteiles 122 in Strömungsverbindung steht. Das vordere Gehäuseteil 121 ist im Wesentlichen kegelstumpfförmig ausgestaltet und endet in einer Stirnwand 126, die mit einer Auslassöffnung 127 versehen ist und innenseitig ein pfannenförmiges Lager ausbildet für das kugelige vordere Ende eines im vorderen Gehäuseteil 122 angeordneten Düsenkörpers 129, der eine Durchgangsbohrung 130 aufweist und an der Innenwand des vorderen Gehäuseteils 122 anliegt.The auxiliary nozzle 80 is in the form of a rotor nozzle and comprises a nozzle housing 120 with a rear housing part 121 and a front housing part 122. The connecting tube 77 opens into the rear housing part 121, which is screwed into the front housing part 122 with the interposition of an insert 124, the has a plurality of tangential bores through which the interior of the rear housing part 121 is in fluid communication with the interior of the front housing part 122. The front housing part 121 is designed substantially frusto-conical and terminates in an end wall 126, which is provided with an outlet opening 127 and inside a pan-shaped bearing forms for the spherical front end of a arranged in the front housing part 122 nozzle body 129 having a through hole 130 and at the inner wall of the front housing part 122 abuts.

Wird der Zusatzdüse 80 unter Druck stehende Reinigungsflüssigkeit zugeführt, so strömt diese über die Tangentialbohrungen des Einsatzes 124 tangential in das vordere Gehäuseteil 122 ein und rotiert innerhalb des vorderen Gehäuseteils 122 um die Längsachse 132 des Düsengehäuses 120. Die rotierende Flüssigkeit versetzt den an der Innenwand des vorderen Gehäuseteiles 122 anliegenden Düsenkörper in Rotation um die Längsachse 132, wobei die Düsenkörperlängsachse 133 gegenüber der Gehäuselängsachse 132 geneigt ist. Dies hat zur Folge, dass von der Zusatzdüse 80 ein um die Gehäuselängsachse 132 rotierender, punktförmiger Flüssigkeitsstrahl abgegeben wird.If the auxiliary nozzle 80 is supplied with pressurized cleaning liquid, it flows tangentially into the front housing part 122 via the tangential bores of the insert 124 and rotates within the front housing part 122 about the longitudinal axis 132 of the nozzle housing 120. The rotating liquid displaces the cleaning fluid on the inner wall of the housing front housing parts 122 adjacent Nozzle body in rotation about the longitudinal axis 132, wherein the nozzle body longitudinal axis 133 relative to the housing longitudinal axis 132 is inclined. As a result, a point-shaped liquid jet rotating about the housing longitudinal axis 132 is emitted by the additional nozzle 80.

Die wahlweise Zuführung von Reinigungsflüssigkeit ausgehend vom Zufuhrrohr 41 über die Verbindungskanäle 47 und 48 und die Ventilbohrung 50 wahlweise zu den jeweils an einem Sprüharm 85 bzw. 86 gehaltenen Düsen 91 bzw. 92 oder zu der Zusatzdüse 82 erfolgt durch Verschieben des Ventilkolbens 61 längs der Ventilachse 62 zwischen den durch den umlaufenden Bund 64 und den Ringwulst 65 vorgegebenen Endstellungen. Zum Verschieben des Ventilkolbens 61 umfasst das Flächenreinigungsgerät 10 zwei Betätigungsglieder in Form eines ersten Fußpedals 136 und eines zweiten Fußpedals 137, die jeweils um eine Schwenkachse 138 bzw. 139 verschwenkbar an der Abdeckung 30 gelagert sind. Die Fußpedale 136, 137 wirken jeweils mit einem Kraftübertragungsglied in Form eines Schwenkarms 141 bzw. 142 zusammen. Die Schwenkarme 141, 142 sind jeweils zwischen einem Fußpedal 136 bzw. 137 und einer Stirnseite 144 bzw. 145 des Ventilkolbens 61 angeordnet. Die Schwenkachsen 147, 148 der Schwenkarme 141 bzw. 142 sind parallel zu den Schwenkachsen 138, 139 der Fußpedale 136 und 137 und in Richtung des Verteilerteils 37 versetzt zu diesen angeordnet. Die Schwenkachsen 147, 148 sind jeweils oberhalb eines Endes des Ventilkolbens 61 angeordnet. Dies wird insbesondere aus Figur 5 deutlich. Über die Schwenkarme 141, 142 kann eine Bewegung der Fußpedale 136 bzw. 137 auf den Ventilkolben 61 übertragen werden, wobei der Ventilkolben 61 praktisch nur mit koaxial zur Ventilachse 62 ausgerichteten Kraftkomponenten beaufschlagt wird. Die Gefahr, dass der Ventilkolben 61 durch Betätigung der Fußpedale 136, 137 innerhalb der Ventilbohrung 50 verkantet, wird dadurch sehr gering gehalten.The optional supply of cleaning liquid starting from the supply pipe 41 via the connecting channels 47 and 48 and the valve bore 50 selectively to each held on a spray arm 85 and 86 nozzles 91 and 92 or to the additional nozzle 82 is carried out by moving the valve piston 61 along the valve axis 62 between the predetermined by the circumferential collar 64 and the annular bead 65 end positions. To move the valve piston 61, the surface cleaning device 10 includes two actuators in the form of a first foot pedal 136 and a second foot pedal 137, which are each mounted pivotably about a pivot axis 138 and 139 on the cover 30. The foot pedals 136, 137 each cooperate with a power transmission member in the form of a pivot arm 141, 142, respectively. The pivot arms 141, 142 are each arranged between a foot pedal 136 or 137 and an end face 144 or 145 of the valve piston 61. The pivot axes 147, 148 of the pivot arms 141 and 142 are arranged parallel to the pivot axes 138, 139 of the foot pedals 136 and 137 and in the direction of the distributor part 37 offset therefrom. The pivot axes 147, 148 are each arranged above one end of the valve piston 61. This is especially true FIG. 5 clear. Via the pivot arms 141, 142, a movement of the foot pedals 136 and 137 can be transmitted to the valve piston 61, wherein the valve piston 61 is practically acted upon only with coaxial with the valve axis 62 oriented force components. The danger that the Valve piston 61 tilted by operating the Fußpedale 136, 137 within the valve bore 50 is thereby kept very low.

Wird vom Benutzer das erste Fußpedal 136 betätigt, so wird der Ventilkolben 61 in der Ventilbohrung 50 so weit verschoben, bis der Ringwulst 65 außenseitig am Verteilerteil 37 anliegt, wie dies in Figur 3 dargestellt ist. In dieser Stellung gibt der Ventilkolben 61 die Strömungsverbindung zwischen dem zweiten Verbindungskanal 48 und dem dritten Verbindungskanal 73 frei, so dass dem Zufuhrrohr 41 zugeführte Reinigungsflüssigkeit ausgehend vom Zufuhrrohr 41 über den ersten Verbindungskanal 47, den zweiten Verbindungskanal 48, den zweiten Mittelabschnitt 56 und den ersten Mittelabschnitt 53 der Ventilbohrung 50 zum dritten Verbindungskanal 73 strömen kann, von dem aus die Reinigungsflüssigkeit über die Sackbohrung 74 und die Zuleitung 82 zu den Strömungskanälen 88, 89 der Sprüharme 85, 86 und schließlich zu den Düsen 91, 92 gelangen kann. Somit kann durch Betätigen des ersten Fußpedals 36 eine zu reinigende Fläche mittels der um die Drehachse 93 umlaufenden Düsen 91, 92 mit Reinigungsflüssigkeit beaufschlagt werden.If the user actuates the first foot pedal 136, the valve piston 61 in the valve bore 50 is displaced until the annular bead 65 bears against the distributor part 37 on the outside, as shown in FIG FIG. 3 is shown. In this position, the valve piston 61 releases the flow communication between the second connection channel 48 and the third connection channel 73, so that the liquid supplied to the supply pipe 41 from the supply pipe 41 via the first connection channel 47, the second connection channel 48, the second middle section 56 and the first Central portion 53 of the valve bore 50 can flow to the third connecting channel 73, from which the cleaning fluid via the blind bore 74 and the supply line 82 to the flow channels 88, 89 of the spray arms 85, 86 and finally to the nozzles 91, 92 can pass. Thus, by actuating the first foot pedal 36, a surface to be cleaned can be acted upon by cleaning liquid by means of the nozzles 91, 92 revolving around the rotation axis 93.

Die durch Betätigung des ersten Fußpedals 136 erreichte Stellung wird vom Ventilkolben 61 aufgrund der auf ihn einwirkenden Druckkraft der Reinigungsflüssigkeit selbsttätig beibehalten. Diese selbsttätige Eigenschaft wird dadurch erzielt, dass in der voranstehend genannten Stellung die Abdichtung des Ventilkolbens 61 gegenüber der Innenwand der Ventilbohrung 50 einerseits durch den ersten O-Ring 67 und andererseits durch den dritten O-Ring 69 erzielt wird. Der erste O-Ring 67 weist einen deutlich größeren Durchmesser auf als der dritte O-Ring 69, und dies wiederum hat zur Folge, dass die unter Druck stehende Reinigungsflüssigkeit den Ventilkolben im Bereich des ersten O-Rings 67 mit einer größeren Druckkraft beaufschlagt als im Bereich des dritten O-Rings 69. Somit wird der Ventilkolben 61 nach einer Betätigung des ersten Fußpedals 136 mit einer Druckkraft beaufschlagt, die den Ventilkolben 61 zuverlässig in der eingenommenen Endstellung hält.The position reached by actuation of the first foot pedal 136 is automatically maintained by the valve piston 61 due to the pressure force of the cleaning liquid acting on it. This automatic property is achieved in that in the above-mentioned position, the sealing of the valve piston 61 relative to the inner wall of the valve bore 50 on the one hand by the first O-ring 67 and on the other hand by the third O-ring 69 is achieved. The first O-ring 67 has a significantly larger diameter than the third O-ring 69, and this in turn has the result that the pressurized cleaning fluid the valve piston in the region of the first O-ring 67 is subjected to a greater compressive force than in the region of the third O-ring 69. Thus, the valve piston 61 is acted upon actuation of the first foot pedal 136 with a compressive force that holds the valve piston 61 reliably in the assumed end position.

Wird vom Benutzer das zweite Fußpedal 137 betätigt, so wird der Ventilkolben 61 innerhalb der Ventilbohrung 50 so weit verschoben, bis der umlaufende Bund 64 an der Stufe 52 zur Anlage gelangt. In dieser Stellung liegt der zweite O-Ring 68 dichtend an der Innenwand des zweiten Mittelabschnittes 56 an, so dass der Ventilkolben 61 aufgrund der dichtenden Anlage des zweiten O-Ringes 68 die Strömungsverbindung zwischen dem zweiten Verbindungskanal 48 und dem dritten Verbindungskanal 73 sperrt. Stattdessen gibt der Ventilkolben 61 die Strömungsverbindung zwischen dem zweiten Verbindungskanal 48 und dem vierten Verbindungskanal 76 frei, denn bei Anlage des umlaufenden Bundes 64 an der Stufe 52 nimmt der dritte O-Ring 69 eine Stellung innerhalb des zweiten Endabschnittes 69 der Ventilbohrung 50 ein. Aufgrund seines relativ kleinen Durchmessers ist der dritte O-Ring 69 innerhalb des zweiten Endabschnittes 59 im Abstand zu dessen Innenwand angeordnet, wohingegen der vierte O-Ring 70 dichtend an der Innenwand anliegt. Durch Betätigen des zweiten Fußpedals 137 wird somit der Ventilkolben 61 so weit innerhalb der Ventilbohrung 50 verschoben, dass Reinigungsflüssigkeit ausgehend vom Zufuhrrohr 61 über den ersten Verbindungskanal 47, den zweiten Verbindungskanal 48, den zweiten Mittelabschnitt 56 und den zweiten Endabschnitt 59 der Ventilbohrung 50 zum vierten Verbindungskanal 76 und das sich an diesen anschließende Verbindungsrohr 77 strömen kann, so dass die Zusatzdüse 80 mit unter Druck stehender Reinigungsflüssigkeit versorgt werden kann. Die nach Betätigen des zweiten Fußpedals 137 eingenommene Stellung behält der Ventilkolben 61 bei, denn er wird von der unter Druck stehenden Reinigungsflüssigkeit mit einer Druckkraft beaufschlagt, die derart ausgerichtet ist, dass der umlaufende Bund 64 gegen die Stufe 52 gedrückt wird. Dies hat seinen Grund darin, dass die Abdichtung des Ventilkolbens 61 gegenüber der Ventilbohrung 50 in dieser Stellung einerseits durch den an der Innenwand des zweiten Mittelabschnittes 56 anliegenden zweiten O-Ring 68 und andererseits durch den an der Innenwand des zweiten Endabschnittes 59 anliegenden vierten O-Ring 70 erzielt wird. Der Durchmesser des vierten O-Rings 70 ist größer gewählt als der Durchmesser des zweiten O-Rings 68, und dies wiederum hat zur Folge, dass die resultierende Druckkraft den Ventilkolben 61 zuverlässig in seiner durch Betätigen des zweiten Fußpedals 137 eingenommenen Endstellung hält.If the user actuates the second foot pedal 137, then the valve piston 61 is displaced within the valve bore 50 until the peripheral collar 64 comes into contact with the step 52. In this position, the second O-ring 68 bears sealingly against the inner wall of the second middle section 56, so that the valve piston 61 blocks the flow connection between the second connecting channel 48 and the third connecting channel 73 due to the sealing engagement of the second O-ring 68. Instead, the valve piston 61 releases the flow connection between the second connection channel 48 and the fourth connection channel 76, because when the orbiting collar 64 bears against the step 52, the third O-ring 69 assumes a position within the second end section 69 of the valve bore 50. Due to its relatively small diameter, the third O-ring 69 is disposed within the second end portion 59 at a distance from the inner wall thereof, whereas the fourth O-ring 70 sealingly abuts against the inner wall. By actuating the second foot pedal 137, the valve piston 61 is thus displaced so far within the valve bore 50 that cleaning liquid from the supply tube 61 via the first connecting channel 47, the second connecting channel 48, the second middle section 56 and the second end portion 59 of the valve bore 50 to the fourth Connecting channel 76 and the adjoining this connecting pipe 77 can flow, so that the auxiliary nozzle 80 can be supplied with pressurized cleaning liquid. The position taken after actuation of the second foot pedal 137 retains the Valve piston 61, because it is acted upon by the pressurized cleaning fluid with a compressive force, which is oriented such that the encircling collar 64 is pressed against the step 52. The reason for this is that the sealing of the valve piston 61 with respect to the valve bore 50 in this position on the one hand by the second O-ring 68 bearing against the inner wall of the second middle section 56 and on the other hand by the fourth O-section resting against the inner wall of the second end section 59. Ring 70 is achieved. The diameter of the fourth O-ring 70 is selected larger than the diameter of the second O-ring 68, and this in turn has the result that the resulting pressure force reliably holds the valve piston 61 in its end position occupied by actuation of the second foot pedal 137.

Eine zu reinigende Fläche kann mittels des Flächenreinigungsgerätes 10 wahlweise mit Reinigungsflüssigkeit aus den um die Drehachse 93 umlaufenden Düsen 91, 92 oder mit Reinigungsflüssigkeit aus der Zusatzdüse 80 beaufschlagt werden. Mittels der umlaufenden Düsen 91, 92 kann eine verhältnismäßig große Fläche innerhalb kurzer Zeit gereinigt werden, und durch Einsatz der Zusatzdüse 80 können auch Eckbereiche der zu reinigenden Fläche zuverlässig mit Reinigungsflüssigkeit beaufschlagt werden.A surface to be cleaned can be acted upon by means of the surface cleaning device 10 optionally with cleaning liquid from the rotating around the axis of rotation 93 nozzles 91, 92 or with cleaning liquid from the additional nozzle 80. By means of the circumferential nozzles 91, 92, a relatively large area can be cleaned within a short time, and by using the additional nozzle 80 and corner areas of the surface to be cleaned can be reliably applied with cleaning liquid.

Claims (8)

  1. Surface cleaning head for cleaning a surface, comprising a hoodshaped, downwardly open housing in which at least one spray arm is mounted so as to be freely rotatable about an axis of rotation, the spray arm carrying a nozzle which can be subjected to pressurized cleaning liquid and which rotates together with the spray arm about the axis of rotation in order to act upon the surface to be cleaned with a jet of liquid, the surface cleaning head (10) comprising an additional nozzle (80) held in a rotationally fixed manner, which can be subjected to pressurized cleaning liquid, characterized in that the housing (11) comprises a substantially circular side wall (15), which surrounds the at least one spray arm (85, 86), and to the outer side of which is attached a substantially V-shaped attachment part (20), which extends over a partial area of the outer circumference of the side wall (15) and together with the area of the side wall (15) covered by the attachment part (20) defines a space (28) in which at least one outlet opening (127) of the additional nozzle (80) is arranged.
  2. Surface cleaning head in accordance with claim 1, characterized in that the side wall (15) and the attachment part (20) carry at their free edges one splash guard (18, 25) each.
  3. Surface cleaning head in accordance with claim 1 or 2, characterized in that the additional nozzle (80) is configured as a rotor nozzle with a nozzle housing (120) which is provided in an end wall (126) with a panshaped bearing for the front, spherical end of a nozzle body (129) having a through-bore (130), and which comprises an insert part (124) with at least one tangential bore for a liquid, which causes the liquid in the nozzle housing (120) to rotate about the longitudinal axis (132) of the housing so the nozzle body (129) rotates together with the rotating liquid and while doing so abuts against the inside wall of the nozzle housing (120) with an abutment surface at its periphery, the longitudinal axis (133) of the nozzle body (129) being inclined in relation to the longitudinal axis (132) of the nozzle housing (120).
  4. Surface cleaning head in accordance with claim 1, 2 or 3, characterized in that the surface cleaning head (10) comprises a switch-over device by means of which the nozzles (91, 92), each of which rotates together with a spray arm (85, 86), and/or the additional nozzle (80) can be selectively subjected to cleaning liquid.
  5. Surface cleaning head in accordance with claim 4, characterized in that the switch-over device comprises at least one actuating member (136, 137) held so as to be movable on the housing (11).
  6. Surface cleaning head in accordance with claim 4 or 5, characterized in that the switch-over device comprises two actuating members (136, 137) held so as to be movable.
  7. Surface cleaning head in accordance with claim 4, 5 or 6, characterized in that the switch-over device comprises two foot pedals (136, 137), each held so as to be movable on the housing (11).
  8. Surface cleaning head in accordance with any one of claims 4 to 7, characterized in that the switch-over device comprises a valve actuatable by the user, a flow connection being openable by the valve from a connecting element (45) of the surface cleaning head (10) selectively to the nozzles (91, 92), each of which is held on a spray arm (85, 86), and/or to the additional nozzle (80).
EP08758969.3A 2007-06-13 2008-06-03 Surface cleaning head Active EP2152440B1 (en)

Priority Applications (1)

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DE102007029245A DE102007029245A1 (en) 2007-06-13 2007-06-13 Surface cleaning head
PCT/EP2008/004405 WO2008151743A2 (en) 2007-06-13 2008-06-03 Surface cleaning head

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EP2152440B1 true EP2152440B1 (en) 2014-06-25

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DE (1) DE102007029245A1 (en)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3833490B1 (en) 2018-08-09 2022-10-05 Alfred Kärcher SE & Co. KG Surface-cleaning head

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008011506A1 (en) * 2008-02-22 2009-08-27 Alfred Kärcher Gmbh & Co. Kg Surface cleaning head
CN102470401B (en) * 2009-08-17 2014-02-12 阿尔弗雷德·凯驰两合公司 Surface-cleaning head
AU2017101723A4 (en) 2016-12-16 2018-01-18 Bissell Inc. Surface cleaning apparatus
EP4149690A1 (en) * 2020-05-11 2023-03-22 Annovi Reverberi S.p.A. Accessory for high-pressure water jet cleaning machines
DE102021113441A1 (en) 2021-05-25 2022-12-01 Alfred Kärcher SE & Co. KG HANDHELD SURFACE CLEANING HEAD

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3829019A (en) * 1972-02-02 1974-08-13 Chaska Chem Co Inc Spinner assembly
US4191589A (en) * 1977-04-25 1980-03-04 The John J. Sundheim Family Estate Method and apparatus for cleaning carpets and surfaces using cleaning fluid
DE4129026C1 (en) * 1991-08-31 1993-03-04 Alfred Kaercher Gmbh & Co, 7057 Winnenden, De
DE4404230A1 (en) * 1994-02-10 1995-08-17 Max Steinhart Gmbh Pflaster Un Method of cleaning joints between pavement flagstones or ground slabs
EP1027854A1 (en) * 1999-02-10 2000-08-16 Alto Danmark A/S Cleaning tool
DE10206013C1 (en) 2002-02-14 2003-05-22 Kaercher Gmbh & Co Alfred Floor-cleaning device comprises a height-adjustable bearing body for a spray arm which is adjusted using an adjusting element rotationally fixed to the housing by a removable connection
US7891036B2 (en) * 2005-03-18 2011-02-22 Techtronic Outdoor Products Technology Limited Multi-function power washer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3833490B1 (en) 2018-08-09 2022-10-05 Alfred Kärcher SE & Co. KG Surface-cleaning head

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WO2008151743A3 (en) 2009-04-23
WO2008151743A2 (en) 2008-12-18
DE102007029245A1 (en) 2008-12-18
DK2152440T3 (en) 2014-08-25
PL2152440T3 (en) 2014-11-28
CN101678406A (en) 2010-03-24
EP2152440A2 (en) 2010-02-17
CN101678406B (en) 2012-04-25

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