[go: up one dir, main page]

EP2435190B1 - Rotary nozzle for a high-pressure cleaning device - Google Patents

Rotary nozzle for a high-pressure cleaning device Download PDF

Info

Publication number
EP2435190B1
EP2435190B1 EP10721790.3A EP10721790A EP2435190B1 EP 2435190 B1 EP2435190 B1 EP 2435190B1 EP 10721790 A EP10721790 A EP 10721790A EP 2435190 B1 EP2435190 B1 EP 2435190B1
Authority
EP
European Patent Office
Prior art keywords
nozzle body
nozzle
housing
accordance
rotor
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
EP10721790.3A
Other languages
German (de)
French (fr)
Other versions
EP2435190A1 (en
Inventor
Johann Georg Wesch
Kai Trautwein
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 PL10721790T priority Critical patent/PL2435190T3/en
Publication of EP2435190A1 publication Critical patent/EP2435190A1/en
Application granted granted Critical
Publication of EP2435190B1 publication Critical patent/EP2435190B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/04—Spraying 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
    • B05B3/0417—Spraying 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 comprising a liquid driven rotor, e.g. a turbine
    • B05B3/0429—Spraying 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 comprising a liquid driven rotor, e.g. a turbine the rotating outlet elements being directly attached to the rotor or being an integral part thereof
    • B05B3/043—Rotor nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays

Definitions

  • the invention relates to a rotor nozzle for a high-pressure cleaning device having the features of the preamble of claim 1.
  • Rotary nozzles are known with a housing having at least one inlet tangentially into the housing for a liquid and which is provided in an end wall with a pan-shaped, centrally perforated recess, and arranged in the housing, having a through-channel and having a spherical End in the pan-shaped recess supporting nozzle body whose longitudinal axis is inclined to the longitudinal axis of the housing.
  • Liquid in the housing is set in rotation about the longitudinal axis of the housing by the liquid flowing into the housing via the at least one inlet.
  • the nozzle body revolves together with the rotating fluid and thereby engages with a contact surface on its circumference to the inner wall of the housing.
  • a compact liquid jet revolving on a conical shell can be produced, which can be directed, for example, to a surface to be cleaned for cleaning purposes.
  • the inlet of the housing can be connected to a high-pressure cleaner, so that the housing can be supplied under high pressure liquid.
  • the nozzle body which is mounted on one side only on the pan-shaped recess and can move in the housing about the longitudinal axis of the housing, moreover.
  • the nozzle body has a passageway through which the liquid can pass through the perforated recess of the housing.
  • the longitudinal axis of the nozzle body is inclined relative to the longitudinal axis of the housing.
  • the supply of the pressurized fluid over the tangentially into the housing opening inlet ensures that fluid in the housing is rotated about the longitudinal axis of the housing and thereby rotates the nozzle body to the housing longitudinal axis by within the housing a rotating liquid column formed.
  • the at least one tangential inlet forms a flow resistance for the liquid, which leads to flow losses.
  • the diameter of the at least one tangential inlet could be increased.
  • this has the consequence that the flow velocity of the liquid in the region of the at least one tangential inlet decreases, and this in turn may result in that the nozzle body is not reliably displaceable in all cases in rotation about the housing longitudinal axis.
  • start-up behavior of the nozzle body can be impaired.
  • the startup behavior is understood to mean the start of the rotation of the nozzle body.
  • the nozzle body Before the housing is supplied under pressure fluid, the nozzle body is relative to the inner wall of the housing at rest, so he does not perform any circulation movement around the housing longitudinal axis. If now the supply of pressurized liquid via the at least one tangential inlet, the static friction between the nozzle body and the inner wall of the housing must first be overcome to the To be able to set the nozzle body in rotation. Thus, a relatively large initial frictional force must first be overcome to move the nozzle body.
  • the sliding friction which is usually lower than the initial static friction, is responsible for the friction behavior of the nozzle body on the inner wall of the housing. This has the consequence that for maintaining a rotational movement of the nozzle body about the housing longitudinal axis a lower force is required than for the start of the movement.
  • a rotor nozzle for a high-pressure cleaner known with the features of the preamble of claim 1.
  • a nozzle body is used, on the outside of a bearing ring is rotatably mounted.
  • the bearing ring has a groove which receives a rolling ring.
  • the Wälzring forms a contact surface, with which the nozzle body rests against a profiled annular region of the inner wall of the housing.
  • the rolling ring and / or the annular region are elastically deformable, so that a deformation work which reduces the rotational speed of the nozzle body is achieved at the end of the rolling ring at the annular region.
  • Object of the present invention is to develop a rotor nozzle of the type mentioned in such a way that flow losses in the rotor nozzle can be reduced without thereby the operation of the rotor nozzle, in particular the startup behavior of the nozzle body, is significantly affected.
  • a force can be transmitted to the nozzle body of the rotating liquid in the housing more effective, by which the nozzle body is rotated about the housing longitudinal axis in rotation.
  • This makes it possible to increase the flow cross-section of the at least one inlet tangentially opening into the housing without adversely affecting the operation of the rotor nozzle and, in particular, the start-up behavior of the nozzle body.
  • the flow velocity of the liquid in the region of the inlet is reduced by enlarging the flow cross section of the at least one inlet, this does not impair its startup behavior due to the outer contour deviating from the circular shape in the rear end region of the nozzle body. Instead, the nozzle body is reliably rotated by the rotating liquid in the liquid flowing in the housing around its longitudinal axis, even with an enlarged flow cross-section of the at least one tangential inlet.
  • the nozzle body revolving around the housing longitudinal axis bears against the inner wall of the housing with a contact surface.
  • the contact surface is formed by an annular bead, which is rotatably connected to the nozzle body.
  • the region of the nozzle body extends with an outer contour deviating from the circular shape to directly at the rear end of the nozzle body. It has been shown that this is a particularly effective Power transmission of the rotating about the housing longitudinal axis liquid on the nozzle body allows.
  • the nozzle body In its region with an outer contour deviating from the circular shape, the nozzle body has a non-circular shape which enables an effective transmission of force from the rotating fluid to the nozzle body.
  • the nozzle body can in this area, for example, have an oval shape or a wavy outer contour.
  • the nozzle body is designed to be angular in the region with an outer contour deviating from the circular shape.
  • the nozzle body may be formed, for example, star-shaped or in the form of a polygon, in particular a square or hexagon.
  • the provision of edges in the region of the outer contour of the nozzle body allows a particularly efficient transfer of forces from the liquid rotating about the housing longitudinal axis of the nozzle body so that it follows the movement of the liquid and also rotates about the housing longitudinal axis.
  • the nozzle body in its rear end region on the outside protruding ribs.
  • the ribs give the nozzle body a deviating from the circular outer contour.
  • the nozzle body may, for example, have a plurality of circumferentially uniformly distributed ribs, which are each aligned radially.
  • a radial plane is understood to mean a plane which is aligned in the radial direction with respect to the longitudinal axis of the nozzle body.
  • a plurality of ribs are aligned parallel to each other.
  • the liquid rotating in the housing about its longitudinal axis can not only result in the nozzle body rotating around the housing longitudinal axis corresponding to the liquid.
  • the liquid rotating about the longitudinal axis of the housing can act as a rotary drive for the nozzle body about its longitudinal axis, in particular in the front region of the nozzle body, with which it is mounted in the central cup-shaped recess, so that it is rotated in its own longitudinal axis about its own rotation.
  • the self-rotation about the longitudinal axis of the nozzle body is superimposed on the orbital motion of the nozzle body on the conical surface of the housing. The self-rotation causes the liquid jet emerging on the nozzle body to rotate about its longitudinal axis.
  • the liquid jet can fan out. This can have the consequence that the cleaning effect of the liquid jet already decreases at a short distance from the nozzle body.
  • the nozzle body has a circular outer contour in its end region facing the front, spherical end. The circular outer contour reduces the transmission of forces from the liquid rotating in the housing to the nozzle body in the front region of the nozzle body. The danger that the liquid jet after leaving of the nozzle body fanned, is kept low.
  • the nozzle body thus has in its rear end region a deviating from the circular outer contour, which improves the startup behavior of the nozzle body, and in its front end region, the nozzle body has a circular outer contour, the "self-rotation of the nozzle body about its own longitudinal axis keeps low.
  • a cylindrical configuration of the nozzle body in its front end region is of particular advantage.
  • the region with a circular outer contour extends over at least half of the total length of the nozzle body.
  • the nozzle body in its rear end region on a deviating from the circular outer contour extends at most over half the total length of the nozzle body.
  • the region with an outer contour of the nozzle body that differs from the circular shape is preferably shorter than the region with a circular outer contour relative to its longitudinal axis.
  • the region extends with an outer contour deviating from the circular shape in the longitudinal direction of the nozzle body over a maximum area of 40% of the total length of the nozzle body. It has been shown that a particularly good start-up behavior can be achieved with a relatively low intrinsic rotation of the nozzle body.
  • the annular bead in the longitudinal direction of the nozzle body on both sides join areas with deviating from the circular outer contour.
  • the annular bead is arranged in such an embodiment at a distance from the rear end of the nozzle body, and both in the region between the annular bead and the rear end of the nozzle body and in the adjoining the annular bead in the direction of the front end of the nozzle body region, the nozzle body has a on the circular shape deviating outer contour.
  • the annular bead can be formed, for example, by an O-ring frictionally connected to the nozzle body, which is arranged in an annular groove surrounding the nozzle body.
  • the annular bead in particular the O-ring, is preferably made of a rubber-elastic material.
  • the above-described self-rotation of the nozzle body about its own longitudinal axis can be reduced by the nozzle body has a centrifugal force-increasing mass element in its rear end region.
  • a centrifugal force which acts on the nozzle body perpendicular to the housing longitudinal axis and presses against the inner wall of the housing.
  • the centrifugal force acting on the nozzle body can be increased by increasing the mass of the nozzle body in its rear end region. It is therefore advantageous if it has a mass element in this end region, for example a metal body.
  • a spherical mass element is used, for example a metal ball, in particular a steel ball.
  • the liquid supplied to the housing via the at least one tangential inlet can leave the housing only in that it flows through the passage channel of the nozzle body and then passes through the perforated recess on the end wall of the housing.
  • the passageway extends in the axial direction through the nozzle body. The liquid can thus enter the passage at the rear end of the nozzle body and leave it at the front end of the nozzle body. It has been found that the cleaning effect of the rotor nozzle is improved by such a passage.
  • the passageway has a relatively large length. This calms turbulence in the liquid flow. Such turbulents can lead to a fanning out of the liquid jet flowing out of the nozzle body. The relatively large length of the passageway reduces the risk of turbulence.
  • the rectifier may have parallel to the longitudinal axis of the nozzle body extending walls which pass through the passageway diametrically.
  • the rectifier has two mutually perpendicular, parallel to the passage and extending these diametrically penetrating walls.
  • a centrifugal force-increasing mass element is arranged in the rear end region of the passage channel, which can be flowed around by the liquid.
  • the mass element can be pressed into the through-channel. This facilitates the assembly of the nozzle body.
  • a rectifier is arranged in the passage, which connects in the direction of the front, spherical end of the nozzle body to the mass element.
  • the liquid can flow through the nozzle body axially, wherein it enters the passage at the rear end of the nozzle body and initially flows around the preferably spherical or cylindrical mass element. Subsequently, the liquid flows through the rectifier, which adjoins the mass element in the direction of the front end of the nozzle body.
  • the rectifier results in a calming of the liquid jet by attenuating turbulence within the liquid jet. It can be achieved a virtually turbulence-free liquid flow, so that the risk is particularly low, that the liquid jet fanning out when leaving the nozzle body.
  • a rotor nozzle 10 is shown schematically for a not shown in the drawing high-pressure cleaner, which is screwed onto a jet pipe 12 of the high-pressure cleaner.
  • the jet pipe 12 is shown only in part in the drawing, since it is known to those skilled in the art. It comprises a pipe section 13, to whose not shown in the drawing, the rotor nozzle 10 end facing in a conventional manner, the pressure hose of the high-pressure cleaner can be connected, and a connecting portion 14 with an external thread 16 for releasably connecting the jet pipe 12 with the rotor nozzle 10th
  • the rotor nozzle 10 has a housing 20 with a first housing part 21 and a second housing part 22, which define an interior 24.
  • the first housing part 21 has a frustoconical front housing portion 26 with an end wall 28 and a jacket 30, and a rear housing portion 32 which integrally connects to the front housing portion 26 and is formed as a hollow cylinder. It carries an internal thread 34, in which the connecting portion 14 of the jet pipe 12 is screwed with its external thread 16.
  • a cylindrical sealing section 36 adjoins the internal thread 34, which merges into the substantially frustoconical interior space 24 via a shoulder 40 directed radially inward relative to the longitudinal axis 38 of the housing 20.
  • the second housing part 22 is configured in the form of a closure plate 42 which limits the interior 24 in the axial direction and rests on the one hand on the shoulder 40 and on the other hand on the free end 44 of the jet pipe 12.
  • a closure plate 42 limits the interior 24 in the axial direction and rests on the one hand on the shoulder 40 and on the other hand on the free end 44 of the jet pipe 12.
  • In the direction of the end wall 28 facing away from the closing plate 42 connects to the jet pipe 12 in the circumferential direction surrounding sealing ring 46, which ensures a liquid-tight connection of the jet pipe 12 with the rotor nozzle 10.
  • the end plate 42 has a plurality, preferably four, in the circumferential direction at a uniform distance from each other arranged tangential inlets 48, via the liquid which is supplied to the rotor nozzle 10 via the jet pipe 12 from a high-pressure cleaner, can enter the interior 24. Due to the tangential orientation of the inlets 48, the liquid entering the interior space 24 has a directional component oriented tangentially relative to the longitudinal axis 38. As a result, liquid 24 is set in rotation in the interior 24 about the longitudinal axis 38 of the housing 20.
  • the end wall 28 of the front housing section 26 has a central opening 50 which widens conically in the direction away from the end plate 42.
  • the central opening 50 is surrounded by a cup-shaped bearing ring 52, which bears on the outside a sealing ring 54 and is thereby sealed from the front housing section 26.
  • the spherical front end 56 of a nozzle body 60 is supported.
  • This is designed in several parts. It comprises a nozzle 62, which forms the front end 56 of the nozzle body 60, and a nozzle carrier 64 with a passage 68 extending axially along the longitudinal axis 66 of the nozzle body 60 into which the nozzle 62 is aligned with a nozzle channel aligned with the passage 68 70 is pressed and extends in its nozzle 62 facing away from the end portion stepped.
  • a centrifugal force-increasing mass body in the form of a steel ball 72 is pressed into the passage 68.
  • the steel ball 72 is adjoined in the passage 68 in the direction of the nozzle 62 by a rectifier 74, which has two mutually perpendicular walls 75, 76 running parallel to the longitudinal axis 66 of the nozzle body 60 and penetrating the passage 68 diametrically.
  • the steel ball 72 can be flowed around in the passageway 68 of liquid, so that, after passing through the rectifier 74 and the nozzle 62, it can flow through the bearing ring 52 and the central opening 50 and thereby leave the rotor nozzle 10.
  • the nozzle carrier 64 has a front peripheral region 78 with a circular outer contour and an adjoining rear peripheral region 80 with deviating from the circular shape outer contour.
  • the outer contour of the rear peripheral region 80 which deviates from the circular shape, is formed by means of ribs 82, 83, 84, 85, 86, 87, 88, 89 projecting on the outside from the nozzle carrier 64. This is especially true FIG. 3 clear.
  • the ribs 82 and 86 are in this case diametrically opposite and are each radically aligned with respect to the longitudinal axis 66 of the nozzle body 60.
  • the ribs 84 and 88 are diametrically opposite and are radially aligned.
  • the ribs 83 and 89 are aligned with each other and parallel to the ribs 84 and 88, and the ribs 85 and 87 are also aligned with each other and aligned parallel to the ribs 84 and 88.
  • the spacing of ribs 85 and 87 with ribs 84 and 88, respectively, is identical to the distance ribs 83 and 89 have from ribs 84 and 88, respectively.
  • the nozzle carrier 64 in the rear peripheral region 80 has a circumferentially circumferential annular groove 91 in which an O-ring 92 is frictionally held and thereby rotationally fixed.
  • the O-ring protrudes in the radial direction beyond the ribs 82 to 89. It forms a contact surface, with which the nozzle body 60 can be applied to the inner wall 94 of the housing 20.
  • the ribs 82 to 89 extend in the axial direction to both sides of the O-ring 92, wherein they extend to the front end 56 facing away from the rear end 96 of the nozzle body 60.
  • the ribs 82 to 89 extend over less than half the total length of the nozzle body 60.
  • the length of the ribs 82 to 89 is less than 40% of the total length of the nozzle body 60, for example 30% to 35% of the total length.
  • the rotor nozzle 10 is supplied via the jet pipe 12 under high pressure liquid, for example water, from a high-pressure cleaning device.
  • the liquid passes via the tangential inlets 48 into the interior 24 of the housing 20 and can leave the interior via the through-channel 68, the nozzle channel 70, the bearing ring 52 and subsequently via the central opening 50.
  • the interior 24 is filled with liquid during operation of the rotor nozzle 10, which is caused to rotate about the longitudinal axis 38 of the housing 20 by the fluid flowing in via the tangential inlets 48. It thus forms in the interior 24 a rotating about the longitudinal axis 38 liquid column.
  • the rotating liquid column takes with its spherical front end 56 in the bearing ring 52 supporting the nozzle body 60, so that it also rotates about the longitudinal axis 38 of the housing 20.
  • the nozzle body 60 rests against the inner wall 94 of the housing 20 via the O-ring 92 held non-rotatably on the nozzle body 60.
  • the longitudinal axis 66 of the nozzle body 60 is thus inclined to the longitudinal axis 38 of the housing 20.
  • the rear peripheral portion 80 of the nozzle body 60 is due to the inclination of the nozzle body 60 at least equal to the steel ball 72 on only one side of the longitudinal axis 38 of the housing 20, whereas the front peripheral portion 78 on both sides and on the opposite side the longitudinal axis 38 extends. This will be out of the FIGS.
  • FIG. 3 shows a sectional view perpendicular to the longitudinal axis 38 of the housing 20 in height of the steel ball 72
  • FIG. 4 shows a sectional view perpendicular to the longitudinal axis 38 of the housing 20 approximately in the center of the front peripheral portion 78th
  • the velocity vectors of the liquid flowing around the rear peripheral region 80 at the level of the steel ball 72 are in FIG. 3 illustrated by the arrows 101 and 102.
  • the arrow 101 shows the velocity vector of the liquid flowing around the rear peripheral portion 80 on the radially outer side 98
  • the arrow 102 shows the velocity vector of the liquid flowing around the rear peripheral portion 80 at the radial inner side 99.
  • the liquid has a higher speed than at the radial inner side, but the direction of the speeds coincides. This has the consequence that in the rear peripheral region 80, which is characterized by a deviating from the circular outer contour, from the about the longitudinal axis 38 of the housing 20 rotating liquid column, a considerable force on the nozzle body 60 can be transferred, so that this the orbital movement of the Liquid column follows about the longitudinal axis 38.
  • FIG. 4 the flow conditions of the liquid flowing around the nozzle body 60 are illustrated as they are present in the front peripheral region 78.
  • the front peripheral region 78 has a relatively short distance from the bearing ring 52. Despite its inclination to the longitudinal axis 38, therefore, the nozzle body 60 on both sides of the longitudinal axis 38 on peripheral regions, which are respectively flowed around by the liquid rotating about the longitudinal axis 38.
  • the arrow 104 symbolizes the velocity vector of the liquid, which flows around the front peripheral region 78 on a first side
  • the arrow 105 symbolizes the velocity vector of the liquid that flows around the front peripheral portion 78 on the first side opposite the second side. It can be seen that the velocity vectors 104 and 105 are opposite to each other.
  • the liquid flowing around the nozzle body 60 in the front peripheral region 78 therefore has the tendency to drive the nozzle body 60 about its own longitudinal axis 66 for its own rotation.
  • the front peripheral portion 78 in contrast to the rear peripheral portion 80 has a circular outer contour, only a relatively small force is transmitted to the nozzle body 60 in the front peripheral portion 78 of the rotating about the longitudinal axis 38 of the housing 20 liquid. This therefore has a relatively low intrinsic rotation.
  • the nozzle body 60 reliably to a circulation movement the longitudinal axis 38 driven without these forces have a self-rotation of the nozzle body 60 result.
  • the circulation movement of the nozzle body 60 about the longitudinal axis 38 has the consequence that emerges from the housing 20 of the rotor nozzle 10, a compact cleaning jet, which rotates on a conical surface.
  • This compact cleaning jet is particularly suitable for cleaning purposes.

Landscapes

  • Nozzles (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Description

Die Erfindung betrifft eine Rotordüse für ein Hochdruckreinigungsgerät mit den Merkmalen des Oberbegriffes von Patentanspruch 1.The invention relates to a rotor nozzle for a high-pressure cleaning device having the features of the preamble of claim 1.

Aus der DE 41 29 026 C1 sind Rotordüsen bekannt mit einem Gehäuse, das mindestens einen tangential in das Gehäuse einmündenden Einlass für eine Flüssigkeit aufweist und das in einer Stirnwand mit einer pfannenförmigen, zentral durchbrochenen Vertiefung versehen ist, und mit einem im Gehäuse angeordneten, einen Durchgangskanal aufweisenden und sich mit einem kugeligen Ende in der pfannenförmigen Vertiefung abstützenden Düsenkörper, dessen Längsachse zur Längsachse des Gehäuses geneigt ist. Flüssigkeit im Gehäuse ist durch die über den mindestens einen Einlass in das Gehäuse einströmende Flüssigkeit um die Längsachse des Gehäuses in Rotation versetzbar. Der Düsenkörper läuft zusammen mit der rotierenden Flüssigkeit um und legt sich dabei mit einer Anlagefläche an seinem Umfang an die Innenwand des Gehäuses an. Mit derartigen Rotordüsen kann ein auf einem Kegelmantel umlaufender kompakter Flüssigkeitsstrahl erzeugt werden, der beispielsweise zu Reinigungszwecken auf eine zu reinigende Fläche gerichtet werden kann. Hierzu kann der Einlass des Gehäuses mit einem Hochdruckreinigungsgerät verbunden werden, so dass dem Gehäuse unter hohem Druck stehende Flüssigkeit zugeführt werden kann. In dem Gehäuse befindet sich der Düsenkörper, der nur einseitig an der pfannenförmigen Vertiefung gelagert ist und sich im Übrigen im Gehäuse um die Längsachse des Gehäuses bewegen kann. Der Düsenkörper weist einen Durchgangskanal auf, durch den die Flüssigkeit die durchbrochene Vertiefung des Gehäuses passieren kann. Die Längsachse des Düsenkörpers ist gegenüber der Längsachse des Gehäuses geneigt. Durch die tangential in das Gehäuse eintretende Flüssigkeit wird der Düsenkörper in die pfannenförmigeFrom the DE 41 29 026 C1 Rotary nozzles are known with a housing having at least one inlet tangentially into the housing for a liquid and which is provided in an end wall with a pan-shaped, centrally perforated recess, and arranged in the housing, having a through-channel and having a spherical End in the pan-shaped recess supporting nozzle body whose longitudinal axis is inclined to the longitudinal axis of the housing. Liquid in the housing is set in rotation about the longitudinal axis of the housing by the liquid flowing into the housing via the at least one inlet. The nozzle body revolves together with the rotating fluid and thereby engages with a contact surface on its circumference to the inner wall of the housing. With such rotor nozzles, a compact liquid jet revolving on a conical shell can be produced, which can be directed, for example, to a surface to be cleaned for cleaning purposes. For this purpose, the inlet of the housing can be connected to a high-pressure cleaner, so that the housing can be supplied under high pressure liquid. In the housing is the nozzle body, which is mounted on one side only on the pan-shaped recess and can move in the housing about the longitudinal axis of the housing, moreover. The nozzle body has a passageway through which the liquid can pass through the perforated recess of the housing. The longitudinal axis of the nozzle body is inclined relative to the longitudinal axis of the housing. By tangentially entering the housing liquid, the nozzle body is in the pan-shaped

Vertiefung gedrückt, die ein Lager für den Düsenkörper ausbildet, und zugleich wird der Düsenkörper in Rotation um die Gehäuselängsachse versetzt. Dies hat zur Folge, dass der austretende Flüssigkeitsstrahl ebenfalls die gewünschte kreisförmige Bewegung beschreibt, so dass bei einem mit Punktstrahldüsen vergleichbaren Druck eine verhältnismäßig große Fläche mit Flüssigkeit beaufschlagt werden kann.Pressed recess, which forms a bearing for the nozzle body, and at the same time the nozzle body is set in rotation about the housing longitudinal axis. This has the consequence that the exiting liquid jet also describes the desired circular movement, so that when a comparable pressure with dot jet nozzles a relatively large area can be acted upon with liquid.

Die Zuführung der unter Druck stehenden Flüssigkeit über den tangential in das Gehäuse einmündenden Einlass stellt sicher, dass im Gehäuse befindliche Flüssigkeit um die Längsachse des Gehäuses in Rotation versetzt wird und dadurch auch der Düsenkörper um die Gehäuselängsachse rotiert, indem sich innerhalb des Gehäuses eine rotierende Flüssigkeitssäule ausbildet. Der mindestens eine tangentiale Einlass bildet allerdings für die Flüssigkeit einen Strömungswiderstand aus, der zu Strömungsverlusten führt. Um den Strömungswiderstand zu verringern, könnte der Durchmesseer des mindestens einen tangentialen Einlasses vergrößert werden. Dies hat dann aber zur Folge, dass sich die Strömungsgeschwindigkeit der Flüssigkeit im Bereich des mindestens einen tangentialen Einlasses verringert, und dies wiederum kann zur Folge haben, dass der Düsenkörper nicht in allen Fällen zuverlässig in Rotation um die Gehäuselängsachse versetzbar ist. Insbesondere das so genannte "Anlaufverhalten" des Düsenkörpers kann beeinträchtigt werden. Unter dem Anlaufverhalten wird das Ingangsetzen der Rotation des Düsenkörpers verstanden. Bevor dem Gehäuse unter Druck stehende Flüssigkeit zugeführt wird, befindet sich der Düsenkörper relativ zur Innenwand des Gehäuses in Ruhe, er führt also noch keine Umlaufbewegung um die Gehäuselängsachse aus. Erfolg nun die Zuführung von unter Druck stehender Flüssigkeit über den mindestens einen tangentialen Einlass, so muss zunächst die Haftreibung zwischen dem Düsenkörper und der Innenwand des Gehäuses überwunden werden, um den Düsenkörper in Rotation versetzen zu können. Es muss somit zunächst eine verhältnismäßig große anfängliche Reibungskraft überwunden werden, um den Düsenkörper zu bewegen. Führt der Düsenkörper dann eine Rotationsbewegung aus, so ist für das Reibungsverhalten des Düsenkörpers an der Innenwand des Gehäuses die Gleitreibung verantwortlich, die üblicherweise geringer ist als die anfängliche Haftreibung. Dies hat zur Folge, dass für die Aufrechterhaltung einer Rotationsbewegung des Düsenkörpers um die Gehäuselängsachse eine geringere Kraft erforderlich ist als für das Ingangsetzen der Bewegung.The supply of the pressurized fluid over the tangentially into the housing opening inlet ensures that fluid in the housing is rotated about the longitudinal axis of the housing and thereby rotates the nozzle body to the housing longitudinal axis by within the housing a rotating liquid column formed. However, the at least one tangential inlet forms a flow resistance for the liquid, which leads to flow losses. To reduce the flow resistance, the diameter of the at least one tangential inlet could be increased. However, this then has the consequence that the flow velocity of the liquid in the region of the at least one tangential inlet decreases, and this in turn may result in that the nozzle body is not reliably displaceable in all cases in rotation about the housing longitudinal axis. In particular, the so-called "start-up behavior" of the nozzle body can be impaired. The startup behavior is understood to mean the start of the rotation of the nozzle body. Before the housing is supplied under pressure fluid, the nozzle body is relative to the inner wall of the housing at rest, so he does not perform any circulation movement around the housing longitudinal axis. If now the supply of pressurized liquid via the at least one tangential inlet, the static friction between the nozzle body and the inner wall of the housing must first be overcome to the To be able to set the nozzle body in rotation. Thus, a relatively large initial frictional force must first be overcome to move the nozzle body. If the nozzle body then carries out a rotational movement, then the sliding friction, which is usually lower than the initial static friction, is responsible for the friction behavior of the nozzle body on the inner wall of the housing. This has the consequence that for maintaining a rotational movement of the nozzle body about the housing longitudinal axis a lower force is required than for the start of the movement.

Falls nun der Strömungsquerschnitt des mindestens einen tangentialen Einlassses vergrößert wird, um Strömungsverluste im Bereich des Einlasses zu verringern, so wird dadurch die Strömungsgeschwindigkeit der Flüssigkeit im Bereich des Einlasses reduziert, und dies wiederum kann zur Folge haben, dass die von der Flüssigkeit auf den Düsenkörper ausgeübte Kraft nicht ausreicht, um den Düsenkörper in Rotation um die Gehäuselängsachse zu versetzen.If the flow cross-section of the at least one tangential inlet is then increased in order to reduce flow losses in the region of the inlet, this reduces the flow velocity of the liquid in the region of the inlet, which in turn can lead to liquid from the nozzle body applied force is insufficient to enable the nozzle body in rotation about the housing longitudinal axis.

Aus der US 5,598,975 A ist eine Rotordüse für ein Hochdruckreinigungsgerät bekannt mit den Merkmalen des Oberbegriffes von Patentanspruch 1. Bei dieser Rotordüse kommt ein Düsenkörper zum Einsatz, an dessen Außenseite ein Lagerring drehbar angeordnet ist. Der Lagerring weist eine Nut auf, die einen Wälzring aufnimmt. Der Wälzring bildet eine Anlagefläche, mit der der Düsenkörper an einem profilierten Ringbereich der Innenwand des Gehäuses anliegt. Der Wälzring und/oder der Ringbereich sind elastisch verformbar, so dass beim Ablauf des Wälzrings an dem Ringbereich eine die Drehzahl des Düsenkörpers vermindernde Verformungsarbeit geleistet wird.From the US 5,598,975 A is a rotor nozzle for a high-pressure cleaner known with the features of the preamble of claim 1. In this rotor nozzle, a nozzle body is used, on the outside of a bearing ring is rotatably mounted. The bearing ring has a groove which receives a rolling ring. The Wälzring forms a contact surface, with which the nozzle body rests against a profiled annular region of the inner wall of the housing. The rolling ring and / or the annular region are elastically deformable, so that a deformation work which reduces the rotational speed of the nozzle body is achieved at the end of the rolling ring at the annular region.

Aufgabe der vorliegenden Erfindung ist es, eine Rotordüse der eingangs genannten Art derart weiterzubilden, dass Strömungsverluste im Bereich der Rotordüse verringert werden können, ohne dass dadurch der Betrieb der Rotordüse, insbesondere das Anlaufverhalten des Düsenkörpers, merklich beeinträchtigt wird.Object of the present invention is to develop a rotor nozzle of the type mentioned in such a way that flow losses in the rotor nozzle can be reduced without thereby the operation of the rotor nozzle, in particular the startup behavior of the nozzle body, is significantly affected.

Diese Aufgabe wird durch eine Rotordüse mit den Merkmalen von Patentanspruch 1 gelöst.This object is achieved by a rotor nozzle having the features of patent claim 1.

Durch die von der Kreisform abweichende Außenkontur im hinteren Endbereich des Düsenkörpers kann auf den Düsenkörper von der im Gehäuse rotierenden Flüssigkeit wirksamer eine Kraft übertragen werden, durch die der Düsenkörper um die Gehäuselängsachse in Rotation versetzt wird. Dies wiederum macht es möglich, den Strömungsquerschnitt des mindestens einen tangential in das Gehäuse einmündenden Einlasses zu vergrößern, ohne dass dadurch der Betrieb der Rotordüse und insbesondere das Anlaufverhalten des Düsenkörpers nachteilig beeinflusst wird. Durch die Vergrößerung des Strömungsquerschnitts des mindestens einen Einlasses wird zwar die Strömungsgeschwindigkeit der Flüssigkeit im Bereich des Einlasses reduziert, dies hat jedoch aufgrund der von der Kreisform abweichenden Außenkontur im hinteren Endbereich des Düsenkörpers keine Beeinträchtigung von dessen Anlaufverhalten zur Folge. Der Düsenkörper wird vielmehr von der im Gehäuse um dessen Längsachse strömenden Flüssigkeit auch bei vergrößertem Strömungsquerschnitt des mindestens einen tangentialen Einlasses zuverlässig von der rotierenden Flüssigkeit in Drehung versetzt.Due to the deviating from the circular outer contour in the rear end of the nozzle body, a force can be transmitted to the nozzle body of the rotating liquid in the housing more effective, by which the nozzle body is rotated about the housing longitudinal axis in rotation. This, in turn, makes it possible to increase the flow cross-section of the at least one inlet tangentially opening into the housing without adversely affecting the operation of the rotor nozzle and, in particular, the start-up behavior of the nozzle body. Although the flow velocity of the liquid in the region of the inlet is reduced by enlarging the flow cross section of the at least one inlet, this does not impair its startup behavior due to the outer contour deviating from the circular shape in the rear end region of the nozzle body. Instead, the nozzle body is reliably rotated by the rotating liquid in the liquid flowing in the housing around its longitudinal axis, even with an enlarged flow cross-section of the at least one tangential inlet.

Durch die von der Kreisform abweichende Außenkontur im hinteren Endbereich des Düsenkörpers können somit Strömungsverluste der Flüssigkeit im Bereich der Rotordüse verringert werden und dennoch ist sichergestellt, dass von der Rotordüse zuverlässig ein unter hohem Druck stehender, auf einem Kegelmantel umlaufender Reinigungsstrahl erzeugt werden kann.By deviating from the circular outer contour in the rear end of the nozzle body thus flow losses of the liquid can be reduced in the rotor nozzle and yet it is ensured that of the Rotor nozzle reliable under high pressure, can be generated on a cone surface rotating cleaning jet.

Wie erwähnt, liegt der um die Gehäuselängsachse umlaufende Düsenkörper mit einer Anlagefläche an der Innenwand des Gehäuses an. Erfindungsgemäß wird die Anlagefläche von einem Ringwulst ausgebildet, der mit dem Düsenkörper drehfest verbunden ist.As mentioned, the nozzle body revolving around the housing longitudinal axis bears against the inner wall of the housing with a contact surface. According to the invention, the contact surface is formed by an annular bead, which is rotatably connected to the nozzle body.

Von Vorteil ist es, wenn sich der Bereich des Düsenkörpers mit von der Kreisform abweichender Außenkontur bis unmittelbar an das hintere Ende des Düsenkörpers erstreckt. Es hat sich gezeigt, dass dies eine besonders wirksame Kraftübertragung von der um die Gehäuselängsachse rotierenden Flüssigkeit auf den Düsenkörper ermöglicht.It is advantageous if the region of the nozzle body extends with an outer contour deviating from the circular shape to directly at the rear end of the nozzle body. It has been shown that this is a particularly effective Power transmission of the rotating about the housing longitudinal axis liquid on the nozzle body allows.

In seinem Bereich mit von der Kreisform abweichender Außenkontur weist der Düsenkörper eine unrunde Gestalt auf, die eine wirksame Kraftübertragung von der rotierenden Flüssigkeit auf den Düsenkörper ermöglicht. Der Düsenkörper kann in diesem Bereich beispielsweise eine ovale Gestalt aufweisen oder auch eine wellenförmige Außenkontur.In its region with an outer contour deviating from the circular shape, the nozzle body has a non-circular shape which enables an effective transmission of force from the rotating fluid to the nozzle body. The nozzle body can in this area, for example, have an oval shape or a wavy outer contour.

Als besonders wirkungsvoll hat sich eine Ausgestaltung erwiesen, bei der der Düsenkörper im Bereich mit von der Kreisform abweichender Außenkontur eckig ausgestaltet ist. In diesem Bereich kann der Düsenkörper beispielsweise sternförmig ausgebildet sein oder auch in Form eines Mehrkantes, insbesondere eines Vierkantes oder Sechskantes. Die Bereitstellung von Kanten im Bereich der Außenkontur des Düsenkörpers ermöglicht eine besonders effiziente Übertragung von Kräften von der um die Gehäuselängsachse rotierenden Flüssigkeit auf den Düsenkörper, so dass dieser der Bewegung der Flüssigkeit folgt und ebenfalls um die Gehäuselängsachse umläuft.An embodiment has proved to be particularly effective in which the nozzle body is designed to be angular in the region with an outer contour deviating from the circular shape. In this area, the nozzle body may be formed, for example, star-shaped or in the form of a polygon, in particular a square or hexagon. The provision of edges in the region of the outer contour of the nozzle body allows a particularly efficient transfer of forces from the liquid rotating about the housing longitudinal axis of the nozzle body so that it follows the movement of the liquid and also rotates about the housing longitudinal axis.

Bei einer vorteilhaften Ausgestaltung der Erfindung weist der Düsenkörper in seinem hinteren Endbereich nach außen abstehende Rippen auf. Die Rippen verleihen dem Düsenkörper eine von der Kreisform abweichende Außenkontur.In an advantageous embodiment of the invention, the nozzle body in its rear end region on the outside protruding ribs. The ribs give the nozzle body a deviating from the circular outer contour.

Besonders vorteilhaft ist es, wenn zumindest einige Rippen in einer Radialebene bezogen auf die Längsachse des Düsenkörpers verlaufen. Der Düsenkörper kann beispielsweise mehrere in Umfangsrichtung gleichmäßig verteilte Rippen aufweisen, die jeweils radial ausgerichtet sind.It is particularly advantageous if at least some ribs extend in a radial plane relative to the longitudinal axis of the nozzle body. The nozzle body may, for example, have a plurality of circumferentially uniformly distributed ribs, which are each aligned radially.

Alternativ oder ergänzend kann vorgesehen sein, dass zumindest einige Rippen senkrecht zu einer Radialebene bezogen auf die Längsachse des Düsenkörpers verlaufen. Unter einer Radialebene wird hierbei eine Ebene verstanden, die bezogen auf die Längsachse des Düsenkörpers in Radialrichtung ausgerichtet ist.Alternatively or additionally, it can be provided that at least some ribs extend perpendicular to a radial plane relative to the longitudinal axis of the nozzle body. In this case, a radial plane is understood to mean a plane which is aligned in the radial direction with respect to the longitudinal axis of the nozzle body.

Bevorzugt sind mehrere Rippen parallel zueinander ausgerichtet.Preferably, a plurality of ribs are aligned parallel to each other.

Die im Gehäuse um dessen Längsachse rotierende Flüssigkeit kann nicht nur zur Folge haben, dass der Düsenkörper entsprechend der Flüssigkeit um die Gehäuselängsachse rotiert. Die um die Längsachse des Gehäuses rotierende Flüssigkeit kann insbesondere im vorderen Bereich des Düsenkörpers, mit dem dieser in der zentralen, pfannenförmigen Vertiefung gelagert ist, als Drehantrieb für den Düsenkörper um dessen Längsachse wirken, so dass dieser in Eigenrotation um seine eigene Längsachse versetzt wird. Die Eigenrotation um die Längsachse des Düsenkörpers überlagert sich der Umlaufbewegung des Düsenkörpers auf dem Kegelmantel des Gehäuses. Die Eigenrotation führt dazu, dass auch der auf dem Düsenkörper austretende Flüssigkeitsstrahl um seine Längsachse in Rotation gelangt. Sobald die entsprechend in Umfangsrichtung beschleunigten Flüssigkeitsteilchen den Düsenkörper verlassen, kann daher der Flüssigkeitsstrahl auffächern. Dies kann zur Folge haben, dass die Reinigungswirkung des Flüssigkeitsstrahls bereits in kurzem Abstand vom Düsenkörper nachlässt. Um die Eigenrotation des Düsenkörpers gering zu halten, ist es von Vorteil, wenn der Düsenkörper in seinem dem vorderen, kugeligen Ende zugewandten Endbereich eine kreisförmige Außenkontur aufweist. Durch die kreisförmige Außenkontur wird die Übertragung von Kräften von der im Gehäuse rotierenden Flüssigkeit auf den Düsenkörper im vorderen Bereich des Düsenkörpers reduziert. Die Gefahr, dass der Flüssigkeitsstrahl nach Verlassen des Düsenkörpers auffächert, wird dadurch gering gehalten. Bei einer derartigen Ausgestaltung weist der Düsenkörper somit in seinem hinteren Endbereich eine von der Kreisform abweichende Außenkontur auf, die das Anlaufverhalten des Düsenkörpers verbessert, und in seinem vorderen Endbereich weist der Düsenkörper eine kreisförmige Außenkontur auf, die die "Eigenrotation des Düsenkörpers um seine eigene Längsachse gering hält.The liquid rotating in the housing about its longitudinal axis can not only result in the nozzle body rotating around the housing longitudinal axis corresponding to the liquid. The liquid rotating about the longitudinal axis of the housing can act as a rotary drive for the nozzle body about its longitudinal axis, in particular in the front region of the nozzle body, with which it is mounted in the central cup-shaped recess, so that it is rotated in its own longitudinal axis about its own rotation. The self-rotation about the longitudinal axis of the nozzle body is superimposed on the orbital motion of the nozzle body on the conical surface of the housing. The self-rotation causes the liquid jet emerging on the nozzle body to rotate about its longitudinal axis. As soon as the liquid particles, which have been accelerated in the circumferential direction, leave the nozzle body, the liquid jet can fan out. This can have the consequence that the cleaning effect of the liquid jet already decreases at a short distance from the nozzle body. In order to keep the self-rotation of the nozzle body low, it is advantageous if the nozzle body has a circular outer contour in its end region facing the front, spherical end. The circular outer contour reduces the transmission of forces from the liquid rotating in the housing to the nozzle body in the front region of the nozzle body. The danger that the liquid jet after leaving of the nozzle body fanned, is kept low. In such an embodiment, the nozzle body thus has in its rear end region a deviating from the circular outer contour, which improves the startup behavior of the nozzle body, and in its front end region, the nozzle body has a circular outer contour, the "self-rotation of the nozzle body about its own longitudinal axis keeps low.

Eine zylindrische Ausgestaltung des Düsenkörpers in seinem vorderen Endbereich ist von besonderem Vorteil.A cylindrical configuration of the nozzle body in its front end region is of particular advantage.

Bevorzugt erstreckt sich der Bereich mit kreisförmiger Außenkontur über mindestens die Hälfte der Gesamtlänge des Düsenkörpers. Bei einer derartigen Ausgestaltung weist der Düsenkörper in seinem hinteren Endbereich eine von der Kreisform abweichende Außenkontur auf. Dieser Bereich erstreckt sich aber allenfalls über die Hälfte der Gesamtlänge des Düsenkörpers.Preferably, the region with a circular outer contour extends over at least half of the total length of the nozzle body. In such an embodiment, the nozzle body in its rear end region on a deviating from the circular outer contour. However, this area extends at most over half the total length of the nozzle body.

Vorzugsweise ist der Bereich mit von der Kreisform abweichender Außenkontur des Düsenkörpers bezogen auf dessen Längsachse kürzer als der Bereich mit kreisförmiger Außenkontur.The region with an outer contour of the nozzle body that differs from the circular shape is preferably shorter than the region with a circular outer contour relative to its longitudinal axis.

Insbesondere kann vorgesehen sein, dass sich der Bereich mit von der Kreisform abweichender Außenkontur in Längsrichtung des Düsenkörpers über einen Bereich von maximal 40 % der Gesamtlänge des Düsenkörpers erstreckt. Es hat sich gezeigt, dass dadurch ein besonders gutes Anlaufverhalten bei verhältnismäßig geringer Eigenrotation des Düsenkörper erzielbar ist.In particular, it can be provided that the region extends with an outer contour deviating from the circular shape in the longitudinal direction of the nozzle body over a maximum area of 40% of the total length of the nozzle body. It has been shown that a particularly good start-up behavior can be achieved with a relatively low intrinsic rotation of the nozzle body.

Es ist günstig, wenn sich an den Ringwulst in Längsrichtung des Düsenkörpers zu beiden Seiten Bereiche mit von der Kreisform abweichender Außenkontur anschließen. Der Ringwulst ist bei einer derartigen Ausgestaltung im Abstand zum hinteren Ende des Düsenkörpers angeordnet, und sowohl im Bereich zwischen dem Ringwulst und dem hinteren Ende des Düsenkörpers als auch in dem an den Ringwulst in Richtung auf das vordere Ende des Düsenkörpers anschließenden Bereich weist der Düsenkörper eine von der Kreisform abweichende Außenkontur auf. Dadurch kann auf den Düsenkörper zu beiden Seiten des Ringwulstes, d.h. zu beiden Seiten der Anlagefläche, eine verhältnismäßig große Kraft von der um die Gehäuselängsachse rotierenden Flüssigkeit übertragen werden. Es hat sich gezeigt, dass dadurch das Anlaufverhalten des Düsenkörpers verbessert werden kann.It is advantageous if the annular bead in the longitudinal direction of the nozzle body on both sides join areas with deviating from the circular outer contour. The annular bead is arranged in such an embodiment at a distance from the rear end of the nozzle body, and both in the region between the annular bead and the rear end of the nozzle body and in the adjoining the annular bead in the direction of the front end of the nozzle body region, the nozzle body has a on the circular shape deviating outer contour. Thereby, it is possible to apply to the nozzle body on both sides of the annular bead, i. On both sides of the contact surface, a relatively large force from the rotating around the housing longitudinal axis liquid to be transmitted. It has been shown that thereby the startup behavior of the nozzle body can be improved.

Der Ringwulst kann beispielsweise von einem mit dem Düsenkörper reibschlüssig verbundenen O-Ring gebildet werden, der in einer den Düsenkörper umgebenden Ringnut angeordnet ist.The annular bead can be formed, for example, by an O-ring frictionally connected to the nozzle body, which is arranged in an annular groove surrounding the nozzle body.

Der Ringwulst, insbesondere der O-Ring, ist vorzugsweise aus einem gummielastischen Material gefertigt.The annular bead, in particular the O-ring, is preferably made of a rubber-elastic material.

Die voranstehend erläuterte Eigenrotation des Düsenkörpers um dessen eigene Längsachse kann verringert werden, indem der Düsenkörper in seinem hinteren Endbereich ein fliehkraftverstärkendes Masseelement aufweist. Aufgrund seiner Umlaufbewegung um die Längsachse des Gehäuses unterliegt der Düsenkörper einer Fliehkraft, die den Düsenkörper senkrecht zur Gehäuselängsachse beaufschlagt und gegen die Innenwand des Gehäuses drückt. Dadurch wird die Eigenrotation des Düsenkörpers um seine eigene Längsachse behindert. Die auf den Düsenkörper einwirkende Fliehkraft kann verstärkt werden, indem die Masse des Düsenkörpers in seinem hinteren Endbereich erhöht wird. Es ist deshalb günstig, wenn er in diesem Endbereich ein Masseelement aufweist, beispielsweise einen Metallkörper.The above-described self-rotation of the nozzle body about its own longitudinal axis can be reduced by the nozzle body has a centrifugal force-increasing mass element in its rear end region. by virtue of its circulation movement about the longitudinal axis of the housing of the nozzle body is subject to a centrifugal force which acts on the nozzle body perpendicular to the housing longitudinal axis and presses against the inner wall of the housing. As a result, the self-rotation of the nozzle body is obstructed about its own longitudinal axis. The centrifugal force acting on the nozzle body can be increased by increasing the mass of the nozzle body in its rear end region. It is therefore advantageous if it has a mass element in this end region, for example a metal body.

Bevorzugt kommt ein kugelförmiges Masseelement zum Einsatz, beispielsweise eine Metallkugel, insbesondere eine Stahlkugel.Preferably, a spherical mass element is used, for example a metal ball, in particular a steel ball.

Die dem Gehäuse über den mindestens einen tangentialen Einlass zugeführte Flüssigkeit kann das Gehäuse nur dadurch verlassen, dass sie durch den Durchgangskanal des Düsenkörpers hindurchströmt und anschließend die durchbrochene Vertiefung an der Stirnwand des Gehäuses passiert. Günstigerweise erstreckt sich der Durchgangskanal in axialer Richtung durch den Düsenkörper hindurch. Die Flüssigkeit kann somit am hinteren Ende des Düsenkörpers in den Durchgangskanal eintreten und diesen am vorderen Ende des Düsenkörpers verlassen. Es hat sich gezeigt, dass durch einen derartigen Durchgangskanal die Reinigungswirkung der Rotordüse verbessert wird. Der Durchgangskanal weist eine verhältnismäßig große Länge auf. Dadurch werden Turbulenzen der Flüssigkeitsströmung beruhigt. Derartige Turbulenten können zu einer Auffächerung des aus dem Düsenkörper herausströmenden Flüssigkeitsstrahls führen. Durch die verhältnismäßig große Länge des Durchgangskanals wird die Gefahr von Turbulenzen verringert.The liquid supplied to the housing via the at least one tangential inlet can leave the housing only in that it flows through the passage channel of the nozzle body and then passes through the perforated recess on the end wall of the housing. Conveniently, the passageway extends in the axial direction through the nozzle body. The liquid can thus enter the passage at the rear end of the nozzle body and leave it at the front end of the nozzle body. It has been found that the cleaning effect of the rotor nozzle is improved by such a passage. The passageway has a relatively large length. This calms turbulence in the liquid flow. Such turbulents can lead to a fanning out of the liquid jet flowing out of the nozzle body. The relatively large length of the passageway reduces the risk of turbulence.

Besonders günstig ist es, wenn im Durchgangskanal ein Gleichrichter angeordnet ist, denn dadurch können Turbulenzen im Flüssigkeitsstrahl besonders wirkungsvoll beruhigt werden. Der Gleichrichter kann parallel zur Längsachse des Düsenkörpers verlaufende Wände aufweisen, die den Durchgangskanal diametral durchgreifen. Insbesondere kann vorgesehen sein, dass der Gleichrichter zwei senkrecht aufeinander stehende, parallel zum Durchgangskanal verlaufende und diesen diametral durchsetzende Wände aufweist.It is particularly advantageous if a rectifier is arranged in the passage, because turbulence in the liquid jet can be calmed particularly effectively. The rectifier may have parallel to the longitudinal axis of the nozzle body extending walls which pass through the passageway diametrically. In particular, it can be provided that the rectifier has two mutually perpendicular, parallel to the passage and extending these diametrically penetrating walls.

Günstigerweise ist im hinteren Endbereich des Durchgangskanals ein fliehkraftverstärkendes Masseelement angeordnet, das von der Flüssigkeit umströmbar ist. Das Masseelement kann in den Durchgangskanal eingepresst sein. Dies erleichtert die Montage des Düsenkörpers.Conveniently, a centrifugal force-increasing mass element is arranged in the rear end region of the passage channel, which can be flowed around by the liquid. The mass element can be pressed into the through-channel. This facilitates the assembly of the nozzle body.

Von besonderem Vorteil ist es, wenn im Durchgangskanal ein Gleichrichter angeordnet ist, der sich in Richtung auf das vordere, kugelige Ende des Düsenkörpers an das Masseelement anschließt. Bei einer derartigen Ausgestaltung kann die Flüssigkeit den Düsenkörper axial durchströmen, wobei sie am hinteren Ende des Düsenkörpers in den Durchgangskanal eintritt und zunächst das bevorzugt kugelförmige oder zylinderförmige Masseelement umströmt. Anschließend durchströmt die Flüssigkeit den sich in Richtung auf das vordere Ende des Düsenkörpers an das Masseelement anschließenden Gleichrichter. Der Gleichrichter hat eine Beruhigung des Flüssigkeitsstrahls zur Folge, indem Turbulenzen innerhalb des Flüssigkeitsstrahls abgeschwächt werden. Es kann eine praktisch turbulenzfreie Flüssigkeitsströmung erzielt werden, so dass die Gefahr besonders gering ist, dass der Flüssigkeitsstrahl bei Verlassen des Düsenkörpers auffächert.It is particularly advantageous if a rectifier is arranged in the passage, which connects in the direction of the front, spherical end of the nozzle body to the mass element. In such an embodiment, the liquid can flow through the nozzle body axially, wherein it enters the passage at the rear end of the nozzle body and initially flows around the preferably spherical or cylindrical mass element. Subsequently, the liquid flows through the rectifier, which adjoins the mass element in the direction of the front end of the nozzle body. The rectifier results in a calming of the liquid jet by attenuating turbulence within the liquid jet. It can be achieved a virtually turbulence-free liquid flow, so that the risk is particularly low, that the liquid jet fanning out when leaving the nozzle body.

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

Figur 1:
einen schematischen Längsschnitt durch eine erfindungsgemäße Rotordüse mit einem Gehäuse, in dem ein Düsenkörper angeordnet ist;
Figur 2:
eine Seitenansicht des Düsenkörpers mit in Längsrichtung geschnittenem Gehäuse;
Figur 3:
eine Schnittansicht längs der Linie 3-3 in Figur 1 und
Figur 4:
eine Schnittansicht längs der Linie 4-4 in Figur 1.
The following description of a preferred embodiment of the invention serves in conjunction with the drawings for further explanation. Show it:
FIG. 1:
a schematic longitudinal section through a rotor nozzle according to the invention with a housing in which a nozzle body is arranged;
FIG. 2:
a side view of the nozzle body with longitudinally cut housing;
FIG. 3:
a sectional view taken along the line 3-3 in FIG. 1 and
FIG. 4:
a sectional view taken along the line 4-4 in FIG. 1 ,

In der Zeichnung ist schematisch eine Rotordüse 10 für ein in der Zeichnung nicht dargestelltes Hochdruckreinigungsgerät dargestellt, die auf ein Strahlrohr 12 des Hochdruckreinigungsgerätes aufgeschraubt ist. Das Strahlrohr 12 ist in der Zeichnung nur ausschnittsweise wiedergegeben, da es dem Fachmann an sich bekannt ist. Es umfasst einen Rohrabschnitt 13, an dessen in der Zeichnung nicht dargestelltes, der Rotordüse 10 abgewandtes Ende in üblicher Weise der Druckschlauch des Hochdruckreinigungsgerätes angeschlossen werden kann, sowie einen Verbindungsabschnitt 14 mit einem Außengewinde 16 zur lösbaren Verbindung des Strahlrohrs 12 mit der Rotordüse 10.In the drawing, a rotor nozzle 10 is shown schematically for a not shown in the drawing high-pressure cleaner, which is screwed onto a jet pipe 12 of the high-pressure cleaner. The jet pipe 12 is shown only in part in the drawing, since it is known to those skilled in the art. It comprises a pipe section 13, to whose not shown in the drawing, the rotor nozzle 10 end facing in a conventional manner, the pressure hose of the high-pressure cleaner can be connected, and a connecting portion 14 with an external thread 16 for releasably connecting the jet pipe 12 with the rotor nozzle 10th

Die Rotordüse 10 weist ein Gehäuse 20 auf mit einem ersten Gehäuseteil 21 und einem zweiten Gehäuseteil 22, die einen Innenraum 24 definieren. Das erste Gehäuseteil 21 hat einen kegelstumpfförmigen vorderen Gehäuseabschnitt 26 mit einer Stirnwand 28 und einem Mantel 30, sowie einen hinteren Gehäuseabschnitt 32, der sich einstückig an den vorderen Gehäuseabschnitt 26 anschließt und hohlzylindrisch ausgebildet ist. Es trägt ein Innengewinde 34, in das der Verbindungsabschnitt 14 des Strahlrohrs 12 mit seinem Außengewinde 16 eingeschraubt ist. In Richtung auf die Stirnwand 28 schließt sich an das Innengewinde 34 ein zylindrischer Dichtungsabschnitt 36 an, der über eine bezogen auf die Längsachse 38 des Gehäuses 20 radial nach innen gerichtete Schulter 40 in den im Wesentlichen kegelstumpfförmigen Innenraum 24 übergeht.The rotor nozzle 10 has a housing 20 with a first housing part 21 and a second housing part 22, which define an interior 24. The first housing part 21 has a frustoconical front housing portion 26 with an end wall 28 and a jacket 30, and a rear housing portion 32 which integrally connects to the front housing portion 26 and is formed as a hollow cylinder. It carries an internal thread 34, in which the connecting portion 14 of the jet pipe 12 is screwed with its external thread 16. Towards the end wall 28, a cylindrical sealing section 36 adjoins the internal thread 34, which merges into the substantially frustoconical interior space 24 via a shoulder 40 directed radially inward relative to the longitudinal axis 38 of the housing 20.

Das zweite Gehäuseteil 22 ist in Form einer Abschlussplatte 42 ausgestaltet, die den Innenraum 24 in axialer Richtung begrenzt und einerseits an der Schulter 40 und andererseits am freien Ende 44 des Strahlrohrs 12 anliegt. In die der Stirnwand 28 abgewandte Richtung schließt sich an die Abschlußplatte 42 ein das Strahlrohr 12 in Umfangsrichtung umgebender Dichtring 46 an, der eine flüssigkeitsdichte Verbindung des Strahlrohrs 12 mit der Rotordüse 10 gewährleistet.The second housing part 22 is configured in the form of a closure plate 42 which limits the interior 24 in the axial direction and rests on the one hand on the shoulder 40 and on the other hand on the free end 44 of the jet pipe 12. In the direction of the end wall 28 facing away from the closing plate 42 connects to the jet pipe 12 in the circumferential direction surrounding sealing ring 46, which ensures a liquid-tight connection of the jet pipe 12 with the rotor nozzle 10.

Die Abschlussplatte 42 weist mehrere, vorzugsweise vier, in Umfangsrichtung in gleichmäßigem Abstand zueinander angeordnete tangentiale Einlässe 48 auf, über die Flüssigkeit, die der Rotordüse 10 über das Strahlrohr 12 von einem Hochdruckreinigungsgerät zugeführt wird, in den Innenraum 24 eintreten kann. Aufgrund der tangentialen Ausrichtung der Einlässe 48 weist die in den Innenraum 24 eintretende Flüssigkeit eine bezogen auf die Längsachse 38 tangential ausgerichtete Richtungskomponente auf. Dadurch wird im Innenraum 24 Flüssigkeit um die Längsachse 38 des Gehäuses 20 in Rotation versetzt.The end plate 42 has a plurality, preferably four, in the circumferential direction at a uniform distance from each other arranged tangential inlets 48, via the liquid which is supplied to the rotor nozzle 10 via the jet pipe 12 from a high-pressure cleaner, can enter the interior 24. Due to the tangential orientation of the inlets 48, the liquid entering the interior space 24 has a directional component oriented tangentially relative to the longitudinal axis 38. As a result, liquid 24 is set in rotation in the interior 24 about the longitudinal axis 38 of the housing 20.

Die Stirnwand 28 des vorderen Gehäuseabschnitts 26 weist eine zentrale Durchbrechung 50 auf, die sich in die der Abschlussplatte 42 abgewandte Richtung konisch erweitert. Innenseitig ist die zentrale Durchbrechung 50 von einem pfannenförmigen Lagerring 52 umgeben, der außenseitig einen Dichtring 54 trägt und dadurch gegenüber dem vorderen Gehäuseabschnitt 26 abgedichtet ist.The end wall 28 of the front housing section 26 has a central opening 50 which widens conically in the direction away from the end plate 42. On the inside, the central opening 50 is surrounded by a cup-shaped bearing ring 52, which bears on the outside a sealing ring 54 and is thereby sealed from the front housing section 26.

Im Lagerring 52 stützt sich das kugelige vordere Ende 56 eines Düsenkörpers 60 ab. Dieser ist mehrteilig ausgestaltet. Er umfasst eine Düse 62, die das vordere Ende 56 des Düsenkörpers 60 ausbildet, sowie einen Düsenträger 64 mit einem sich in axialer Richtung entlang der Längsachse 66 des Düsenkörpers 60 erstreckenden Durchgangskanal 68, in den die Düse 62 mit einem fluchtend zum Durchgangskanal 68 ausgerichteten Düsenkanal 70 eingepresst ist und der sich in seinem der Düse 62 abgewandten Endbereich stufig erweitert. Im Bereich der Erweiterung ist in den Durchgangskanal 68 ein fliehkraftverstärkender Massekörper in Form einer Stahlkugel 72 eingepresst. An die Stahlkugel 72 schließt sich im Durchgangskanal 68 in Richtung der Düse 62 ein Gleichrichter 74 an, der zwei senkrecht aufeinander stehende, parallel zur Längsachse 66 des Düsenkörpers 60 verlaufende und den Durchgangskanal 68 diametral durchsetzende Wände 75, 76 aufweist.In the bearing ring 52, the spherical front end 56 of a nozzle body 60 is supported. This is designed in several parts. It comprises a nozzle 62, which forms the front end 56 of the nozzle body 60, and a nozzle carrier 64 with a passage 68 extending axially along the longitudinal axis 66 of the nozzle body 60 into which the nozzle 62 is aligned with a nozzle channel aligned with the passage 68 70 is pressed and extends in its nozzle 62 facing away from the end portion stepped. In the area of the extension, a centrifugal force-increasing mass body in the form of a steel ball 72 is pressed into the passage 68. The steel ball 72 is adjoined in the passage 68 in the direction of the nozzle 62 by a rectifier 74, which has two mutually perpendicular walls 75, 76 running parallel to the longitudinal axis 66 of the nozzle body 60 and penetrating the passage 68 diametrically.

Die Stahlkugel 72 kann im Durchgangskanal 68 von Flüssigkeit umströmt werden, so dass diese, nachdem sie den Gleichrichter 74 und die Düse 62 passiert hat, durch den Lagerring 52 und die zentrale Durchbrechung 50 hindurchströmen und dadurch die Rotordüse 10 verlassen kann.The steel ball 72 can be flowed around in the passageway 68 of liquid, so that, after passing through the rectifier 74 and the nozzle 62, it can flow through the bearing ring 52 and the central opening 50 and thereby leave the rotor nozzle 10.

Der Düsenträger 64 weist einen vorderen Umfangsbereich 78 mit kreisförmiger Außenkontur und einen sich daran anschließenden hinteren Umfangsbereich 80 mit von der Kreisform abweichender Außenkontur auf. Die von der Kreisform abweichende Außenkontur des hinteren Umfangsbereichs 80 wird mittels außenseitig vom Düsenträger 64 abstehender Rippen 82, 83, 84, 85, 86, 87, 88, 89 gebildet. Dies wird insbesondere aus Figur 3 deutlich. Die Rippen 82 und 86 stehen sich hierbei diametral gegenüber und sind jeweils radikal ausgerichtet bezogen auf die Längsachse 66 des Düsenkörpers 60. In entsprechender Weise stehen sich die Rippen 84 und 88 diametral gegenüber und sind radial ausgerichtet. Im Gegensatz hierzu sind die Rippen 83 und 89 fluchtend zueinander und parallel zu den Rippen 84 und 88 ausgerichtet, und die Rippen 85 und 87 sind ebenfalls fluchtend zueinander und parallel zu den Rippen 84 und 88 ausgerichtet. Der Abstand der Rippen 85 und 87 zu den Rippen 84 bzw. 88 ist identisch mit dem Abstand, den die Rippen 83 und 89 zu den Rippen 84 bzw. 88 aufweisen.The nozzle carrier 64 has a front peripheral region 78 with a circular outer contour and an adjoining rear peripheral region 80 with deviating from the circular shape outer contour. The outer contour of the rear peripheral region 80, which deviates from the circular shape, is formed by means of ribs 82, 83, 84, 85, 86, 87, 88, 89 projecting on the outside from the nozzle carrier 64. This is especially true FIG. 3 clear. The ribs 82 and 86 are in this case diametrically opposite and are each radically aligned with respect to the longitudinal axis 66 of the nozzle body 60. In a similar manner, the ribs 84 and 88 are diametrically opposite and are radially aligned. In contrast, the ribs 83 and 89 are aligned with each other and parallel to the ribs 84 and 88, and the ribs 85 and 87 are also aligned with each other and aligned parallel to the ribs 84 and 88. The spacing of ribs 85 and 87 with ribs 84 and 88, respectively, is identical to the distance ribs 83 and 89 have from ribs 84 and 88, respectively.

In Höhe der Rippen 82 bis 89 weist der Düsenträger 64 im hinteren Umfangsbereich 80 eine in Umfangsrichtung umlaufende Ringnut 91 auf, in der ein O-Ring 92 reibschlüssig und dadurch drehfest gehalten ist. Bezogen auf die Längsachse 66 des Düsenkörpers 60 steht der O-Ring in radialer Richtung über die Rippen 82 bis 89 hervor. Er bildet eine Anlagefläche aus, mit der der Düsenkörper 60 an die Innenwand 94 des Gehäuses 20 anlegbar ist. Wie insbesondere aus den Figuren 1 und 2 deutlich wird, erstrecken sich die Rippen 82 bis 89 in axialer Richtung zu beiden Seiten des O-Rings 92, wobei sie bis zu dem dem vorderen Ende 56 abgewandten hinteren Ende 96 des Düsenkörpers 60 verlaufen.At the level of the ribs 82 to 89, the nozzle carrier 64 in the rear peripheral region 80 has a circumferentially circumferential annular groove 91 in which an O-ring 92 is frictionally held and thereby rotationally fixed. Relative to the longitudinal axis 66 of the nozzle body 60, the O-ring protrudes in the radial direction beyond the ribs 82 to 89. It forms a contact surface, with which the nozzle body 60 can be applied to the inner wall 94 of the housing 20. As in particular from the Figures 1 and 2 is clear, the ribs 82 to 89 extend in the axial direction to both sides of the O-ring 92, wherein they extend to the front end 56 facing away from the rear end 96 of the nozzle body 60.

In axialer Richtung erstrecken sich die Rippen 82 bis 89 über weniger als die Hälfte der Gesamtlänge des Düsenkörpers 60. Im dargestellten Ausführungbeispiel beträgt die Länge der Rippen 82 bis 89 weniger als 40 % der Gesamtlänge des Düsenkörpers 60, beispielsweise 30 % bis 35 % der Gesamtlänge.In the axial direction, the ribs 82 to 89 extend over less than half the total length of the nozzle body 60. In the illustrated embodiment example the length of the ribs 82 to 89 is less than 40% of the total length of the nozzle body 60, for example 30% to 35% of the total length.

Wie bereits erläutert, wird im Betrieb der Rotordüse 10 über das Strahlrohr 12 unter hohem Druck stehende Flüssigkeit, beispielsweise Wasser, von einem Hochdruckreinigungsgerät zugeführt. Die Flüssigkeit gelangt über die tangentialen Einlässe 48 in den Innenraum 24 des Gehäuses 20 und kann den Innenraum über den Durchgangskanal 68, den Düsenkanal 70, den Lagerring 52 und daran anschließend über die zentrale Durchbrechung 50 verlassen. Der Innenraum 24 ist im Betrieb der Rotordüse 10 mit Flüssigkeit gefüllt, die von der über die tangentialen Einlässe 48 einströmenden Flüssigkeit um die Längsachse 38 des Gehäuses 20 in Drehung versetzt wird. Es bildet sich somit im Innenraum 24 eine um die Längsachse 38 rotierende Flüssigkeitssäule aus. Die rotierende Flüssigkeitssäule nimmt den sich mit seinem kugeligen vorderen Ende 56 im Lagerring 52 abstützenden Düsenkörper 60 mit, so dass dieser ebenfalls um die Längsachse 38 des Gehäuses 20 rotiert. Der Düsenkörper 60 liegt über den drehfest am Düsenkörper 60 gehaltenen O-Ring 92 an der Innenwand 94 des Gehäuses 20 an. Die Längsachse 66 des Düsenkörpers 60 ist somit zur Längsachse 38 des Gehäuses 20 geneigt. Der hintere Umfangsbereich 80 des Düsenkörpers 60 befindet sich aufgrund der Neigung des Düsenkörpers 60 zumindest in Höhe der Stahlkugel 72 auf nur einer Seite der Längsachse 38 des Gehäuses 20, wohingegen der vordere Umfangsbereich 78 sich sowohl auf der einen Seite als auch auf der gegenüberliegenden anderen Seite der Längsachse 38 erstreckt. Dies wird aus den Figuren 3 und 4 deutlich. Figur 3 zeigt eine Schnittansicht senkrecht zur Längsachse 38 des Gehäuses 20 in Höhe der Stahlkugel 72, und Figur 4 zeigt eine Schnittansicht senkrecht zur Längsachse 38 des Gehäuses 20 ungefähr in der Mitte des vorderen Umfangsbereichs 78.As already explained, in operation, the rotor nozzle 10 is supplied via the jet pipe 12 under high pressure liquid, for example water, from a high-pressure cleaning device. The liquid passes via the tangential inlets 48 into the interior 24 of the housing 20 and can leave the interior via the through-channel 68, the nozzle channel 70, the bearing ring 52 and subsequently via the central opening 50. The interior 24 is filled with liquid during operation of the rotor nozzle 10, which is caused to rotate about the longitudinal axis 38 of the housing 20 by the fluid flowing in via the tangential inlets 48. It thus forms in the interior 24 a rotating about the longitudinal axis 38 liquid column. The rotating liquid column takes with its spherical front end 56 in the bearing ring 52 supporting the nozzle body 60, so that it also rotates about the longitudinal axis 38 of the housing 20. The nozzle body 60 rests against the inner wall 94 of the housing 20 via the O-ring 92 held non-rotatably on the nozzle body 60. The longitudinal axis 66 of the nozzle body 60 is thus inclined to the longitudinal axis 38 of the housing 20. The rear peripheral portion 80 of the nozzle body 60 is due to the inclination of the nozzle body 60 at least equal to the steel ball 72 on only one side of the longitudinal axis 38 of the housing 20, whereas the front peripheral portion 78 on both sides and on the opposite side the longitudinal axis 38 extends. This will be out of the FIGS. 3 and 4 clear. FIG. 3 shows a sectional view perpendicular to the longitudinal axis 38 of the housing 20 in height of the steel ball 72, and FIG. 4 shows a sectional view perpendicular to the longitudinal axis 38 of the housing 20 approximately in the center of the front peripheral portion 78th

Aufgrund der Neigung des Düsenkörpers 60 relativ zur Längsachse 38 des Gehäuses 20 wird der hintere Umfangsbereich 80 in Höhe der Stahlkugel sowohl auf seiner bezogen auf die Längsachse 38 radialen Außenseite 98 als auch auf seiner bezogen auf die Längsachse 38 radialen Innenseite 99 von Flüssigkeit mit gleicher Strömungsrichtung umströmt. Die Geschwindigkeitsvektoren der den hinteren Umfangsbereich 80 in Höhe der Stahlkugel 72 umströmenden Flüssigkeit sind in Figur 3 durch die Pfeile 101 und 102 veranschaulicht. Der Pfeil 101 zeigt den Geschwindigkeitsvektor der Flüssigkeit, die den hinteren Umfangsbereich 80 auf der radialen Außenseite 98 umströmt, und der Pfeil 102 zeigt den Geschwindigkeitsvektor der Flüssigkeit, die den hinteren Umfangsbereich 80 an der radialen Innenseite 99 umströmt. An der radialen Außenseite 98 weist die Flüssigkeit eine höhere Geschwindigkeit auf als an der radialen Innenseite, die Richtung der Geschwindigkeiten stimmt aber überein. Dies hat zur Folge, dass im hinteren Umfangsbereich 80, der sich durch eine von der Kreisform abweichende Außenkontur auszeichnet, von der um die Längsachse 38 des Gehäuses 20 rotierenden Flüssigkeitssäule eine beachtliche Kraft auf den Düsenkörper 60 übertragen werden kann, so dass dieser der Umlaufbewegung der Flüssigkeitssäule um die Längsachse 38 folgt.Due to the inclination of the nozzle body 60 relative to the longitudinal axis 38 of the housing 20, the rear peripheral region 80 in height of the steel ball both on its relative to the longitudinal axis 38 radial outside 98 and on its relative to the longitudinal axis 38 radial inside 99 of liquid with the same flow direction flows around. The velocity vectors of the liquid flowing around the rear peripheral region 80 at the level of the steel ball 72 are in FIG. 3 illustrated by the arrows 101 and 102. The arrow 101 shows the velocity vector of the liquid flowing around the rear peripheral portion 80 on the radially outer side 98, and the arrow 102 shows the velocity vector of the liquid flowing around the rear peripheral portion 80 at the radial inner side 99. At the radial outer side 98, the liquid has a higher speed than at the radial inner side, but the direction of the speeds coincides. This has the consequence that in the rear peripheral region 80, which is characterized by a deviating from the circular outer contour, from the about the longitudinal axis 38 of the housing 20 rotating liquid column, a considerable force on the nozzle body 60 can be transferred, so that this the orbital movement of the Liquid column follows about the longitudinal axis 38.

In Figur 4 sind die Strömungsverhältnisse der den Düsenkörper 60 umströmenden Flüssigkeit veranschaulicht, wie sie im vorderen Umfangsbereich 78 vorliegen. Der vordere Umfangsbereich 78 weist einen verhältnismäßig kurzen Abstand zum Lagerring 52 auf. Trotz seiner Neigung zur Längsachse 38 weist daher der Düsenkörper 60 zu beiden Seiten der Längsachse 38 Umfangsbereiche auf, die jeweils von der um die Längsachse 38 rotierenden Flüssigkeit umströmt werden. Der Pfeil 104 symbolisiert den Geschwindigkeitsvektor der Flüssigkeit, die den vorderen Umfangsbereich 78 an einer ersten Seite umströmt, und der Pfeil 105 symbolisiert den Geschwindigkeitsvektor der Flüssigkeit, die den vorderen Umfangsbereich 78 auf der ersten Seite gegenüberliegenden zweiten Seite umströmt. Es wird deutlich, dass die Geschwindigkeitsvektoren 104 und 105 einander entgegengerichtet sind. Die den Düsenkörper 60 im vorderen Umfangsbereich 78 umströmende Flüssigkeit hat deshalb die Tendenz, den Düsenkörper 60 zu einer Eigenrotation um seine eigene Längsachse 66 anzutreiben. Da jedoch der vordere Umfangsbereich 78 im Gegensatz zum hinteren Umfangsbereich 80 eine kreisförmige Außenkontur aufweist, wird im vorderen Umfangsbereich 78 von der um die Längsachse 38 des Gehäuses 20 rotierenden Flüssigkeit nur eine verhältnismäßig geringe Kraft auf den Düsenkörper 60 übertragen. Dieser weist daher eine verhältnismäßig geringe Eigenrotation auf. Da er jedoch im hinteren Umfangsbereich 80 von der um die Längsachse 38 rotierenden Flüssigkeit sowohl innenseitig als auch außenseitig mit Kräften in gleicher Richtung beaufschlagt wird, die aufgrund der unrunden Außenkontur in diesem Bereich eine beträchtliche Größe aufweisen, wird der Düsenkörper 60 zuverlässig zu einer Umlaufbewegung um die Längsachse 38 angetrieben, ohne dass diese Kräfte eine Eigenrotation des Düsenkörpers 60 zur Folge haben.In FIG. 4 the flow conditions of the liquid flowing around the nozzle body 60 are illustrated as they are present in the front peripheral region 78. The front peripheral region 78 has a relatively short distance from the bearing ring 52. Despite its inclination to the longitudinal axis 38, therefore, the nozzle body 60 on both sides of the longitudinal axis 38 on peripheral regions, which are respectively flowed around by the liquid rotating about the longitudinal axis 38. The arrow 104 symbolizes the velocity vector of the liquid, which flows around the front peripheral region 78 on a first side, and the arrow 105 symbolizes the velocity vector of the liquid that flows around the front peripheral portion 78 on the first side opposite the second side. It can be seen that the velocity vectors 104 and 105 are opposite to each other. The liquid flowing around the nozzle body 60 in the front peripheral region 78 therefore has the tendency to drive the nozzle body 60 about its own longitudinal axis 66 for its own rotation. However, since the front peripheral portion 78 in contrast to the rear peripheral portion 80 has a circular outer contour, only a relatively small force is transmitted to the nozzle body 60 in the front peripheral portion 78 of the rotating about the longitudinal axis 38 of the housing 20 liquid. This therefore has a relatively low intrinsic rotation. However, since it is acted upon in the rear peripheral region 80 by the liquid rotating about the longitudinal axis 38 both on the inside and on the outside with forces in the same direction, which have a considerable size due to the non-round outer contour in this area, the nozzle body 60 reliably to a circulation movement the longitudinal axis 38 driven without these forces have a self-rotation of the nozzle body 60 result.

Die Umlaufbewegung des Düsenkörpers 60 um die Längsachse 38 hat zur Folge, dass aus dem Gehäuse 20 der Rotordüse 10 ein kompakter Reinigungsstrahl austritt, der auf einem Kegelmantel umläuft. Dieser kompakte Reinigungsstrahl ist für Reinigungszwecke besonders geeignet.The circulation movement of the nozzle body 60 about the longitudinal axis 38 has the consequence that emerges from the housing 20 of the rotor nozzle 10, a compact cleaning jet, which rotates on a conical surface. This compact cleaning jet is particularly suitable for cleaning purposes.

Claims (15)

  1. Rotor nozzle (10) for a high-pressure cleaning appliance with a housing (20), which comprises at least one inlet (48) for a liquid opening tangentially into the housing (20), and which is provided in a front wall (28) with a pan-shaped depression with a central opening, and with a nozzle body (60) arranged in the housing (20), the nozzle body (60) having a through-channel (68) and being supported with a spherical end (56) in the pan-shaped depression, and the longitudinal axis (66) of the nozzle body (60) being inclined to the longitudinal axis (38) of the housing (20), it being possible for liquid in the housing (20) to be caused to rotate about the longitudinal axis (38) of the housing (20) by the liquid flowing via the at least one inlet (48) into the housing (20), and the nozzle body (60) rotating together with the rotating liquid and in doing so bearing with a contact surface at its circumference against the inside wall (94) of the housing (20), and the nozzle body (60) having an outer contour deviating from the circular shape in a rear end area (80) facing away from the front, spherical end (56), and the contact surface being formed by an annular bead (92), characterized in that the annular bead (92) is rotationally fixedly connected to the nozzle body (60).
  2. Rotor nozzle in accordance with claim 1, characterized in that the area (80) of the nozzle body (60) with an outer contour deviating from the circular shape extends right up to the rear end (96) of the nozzle body (60).
  3. Rotor nozzle in accordance with claim 1 or 2, characterized in that the nozzle body (60) is of angular configuration in the area (80) with an outer contour deviating from the circular shape.
  4. Rotor nozzle in accordance with any one of the preceding claims, characterized in that the nozzle body (60) has outwardly protruding ribs (82 to 89) in its rear end area (80).
  5. Rotor nozzle in accordance with claim 4, characterized in that at least some ribs (82, 84, 86, 88) extend in a radial plane in relation to the longitudinal axis (66) of the nozzle body (60).
  6. Rotor nozzle in accordance with claim 4 or 5, characterized in that at least some ribs (83, 85, 87, 89) extend perpendicularly to a radial plane in relation to the longitudinal axis (66) of the nozzle body (60).
  7. Rotor nozzle in accordance with any one of the preceding claims, characterized in that the nozzle body (60) has a circular outer contour in an end area (78) facing the front, spherical end (56).
  8. Rotor nozzle in accordance with claim 7, characterized in that the area (78) with a circular outer contour extends over at least half of the total length of the nozzle body (60).
  9. Rotor nozzle in accordance with any one of the preceding claims, characterized in that the annular bead (92) is followed in the longitudinal direction of the nozzle body (60) on both sides by areas with an outer contour deviating from the circular shape.
  10. Rotor nozzle in accordance with claim 9, characterized in that the annular bead is formed by an O-ring (92) which is arranged in an annular groove (91) surrounding the nozzle body (60) and which is connected in a frictionally engaged manner to the nozzle body (60).
  11. Rotor nozzle in accordance with any one of the preceding claims, characterized in that the nozzle body (60) comprises in a rear end area (80) a mass element (72) which increases the centrifugal force.
  12. Rotor nozzle in accordance with any one of the preceding claims, characterized in that the through-channel (68) of the nozzle body (60) extends in the axial direction through the nozzle body (60).
  13. Rotor nozzle in accordance with claim 12, characterized in that a flow straightener (74) is arranged in the through-channel (68).
  14. Rotor nozzle in accordance with claim 12 or 13, characterized in that a mass element (72) which increases the centrifugal force and around which the liquid flows is arranged in a rear end area of the through-channel (68).
  15. Rotor nozzle in accordance with claim 14, characterized in that the flow straightener (74) follows the mass element (72) in the direction towards the front, spherical end (56) of the nozzle body (60).
EP10721790.3A 2009-05-25 2010-05-21 Rotary nozzle for a high-pressure cleaning device Active EP2435190B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10721790T PL2435190T3 (en) 2009-05-25 2010-05-21 Rotary nozzle for a high-pressure cleaning device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009023647A DE102009023647A1 (en) 2009-05-25 2009-05-25 Rotor nozzle for a high-pressure cleaning device
PCT/EP2010/057080 WO2010136412A1 (en) 2009-05-25 2010-05-21 Rotary nozzle for a high-pressure cleaning device

Publications (2)

Publication Number Publication Date
EP2435190A1 EP2435190A1 (en) 2012-04-04
EP2435190B1 true EP2435190B1 (en) 2015-09-30

Family

ID=42340725

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10721790.3A Active EP2435190B1 (en) 2009-05-25 2010-05-21 Rotary nozzle for a high-pressure cleaning device

Country Status (10)

Country Link
US (1) US8820659B2 (en)
EP (1) EP2435190B1 (en)
CN (1) CN102448616B (en)
BR (1) BRPI1012027B1 (en)
DE (1) DE102009023647A1 (en)
DK (1) DK2435190T3 (en)
ES (1) ES2551163T3 (en)
PL (1) PL2435190T3 (en)
RU (1) RU2491995C1 (en)
WO (1) WO2010136412A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2882538B1 (en) * 2012-08-07 2018-12-05 Alfred Kärcher SE & Co. KG Rotor nozzle for a high-pressure cleaning device
CN103551330A (en) * 2013-11-14 2014-02-05 宁夏中远天晟科技有限公司 High-pressure water-jet rust removing equipment for wagon
US9587776B2 (en) * 2014-02-03 2017-03-07 Gene G. Yie Method and apparatus for generating self rotating fluid jet
SG11201705756TA (en) * 2015-02-23 2017-08-30 Stoneage Inc Internally adjustable spray angle rotary nozzle
DK3265247T3 (en) * 2015-03-02 2019-04-01 Kaercher Alfred Se & Co Kg Rotor nozzle for a high pressure cleaner
JP6505245B2 (en) * 2015-03-02 2019-04-24 アルフレッド ケルヒャー エスエー ウント コンパニー カーゲー Rotor nozzle for high pressure cleaning equipment
US9682387B2 (en) 2015-11-17 2017-06-20 Fna Ip Holdings, Inc. Nozzle
US9878352B2 (en) * 2016-04-04 2018-01-30 Don M. Buckner High pressure surface cleaner and related methods
CN206881955U (en) * 2017-04-17 2018-01-16 福建西河卫浴科技有限公司 One kind centrifugation aproll structure and gondola water faucet
US11369979B2 (en) 2017-08-10 2022-06-28 Church & Dwight Co., Inc. High impact spray nozzle
CN107720227B (en) * 2017-11-03 2023-11-07 九牧厨卫股份有限公司 Duplex position feeding mechanism with cleaning function
CN111330753B (en) * 2020-03-13 2022-03-22 江苏大学 An impeller-driven rotary nozzle and a method for adjusting its rotational speed

Family Cites Families (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US996480A (en) 1910-05-24 1911-06-27 George L Glaser Spraying-nozzle.
US1097410A (en) 1913-01-15 1914-05-19 Henry E Flack Washing apparatus.
US1862381A (en) 1930-02-24 1932-06-07 Moon Axel R Le Sprinkler nozzle
US1919244A (en) 1930-05-26 1933-07-25 Elmer G Munz Rotary spraying device
US1970126A (en) 1932-05-09 1934-08-14 William A Buckner Rotary cam drive sprinkler
US2290979A (en) 1941-06-14 1942-07-28 Hydro Blast Corp Sandblasting device
FR1087714A (en) 1953-11-23 1955-02-28 Spray method and device
US2758874A (en) 1954-01-04 1956-08-14 Nutritional Concentrates Inc Fluid discharge nozzle
US2854283A (en) 1956-07-30 1958-09-30 Rain Jet Corp Sprinkler head and nozzle for producing non-circular spray patterns
NL237482A (en) 1958-04-01
US2974877A (en) 1958-10-13 1961-03-14 Rain Jet Corp Shower heads
DE1139250B (en) 1960-08-22 1962-11-08 Frame Sa Spray device for dishwasher machines with a wobble body
US3107056A (en) 1961-01-31 1963-10-15 Moist O Matic Inc Sprinkler
US3126025A (en) 1961-09-08 1964-03-24 Dishwasx m machine
US3326468A (en) 1965-03-19 1967-06-20 Cloud Co Tank cleaning machine employing a piston actuated hydraulic clutch
CH566173A5 (en) 1973-06-04 1975-09-15 Aeromatic Ag
AT358417B (en) 1976-07-28 1980-09-10 Martin Josef HIGH PRESSURE WASHING LANCE
US4073438A (en) 1976-09-03 1978-02-14 Nelson Irrigation Corporation Sprinkler head
DE7813438U1 (en) 1978-05-03 1978-09-14 Kraenzle, Josef, 7918 Illertissen MULTIPLE NOZZLE HEAD
US4228559A (en) 1978-09-06 1980-10-21 Kirk Norbert A Brush device
DE7827011U1 (en) 1978-09-12 1979-01-04 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt DISHWASHER
SU845888A1 (en) * 1979-07-20 1981-07-15 Предприятие П/Я А-7179 Apparatus for washing vessels
DE7929277U1 (en) 1979-10-16 1980-02-14 Pumpenfabrik Urach, 7432 Urach ROTARY WASHING HEAD
US4320929A (en) 1980-08-20 1982-03-23 Oncor Corporation Sealed bearing system for hydraulically operated devices
GB2083764A (en) 1980-09-12 1982-03-31 Butterworth System Inc Sludge removal machine
CA1183888A (en) 1980-12-22 1985-03-12 Harvey E. Diamond Fluid valve with directional outlet jet of continuously changing direction
US4392617A (en) 1981-06-29 1983-07-12 International Business Machines Corporation Spray head apparatus
US4542853A (en) 1983-01-14 1985-09-24 Diamond Harvey E Fluid valve with directional outlet jet of continuously changing direction
GB2155817B (en) 1984-02-21 1988-06-08 Hitachi Maxell Nozzle for spray
GB8404490D0 (en) 1984-02-21 1984-03-28 Osmond D R C Water sprinklers for lawns &c
DE3419964C2 (en) 1984-05-29 1986-04-17 Alfred Kärcher GmbH & Co, 7057 Winnenden Spray head of a high pressure cleaning device
DE3532045A1 (en) 1985-09-09 1987-03-19 Josef Kraenzle ROTATIONAL NOZZLE
US4681260A (en) 1986-02-11 1987-07-21 The Toro Company Two piece variable stator for sprinkler nozzle flow control
DE3623368C2 (en) 1986-07-11 1993-12-02 Kaercher Gmbh & Co Alfred Rotor nozzle for a high pressure cleaning device
DK156158C (en) 1986-08-19 1997-09-01 Nilfisk Gerni As Apparatus for cleaning surfaces with a cleaning fluid jet produced by an oscillating nozzle body
DE3700587A1 (en) 1987-01-10 1988-07-21 Woma Maasberg Co Gmbh W Process for atomising and atomiser of a high-pressure liquid jet emerging from a nozzle
DK604987A (en) 1987-11-18 1989-05-19 Westergaard Knud E Ind As Oscillating nozzle
IT1220780B (en) 1988-06-15 1990-06-21 Interpump Spa HIGH FLEXIBILITY OF USE DEVICE FOR CLEANING SURFACES USING A LIQUID JET
DE3836053C1 (en) 1988-10-22 1990-01-11 Alfred Kaercher Gmbh & Co, 7057 Winnenden, De
DE3902478C1 (en) * 1989-01-27 1990-07-19 Josef 7918 Illertissen De Kraenzle
DE8909876U1 (en) 1989-01-27 1989-10-19 Jäger, Anton, 7913 Senden Rotor nozzle
US5236126A (en) 1989-02-23 1993-08-17 Anzen Motor Co., Ltd. Rotating nozzle apparatus with magnetic braking
EP0393689A1 (en) 1989-04-20 1990-10-24 Ingo R. Dipl.-Ing. Friedrichs Method for effect improvement of a nozzle producing a movable jet of fluid and device for carrying out this method
DE3915962C1 (en) 1989-05-17 1990-09-13 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De Adjustable high-pressure cleaning jet - has ball rotated by turbine blades and held in movable bearing
DE8909228U1 (en) 1989-07-31 1989-10-05 Falch - Reinigungstechnik GmbH, 7937 Obermarchtal Rotating nozzle
DE4013446C1 (en) 1990-04-27 1991-05-08 Alfred Kaercher Gmbh & Co, 7057 Winnenden, De
DE4129026C1 (en) 1991-08-31 1993-03-04 Alfred Kaercher Gmbh & Co, 7057 Winnenden, De
DE4239542A1 (en) * 1992-03-28 1993-09-30 Anton Jaeger Rotor nozzle for a high pressure cleaning device
DE4319743A1 (en) * 1993-06-15 1994-12-22 Anton Jaeger Rotor-type nozzle for a high-pressure cleaning unit
DE4433646C2 (en) 1993-09-29 1996-10-10 Anton Jaeger Rotor nozzle, in particular for a high-pressure cleaning device
DE4340184A1 (en) 1993-11-25 1995-06-01 Anton Jaeger Spray nozzle partic. for high pressure cleaning devices
EP0762941B1 (en) 1994-05-30 1998-08-19 Alfred Kärcher GmbH & Co. Rotary nozzle for high pressure cleaning appliances
DE19632323A1 (en) 1996-08-10 1998-02-12 Kaercher Gmbh & Co Alfred Rotor nozzle for a high pressure cleaning device
DE19820238A1 (en) * 1998-05-06 1999-11-11 Anton Jaeger Rotor jet for a high pressure cleaner
DE19821919B4 (en) * 1998-05-15 2013-05-16 Anton Jäger Rotary nozzle
DE19832568C2 (en) * 1998-07-20 2003-04-30 Anton Jaeger Rotary nozzle
DE20022545U1 (en) * 2000-09-22 2001-12-06 Alfred Kärcher GmbH & Co., 71364 Winnenden Rotor nozzle, in particular for a high-pressure cleaning device
RU20263U1 (en) * 2001-04-19 2001-10-27 Сибирский государственный университет путей сообщения SURFACE CLEANING DEVICE
DE102004047586B4 (en) * 2004-09-23 2006-10-05 Alfred Kärcher Gmbh & Co. Kg cleaning head
US20070289616A1 (en) * 2006-06-19 2007-12-20 Mark Vii Equipment Inc. Car wash apparatus with pivotable arms
EP2038067B1 (en) * 2006-06-30 2017-11-29 Nilfisk A/S Rotating nozzle
EP1920847B1 (en) * 2006-11-09 2017-04-05 Nilfisk A/S Rotating nozzle for a high-pressure cleaning device
DE202007005846U1 (en) 2007-04-20 2007-06-28 Schafstein, Bernd Liquid funnel for a rotary nozzle
DE202007006088U1 (en) * 2007-04-26 2007-06-28 Hans Einhell Ag Rotor nozzle for a cleaning device
DE102007051810A1 (en) * 2007-10-30 2009-05-07 Jäger, Anton Rotor nozzle system for high-pressure cleaning device, has rotors provided with nozzles and different from each other with respect to nozzle sizes, where speed of rotors regulated by ring nut on basis of fuel regulating amount

Also Published As

Publication number Publication date
BRPI1012027A2 (en) 2016-05-10
RU2011153014A (en) 2013-07-10
PL2435190T3 (en) 2016-02-29
US20120138706A1 (en) 2012-06-07
BRPI1012027B1 (en) 2020-06-09
EP2435190A1 (en) 2012-04-04
ES2551163T3 (en) 2015-11-16
WO2010136412A1 (en) 2010-12-02
CN102448616A (en) 2012-05-09
DK2435190T3 (en) 2015-12-14
CN102448616B (en) 2015-02-18
US8820659B2 (en) 2014-09-02
RU2491995C1 (en) 2013-09-10
DE102009023647A1 (en) 2010-12-02

Similar Documents

Publication Publication Date Title
EP2435190B1 (en) Rotary nozzle for a high-pressure cleaning device
DE3836053C1 (en)
DE4129026C1 (en)
EP0216034B1 (en) Rotating nozzle
DE69021893T2 (en) EXTENDABLE TURN SPRINTER DRIVED BY THE LIQUID CURRENT WITH ADJUSTABLE WATERING PATTERN.
EP0379654B1 (en) Rotating nozzle for a high-pressure cleaning device
DE4433646C2 (en) Rotor nozzle, in particular for a high-pressure cleaning device
EP0645191B1 (en) Nozzle
EP2099570B1 (en) Guiding air ring comprising a ring cavity and corresponding bell plate
EP1136133B1 (en) Cleaning nozzle
DE4221587C2 (en) Rotor nozzle, in particular for a high-pressure cleaning device working with cleaning fluid
EP2251091B1 (en) Rotor nozzle
EP2491641B1 (en) Electric machine, hydraulics unit
EP3265235B1 (en) Rotary nozzle for a high-pressure cleaning device
EP2882538B1 (en) Rotor nozzle for a high-pressure cleaning device
DE202007014420U1 (en) washing brush
DE4224664A1 (en) High pressure, cleaning liq. rotor nozzle - has housing formed by front sleeve part with outlet aperture, and rear coupling part with inlet port
EP3265247B1 (en) Rotary nozzle for a high-pressure cleaning device
EP0762941B1 (en) Rotary nozzle for high pressure cleaning appliances
CH661457A5 (en) HYDRAULICALLY ACTUATED CLAMPING CYLINDER FOR CLAMPING DEVICES ON A ROTATING SPINDLE, ESPECIALLY LATHE SPINDLE.
DE19820238A1 (en) Rotor jet for a high pressure cleaner
DE20019430U1 (en) Rotor nozzle for a high pressure cleaning device
WO2005065807A2 (en) Ultrasonic dispersion device
DE202005008470U1 (en) Rotary nozzle for cleaning containers has brake element with several openings mounted rotationally secured in or in front of inlet opening so that nozzle body is driven through fluid outflow
WO2022128085A1 (en) Rotary nozzle for a high-pressure cleaning device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20111123

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20150512

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: CH

Ref legal event code: NV

Representative=s name: ISLER AND PEDRAZZINI AG, CH

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 752075

Country of ref document: AT

Kind code of ref document: T

Effective date: 20151015

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502010010387

Country of ref document: DE

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2551163

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20151116

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

Effective date: 20151209

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150930

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150930

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151230

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150930

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150930

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160130

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150930

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150930

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160201

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502010010387

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20160701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160521

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160521

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150930

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20100521

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150930

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150930

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150930

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150930

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502010010387

Country of ref document: DE

Representative=s name: HOEGER, STELLRECHT & PARTNER PATENTANWAELTE MB, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502010010387

Country of ref document: DE

Owner name: ALFRED KAERCHER SE & CO. KG, DE

Free format text: FORMER OWNER: ALFRED KAERCHER GMBH & CO. KG, 71364 WINNENDEN, DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150930

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20200312

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LT

Payment date: 20200423

Year of fee payment: 11

Ref country code: NL

Payment date: 20200513

Year of fee payment: 11

Ref country code: ES

Payment date: 20200601

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20200416

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20200428

Year of fee payment: 11

REG Reference to a national code

Ref country code: LT

Ref legal event code: MM4D

Effective date: 20210521

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20210601

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 752075

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210521

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210521

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210521

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20210531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210601

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210531

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20220803

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210522

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210521

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230521

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20250310

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20250310

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20250327

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20250521

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20250516

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20250422

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20250601

Year of fee payment: 16