EP0252261A2 - Rotor nozzle for a high-pressure cleaning device - Google Patents

Rotor nozzle for a high-pressure cleaning device Download PDF

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Publication number
EP0252261A2
EP0252261A2 EP87107456A EP87107456A EP0252261A2 EP 0252261 A2 EP0252261 A2 EP 0252261A2 EP 87107456 A EP87107456 A EP 87107456A EP 87107456 A EP87107456 A EP 87107456A EP 0252261 A2 EP0252261 A2 EP 0252261A2
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EP
European Patent Office
Prior art keywords
rotor
axis
rotation
nozzle
nozzle according
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.)
Granted
Application number
EP87107456A
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German (de)
French (fr)
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EP0252261B1 (en
EP0252261A3 (en
Inventor
Heinz Dipl.-Ing. Dautel
Johann Georg Dipl.-Ing. Wesch
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Alfred Kaercher SE and Co KG
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Alfred Kaercher SE and Co KG
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Application filed by Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Priority to AT87107456T priority Critical patent/ATE71564T1/en
Publication of EP0252261A2 publication Critical patent/EP0252261A2/en
Publication of EP0252261A3 publication Critical patent/EP0252261A3/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/04Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
    • B05B3/0409Spraying 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 with moving, e.g. rotating, outlet elements
    • B05B3/0463Rotor nozzles, i.e. nozzles consisting of an element having an upstream part rotated by the liquid flow, and a downstream part connected to the apparatus by a universal joint

Definitions

  • the invention relates to a rotor nozzle for a high-pressure cleaning device with a housing, a turbine rotor rotatably mounted therein, which is flowed by a cleaning fluid and is thereby rotated, and with a nozzle arranged downstream of the rotor, the outlet axis of which forms an acute angle to the axis of rotation of the rotor and which is rotated by the rotor about its axis of rotation in such a way that the emerging jet of cleaning liquid revolves on a conical jacket.
  • Such a rotor nozzle is known from German Patent 34 19 964.
  • the nozzle which is part of the rotor, is supported on the housing by means of a ball bearing.
  • this area of the ball bearing can be used over a long period of time Sealing problems arise.
  • a rotor nozzle of the type described in the introduction in that the nozzle is arranged in a stilt which is supported with a spherical end in a pan which is open in the middle and held on the housing, while at the other end one with the rotor connected, engages at a radial distance from the rotor axis of rotation engages, which allows a free rotation about the longitudinal axis of the stilt relative to the rotor.
  • Such a construction changes the longitudinal axis of the stilt and thus the direction of the emerging jet with the speed of rotation of the rotor, i.e. the jet runs at a speed of the rotor along a conical circumferential surface, but on the other hand the support surface of the stilt rotates on the pan not at the same - possibly very high - speed, since the stilt can rotate freely about its longitudinal axis relative to the rotor.
  • the speed of the stilt about its own longitudinal axis is significantly lower than the speed of the rotor, so that the wear in the area of the pan is significantly reduced.
  • There is also a very advantageous seal in the area of the pan since the stilt with the spherical end is firmly against the pressure of the cleaning liquid passing through the nozzle Pan is pressed. This results in a perfect seal in this area.
  • a driver that allows the stilt to rotate freely about the longitudinal axis can be constructed in different ways, for example the driver can be designed as a pointed pin that dips into a central recess at the other end of the stilt.
  • a configuration has proven to be particularly advantageous in which the driver is designed as a pan-shaped recess into which the other end of the stilt is immersed. This other end is preferably spherical.
  • the pan can also have a spherical bottom with adjoining conical walls.
  • the stilt comprises an essentially cylindrical plastic body, into which a nozzle body made of metal is inserted.
  • Conventional nozzle bodies can be used, which are also used in high-pressure cleaning devices. These consist of particularly abrasion-resistant hard metal or steel, they can have an integrated rectifier.
  • the nozzle body forms the spherical end lying against the pan and if the pan is made of plastic.
  • the metal / plastic pairing then results in particularly favorable storage conditions.
  • the stilt has lateral inlet openings for the cleaning liquid.
  • the radial distance of the driver from the axis of rotation of the rotor is adjustable.
  • the angle of inclination of the longitudinal axis of the stilts with respect to the axis of rotation can also be changed, and thus also the angle of the exit jet with respect to the axis of rotation.
  • centrifugal weights are movably arranged on the rotor, which are acted upon by spring means in a position close to the axis of rotation, and that one of the centrifugal weights carries the driver.
  • centrifugal weights are applied to the inner wall of the housing when a maximum speed of the rotor is reached and thereby brake the rotor.
  • the centrifugal weights then also act as a centrifugal brake.
  • the rotor nozzle shown in FIG. 1 comprises a housing 1, which consists of an expanding influencing part 2 and an outflow part 3 screwed into it. Outflow part 3 and influence part 2 are sealed against one another by means of an annular seal 4.
  • the influencing part 2 has a central inflow opening 5, which has an internal thread 6 for connection to a jet pipe of a high-pressure cleaning device, which is not shown in the drawing and is known per se.
  • a deflection element 8 is screwed into a central bore 7, which has flow channels 9 for a cleaning liquid flowing into the housing via the inflow opening 5.
  • the flow channels 9 end in a bottom 10 of the influencing part 2 formed by the influencing part 2 and the deflecting element 8 screwed therein.
  • a central pivot pin 11 is held in the deflecting element 8 and protrudes from the deflecting element 8 into the open interior of the influencing part 2.
  • a rotor 12 is rotatably mounted on this pivot pin 11, which comprises an inner bearing body 13 acting as a flywheel mass and a turbine body 14 held in an annular manner thereon.
  • the turbine body consists, in a manner known per se, of individual blades which are arranged in the outlet region of the flow channels 9 in such a way that the rotor 12 is set in rotation about the pivot pin 11 by liquid emerging from the flow channels 9.
  • a snap ring 15 is provided for axially fixing the rotor 12 to the pivot pin 11.
  • the bearing body 13 can be made of bearing bronze, for example, while the turbine body 14 is usually made of plastic, for example polyoxymethylene.
  • the fluid emerging from the turbine body 14 collects in an order to the opposite steering element 8 collecting space 16, which is formed by the outflow part 3.
  • the collecting space 16 opens into a conically narrowing, central extension 17, which is closed off by means of an end wall 18.
  • a central, conically widening outlet opening 19 is arranged in the end wall 18.
  • annular pan 20 made of plastic, for example made of polyester. It is sealed off from the inner wall of the outflow part 3 by means of an annular seal 21 and has a central passage opening 22 which at the downstream end first has a conically narrowing bearing area 23 and then a conically widening outlet area 24.
  • the outlet area 24 is designed such that the likewise conically widening outlet opening 19 in the end wall 18 continuously adjoins the outlet area 24.
  • a spherical stilt 25 In the conically narrowing extension 17 of the outflow part 3 and in the collecting space 16 there is a spherical stilt 25.
  • This consists of an essentially cylindrical plastic part 26 with a step-like narrowing central blind hole 27 which is open to the outlet opening 19.
  • a nozzle body. per 28 made of metal, for example made of steel, which protrudes with a spherical end 29 from the plastic part 26.
  • the spherical end 29 dips into the bearing area 23 of the pan 20 and supports the stilts 25 in the pan 20.
  • the plastic part 26 ends in a peg-shaped extension 30, which is also spherical at its free end 31.
  • This spherically shaped end 31 immersed in a pan 32 acting as a driver integrally to the - is formed turbine body fourteenth
  • the pan 32 has a spherical bottom 33 in cross section, which is adjoined by a conically opening side wall 34. It is arranged at a radial distance from the axis of rotation of the rotor 12 defined by the pivot pin 11, so that the longitudinal axis of the ball stem 25 encloses an acute angle with respect to the axis of rotation of the rotor formed by the pivot pin 11.
  • the plastic part 26 has lateral inflow openings 35 for the cleaning liquid, which in this way reaches the blind hole 27 from the collecting space 16.
  • the nozzle body 28 is open at its end inserted into the plastic part 26 and is in the form of a rectifier 36. Downstream of the rectifier 36 is a central nozzle opening 37, which initially narrows and then has a continuous cross section, which opens into the outlet region 24 of the pan 20. Through the nozzle body 28, the cleaning liquid flowing into the blind hole 27 in the form of a sharp jet passes through the outlet opening 19 into the open.
  • the direction of the exit jet coincides with the longitudinal direction of the stilt 25, so it is inclined with respect to the axis of rotation of the rotor 12.
  • the inclination is determined by the radial distance of the pan 32 from the axis of rotation.
  • the cleaning liquid flows through the inflow opening 5 and the throughflow channels 9 through the turbine body 14, which is thereby set in rotation. From the collecting space adjoining the turbine body 14, the cleaning liquid then passes through the ball stilts 25 and the nozzle body 28 as a sharp jet into the open.
  • the pan 32 which acts as a driver, also runs in a circular path around the axis of rotation of the rotor, so that the stilts 25 are carried along a conical surface, the tip of which lies in the center of the spherical end 29 of the nozzle body 28. This also results in a movement on the outwardly opening conical surface for the exit jet of the cleaning liquid.
  • the spherical end 29 of the nozzle body 28 is pressed strongly against the bearing area 23 of the pan 20 by the liquid, so that a good seal is achieved in this area. Since the ball stilts 25 can rotate freely about their longitudinal axis both with respect to the pan 20 and with respect to the pan 32, the ball stilts rotate during operation about their own longitudinal axis, the speed of which is substantially below the speed of the rotor, that is to say the Ball stilts 25 essentially perform a wobbling movement in the pan 20 without a strong rotation about its own longitudinal axis occurring. As a result, the bearing formed by the pan 20 and the spherical end 29 of the nozzle body 28 is protected during operation.
  • FIGS. 2 and 3 which is constructed essentially similarly, corresponding parts are provided with the same reference numerals.
  • the pan 32 which serves as a driver for the ball stilts 25, is not connected in one piece or rigidly to the turbine body 14.
  • two centrifugal weights 39 and 40 are mounted on the rotor 12 by means of L-shaped arms 41 and 42, respectively, about bearing shafts 43 and 44 running transversely to the axis of rotation of the rotor 12 and at a distance therefrom.
  • the arms 41 and 42 each carry one of the centrifugal weights 39 and 40 on the legs 45 and 46, which run essentially parallel to the axis of rotation of the rotor, while the legs 47 and 48, which run essentially perpendicular to the axis of rotation of the rotor 12, are thereby pivotally and displaceably coupled to one another.
  • a tension spring 51 is arranged between the legs 45 and 46 and pivots the two centrifugal weights 39 and 40 into their position close to the axis of rotation (FIG. 2).
  • the two centrifugal weights 39 and 40 lie opposite each other in pairs symmetrically to the axis of rotation of the rotor.
  • the socket 32 into which, as in the exemplary embodiment in FIG. 1, the spherical end 31 of the spherical stilts 25 is immersed.
  • the centrifugal weights 39 and 40 are arranged in the collecting space 16 and are designed such that they finally come to rest against the inner wall 52 of the outflow part 3 when they are pivoted outwards.
  • the two centrifugal weights 39 and 40 are in a position close to the axis of rotation, before being switched on, in which they are brought by the tension spring 51.
  • the pan 32 acting as a driver is arranged essentially on the axis of rotation of the rotor, so that the longitudinal axis of the spherical stilts 25 coincides with the axis of rotation of the rotor (FIG. 2).
  • the liquid jet With a low liquid supply nothing changes, so that in this operating position the liquid jet initially coincides with the axis of rotation of the rotor.
  • the centrifugal weights 39 and 40 pivot outward against the force of the tension spring 51 (FIG. 3), so that the pan 32 acting as a driver has a larger decrease received from the axis of rotation of the rotor.
  • the opening angle of the cone shell depends on the speed of the rotor. At low speed, the opening angle is small, it increases with increasing speed.
  • the two centrifugal weights 39 and 40 rest against the inner wall 52 and brake the rotor, so that the centrifugal weights also serve as a centrifugal brake.
  • the paired arrangement of the centrifugal weights 39 and 40 means that unbalance of the rotor is avoided.

Abstract

A rotor nozzle for a high pressure cleaning apparatus has a rotor mounted to rotate within a housing driven by the flow of cleaning fluid with a fixed axis of rotation along the longitudinal axis of the housing. A nozzle mounted in an elongated member is captured between a driven portion of the rotor and a cup-like member open at its center and defining an exit orifice of the housing. The end of the nozzle assembly captured in the cup-like member preferably has a ball-shaped end to maintain a good seal. The point of connection of the driver to elongate member is radially offset with respect to the rotor axis of rotation to angle the exit axis of the nozzle at an acute angle with respect to the axis of rotation of the rotor. In an alternative form, the rotor includes counterweights that move radially outward against a spring force to provide an automatic adjustability of the exit angle as a function of the supply of the cleaning liquid.

Description

Die Erfindung betrifft eine Rotordüse für ein Hochdruckreinigungsgerät mit einem Gehäuse, einem darin drehbar gelagerten Turbinenrotor, der von einer Reinigungsflüssigkeit angeströmt und dadurch in Drehung versetzt wird, und mit einer stromabwärts des Rotors angeordneten Düse, deren Austrittsachse zur Drehachse des Rotors einen spitzen Winkel einschließt und die vom Rotor derart um dessen Drehachse gedreht wird, daß der austretende Strahl der Reinigungsflüssigkeit auf einem Kegelmantel umläuft.The invention relates to a rotor nozzle for a high-pressure cleaning device with a housing, a turbine rotor rotatably mounted therein, which is flowed by a cleaning fluid and is thereby rotated, and with a nozzle arranged downstream of the rotor, the outlet axis of which forms an acute angle to the axis of rotation of the rotor and which is rotated by the rotor about its axis of rotation in such a way that the emerging jet of cleaning liquid revolves on a conical jacket.

Eine solche Rotordüse ist aus der deutschen Patentschrift 34 19 964 bekannt. Bei dieser bekannten Rotordüse stützt sich die Düse, die Teil des Rotors ist, mittels eines Kugellagers am Gehäuse ab. Bei Hochdruckreinigungsgeräten, bei denen mit sehr hohen Flüssigkeitsdrücken und gegebenenfalls unter Zugabe von Chemikalien gearbeitet wird, können sich im Bereich dieses Kugellagers bei lang andauernder Benutzung Dichtungsprobleme ergeben.Such a rotor nozzle is known from German Patent 34 19 964. In this known rotor nozzle, the nozzle, which is part of the rotor, is supported on the housing by means of a ball bearing. In the case of high-pressure cleaning devices, which work with very high liquid pressures and, if appropriate, with the addition of chemicals, this area of the ball bearing can be used over a long period of time Sealing problems arise.

Es ist Aufgabe der Erfindung, eine gattungsgemäße Rotordüse derart weiterzubilden, daß auch im Langzeitbetrieb Schwierigkeiten bei der Dichtung vermieden werden.It is an object of the invention to develop a generic rotor nozzle such that difficulties in sealing are avoided even in long-term operation.

Diese Aufgabe wird bei einer Rotordüse der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, daß die Düse in einer Stelze angeordnet ist, die sich mit einem kugeligen Ende in einer in der Mitte offenen, am Gehäuse gehaltenen Pfanne abstützt, während am anderen Ende ein mit dem Rotor verbundener, in radialem Abstand von der Rotordrehachse angeordneter Mitnehmer angreift, der eine um die Längsachse der Stelze freie Drehung der Stelze relativ zu dem Rotor ermöglicht.This object is achieved according to the invention in a rotor nozzle of the type described in the introduction in that the nozzle is arranged in a stilt which is supported with a spherical end in a pan which is open in the middle and held on the housing, while at the other end one with the rotor connected, engages at a radial distance from the rotor axis of rotation engages, which allows a free rotation about the longitudinal axis of the stilt relative to the rotor.

Durch eine solche Konstruktion wird zwar die Längsachse der Stelze und damit die Richtung des austretenden Strahls mit der Drehgeschwindigkeit des Rotors verändert, das heißt der Strahl läuft mit der Drehgeschwindigkeit des Rotors längs einer kegeligen Umlauffläche, andererseits dreht sich aber die Abstützfläche der Stelze an der Pfanne nicht mit derselben - unter Umständen sehr hohen - Drehzahl, da die Stelze sich relativ zum Rotor um ihre Längsachse frei drehen kann. In der Praxis ist die Drehzahl der Stelze um die eigene Längsachse wesentlich geringer als die Drehzahl des Rotors, so daß dadurch die Abnützung im Bereich der Pfanne wesentlich herabgesetzt wird. Es ergibt sich außerdem eine sehr vorteilhafte Abdichtung im Bereich der Pfanne, da die Stelze mit dem kugeligen Ende durch den Druck der durch die Düse hindurchtretenden Reinigungsflüssigkeit fest gegen die Pfanne angepreßt wird. Dadurch ergibt sich eine einwandfreie Dichtung in diesem Bereich.Such a construction changes the longitudinal axis of the stilt and thus the direction of the emerging jet with the speed of rotation of the rotor, i.e. the jet runs at a speed of the rotor along a conical circumferential surface, but on the other hand the support surface of the stilt rotates on the pan not at the same - possibly very high - speed, since the stilt can rotate freely about its longitudinal axis relative to the rotor. In practice, the speed of the stilt about its own longitudinal axis is significantly lower than the speed of the rotor, so that the wear in the area of the pan is significantly reduced. There is also a very advantageous seal in the area of the pan, since the stilt with the spherical end is firmly against the pressure of the cleaning liquid passing through the nozzle Pan is pressed. This results in a perfect seal in this area.

Ein Mitnehmer, der eine freie Drehung der Stelze um die Längsachse ermöglicht, kann verschieden aufgebaut sein, beispielsweise kann der Mitnehmer als spitzer Stift ausgebildet sein, der in eine zentrale Ausnehmung am anderen Ende der Stelze eintaucht.A driver that allows the stilt to rotate freely about the longitudinal axis can be constructed in different ways, for example the driver can be designed as a pointed pin that dips into a central recess at the other end of the stilt.

Als besonders vorteilhaft hat sich eine Ausgestaltung herausgestellt, bei der der Mitnehmer als pfannenförmige Ausnehmung ausgebildet ist, in die das andere Ende der Stelze eintaucht. Dieses andere Ende ist dabei vorzugsweise kugelförmig ausgebildet. Die Pfanne kann ebenfalls einen kugeligen Boden mit sich daran anschließenden kegeligen Wänden aufweisen.A configuration has proven to be particularly advantageous in which the driver is designed as a pan-shaped recess into which the other end of the stilt is immersed. This other end is preferably spherical. The pan can also have a spherical bottom with adjoining conical walls.

Bei einer bevorzugten Ausführungsform ist vorgesehen, daß die Stelze einen im wesentlichen zylindrischen Kunststoffkörper umfaßt, in den ein Düsenkörper aus Metall eingesetzt ist. Es können dabei herkömmliche Düsenkörper verwendet werden, die auch sonst bei Hochdruckreinigungsgeräten eingesetzt werden. Diese bestehen aus besonders abriebfestem Hartmetall oder Stahl, sie können einen integrierten Gleichrichter aufweisen.In a preferred embodiment it is provided that the stilt comprises an essentially cylindrical plastic body, into which a nozzle body made of metal is inserted. Conventional nozzle bodies can be used, which are also used in high-pressure cleaning devices. These consist of particularly abrasion-resistant hard metal or steel, they can have an integrated rectifier.

Es ist dabei vorteilhaft, wenn der Düsenkörper das an der Pfanne anliegende, kugelige Ende bildet und wenn die Pfanne aus Kunststoff besteht. Die Metall/Kunststoff-Paarung ergibt dann besonders günstige Lagerbedingungen.It is advantageous if the nozzle body forms the spherical end lying against the pan and if the pan is made of plastic. The metal / plastic pairing then results in particularly favorable storage conditions.

Es kann vorgesehen sein, daß die Stelze seitliche Einlaßöffnungen für die Reinigungsflüssigkeit aufweist.It can be provided that the stilt has lateral inlet openings for the cleaning liquid.

Bei einer bevorzugten Ausführungsform ist vorgesehen, daß der radiale Abstand des Mitnehmers von der Drehachse des Rotors verstellbar ist. Dadurch läßt sich auch der Neigungswinkel der Längsachse der Stelze gegenüber der Drehachse verändern und damit auch der Winkel des Austrittsstrahles gegenüber der Drehachse.In a preferred embodiment it is provided that the radial distance of the driver from the axis of rotation of the rotor is adjustable. As a result, the angle of inclination of the longitudinal axis of the stilts with respect to the axis of rotation can also be changed, and thus also the angle of the exit jet with respect to the axis of rotation.

Besonders vorteilhaft ist es, wenn der Mitnehmer durch Federmittel in Richtung auf die Drehachse des Rotors vorgespannt ist und durch die Wirkung der Fliehkraft bei Drehung des Rotors entgegen der Wirkung der Federmittel in einen größeren Abstand von der Drehachse des Rotors bewegbar ist. Dadurch ändert sich der Winkel der Stelze und damit der Winkel des Austrittsstrahls gegenüber der Drehachse drehzahlabhängig, bei niedrigen Drehzahlen ist dieser Winkel klein, bei zunehmenden Drehzahlen nimmt dieser Winkel zu, das heißt der Öffnungswinkel des Strahlkegels wächst bei zunehmender Drehzahl des Rotors. Bei einer solchen Lösung kann die Bedienungsperson allein durch die Zuflußrate der Flüssigkeit und die dadurch bestimmbare Drehzahl des Rotors den Öffnungswinkel des Strahles beeinflussen.It when the driver is biased by spring means in the direction of the axis of rotation of the rotor and is movable by the effect of centrifugal force when rotating the rotor against the action of the spring means in a greater distance from the axis of rotation of the rotor. As a result, the angle of the stilt and thus the angle of the exit jet with respect to the axis of rotation change as a function of speed, at low speeds this angle is small, with increasing speeds this angle increases, i.e. the opening angle of the jet cone increases with increasing speed of the rotor. In such a solution, the operator can influence the opening angle of the jet solely through the flow rate of the liquid and the speed of the rotor that can be determined thereby.

Dabei kann vorgesehen sein, daß am Rotor beweglich Fliehkraftgewichte angeordnet sind, die durch Federmittel in eine drehachsennahe Stellung beaufschlagt werden, und daß eines der Fliehkraftgewichte den Mitnehmer trägt.It can be provided that centrifugal weights are movably arranged on the rotor, which are acted upon by spring means in a position close to the axis of rotation, and that one of the centrifugal weights carries the driver.

Besonders vorteilhaft ist es, wenn am Rotor zwei einander symmetrisch zur Drehachse gegenüberstehende Fliehkraftgewichte beweglich angeordnet sind. Es werden dann Unwuchten beim Drehen des Rotors vermieden.It is particularly advantageous if there are two on the rotor Centrifugal weights opposite each other symmetrically to the axis of rotation are movably arranged. Imbalances when turning the rotor are then avoided.

Es kann weiterhin vorgesehen sein, daß sich die Fliehkraftgewichte bei Erreichen .einer maximalen Drehzahl des Rotors an die Innenwand des Gehäuses anlegen und dadurch den Rotor bremsen. Die Fliehkraftgewichte wirken dann gleichzeitig als Fliehkraftbremse.It can further be provided that the centrifugal weights are applied to the inner wall of the housing when a maximum speed of the rotor is reached and thereby brake the rotor. The centrifugal weights then also act as a centrifugal brake.

Die nachfolgende Beschreibung bevorzugter Ausführungsformen der Erfindung dient im Zusammenhang mit der Zeichnung der näheren Erläuterung. Es zeigen:

  • Figur 1: eine Schnittansicht eines ersten bevorzugten Ausführungsbeispiels einer Rotordüse mit unverstellbarem Mitnehmer;
  • Figur 2: eine Ansicht ähnlich Figur 1 eines abgewandelten Ausführungsbeispiels einer Rotordüse mit drehzahlabhängig verstellbarem Mitnehmer bei geringen Drehzahlen und
  • Figur 3: eine Ansicht ähnlich Figur 2 bei hohen Drehzahlen.
The following description of preferred embodiments of the invention serves in conjunction with the drawing for a more detailed explanation. Show it:
  • Figure 1 is a sectional view of a first preferred embodiment of a rotor nozzle with an adjustable driver;
  • Figure 2: a view similar to Figure 1 of a modified embodiment of a rotor nozzle with speed-dependent driver at low speeds and
  • Figure 3: a view similar to Figure 2 at high speeds.

Die in Figur 1 dargestellte Rotordüse umfaßt ein Gehäuse 1, welches aus einem sich erweiternden Einflußteil 2 und einem in diesen eingeschraubten Ausflußteil 3 besteht. Ausflußteil 3 und Einflußteil 2 sind mittels einer Ringdichtung 4 gegeneinander abgedichtet.The rotor nozzle shown in FIG. 1 comprises a housing 1, which consists of an expanding influencing part 2 and an outflow part 3 screwed into it. Outflow part 3 and influence part 2 are sealed against one another by means of an annular seal 4.

Der Einflußteil 2 weist eine zentrale Einflußöffnung 5 auf, die ein Innengewinde 6 zum Anschluß an ein in der Zeichnung nicht dargestelltes, an sich bekanntes Strahlrohr eines Hochdruckreinigungsgerätes aufweist.The influencing part 2 has a central inflow opening 5, which has an internal thread 6 for connection to a jet pipe of a high-pressure cleaning device, which is not shown in the drawing and is known per se.

Von der sich erweiternden Seite des Einflußteiles 2 ist in eine zentrale Bohrung 7 ein Umlenkelement 8 eingeschraubt, welches Durchflußkanäle 9 für eine über die Einflußöffnung 5 in das Gehäuse einströmende Reinigungsflüssigkeit aufweist. Die Durchflußkanäle 9 enden in einem von dem Einflußteil 2 und dem darin eingeschraubten Umlenkelement 8. gebildeten Boden 10 des Einflußteiles 2.From the widening side of the influencing part 2, a deflection element 8 is screwed into a central bore 7, which has flow channels 9 for a cleaning liquid flowing into the housing via the inflow opening 5. The flow channels 9 end in a bottom 10 of the influencing part 2 formed by the influencing part 2 and the deflecting element 8 screwed therein.

In dem Umlenkelement 8 ist ein zentraler Drehzapfen 11 gehalten, der aus dem Umlenkelement 8 in den offenen Innenraum des Einflußteiles 2 hineinragt. Auf diesem Drehzapfen 11 ist drehbar ein Rotor 12 gelagert, der einen inneren als Schwungmasse wirkenden Lagerkörper 13 und einen ringförmig an diesem gehaltenen Turbinenkörper 14 umfaßt. Der Turbinenkörper besteht in an sich bekannter Weise aus einzelnen Schaufeln, die im Austrittsbereich der Durchflußkanäle 9 so angeordnet sind, daß der Rotor 12 durch aus den Durchflußkanälen 9 austretende Flüssigkeit in Drehung um den Drehzapfen 11 versetzt wird. Zur axialen Fixierung des Rotors 12 auf dem Drehzapfen 11 ist ein Sprengring 15 vorgesehen.A central pivot pin 11 is held in the deflecting element 8 and protrudes from the deflecting element 8 into the open interior of the influencing part 2. A rotor 12 is rotatably mounted on this pivot pin 11, which comprises an inner bearing body 13 acting as a flywheel mass and a turbine body 14 held in an annular manner thereon. The turbine body consists, in a manner known per se, of individual blades which are arranged in the outlet region of the flow channels 9 in such a way that the rotor 12 is set in rotation about the pivot pin 11 by liquid emerging from the flow channels 9. A snap ring 15 is provided for axially fixing the rotor 12 to the pivot pin 11.

Der Lagerkörper 13 kann beispielsweise aus Lagerbronze bestehen, während der Turbinenkörper 14 üblicherweise aus Kunststoff besteht, beispielsweise aus Polyoximethylen.The bearing body 13 can be made of bearing bronze, for example, while the turbine body 14 is usually made of plastic, for example polyoxymethylene.

Die aus dem Turbinenkörper 14 austretende Flüssigkeit sammelt sich in einem dem Um lenkelement 8 gegenüberliegenden Sammelraum 16, der von dem Ausflußteil 3 gebildet wird. Der Sammelraum 16 mündet in eine sich konisch verengende, zentrale Verlängerung 17, die mittels einer Abschlußwand 18 abgeschlossen ist. In der Abschlußwand 18 ist eine zentrale, sich konisch erweiternde Austrittsöffnung 19 angeordnet.The fluid emerging from the turbine body 14 collects in an order to the opposite steering element 8 collecting space 16, which is formed by the outflow part 3. The collecting space 16 opens into a conically narrowing, central extension 17, which is closed off by means of an end wall 18. A central, conically widening outlet opening 19 is arranged in the end wall 18.

An der Abschlußwand 18 liegt eine ringförmige Pfanne 20 aus Kunststoff an, beispielsweise aus Polyester. Sie ist gegenüber der Innenwand des Ausflußteils 3 mittels einer Ringdichtung 21 abgedichtet und weist eine zentrale Durchtrittsöffnung 22 auf, die am stromabwärts gelegenen Ende zunächst einen sich konisch verengenden Lagerbereich 23 und daran anschließend einen sich konisch erweiternden Austrittsbereich 24 aufweist. Der Austrittsbereich 24 ist so ausgebildet, daß die sich ebenfalls konisch erweiternde Austrittsöffnung 19 in der Abschlußwand 18 sich stetig an den Austrittsbereich 24 anschließt.On the end wall 18 is an annular pan 20 made of plastic, for example made of polyester. It is sealed off from the inner wall of the outflow part 3 by means of an annular seal 21 and has a central passage opening 22 which at the downstream end first has a conically narrowing bearing area 23 and then a conically widening outlet area 24. The outlet area 24 is designed such that the likewise conically widening outlet opening 19 in the end wall 18 continuously adjoins the outlet area 24.

In der sich konisch verengenden Verlängerung 17 des Ausflußteils 3 und in dem Sammelraum 16 befindet sich eine Kugelstelze 25. Diese besteht aus einem im wesentlichen zylindrischen Kunststoffteil 26 mit einer sich stufenförmig verengenden zentralen Sacklochbohrung27, die zur Austrittsöffnung 19 hin offen ist. In die Sacklochbohrung 27 ist ein Düsenkör-. per 28 aus Metall, beispielsweise aus Stahl, eingesetzt, der mit einem kugeligen Ende 29 aus dem Kunststoffteil 26 herausragt. Das kugelige Ende 29 taucht dabei in den Lagerbereich 23 der Pfanne 20 ein und stützt die Stelze 25 in der Pfanne 20 ab.In the conically narrowing extension 17 of the outflow part 3 and in the collecting space 16 there is a spherical stilt 25. This consists of an essentially cylindrical plastic part 26 with a step-like narrowing central blind hole 27 which is open to the outlet opening 19. In the blind hole 27 is a nozzle body. per 28 made of metal, for example made of steel, which protrudes with a spherical end 29 from the plastic part 26. The spherical end 29 dips into the bearing area 23 of the pan 20 and supports the stilts 25 in the pan 20.

Am andern Ende läuft das Kunststoffteil 26 in eine zapfenförmige Verlängerung 30 aus, die an ihrem freien Ende 31 ebenfalls kugelig ausgebildet ist. Dieses kugelig ausgebildete Ende 31 taucht in eine als Mitnehmer wirkende Pfanne 32 ein, die einstückig an den-Turbinenkörper 14 angeformt ist. Die Pfanne 32 hat im Querschnitt einen kugelförmigen Boden 33, an den sich eine sich kegelig öffnende Seitenwand 34 anschließt. Er ist im radialen Abstand von der durch den Drehzapfen 11 definierten Drehachse des Rotors 12 angeordnet, so daß die Längsachse der Kugelstelze 25 gegenüber der durch den Drehzapfen 11 gebildeten Drehachse des Rotors einen spitzen Winkel einschließt.At the other end, the plastic part 26 ends in a peg-shaped extension 30, which is also spherical at its free end 31. This spherically shaped end 31 immersed in a pan 32 acting as a driver integrally to the - is formed turbine body fourteenth The pan 32 has a spherical bottom 33 in cross section, which is adjoined by a conically opening side wall 34. It is arranged at a radial distance from the axis of rotation of the rotor 12 defined by the pivot pin 11, so that the longitudinal axis of the ball stem 25 encloses an acute angle with respect to the axis of rotation of the rotor formed by the pivot pin 11.

Der Kunststoffteil 26 weist seitliche Einströmöffnungen 35 für die Reinigungsflüssigkeit auf, die auf diesem Wege aus dem Sammelraum 16 in die Sacklochbohrung 27 gelangt. Der Düsenkörper 28 ist an seinem in das Kunststoffteil 26 eingeschobenen Ende offen und in Form eines Gleichrichters 36 ausgebildet. Stromabwärts-des Gleichrichters 36 schließt sich eine sich zunächst verengende und dann einen kontinuierlichen Querschnitt aufweisende, zentrale Düsenöffnung 37 an, die in den Austrittsbereich 24 der Pfanne 20 mündet. Durch den Düsenkörper 28 gelangt die in die Sacklochbohrung 27 eingeströmte Reinigungsflüssigkeit in Form eines scharfen Strahles durch die Austrittsöffnung 19 ins Freie. Die Richtung des Austrittsstrahles fällt dabei mit der Längsrichtung der Stelze 25 zusammen, sie ist also gegenüber der Drehachse des Rotors 12 geneigt. Die Neigung wird dabei durch den radialen Abstand der Pfanne 32 von der Drehachse bestimmt. Beim Betrieb der beschriebenen Rotordüse strömt die Reinigungsflüssigkeit durch die Einflußöffnung 5 und die Durchflußkanäle 9 durch den Turbinenkörper 14, der dadurch in Drehung versetzt wird. Aus dem sich an den Turbinenkörper 14 anschließenden Sammelraum gelangt die Reinigungsflüssigkeit dann durch die Kugelstelze 25 und den Düsenkörper 28 als scharfer Strahl ins Freie. Durch die Drehung des Rotors läuft auch die als Mitnehmer wirkende Pfanne 32 auf einer Kreisbahn um die Drehachse des Rotors um, so daß die Kugelstelze 25 längs einer Kegelfläche mitgenommen wird, deren Spitze im Mittelpunkt des kugeligen Endes 29 des Düsenkörpers 28 liegt. Dadurch ergibt sich auch für den Austrittsstrahl der Reinigungsflüssigkeit eine Bewegung auf einer sich nach außen hin öffnenden Kegelmantelfläche.The plastic part 26 has lateral inflow openings 35 for the cleaning liquid, which in this way reaches the blind hole 27 from the collecting space 16. The nozzle body 28 is open at its end inserted into the plastic part 26 and is in the form of a rectifier 36. Downstream of the rectifier 36 is a central nozzle opening 37, which initially narrows and then has a continuous cross section, which opens into the outlet region 24 of the pan 20. Through the nozzle body 28, the cleaning liquid flowing into the blind hole 27 in the form of a sharp jet passes through the outlet opening 19 into the open. The direction of the exit jet coincides with the longitudinal direction of the stilt 25, so it is inclined with respect to the axis of rotation of the rotor 12. The inclination is determined by the radial distance of the pan 32 from the axis of rotation. During operation of the rotor nozzle described, the cleaning liquid flows through the inflow opening 5 and the throughflow channels 9 through the turbine body 14, which is thereby set in rotation. From the collecting space adjoining the turbine body 14, the cleaning liquid then passes through the ball stilts 25 and the nozzle body 28 as a sharp jet into the open. Due to the rotation of the rotor, the pan 32, which acts as a driver, also runs in a circular path around the axis of rotation of the rotor, so that the stilts 25 are carried along a conical surface, the tip of which lies in the center of the spherical end 29 of the nozzle body 28. This also results in a movement on the outwardly opening conical surface for the exit jet of the cleaning liquid.

Es ist dabei wesentlich, daß das kugelige Ende 29 des Düsenkörpers 28 durch die Flüssigkeit kräftig gegen den Lagerbereich 23 der Pfanne 20 gepreßt wird, so daß in diesem Bereich eine gute Abdichtung erzielt wird. Da sich die Kugelstelze 25 um ihre Längsachse sowohl gegenüber der Pfanne 20 als auch gegenüber der Pfanne 32 frei drehen kann, stellt sich im Betrieb eine Eigendrehung der Kugelstelze um ihre eigene Längsachse ein, deren Drehzahl wesentlich unterhalb der Drehzahl des Rotors liegt, das heißt die Kugelstelze 25 führt im wesentlichen eine Taumelbewegung in der Pfanne 20 aus, ohne daß dabei eine starke Drehung um die eigene Längsachse auftritt. Dadurch wird das durch die Pfanne 20 und das kugelige Ende 29 des Düsenkörpers 28 gebildete Lager im Betrieb geschont.It is essential that the spherical end 29 of the nozzle body 28 is pressed strongly against the bearing area 23 of the pan 20 by the liquid, so that a good seal is achieved in this area. Since the ball stilts 25 can rotate freely about their longitudinal axis both with respect to the pan 20 and with respect to the pan 32, the ball stilts rotate during operation about their own longitudinal axis, the speed of which is substantially below the speed of the rotor, that is to say the Ball stilts 25 essentially perform a wobbling movement in the pan 20 without a strong rotation about its own longitudinal axis occurring. As a result, the bearing formed by the pan 20 and the spherical end 29 of the nozzle body 28 is protected during operation.

Bei dem in den Figuren 2 und 3 dargestellten Ausführungsbeispiel, das im wesentlichen ähnlich aufgebaut ist, sind einander entsprechende Teile mit denselben Bezugszeichen versehen.In the exemplary embodiment shown in FIGS. 2 and 3, which is constructed essentially similarly, corresponding parts are provided with the same reference numerals.

Rein äußerlich ergeben sich unwesentliche Unterschiede dadurch, daß das Ausflußteil 3 auf die Außenseite des Einflußteils 2 aufgeschraubt ist und daß die Verlängerung 17 nicht konisch, sondern zylindrisch ausgeführt ist. Der Drehzapfen 11 ist weiterhin bei dem Ausführungsbeispiel der Figuren 2 und 3 als einschraubbarer Drehzapfen ausgebildet, so daß der Sprengring 15 entfallen kann. All dies sind jedoch unwesentliche Unterschiede, eine entsprechende Ausgestaltung wäre auch beiM aUSFführungsbeispiel der Figur 1 möglich.Outwardly, there are insignificant differences in that the outflow part 3 is screwed onto the outside of the inflow part 2 and that the extension 17 is not conical but cylindrical. The pivot 11 is also formed in the embodiment of Figures 2 and 3 as a screw-in pivot, so that the snap ring 15 can be omitted. However, all of these are insignificant differences, a corresponding configuration would also be possible in the embodiment of FIG. 1.

Im Unterschied zum Ausführungsbeispiel der Figur 1 ist jedoch die Pfanne 32, die als Mitnehmer für die Kugelstelze 25 dient, nicht einstückig beziehungsweise starr mit dem Turbinenkörper 14 verbunden.In contrast to the exemplary embodiment in FIG. 1, however, the pan 32, which serves as a driver for the ball stilts 25, is not connected in one piece or rigidly to the turbine body 14.

Beim Ausführungsbeispiel der Figuren 2 und 3 sind am Rotor 12 zwei Fliehkraftgewichte 39 und 40 mittels L-förmiger Arme 41 beziehungsweise 42 um quer zur Drehachse des Rotors 12 und im Abstand zu dieser verlaufende Lagerwellen 43 beziehungsweise 44 gelagert. Die Arme 41 und 42 tragen an den im wesentlichen parallel zur Drehachse des Rotors verlaufenden Schenkeln 45 beziehungsweise 46 jeweils eines der Fliehkraftgewichte 39 und 40, während die im wesentlichen senkrecht zur Drehachse des Rotors 12 verlaufenden Schenkel 47 und 48 dadurch miteinander verschwenkbar und verschieblich gekoppelt.sind, daß ein kugeliges Ende 49 des Schenkels 47 in eine rechteckige Ausnehmung 50 am anderen Schenkel 48 eingreift. Zwischen den Schenkeln 45 und 46 ist eine Zugfeder 51 angeordnet, die die beiden Fliehkraftgewichte 39 und 40 in ihre drehachsennahe Position verschwenkt (Figur 2). Dabei liegen die beide Fliehkraftgewichte 39 und 40 sich paarig symmetrisch zur Drehachse des Rotors gegenüber.In the exemplary embodiment in FIGS. 2 and 3, two centrifugal weights 39 and 40 are mounted on the rotor 12 by means of L-shaped arms 41 and 42, respectively, about bearing shafts 43 and 44 running transversely to the axis of rotation of the rotor 12 and at a distance therefrom. The arms 41 and 42 each carry one of the centrifugal weights 39 and 40 on the legs 45 and 46, which run essentially parallel to the axis of rotation of the rotor, while the legs 47 and 48, which run essentially perpendicular to the axis of rotation of the rotor 12, are thereby pivotally and displaceably coupled to one another. are that a spherical end 49 of the leg 47th engages in a rectangular recess 50 on the other leg 48. A tension spring 51 is arranged between the legs 45 and 46 and pivots the two centrifugal weights 39 and 40 into their position close to the axis of rotation (FIG. 2). The two centrifugal weights 39 and 40 lie opposite each other in pairs symmetrically to the axis of rotation of the rotor.

In einem der beiden Fliehkraftgewichte 40 befindet sich die Pfanne 32, in die ebenso wie beim Ausführungsbeispiel der Figur 1 das kugelige Ende 31 der Kugelstelze 25 eintaucht.In one of the two centrifugal weights 40 there is the socket 32, into which, as in the exemplary embodiment in FIG. 1, the spherical end 31 of the spherical stilts 25 is immersed.

Die Fliehkraftgewichte 39 und 40 sind im Sammelraum 16 angeordnet und so ausgebildet, daß sie bei einer Verschwenkung nach außen schließlich an der Innenwand 52 des Ausflußteiles 3 zur Anlage kommen.The centrifugal weights 39 and 40 are arranged in the collecting space 16 and are designed such that they finally come to rest against the inner wall 52 of the outflow part 3 when they are pivoted outwards.

Im Betrieb befinden sich die beiden Fliehkraftgewichte 39 und 40 vor Einschalten der Flüssigkeitszufuhr in einer drehachsennahen Stellung, in die sie durch die Zugfeder 51 gebracht werden. In dieser Position ist die als Mitnehmer wirkende Pfanne 32 im wesentlichen auf der Drehachse des Rotors angeordnet, so daß die Längsachse der Kugelstelze 25 mit der Drehachse des Rotors zusammenfällt (Figur 2). Bei geringer Flüssigkeitszufuhr ändert sich daran nichts, so daß zunächst in dieser Betriebsstellung, der Flüssigkeitsstrahl mit der Drehachse des Rotors zusammenfällt.In operation, the two centrifugal weights 39 and 40 are in a position close to the axis of rotation, before being switched on, in which they are brought by the tension spring 51. In this position, the pan 32 acting as a driver is arranged essentially on the axis of rotation of the rotor, so that the longitudinal axis of the spherical stilts 25 coincides with the axis of rotation of the rotor (FIG. 2). With a low liquid supply nothing changes, so that in this operating position the liquid jet initially coincides with the axis of rotation of the rotor.

Erhöht sich die Drehzahl des Rotors bei gesteigerter Flüssigkeitszufuhr, schwenken die Fliehkraftgewichte 39 und 40 entgegen der Kraft der Zugfeder 51 nach außen (Figur 3), so daß die als Mitnehmer wirkende Pfanne 32 einen größeren Abstand von der Drehachse des Rotors erhält. Dies führt zu einer Neigung der Kugelstelze 25 gegenüber der Drehachse des Rotors, so daß nunmehr ein gegenüber der Drehachse des Rotors geneigter Flüssigkeitsstrahl abgegeben wird, der in der oben beschriebenen Weise auf einem Kegelmantel umläuft. Der Öffnungswinkel des Kegelmantels hängt von der Drehzahl des Rotors ab. Bei geringer Drehzahl ist der Öffnungswinkel klein, er wächst bei zunehmender Drehzahl. Beim Erreichen einer Maximaldrehzahl legen sich die beiden Fliehkraftgewichte 39 und 40 an die Innenwand 52 an und bremsen den Rotor, so daß die Fliehkraftgewichte gleichzeitig als Fliehkraftbremse dienen.If the speed of the rotor increases with increased fluid supply, the centrifugal weights 39 and 40 pivot outward against the force of the tension spring 51 (FIG. 3), so that the pan 32 acting as a driver has a larger decrease received from the axis of rotation of the rotor. This leads to an inclination of the ball stilts 25 with respect to the axis of rotation of the rotor, so that a liquid jet which is inclined with respect to the axis of rotation of the rotor is now emitted and rotates on a cone jacket in the manner described above. The opening angle of the cone shell depends on the speed of the rotor. At low speed, the opening angle is small, it increases with increasing speed. When a maximum speed is reached, the two centrifugal weights 39 and 40 rest against the inner wall 52 and brake the rotor, so that the centrifugal weights also serve as a centrifugal brake.

Die paarige Anordnung der Fliehkaftgewichte 39 und 40 führt dazu, daß Unwuchten des Rotors vermieden werden.The paired arrangement of the centrifugal weights 39 and 40 means that unbalance of the rotor is avoided.

Die Abhängigkeit des Öffnungswinkels des vom Reinigungsstrahl überstrichenen Kegels von der Drehzahl läßt sich durch die Wahl der Federkonstante der Zugfeder 51 einstellen.The dependence of the opening angle of the cone swept by the cleaning jet on the speed can be adjusted by the choice of the spring constant of the tension spring 51.

Während bei dem Ausführungsbeispiel der Figuren 2 und 3 die Verstellung des Abstandes der Pfanne 32 von-der Drehachse des Rotors drehzahlabhängig ist, wäre es auch möglich, die Pfanne 32 am Rotor 12 in radialer Richtung verschieblich zu lagern, beispielsweise mittels eines Gewindetriebes oder dergleichen. Es wäre dann möglich, den Abstand der Pfanne 32 von der Drehachse zu verstellen, so daß beispielsweise für verschiedene Einsatzzwecke mit unterschiedlichem, nach der Einstellung aber fest bleibendem Öffnungswinkel des Reinigungsstrahles gearbeitet werden kann.While in the exemplary embodiment in FIGS. 2 and 3 the adjustment of the distance of the socket 32 from the rotational axis of the rotor is speed-dependent, it would also be possible to mount the socket 32 on the rotor 12 so that it can be displaced in the radial direction, for example by means of a screw drive or the like. It would then be possible to adjust the distance of the pan 32 from the axis of rotation so that, for example for different purposes, it is possible to work with a different opening angle of the cleaning jet which remains fixed after the setting.

Claims (11)

1. Rotordüse für ein Hochdruckreinigungsgerät mit einem Gehäuse, einem darin drehbar gelagerten, von der Reinigungsflüssigkeit in Drehung versetzten Rotor und mit einer stromabwärts des Rotors angeordneten Düse, deren Austrittsachse zur Drehachse des Rotors einen spitzen Winkel einschließt und die vom Rotor derart um dessen Drehachse gedreht wird, daß der austretende Strahl der Reinigungsflüssigkeit auf einem Kegelmantel umläuft, dadurch gekennzeichnet, daß die Düse (28) in einer Stelze (25) angeordnet ist, die sich mit einem kugeligen Ende (19) in einer in der Mitte offenen, am Gehäuse (1) gehaltenen Pfanne (20) abstützt, während am anderen Ende (31) ein mit dem Rotor (12) verbundener, in radialem Abstand von der Rotordrehachse angeordneter Mitnehmer (32) angreift, der eine um die Längsachse der Stelze (25) freie Drehung der Stelze (25) relativ zu dem Rotor (12) ermöglicht.1.Rotor nozzle for a high-pressure cleaning device with a housing, a rotor which is rotatably mounted therein and rotated by the cleaning liquid and with a nozzle arranged downstream of the rotor, the outlet axis of which forms an acute angle to the axis of rotation of the rotor and which is rotated by the rotor about its axis of rotation is that the emerging jet of the cleaning liquid circulates on a conical jacket, characterized in that the nozzle (28) is arranged in a stilt (25) which has a spherical end (19) in a in the middle open on the housing ( 1) supported pan (20), while at the other end (31) a rotor (12) connected, arranged at a radial distance from the rotor axis of rotation (32) engages, which rotates freely about the longitudinal axis of the stilt (25) the stilt (25) relative to the rotor (12). 2. Rotordüse nach Anspruch 1, dadurch gekennzeichnet, daß der Mitnehmer (32) als pfannenförmige Ausnehmung ausgebildet ist, in die das andere Ende (31) der Stelze (25) eintaucht.2. Rotor nozzle according to claim 1, characterized in that the driver (32) is designed as a pan-shaped recess into which the other end (31) of the stilt (25) immersed. 3. Rotordüse nach Anspruch 2, dadurch gekennzeichnet, daß das andere Ende (31) kugelförmig ausgebildet ist.3. Rotor nozzle according to claim 2, characterized in that the other end (31) is spherical. 4. Rotordüse nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Stelze (25) einen im wesentlichen zylindrischen Kunststoffkörper (26) umfaßt, in den ein Düsenkörper (28) aus Metall eingesetzt ist.4. Rotor nozzle according to one of the preceding claims, characterized in that the stilt (25) comprises a substantially cylindrical plastic body (26) into which a nozzle body (28) made of metal is inserted. 5. Rotordüse nach Anspruch 4, dadurch gekennzeichnet, daß der Düsenkörper (28) das an-der Pfanne (20.) anliegende, kugelige Ende (29) bildet und daß die Pfanne (20) aus Kunststoff besteht.5. A rotor nozzle according to claim 4, characterized in that the nozzle body (28) forms the spherical end (29) lying against the pan (20.) and that the pan (20) consists of plastic. 6. Rotordüse nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Stelze (25) seitliche Einströmöffnungen (35) für die Reinigungsflüssigkeit aufweist.6. Rotor nozzle according to one of the preceding claims, characterized in that the stilt (25) has lateral inflow openings (35) for the cleaning liquid. 7. Rotordüse nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der radiale Abstand des Mitnehmers (32) von der Drehachse des Rotors (12) verstellbar ist.7. Rotor nozzle according to one of the preceding claims, characterized in that the radial distance of the driver (32) from the axis of rotation of the rotor (12) is adjustable. 8. Rotordüse nach Anspruch 7, dadurch gekennzeichnet, daß der Mitnehmer (32) durch Federmittel (51) in Richtung auf die Drehachse des Rotors (12) vorgespannt ist und durch die Wirkung der Fliehkraft bei Drehung des Rotors (12) entgegen der Wirkung der Federmittel (51) in einen größeren Abstand von der Drehachse des Rotors (12) bewegbar ist.8. Rotor nozzle according to claim 7, characterized in that the driver (32) is biased by spring means (51) in the direction of the axis of rotation of the rotor (12) and by the action of centrifugal force when the rotor (12) rotates against the action of Spring means (51) is movable a greater distance from the axis of rotation of the rotor (12). 9. Rotordüse nach Anspruch 8, dadurch gekennzeichnet, daß am Rotor (12) beweglich Fliehkraftgewichte (39, 40) angeordnet sind, die durch Federmittel (51) in eine drehachsennahe Stellung beaufschlagt werden, und daß eines der Fliehkraftgewichte (40) den Mitnehmer (32) trägt.9. Rotor nozzle according to claim 8, characterized in that on the rotor (12) movable centrifugal weights (39, 40) are arranged, which are acted upon by spring means (51) in a position close to the axis of rotation, and that one of the centrifugal weights (40) the driver ( 32) carries. 10. Rotordüse nach Anspruch 9, dadurch gekennzeichnet, daß am Rotor (12) zwei einander symmetrisch zur Drehachse gegenüberliegende Fliehkraftgewichte (39, 40) beweglich angeordnet sind.10. Rotor nozzle according to claim 9, characterized in that on the rotor (12) two mutually symmetrical to the axis of rotation opposite centrifugal weights (39, 40) are movably arranged. 11. Rotordüse nach einem der Ansprüche 9 oder 10, dadurch gekennzeichnet, daß sich die Fliehkraftgewichte (39, 40) bei Erreichen einer maximalen Drehzahl des Rotors (12) an die Innenwand (52) des Gehäuses (1) anlegen und dadurch den Rotor (12) bremsen.11. Rotor nozzle according to one of claims 9 or 10, characterized in that the centrifugal weights (39, 40) when reaching a maximum speed of the rotor (12) on the inner wall (52) of the housing (1) and thereby the rotor ( 12) brake.
EP87107456A 1986-07-11 1987-05-22 Rotor nozzle for a high-pressure cleaning device Expired - Lifetime EP0252261B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87107456T ATE71564T1 (en) 1986-07-11 1987-05-22 ROTARY NOZZLE FOR A HIGH-PRESSURE CLEANING DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3623368 1986-07-11
DE3623368A DE3623368C2 (en) 1986-07-11 1986-07-11 Rotor nozzle for a high pressure cleaning device

Publications (3)

Publication Number Publication Date
EP0252261A2 true EP0252261A2 (en) 1988-01-13
EP0252261A3 EP0252261A3 (en) 1989-03-01
EP0252261B1 EP0252261B1 (en) 1992-01-15

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US (1) US4802628A (en)
EP (1) EP0252261B1 (en)
JP (1) JPS6320055A (en)
AT (1) ATE71564T1 (en)
DE (2) DE3623368C2 (en)
DK (1) DK173979B1 (en)
ES (1) ES2029672T3 (en)
GR (1) GR3004015T3 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990004468A2 (en) * 1988-10-22 1990-05-03 Alfred Kärcher GmbH & Co. Rotor nozzle for a high-pressure cleaning device
DE3902478C1 (en) * 1989-01-27 1990-07-19 Josef 7918 Illertissen De Kraenzle
WO1993004785A1 (en) * 1991-08-31 1993-03-18 Alfred Kärcher GmbH & Co. Rotor nozzle for a high-pressure cleaning device
EP0548408A1 (en) * 1991-12-27 1993-06-30 K.E.W. Industri A/S Jet-producing head for high-pressure cleaners
EP0563595A1 (en) * 1992-03-28 1993-10-06 Anton Jäger Rotor nozzle for a high-pressure cleaning device
DE29708394U1 (en) * 1997-03-20 1998-07-16 Suttner Gmbh & Co Kg Rotor nozzle for a high pressure cleaning device
EP0865827A2 (en) 1997-03-20 1998-09-23 Suttner Gmbh & Co. Kg Rotary nozzle for high pressure cleaning appliances
US8820659B2 (en) 2009-05-25 2014-09-02 Alfred Kaercher Gmbh & Co. Kg Rotor nozzle for a high-pressure cleaning appliance
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US5941458A (en) * 1997-03-20 1999-08-24 Suttner Gmbh & Co. Kg Rotor nozzle for a high pressure cleaning device
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CN104379264A (en) * 2012-08-07 2015-02-25 阿尔弗雷德·凯驰两合公司 Rotor nozzle for a high-pressure cleaning device

Also Published As

Publication number Publication date
GR3004015T3 (en) 1993-03-31
ES2029672T3 (en) 1992-09-01
EP0252261B1 (en) 1992-01-15
DK358487D0 (en) 1987-07-10
JPS6320055A (en) 1988-01-27
DK358487A (en) 1988-01-12
ATE71564T1 (en) 1992-02-15
DE3623368C2 (en) 1993-12-02
DE3776008D1 (en) 1992-02-27
DK173979B1 (en) 2002-03-25
JPH0442068B2 (en) 1992-07-10
US4802628A (en) 1989-02-07
EP0252261A3 (en) 1989-03-01
DE3623368C1 (en) 1987-09-17

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