EP0915739A1 - Rotary nozzle for a high-pressure cleaning apparatus - Google Patents

Rotary nozzle for a high-pressure cleaning apparatus

Info

Publication number
EP0915739A1
EP0915739A1 EP97936691A EP97936691A EP0915739A1 EP 0915739 A1 EP0915739 A1 EP 0915739A1 EP 97936691 A EP97936691 A EP 97936691A EP 97936691 A EP97936691 A EP 97936691A EP 0915739 A1 EP0915739 A1 EP 0915739A1
Authority
EP
European Patent Office
Prior art keywords
housing
nozzle body
nozzle
rotor
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
EP97936691A
Other languages
German (de)
French (fr)
Other versions
EP0915739B1 (en
Inventor
Jürgen Binder
Robert Nathan
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
Publication of EP0915739A1 publication Critical patent/EP0915739A1/en
Application granted granted Critical
Publication of EP0915739B1 publication Critical patent/EP0915739B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B05B3/0409—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 with moving, e.g. rotating, outlet elements
    • B05B3/0463—Rotor 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, into which a supply line for cleaning liquid opens, with an outlet for the cleaning liquid, with a flow of the cleaning liquid, arranged in the housing nozzle body, which has a crowned end in a pan-shaped, the Supporting the outlet of the housing surrounding the bearing and which is caused by the flow of the cleaning liquid through the housing in a circular movement, in which the longitudinal axis of the nozzle body rotates on a conical jacket, the bearing supporting the nozzle body by a worked into the inner wall of the housing, concentrically Outlet arranged recess is formed.
  • Rotor nozzles are known for example from DE 40 13 446 B1. Due to the circulation of the nozzle body on a cone jacket, the jet of cleaning agent that is dispensed by it and discharged through the outlet from the housing is guided on a cone jacket, so that it is possible with such a rotor nozzle to cover a larger area with a jet that remains compact and has only a very small cross-section. With such rotor nozzles, the nozzle body is pressed into the recess in the axial direction with great force; In order to be able to absorb these forces, efforts have therefore been made in known rotor nozzles to use special bearing surfaces in the housing which are able to cope with the stress caused by the system of the rotor body. This leads to a relatively complex construction, since a special bearing body that supports the nozzle body must be inserted into the housing.
  • the opening angle of the depression is between 110 ° and 150 °, in particular between 120 ° and 140 °, preferably 130 °.
  • the spherical end of the nozzle body can be spherical, it being advantageous if the radius is between 3 mm and 7 mm, preferably 5 mm.
  • the housing consists of plastic, in particular polyamide, it being advantageous if the polyamide contains a glass fiber component, for example in the order of 30%.
  • the housing has a housing foot, into which the feed line opens, and a housing hood which can be connected to the housing and into which the outlet with the recess is incorporated. This makes it possible to separate the housing in a simple manner, the housing cover can be replaced, so that if there are signs of wear in the area of the bearing, a new housing cover is simply placed on the housing base.
  • the housing base and housing hood can preferably be connected to one another by screwing.
  • the nozzle body consists of a tubular body with a nozzle inserted into it, which forms the spherical end of the nozzle body.
  • the nozzle body comprises a tubular body, one end of which forms the spherical end of the nozzle body.
  • the nozzle body itself forms the circulating body with the flow channel, the nozzle and the spherical end for support in the recess.
  • the nozzle body consists of plastic, in particular of polyether ether ketone, at least in the region of the spherical end.
  • the material pairing of glass fiber reinforced polyamide / polyether ether ketone is particularly low-wear, so that a long service life can be achieved with a pairing of such plastics, although no special bearing bodies are provided. Overall, the manufacturing costs and the manufacturing outlay can be reduced considerably because it is sufficient to produce the nozzle body and housing hoods from plastic in the usual manner of production, these parts can then be used in the rotor nozzle without further changes.
  • Figure 1 is a longitudinal sectional view of a rotor nozzle according to a first preferred embodiment
  • Figure 2 is a view similar to Figure 1 according to a second preferred embodiment.
  • the rotor nozzle shown in the drawing is attached to the end of a supply line 1 in order to dispense cleaning liquid, which is supplied via the supply line from a high-pressure cleaning device, under high pressure in a compact jet which circulates along a cone jacket.
  • the feed line 1 opens into a housing foot 2, which essentially has the shape of a pot with an external thread 3.
  • the confluence of the supply line 1 takes place centrally, the supply line 1 through the Bottom 4 of the cup-shaped housing base 2 passes through and extends approximately to the upper edge 5 of the cup-shaped housing base 2.
  • the supply line 1 is closed at the end, but an opening 6 leads out of the supply line 12, which is oriented such that the liquid emerging from this opening 6 has an essential component which lies in a plane lying perpendicular to the supply line 1 and which runs in the circumferential direction with respect to the longitudinal axis of the feed line 1.
  • a hood 7 is screwed onto the external thread 3 of the housing base 2 and forms a closed housing together with the housing base 2.
  • This hood 7 has, on the side opposite the housing base 2, a conically widening outlet opening 8, which has a conical recess 9 in the direction of the interior of the housing, which is arranged concentrically to the outlet opening 8 and has an opening angle of approximately 130 °.
  • This recess 9 forms a pan-shaped bearing for the spherical end 10 of an essentially tubular nozzle body 11, which has a flow channel 12 which is continuous in the longitudinal direction.
  • This flow channel 12 ends in a nozzle opening 13 which emerges centrally from the spherical end 10 and is aligned with the outlet opening 8.
  • the tubular nozzle body 11 carries two on the outside at its end opposite the crowned end 10 circumferential O-rings 14, 15, which are supported on the inner wall 16 of the hood 7.
  • the nozzle body 11 is made entirely of plastic, preferably of polyether ether ketone, and the housing is also preferably made of plastic, for example of polyamide with a glass fiber content of 30%.
  • the particularly stressed bearing area between the spherical end 10 and the recess 9 in the inner wall of the hood 7 shows surprisingly little wear with such a construction, so that long service lives can be achieved with such a rotor nozzle.
  • the parts can be produced in the simplest way, since the hood 7 is designed as a one-piece molded part, and the same applies essentially to the nozzle body 11.
  • These parts can also be exchanged in the simplest manner by unscrewing the hood 7 from the housing base 2 and replacing it with a new one is replaced. On this occasion, the nozzle body 11 can also be replaced in a simple manner if the wear should exceed a certain level.
  • the housing base 2 is here open at the top, the feed line 1 opens directly into the interior of the housing base 2.
  • the housing base 2 is closed by a cover 17 via a seal 18, here too the liquid is introduced tangentially through an opening, not shown in this drawing, into the area enclosed by the hood 7.
  • the nozzle body 11 is formed in several parts, namely that a special nozzle 19 is inserted into the front end of the essentially tubular nozzle body 11, the end of which protrudes from the nozzle body 11 forms the spherical end 10 of the nozzle body 11.
  • This nozzle body 11 is also made of plastic, as is the nozzle 19 used, which can be produced, for example, from polyether ether ketone. Otherwise, the rotor nozzle is constructed in the same way and also works in the same way as that of FIG. 1.
  • the configurations of the two different housing feet can also be exchanged. For example, it is easily possible to use a nozzle body 11 with an inserted nozzle 19 in the exemplary embodiment of FIG Figure 1 to use and vice versa.

Landscapes

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

Abstract

A rotary nozzle for a high-pressure cleaning apparatus has a housing into which a feed line for a cleaning fluid issues, an outlet provided in the housing for expelling the cleaning fluid, a nozzle body through which the cleaning fluid flows, and a bearing that surrounds the outlet. The nozzle body is disposed in the housing, and is supported at its convex end in the bearing. The bearing is formed directly in an inner wall of the housing as a conically-shaped depression to avoid the need for a separate bearing insert, thereby simplifying the manufacturing process. Additionally, the conical shape of the bearing cooperates with the convex shape of the nozzle body to provide optimal sealing with a reduced contact surface for a long service life. The bearing is disposed concentrically relatively to the outlet. The nozzle body is set by the flow of cleaning fluid through the housing in a revolving movement in which a longitudinal axis of the nozzle body revolves on a generated cone.

Description

ROTORDÜSE FÜR EIN HOCHDRUCKREINIGUNGSGERÄT ROTOR NOZZLE FOR A HIGH PRESSURE CLEANER
Die Erfindung betrifft eine Rotordüse für ein Hochdruckreinigungsgerät mit einem Gehäuse, in das eine Zufuhrleitung für Reinigungsflüssigkeit einmündet, mit einem Auslaß für die Reinigungsflüssigkeit, mit einem von der Reinigungsflüssigkeit durchströmten, im Gehäuse angeordneten Düsenkörper, der sich mit einem balligen Ende in einem pfannenförmigen, den Auslauf des Gehäuses umgebenden Lager abstützt und der durch den Strom der Reinigungsflüssigkeit durch das Gehäuse in eine Umlaufbewegung versetzt wird, bei der die Längsachse des Düsenkörpers auf einem Kegelmantel umläuft, wobei das den Düsenkörper abstützende Lager durch eine in die Innenwand des Gehäuses eingearbeitete, konzentrisch zum Auslaß angeordnete Vertiefung gebildet wird.The invention relates to a rotor nozzle for a high-pressure cleaning device with a housing, into which a supply line for cleaning liquid opens, with an outlet for the cleaning liquid, with a flow of the cleaning liquid, arranged in the housing nozzle body, which has a crowned end in a pan-shaped, the Supporting the outlet of the housing surrounding the bearing and which is caused by the flow of the cleaning liquid through the housing in a circular movement, in which the longitudinal axis of the nozzle body rotates on a conical jacket, the bearing supporting the nozzle body by a worked into the inner wall of the housing, concentrically Outlet arranged recess is formed.
Rotordüsen sind beispielsweise aus der DE 40 13 446 Bl bekannt. Durch den Umlauf des Düsenkörpers auf einem Kegelmantel wird auch der von ihm abgegebene und durch den Auslaß aus dem Gehäuse entlassene Strahl des Reinigungsmittels auf einem Kegelmantel geführt, so daß es möglich ist, mit einer solchen Rotordüse eine größere Fläche mit einem Strahl zu überstreichen, der selbst kompakt bleibt und nur einen sehr kleinen Querschnitt hat. Bei derartigen Rotordüsen wird der Düsenkörper mit großer Kraft in axialer Richtung in die Vertiefung hineingedrückt; um diese Kräfte aufnehmen zu können, ist man bei bekannten Rotordüsen daher bestrebt gewesen, spezielle Lagerflächen in das Gehäuse einzusetzen, die der Beanspruchung durch die Anlage des Rotorkörpers gewachsen sind. Dies führt zu einer relativ aufwendigen Konstruktion, da in das Gehäuse ein spezieller Lagerkörper eingesetzt werden muß, der den Düsenkörper abstützt.Rotor nozzles are known for example from DE 40 13 446 B1. Due to the circulation of the nozzle body on a cone jacket, the jet of cleaning agent that is dispensed by it and discharged through the outlet from the housing is guided on a cone jacket, so that it is possible with such a rotor nozzle to cover a larger area with a jet that remains compact and has only a very small cross-section. With such rotor nozzles, the nozzle body is pressed into the recess in the axial direction with great force; In order to be able to absorb these forces, efforts have therefore been made in known rotor nozzles to use special bearing surfaces in the housing which are able to cope with the stress caused by the system of the rotor body. This leads to a relatively complex construction, since a special bearing body that supports the nozzle body must be inserted into the housing.
Aus der DE 90 04 452 Ul ist eine Rotordüse bekannt, bei welcher die Beanspruchung im Lagerbereich dadurch vermieden werden soll, daß komplizierte Abdichtungsmaßnahmen in der Rotordüse vorgenommen werden, beispielsweise durch Verwendung einer Gummimembran. Dies führt zu einer ganz erheblich komplizierteren Konstruktion, bei der trotzdem die Gefahr von Beschädigungen besteht, wenn nämlich die komplizierten Abdichtungsmaßnahmen nicht in vollem Umfange funktionsfähig sind.From DE 90 04 452 Ul a rotor nozzle is known in which the stress in the bearing area is to be avoided by carrying out complicated sealing measures in the rotor nozzle, for example by using a rubber membrane. This leads to a considerably more complicated construction, in which there is still the risk of damage, namely if the complicated sealing measures are not fully functional.
Es ist Aufgabe der Erfindung, eine Rotordüse der gattungsgemäßen Art so auszugestalten, daß der Herstellungsaufwand verringert wird.It is an object of the invention to design a rotor nozzle of the generic type in such a way that the production outlay is reduced.
Diese Aufgabe wird bei einer Rotordüse der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, daß die Vertiefung konisch ausgebildet ist.This object is achieved according to the invention in a rotor nozzle of the type described in the introduction in that the depression is conical.
Es hat sich überraschenderweise herausgestellt, daß eine konische Ausgestaltung der Vertiefung in Zusammenwirkung mit der balligen Ausbildung des im Lager abgestützten Endes des Düsenkörpers zu einer optimalen Ab- dichtung führt, die auch beibehalten wird, wenn Schmutzteilchen und Chemikalien in den Dichtungsbereich gelangen. Die linienför ige Abstützung des ballenförmigen Endes mit der entsprechend verringerten Kontaktfläche führt zu einer wesentlich geringeren Verletzungsmöglichkeit dieser Kontaktflächen, und daher können mit einer solchen Konstruktion auch bei verschmutzter Reinigungsflüssigkeit dann hohe Standzeiten erreicht werden, wenn das Lager unmittelbar Teil des Gehäuses ist, also nicht aus einem speziellen Lagerkörper aus hochverschleißfestem Material besteht. Bei einer solchen Konstruktion ist es also weder notwendig, einen speziellen Lagerkörper aus hochwiderstandsfähigem Material zu verwenden, noch besteht die Notwendigkeit, den Lagerbereich gegenüber der zu fördernden Flüssigkeit in irgendeiner Weise zusätzlich abzudichten.It has surprisingly been found that a conical configuration of the recess in cooperation with the spherical design of the end of the nozzle body supported in the bearing results in an optimal leads to the seal, which is also retained when dirt particles and chemicals get into the seal area. The linienför support of the ball-shaped end with the correspondingly reduced contact area leads to a much lower possibility of injury to these contact areas, and therefore long service lives can be achieved with such a construction even if the cleaning fluid is dirty if the bearing is directly part of the housing, ie not a special bearing body made of highly wear-resistant material. With such a construction, it is therefore not necessary to use a special bearing body made of highly resistant material, nor is there any need to additionally seal the bearing area in any way with respect to the liquid to be conveyed.
Günstig ist es, wenn der Öffnungswinkel der Vertiefung zwischen 110° und 150°, insbesondere zwischen 120° und 140° liegt, vorzugsweise bei 130°.It is favorable if the opening angle of the depression is between 110 ° and 150 °, in particular between 120 ° and 140 °, preferably 130 °.
Das ballige Ende des Düsenkörpers kann kugelig geformt sein, wobei es dann günstig ist, wenn der Radius zwischen 3 mm und 7 mm liegt, vorzugsweise bei 5 mm.The spherical end of the nozzle body can be spherical, it being advantageous if the radius is between 3 mm and 7 mm, preferably 5 mm.
Bei einer besonders bevorzugten Ausführungsform ist vorgesehen, daß das Gehäuse aus Kunststoff besteht, insbesondere aus Polyamid, wobei es vorteilhaft ist, wenn das Polyamid einen Glasfaseranteil enthält, beispielsweise in der Größenordnung von 30% . Gemäß einer bevorzugten Ausführungsform ist vorgesehen, daß das Gehäuse einen Gehäusefuß, in den die Zufuhrleitung einmündet, und eine mit diesem verbindbare Gehäusehaube aufweist, in die der Auslaß mit der Vertiefung eingearbeitet ist. Es ist dadurch möglich, das Gehäuse in einfacher Weise zu trennen, die Gehäusehaube kann ausgetauscht werden, so daß bei Verschleißerscheinungen im Bereich des Lagers einfach eine neue Gehäusehaube auf den Gehäusefuß aufgesetzt wird. Gehäusefuß und Gehäusehaube können vorzugsweise durch Verschraubung miteinander verbindbar sein.In a particularly preferred embodiment it is provided that the housing consists of plastic, in particular polyamide, it being advantageous if the polyamide contains a glass fiber component, for example in the order of 30%. According to a preferred embodiment, it is provided that the housing has a housing foot, into which the feed line opens, and a housing hood which can be connected to the housing and into which the outlet with the recess is incorporated. This makes it possible to separate the housing in a simple manner, the housing cover can be replaced, so that if there are signs of wear in the area of the bearing, a new housing cover is simply placed on the housing base. The housing base and housing hood can preferably be connected to one another by screwing.
In an sich bekannter Weise kann vorgesehen sein, daß der Düsenkörper aus einem rohrförmigen Körper mit einer in diesen eingesetzten Düse besteht, die das ballige Ende des Düsenkörpers bildet.In a manner known per se it can be provided that the nozzle body consists of a tubular body with a nozzle inserted into it, which forms the spherical end of the nozzle body.
Bei einer bevorzugten Ausführungsfor ist jedoch vorgesehen, daß der Düsenkörper einen rohrförmigen Körper umfaßt, dessen eines Ende das ballige Ende des Düsenkörpers bildet. In diesem Falle ist also nicht das Einsetzen einer separaten Düse notwendig, sondern der Düsenkörper selbst bildet den Umlaufkörper mit Durchströmungskanal, die Düse und das ballige Ende zur Abstüt- zung in der Vertiefung aus.In a preferred embodiment, however, it is provided that the nozzle body comprises a tubular body, one end of which forms the spherical end of the nozzle body. In this case, it is not necessary to insert a separate nozzle, but the nozzle body itself forms the circulating body with the flow channel, the nozzle and the spherical end for support in the recess.
Auch hier ist es vorteilhaft, wenn der Düsenkörper zumindest im Bereich des balligen Endes aus Kunststoff besteht, insbesondere aus Polyetheretherketon.It is also advantageous here if the nozzle body consists of plastic, in particular of polyether ether ketone, at least in the region of the spherical end.
Die Materialpaarung glasfaserverstärktes Polyamid/Poly- etheretherketon ist dabei besonders verschleißarm, so daß mit einer Paarung derartiger Kunststoffe hohe Standzeiten erreicht werden, obwohl keine speziellen Lagerkörper vorgesehen sind. Insgesamt lassen sich dadurch die Herstellungskosten und der Herstellungsaufwand erheblich reduzieren, denn es genügt, Düsenkörper und Gehäusehauben aus Kunststoff in der üblichen Herstellungsweise herzustellen, diese Teile können dann ohne weitere Veränderungen in der Rotordüse eingesetzt werden.The material pairing of glass fiber reinforced polyamide / polyether ether ketone is particularly low-wear, so that a long service life can be achieved with a pairing of such plastics, although no special bearing bodies are provided. Overall, the manufacturing costs and the manufacturing outlay can be reduced considerably because it is sufficient to produce the nozzle body and housing hoods from plastic in the usual manner of production, these parts can then be used in the rotor nozzle without further changes.
Die nachfolgende Beschreibung bevorzugter Ausführungsformen der Erfindung dient im Zusammenhang mit der Zeichnung der näheren Erläuterung. Es zeigen:The following description of preferred embodiments of the invention serves in conjunction with the drawing for a more detailed explanation. Show it:
Figur 1 : eine Längsschnittansicht einer Rotordüse gemäß einem ersten bevorzugten Ausführungsbeispiel undFigure 1 is a longitudinal sectional view of a rotor nozzle according to a first preferred embodiment and
Figur 2: eine Ansicht ähnlich Figur 1 gemäß einem zweiten bevorzugten Ausführungsbeispiel .Figure 2 is a view similar to Figure 1 according to a second preferred embodiment.
Die in der Zeichnung dargestellte Rotordüse wird an das Ende einer Zufuhrleitung 1 angesetzt, um Reinigungsflüssigkeit, die über die Zufuhrleitung von einem Hochdruckreinigungsgerät herangeführt wird, unter hohem Druck in einem Kompaktstrahl abzugeben, der längs eines Kegelmantels umläuft.The rotor nozzle shown in the drawing is attached to the end of a supply line 1 in order to dispense cleaning liquid, which is supplied via the supply line from a high-pressure cleaning device, under high pressure in a compact jet which circulates along a cone jacket.
Die Zufuhrleitung 1 mündet in einen Gehäusefuß 2 ein, der im wesentlichen die Form eines Topfes mit einem Außengewinde 3 hat. Die Einmündung der Zufuhrleitung 1 erfolgt zentral, wobei die Zufuhrleitung 1 durch den Boden 4 des topfförmigen Gehäusefußes 2 hindurchtritt und bis etwa zur oberen Kante 5 des topfförmigen Gehäusefußes 2 verläuft. In diesem Bereich ist die Zufuhrleitung 1 stirnseitig verschlossen, jedoch führt eine Öffnung 6 aus der Zufuhrleitung 12 heraus, die so orientiert ist, daß die aus dieser Öffnung 6 austretende Flüssigkeit eine wesentliche Komponente hat, die in einer senkrecht auf der Zufuhrleitung 1 liegenden Ebene liegt und die bezüglich der Längsachse der Zufuhrleitung 1 in Umfangsrichtung verläuft.The feed line 1 opens into a housing foot 2, which essentially has the shape of a pot with an external thread 3. The confluence of the supply line 1 takes place centrally, the supply line 1 through the Bottom 4 of the cup-shaped housing base 2 passes through and extends approximately to the upper edge 5 of the cup-shaped housing base 2. In this area, the supply line 1 is closed at the end, but an opening 6 leads out of the supply line 12, which is oriented such that the liquid emerging from this opening 6 has an essential component which lies in a plane lying perpendicular to the supply line 1 and which runs in the circumferential direction with respect to the longitudinal axis of the feed line 1.
Auf das Außengewinde 3 des Gehäusefußes 2 ist eine Haube 7 aufgeschraubt, die zusammen mit dem Gehäusefuß 2 ein abgeschlossenes Gehäuse bildet. Diese Haube 7 weist auf der dem Gehäusefuß 2 gegenüberliegenden Seite eine sich konisch erweiternde Auslaßöffnung 8 auf, der in Richtung auf das Innere des Gehäuses eine konische Vertiefung 9 vorgelagert ist, die konzentrisch zur Auslaßöffnung 8 angeordnet ist und einen Öffnungswinkel von etwa 130° aufweist.A hood 7 is screwed onto the external thread 3 of the housing base 2 and forms a closed housing together with the housing base 2. This hood 7 has, on the side opposite the housing base 2, a conically widening outlet opening 8, which has a conical recess 9 in the direction of the interior of the housing, which is arranged concentrically to the outlet opening 8 and has an opening angle of approximately 130 °.
Diese Vertiefung 9 bildet ein pfannenförmiges Lager für das ballige Ende 10 eines im wesentlichen rohrförmigen Düsenkörpers 11, der einen in Längsrichtung durchgehenden Strömungskanal 12 aufweist. Dieser Strömungskanal 12 endet in einer Düsenöffnung 13, die zentral aus dem balligen Ende 10 austritt und mit der Auslaßöffnung 8 ausgerichtet ist.This recess 9 forms a pan-shaped bearing for the spherical end 10 of an essentially tubular nozzle body 11, which has a flow channel 12 which is continuous in the longitudinal direction. This flow channel 12 ends in a nozzle opening 13 which emerges centrally from the spherical end 10 and is aligned with the outlet opening 8.
Der rohrförmige Düsenkörper 11 trägt an seinem dem balligen Ende 10 gegenüberliegenden Ende außenseitig zwei in Umfangsrichtung verlaufende O-Ringe 14, 15, die sich an der Innenwand 16 der Haube 7 abstützen.The tubular nozzle body 11 carries two on the outside at its end opposite the crowned end 10 circumferential O-rings 14, 15, which are supported on the inner wall 16 of the hood 7.
Im Betrieb tritt durch die Öffnung 6 von der Zufuhrleitung 1 herangeführte Reinigungsflüssigkeit tangential in das Gehäuseinnere ein, so daß die Flüssigkeits enge im Inneren des Gehäuses, das durch die Haube 7 und den Gehäusefuß 2 gebildet wird, um die Längsachse des Gehäuses rotiert. Dabei nimmt diese rotierende Flüssigkeit den Düsenkörper 11 mit, der sich unter der Wirkung der Fliehkräfte mittels der O-Ringe 14 und 15 an die Innenwand 16 der Haube 7 anlegt, so daß die Längsachse des Düsenkörpers 11 auf einem Kegel umläuft, dessen Spitze durch den tiefsten Punkt der Vertiefung 9 gebildet wird und dessen Längsachse mit der Längsachse des Gehäuses zusammenfällt. Die Flüssigkeit tritt durch den Strömungskanal 12 des Düsenkörpers 11 hindurch und verläßt die Düsenöffnung 13 in Richtung der Längsachse de Düsenkörpers 11, also ebenfalls auf einem Kegelmantel umlaufend, der sich von der Auslaßöffnung 8 ausgehend nach außen hin öffnet.In operation occurs through the opening 6 from the supply line 1 cleaning liquid tangentially into the housing interior, so that the liquid tight inside the housing, which is formed by the hood 7 and the housing base 2, rotates about the longitudinal axis of the housing. This rotating liquid takes the nozzle body 11 with it, which under the action of centrifugal forces by means of the O-rings 14 and 15 bears against the inner wall 16 of the hood 7, so that the longitudinal axis of the nozzle body 11 rotates on a cone, the tip of which passes through the lowest point of the recess 9 is formed and its longitudinal axis coincides with the longitudinal axis of the housing. The liquid passes through the flow channel 12 of the nozzle body 11 and leaves the nozzle opening 13 in the direction of the longitudinal axis of the nozzle body 11, that is to say also revolving on a conical jacket which opens outwards from the outlet opening 8.
Der Düsenkörper 11 besteht insgesamt aus Kunststoff, vorzugsweise aus Polyetheretherketon, auch das Gehäuse ist vorzugsweise aus Kunststoff hergestellt, beispielsweise aus Polyamid mit einem Glasfaseranteil von 30 %.The nozzle body 11 is made entirely of plastic, preferably of polyether ether ketone, and the housing is also preferably made of plastic, for example of polyamide with a glass fiber content of 30%.
Der besonders beanspruchte Lagerbereich zwischen dem balligen Ende 10 und der Vertiefung 9 in der Innenwand der Haube 7 zeigt bei einer solchen Konstruktion erstaunlich geringen Verschleiß, so daß mit einer solchen Rotordüse hohe Standzeiten zu erreichen sind. Die Teile sind jedoch in einfachster Weise herzustellen, da die Haube 7 als einstückiges Formteil ausgebildet ist, und dasselbe gilt im wesentlichen auch für den Düsenkörper 11. Diese Teile können auch in einfachster Weise ausgetauscht werden, indem die Haube 7 vom Gehäusefuß 2 abgeschraubt und durch eine neue ersetzt wird. Bei dieser Gelegenheit kann auch der Düsenkörper 11 in einfacher Weise ausgetauscht werden, falls der Verschleiß ein bestimmtes Maß übersteigen sollte.The particularly stressed bearing area between the spherical end 10 and the recess 9 in the inner wall of the hood 7 shows surprisingly little wear with such a construction, so that long service lives can be achieved with such a rotor nozzle. The parts However, they can be produced in the simplest way, since the hood 7 is designed as a one-piece molded part, and the same applies essentially to the nozzle body 11. These parts can also be exchanged in the simplest manner by unscrewing the hood 7 from the housing base 2 and replacing it with a new one is replaced. On this occasion, the nozzle body 11 can also be replaced in a simple manner if the wear should exceed a certain level.
Bei dem Ausführungsbeispiel der Figur 2 ist ein ähnlicher Aufbau gewählt, entsprechende Teile tragen daher dieselben Bezugszeichen.In the exemplary embodiment in FIG. 2, a similar structure is chosen, corresponding parts therefore have the same reference symbols.
Im Unterschied zum Ausführungsbeispiel der Figur 1 ist der Gehäusefuß 2 hier nach oben offen ausgebildet, die Zufuhrleitung 1 mündet direkt in den Innenraum des Gehäusefußes 2. Zur Haube 7 hin ist der Gehäusefuß 2 durch einen Deckel 17 über eine Dichtung 18 abgeschlossen, auch hier wird die Flüssigkeit über eine in dieser Zeichnung nicht dargestellte Öffnung tangential in den von der Haube 7 umschlossenen Bereich eingeleitet.In contrast to the exemplary embodiment in FIG. 1, the housing base 2 is here open at the top, the feed line 1 opens directly into the interior of the housing base 2. Towards the hood 7, the housing base 2 is closed by a cover 17 via a seal 18, here too the liquid is introduced tangentially through an opening, not shown in this drawing, into the area enclosed by the hood 7.
Der Düsenkörper 11 ist im dargestellten Ausführungsbeispiel der Figur 2 mehrteilig ausgebildet, in das vordere Ende des im wesentlichen rohrförmigen Düsenkörpers 11 ist nämlich eine spezielle Düse 19 eingesetzt, deren aus dem Düsenkörper 11 hervorstehendes Ende das ballige Ende 10 des Düsenkörpers 11 bildet. Auch dieser Düsenkörper 11 besteht aus Kunststoff, ebenso die eingesetzte Düse 19, die beispielsweise aus Polyetheretherketon hergestellt werden kann. Im übrigen ist die Rotordüse gleich aufgebaut und arbeitet auch in gleicher Weise wie die der Figur 1. Selbstverständlich können die Ausgestaltungen der beiden unterschiedlichen Gehäusefüße auch ausgetauscht werden, es ist zum Beispiel ohne weiteres möglich, einen Düsenkörper 11 mit eingesetzter Düse 19 auch im Ausführungsbeispiel der Figur 1 zu verwenden und umgekehrt . In the exemplary embodiment shown in FIG. 2, the nozzle body 11 is formed in several parts, namely that a special nozzle 19 is inserted into the front end of the essentially tubular nozzle body 11, the end of which protrudes from the nozzle body 11 forms the spherical end 10 of the nozzle body 11. This nozzle body 11 is also made of plastic, as is the nozzle 19 used, which can be produced, for example, from polyether ether ketone. Otherwise, the rotor nozzle is constructed in the same way and also works in the same way as that of FIG. 1. Of course, the configurations of the two different housing feet can also be exchanged. For example, it is easily possible to use a nozzle body 11 with an inserted nozzle 19 in the exemplary embodiment of FIG Figure 1 to use and vice versa.

Claims

P A T E N T A N S P R Ü C H EP A T E N T A N S P R Ü C H E
Rotordüse für ein Hochdruckreinigungsgerät mit einem Gehäuse, in das eine Zufuhrleitung für Reinigungsflüssigkeit einmündet, mit einem Auslaß für die Reinigungsflüssigkeit, mit einem von der Reinigungsflüssigkeit durchströmten, im Gehäuse angeordneten Düsenkörper, der sich mit einem balligen Ende in einem pfannenförmigen, den Auslaß des Gehäuses umgebenden Lager abstützt und der durch den Strom der Reinigungsflüssigkeit durch das Gehäuse in eine Umlaufbewegung versetzt wird, bei der die Längsachse des Düsenkörpers auf einem Kegelmantel umläuft, wobei das den Düsenkörper abstützende Lager durch eine in die Innenwand des Gehäuses eingearbeitete, konzentrisch zum Auslaß angeordnete Vertiefung gebildet wird, dadurch gekennzeichnet, daß die Vertiefung (9) konisch geformt ist.Rotor nozzle for a high-pressure cleaning device with a housing, into which a supply line for cleaning fluid opens, with an outlet for the cleaning fluid, with a flow of the cleaning fluid, arranged in the housing body, which has a convex end in a pan-shaped, surrounding the outlet of the housing Bearing supported and which is caused by the flow of cleaning fluid through the housing in a circular movement, in which the longitudinal axis of the nozzle body rotates on a conical jacket, wherein the bearing supporting the nozzle body is formed by a recess machined into the inner wall of the housing, arranged concentrically to the outlet is characterized in that the recess (9) is conical.
Rotordüse nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der Öffnungswinkel der Vertiefung (9) zwischen 110° und 150°, insbesondere zwischen 120° und 140° liegt.Rotor nozzle according to one of the preceding claims, characterized in that the opening angle of the recess (9) is between 110 ° and 150 °, in particular between 120 ° and 140 °.
Rotordüse nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß das ballige Ende (10) kugelig geformt ist. Rotor nozzle according to one of the preceding claims, characterized in that the spherical end (10) is spherical.
4. Rotordüse nach Anspruch 3, dadurch gekennzeichnet, daß der Radius des balligen Endes (10) zwischen 3 mm und 7 mm liegt.4. Rotor nozzle according to claim 3, characterized in that the radius of the crowned end (10) is between 3 mm and 7 mm.
5. Rotordüse nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß das Gehäuse (7, 2) aus Kunststoff besteht.5. Rotor nozzle according to one of the preceding claims, characterized in that the housing (7, 2) consists of plastic.
Rotordüse nach Anspruch 5, dadurch gekennzeichnet, daß das Gehäuse (7, 2) aus Polyamid besteht.Rotor nozzle according to claim 5, characterized in that the housing (7, 2) consists of polyamide.
Rotordüse nach Anspruch 6, dadurch gekennzeichnet, daß das Polyamid einen Glasfaseranteil enthält.Rotor nozzle according to claim 6, characterized in that the polyamide contains a glass fiber portion.
8. Rotordüse nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß das Gehäuse einen Gehäusefuß (2), in den eine Zufuhrleitung (1) einmündet, und eine mit diesem verbindbare Gehäusehaube (7) aufweist, in die der Auslaß (8) mit der Vertiefung (9) eingearbeitet ist.8. Rotor nozzle according to one of the preceding claims, characterized in that the housing has a housing foot (2) into which a supply line (1) opens, and a housing hood (7) which can be connected to the housing cover and into which the outlet (8) connects to the housing Recess (9) is incorporated.
Rotordüse nach Anspruch 8, dadurch gekennzeichnet, daß Gehäusefuß ( 2 ) und Gehäusehaube ( 7 ) durch Ver- schraubung miteinander verbindbar sind. Rotor nozzle according to claim 8, characterized in that the housing base (2) and housing cover (7) can be connected to one another by screwing.
10. Rotordüse nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der Düsenkörper (11) aus einem rohrförmigen Körper mit einer in diesen eingesetzten Düse (19) besteht, die das ballige Ende (10) des Düsenkörpers (11) bildet.10. Rotor nozzle according to one of the preceding claims, characterized in that the nozzle body (11) consists of a tubular body with a nozzle inserted in this (19), which forms the spherical end (10) of the nozzle body (11).
11. Rotordüse nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Düsenkörper (1) einen rohrförmigen Körper umfaßt, dessen eines Ende das ballige Ende (10) des Düsenkörpers (11) bildet.11. Rotor nozzle according to one of claims 1 to 9, characterized in that the nozzle body (1) comprises a tubular body, one end of which forms the spherical end (10) of the nozzle body (11).
12. Rotordüse nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der Düsenkörper (11) zumindest im Bereich des balligen Endes (10) aus Kunststoff besteht.12. Rotor nozzle according to one of the preceding claims, characterized in that the nozzle body (11) consists of plastic at least in the region of the crowned end (10).
13. Rotordüse nach Anspruch 12, dadurch gekennzeichnet, daß der Düsenkörper (11) zumindest im Bereich des balligen Endes (10) aus Polyetheretherketon besteht. 13. Rotor nozzle according to claim 12, characterized in that the nozzle body (11) at least in the region of the crowned end (10) consists of polyether ether ketone.
EP97936691A 1996-08-10 1997-08-07 Rotary nozzle for a high-pressure cleaning apparatus Expired - Lifetime EP0915739B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19632323 1996-08-10
DE19632323A DE19632323A1 (en) 1996-08-10 1996-08-10 Rotor nozzle for a high pressure cleaning device
PCT/EP1997/004312 WO1998006501A1 (en) 1996-08-10 1997-08-07 Rotary nozzle for a high-pressure cleaning apparatus

Publications (2)

Publication Number Publication Date
EP0915739A1 true EP0915739A1 (en) 1999-05-19
EP0915739B1 EP0915739B1 (en) 2003-04-09

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ID=7802322

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EP97936691A Expired - Lifetime EP0915739B1 (en) 1996-08-10 1997-08-07 Rotary nozzle for a high-pressure cleaning apparatus

Country Status (7)

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US (1) US6029906A (en)
EP (1) EP0915739B1 (en)
AT (1) ATE236726T1 (en)
CA (1) CA2262733C (en)
DE (2) DE19632323A1 (en)
DK (1) DK0915739T3 (en)
WO (1) WO1998006501A1 (en)

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WO2011080603A2 (en) 2009-12-28 2011-07-07 Koninklijke Philips Electronics N.V. Biofeedback for program guidance in pulmonary rehabilitation
WO2011080602A2 (en) 2009-12-28 2011-07-07 Koninklijke Philips Electronics N.V. Early exacerbation detection using differential temperature monitoring

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FR2858778B1 (en) * 2003-08-14 2006-02-10 Entpr De Nettoyage Et De Desin ROTATING JET NOZZLE
FR2858779B1 (en) * 2003-08-14 2006-11-17 Entpr De Nettoyage Et De Desin DEVICE FOR WASHING PRESSURIZED FLUID JET PARTS, PREFERABLY UNDER MEDIUM PRESSURE
US7273188B2 (en) * 2003-08-15 2007-09-25 Darrell R Saha Internal self-rotating fluid jetting nozzle
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US8500042B2 (en) * 2008-01-24 2013-08-06 Hydra-Flex Inc. Configurable rotary spray nozzle
DE102009023647A1 (en) 2009-05-25 2010-12-02 Alfred Kärcher Gmbh & Co. Kg Rotor nozzle for a high-pressure cleaning device
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EP2882538B1 (en) 2012-08-07 2018-12-05 Alfred Kärcher SE & Co. KG Rotor nozzle for a high-pressure cleaning device
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WO2011080603A2 (en) 2009-12-28 2011-07-07 Koninklijke Philips Electronics N.V. Biofeedback for program guidance in pulmonary rehabilitation
WO2011080602A2 (en) 2009-12-28 2011-07-07 Koninklijke Philips Electronics N.V. Early exacerbation detection using differential temperature monitoring

Also Published As

Publication number Publication date
DE59709796D1 (en) 2003-05-15
ATE236726T1 (en) 2003-04-15
DK0915739T3 (en) 2003-04-28
CA2262733C (en) 2004-04-13
EP0915739B1 (en) 2003-04-09
WO1998006501A1 (en) 1998-02-19
CA2262733A1 (en) 1998-02-19
US6029906A (en) 2000-02-29
DE19632323A1 (en) 1998-02-12

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