EP0638366B1 - Tube à jet pour dispositif de nettoyage à haute pression - Google Patents

Tube à jet pour dispositif de nettoyage à haute pression Download PDF

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Publication number
EP0638366B1
EP0638366B1 EP94110486A EP94110486A EP0638366B1 EP 0638366 B1 EP0638366 B1 EP 0638366B1 EP 94110486 A EP94110486 A EP 94110486A EP 94110486 A EP94110486 A EP 94110486A EP 0638366 B1 EP0638366 B1 EP 0638366B1
Authority
EP
European Patent Office
Prior art keywords
pipe
jet pipe
supply line
jet
members
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.)
Expired - Lifetime
Application number
EP94110486A
Other languages
German (de)
English (en)
Other versions
EP0638366A1 (fr
Inventor
Gerhard Dipl.-Ing. Dellert
Klaus Dipl.-Ing. Frech
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 EP0638366A1 publication Critical patent/EP0638366A1/fr
Application granted granted Critical
Publication of EP0638366B1 publication Critical patent/EP0638366B1/fr
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
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/16—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets
    • B05B1/1627—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a gate valve, a sliding valve or a cock

Definitions

  • the invention relates to a jet pipe for a high-pressure cleaning device with two concentrically arranged pipe sections, each leading to its own outlet opening, and with a switching device which connects a supply line for liquid cleaning medium either only to the inner pipe section or to both pipe sections.
  • Such a jet pipe is known, for example, from German patent DE-C-31 24 125. With such an arrangement, it is possible to selectively emit a compact point jet or a fanned-out jet via the same jet pipe, only the inner tube piece with liquid being used to generate a point jet is loaded, on the other hand, both the inner and the outer tube piece for producing the fanned-out jet.
  • a very complex construction which requires valve bodies and bulky actuating devices, is necessary, in particular a special valve block must be inserted into the jet pipe.
  • a switchover nozzle is known from EP 0 501 164 A1, in which a nozzle part can be displaced in the axial direction, so that a central nozzle opening or this central nozzle opening and surrounding nozzle bores are optionally connected to a supply line.
  • This switching nozzle is located at the end of a jet pipe and can therefore only be switched over by the operator reaching into the outlet area of the liquid. This is inconvenient and can also be dangerous if you want to switch while dispensing liquid.
  • the inner pipe section and the feed line are designed to be telescopic and that circumferential openings of the pipe sections cover in the approximate position, but are released in the extended position. As a result, the inner pipe section and the supply line lead to each other.
  • the supply line is formed at its end by a plastic sleeve into which the jet pipe can be inserted at different depths by the switching device.
  • This plastic sleeve can in particular carry axially parallel arms at its free end, which surround and guide the inner tube piece in all positions of the feed line relative to the concentric tubes.
  • the free space between the arms serves as a flow opening when the two tubes are pulled apart so far that the inner tube section reaches the area of the axially parallel arms.
  • the plastic sleeve is designed as an insert which is inserted into the end of a conduit.
  • this has the advantage that a particularly wear-resistant material can be used in this area, and on the other hand, the design of the plastic sleeve as an insert enables this insert to be adjusted and thus an adjustment of the sealing seat in relation to the displacement of the switching device.
  • the outer pipe section is preferably sealed in the feed line so that it can be moved telescopically, so that the inner and outer pipe sections can be designed to be immovable relative to one another.
  • the switching device comprises a housing which surrounds the connection point between the supply line and the two concentric pipe sections and rotates about the longitudinal axis of the jet pipe and which, in the event of rotation, displaces the supply line and the two concentric pipe sections against one another in the axial direction via cam tracks and co-operating with them .
  • a housing which surrounds the connection point between the supply line and the two concentric pipe sections and rotates about the longitudinal axis of the jet pipe and which, in the event of rotation, displaces the supply line and the two concentric pipe sections against one another in the axial direction via cam tracks and co-operating with them .
  • the housing consists of two half shells.
  • the outlet openings of the two pipe pieces can be arranged axially one behind the other.
  • This also enables a space-saving construction compared to the prior art, in which the inner pipe section and the outer pipe section are connected in a spray head via lines with different spray nozzles, because with such a construction the jet pipe maintains its continuously small outer diameter even in the outlet area.
  • the compact point jet is emitted from the inner pipe section and occurs after the Exit from a point jet nozzle connected to the inner tube piece then also through the outlet opening of the outer tube piece, which is larger in circumference than the outlet opening of the inner tube piece and therefore does not obstruct the point jet.
  • the fanned-out jet which is emitted when the outer tube section is open, is composed of a compact jet and a fanned-out jet. Part of the liquid is directed through the inner pipe section and part through the outer pipe section, the proportion of compact jets is lower than in the case of the closed outer pipe section.
  • the outer tube piece is made of plastic and the inner piece of metal.
  • the outer and inner tube piece are designed as a one-piece extruded profile, which can consist, for example, entirely of plastic or entirely of metal. The two pipe sections are then connected to one another by longitudinal webs, the annular space between the inner and the outer pipe section is thereby divided into individual sections with an arcuate cross section.
  • the jet pipe 1 of a high-pressure cleaning device shown in the drawing is connected via a switching device 2 to a tubular feed line 3, the jet pipe 1 and feed line 3 being arranged coaxially one behind the other and thus giving the impression of a continuous spray lance.
  • This is connected via a bayonet connection 4, for example, to the handle of a high-pressure cleaning device, in which there is a closing valve, which can optionally also be designed as a metering valve.
  • the hand spray gun is known per se and is therefore not shown in the drawing.
  • the jet pipe 1 carries two outlet openings through which pressurized cleaning liquid conveyed by a high-pressure cleaning device can be sprayed, for example in the form of a compact point jet and in the form of a fanned-out jet.
  • the switch device 2 can be used to select the form in which the beam is emitted.
  • the jet pipe 1 comprises an outer pipe section 5 made of plastic and an inner pipe section 6 made of metal arranged concentrically to the inside of the same. This is determined by radial webs, not shown in the drawing, in the outer tube piece. A continuous annular space 7 is thus formed between the inner pipe section 6 and the outer pipe section 5.
  • a hood 8 is placed which covers the end of the outer pipe section 5 and closes the end of the outer pipe section 5 and has a slot-shaped outlet opening 9 in its end face.
  • a nozzle body 10 is sealed onto the inner pipe section 6 and closes the end of the inner pipe section 6 and in turn has an outlet opening 11 on the end face.
  • This outlet opening 11 is designed as a step-like narrowing nozzle channel with a circular cross section and is used, for example, to form a compact point jet.
  • the outlet openings 9 and 11 are arranged coaxially one behind the other at a short distance, so that a compact jet leaving the outlet opening 11 successively passes through the outlet opening 11 and then the outlet opening 9, while liquid emerges from the annular space 7 exclusively through the outlet opening 9, the flow conditions below can also be influenced by the nozzle body 10, which extends right up to the outlet opening 9.
  • the interior 12 of the tubular feed line 3 widens step-wise at its end facing the jet pipe 1.
  • An insert in the form of a plastic sleeve 14 is screwed into a slightly enlarged area 13 of the interior 12 and is sealed off from the inner wall of the interior 12 by means of a peripheral seal 15.
  • the plastic sleeve 14 has at its end facing the jet pipe 1 a plurality of axially extending arms 16 which leave slot-shaped spaces 17 between them. These arms 16 protrude into a further enlarged area 18 of the interior 12, into which the jet pipe 1 is immersed.
  • a circumferential seal 19 on the outer wall of the outer pipe section 5 the jet pipe 1 is sealed off from the inner wall of the area 18, so that the jet pipe 1 can be moved telescopically in the longitudinal direction in the area 18 of the interior 12.
  • the jet pipe 1 and the feed line 3 are surrounded in the connection area described by a sleeve-shaped housing 22, which is formed from two half-shells formed in mirror image to one another, for example by screwing them together.
  • Each half-shell has on its inside a circumferential groove 23 into which an annular shoulder 24 of the jet pipe 1 protrudes outwards.
  • the housing is freely rotatable and axially immovable on the jet pipe.
  • both half-shells of the housing 22 each have a curved path 25 in the region of the feed line 3, which is slightly inclined relative to a plane perpendicular to the longitudinal axis of the jet pipe.
  • a driver 26 is immersed on the outer jacket of the feed line 3, so that when the housing 22 is rotated on the jet pipe 1, the feed line 3 is displaced in the axial direction relative to the jet pipe 1.
  • the spreading apart of the jet pipe 1 and the feed line 3 is limited by an inward-facing stop 27 of the housing when an outwardly directed step 28 of the feed line 3 bears against the stop 27 (FIG. 3).
  • the flow can be switched either only through the inner pipe section or through both pipe sections simultaneously, and in a simple manner by rotating the housing 22 over a small angular range, in the exemplary embodiment shown over an angular range of less than 180 °.
  • This arrangement is light in weight and is very easy for the operator to operate.

Landscapes

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

Claims (11)

  1. Tube à jet pour un appareil de nettoyage à haute pression, comportant deux éléments tubulaires (5, 6) disposés concentriquement l'un à l'autre et conduisant chacun à une ouverture de sortie propre (9, 11), ainsi qu'un dispositif de commutation qui, au choix, relie une conduite d'amenée (3) pour le fluide de nettoyage liquide soit uniquement avec l'élément tubulaire intérieur (6), soit avec les deux éléments tubulaires (5, 6),
       caractérisé par le fait que le dispositif de commutation (2) décale le tube à jet (1) et la conduite d'amenée (3) relativement l'un à l'autre selon la direction axiale, entre deux positions, la conduite d'amenée (3), dans la position rapprochée, se raccordant, de façon étanche, à l'élément tubulaire intérieur (6) du tube à jet (1), tandis que, dans la position éloignée l'un de l'autre, elle libère, entre elle et l'élément tubulaire intérieur (6), une ouverture (17) conduisant dans l'élément tubulaire extérieur (5) du tube à jet (1).
  2. Tube à jet selon la revendication 1, caractérisé par le fait que l'élément tubulaire intérieur (6) et la conduite d'amenée (3) sont conçus télescopiques et que des ouvertures périphériques (17) des éléments tubulaires sont recouvertes dans la position rapprochée et par contre libérées dans la position éloignée l'un de l'autre.
  3. Tube à jet selon la revendication 2, caractérisé par le fait que la conduite d'amenée (3) est formée, à son extrémité, par une douille plastique (14) dans laquelle le tube à jet peut s'enfoncer plus ou moins profondément sous l'action du dispositif de commutation (2).
  4. Tube à jet selon la revendication 3, caractérisé par le fait qu'à son extrémité libre, la douille plastique (14) porte des bras (16) parallèles à l'axe, qui, dans toutes les positions de la conduite d'amenée (3) par rapport aux éléments tubulaires concentriques, entourent et guident l'élément tubulaire intérieur (6).
  5. Tube à jet selon la revendication 3 ou 4, caractérisé par le fait que la douille plastique (14) est conçue sous forme d'une garniture insérée qui s'insère dans l'extrémité d'un conduit de la conduite d'amenée (3).
  6. Tube à jet selon l'une des revendications précédentes, caractérisé par le fait que l'élément tubulaire extérieur (5) peut coulisser télescopiquement et de façon étanche dans la conduite d'amenée (3).
  7. Tube à jet selon l'une des revendications précédentes, caractérisé par le fait que le dispositif de commutation (2) comporte un manchon (22) qui entoure la position de liaison entre conduite d'amenée (3) et les deux éléments tubulaires concentriques (5, 6), qui peut tourner autour de l'axe longitudinal du tube à jet (1) et qui, au moyen de chemins courbes (25) et d'entraîneurs (26) collaborant avec ceux-ci, si on le fait tourner, fait coulisser la conduite d'amenée (3) et les deux éléments tubulaires concentriques (5, 6) l'un par rapport à l'autre selon la direction axiale.
  8. Tube à jet selon la revendication 7, caractérisé par le fait que le manchon (22) est constitué de deux demi-coquilles.
  9. Tube à jet selon l'une des revendications précédentes, caractérisé par le fait que les ouvertures de sortie (9, 11) des deux éléments tubulaires (5 et 6) sont disposées axialement l'une derrière l'autre.
  10. Tube à jet selon l'une des revendications précédentes, caractérisé par le fait que l'élément tubulaire extérieur (5) est constitué de plastique et l'élément tubulaire antérieur (6), de métal.
  11. Tube à jet selon l'une des revendications 1 à 9, caractérisé par le fait que l'élément tubulaire extérieur (5) et l'élément tubulaire intérieur (6) sont conçus sous forme d'un profilé extrudé d'une seule pièce.
EP94110486A 1993-08-12 1994-07-06 Tube à jet pour dispositif de nettoyage à haute pression Expired - Lifetime EP0638366B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4327155A DE4327155C1 (de) 1993-08-12 1993-08-12 Strahlrohr fuer ein Hochdruckreinigungsgeraet
DE4327155 1993-08-12

Publications (2)

Publication Number Publication Date
EP0638366A1 EP0638366A1 (fr) 1995-02-15
EP0638366B1 true EP0638366B1 (fr) 1997-04-09

Family

ID=6495064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94110486A Expired - Lifetime EP0638366B1 (fr) 1993-08-12 1994-07-06 Tube à jet pour dispositif de nettoyage à haute pression

Country Status (4)

Country Link
EP (1) EP0638366B1 (fr)
AT (1) ATE151312T1 (fr)
DE (2) DE4327155C1 (fr)
DK (1) DK0638366T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10946401B2 (en) 2016-07-20 2021-03-16 Aptar Radolfzell Gmbh Liquid dispenser with a discharge head

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK171930B1 (da) * 1996-02-13 1997-08-18 Scanio Flow Equip Rengøringsanlæg
EP1254719A1 (fr) * 2001-05-03 2002-11-06 Nilfisk-Advance A/S Dispositif de décharge pour un appareil de nettoyage haute pression
DE10257783B3 (de) * 2002-12-11 2004-03-18 Alfred Kärcher Gmbh & Co. Kg Düsenanordnung für ein Hochdruckreinigungsgerät
JP4398469B2 (ja) 2004-09-13 2010-01-13 ワッシュテック ホールディング ゲーエムベーハー 洗浄機
US8640973B2 (en) * 2006-09-07 2014-02-04 Briggs And Stratton Corporation Pressure washer wand having a nozzle selector
HUE041634T2 (hu) * 2014-10-02 2019-05-28 Kaercher Alfred Se & Co Kg Szelepelrendezés folyadékok számára
DE102019120367A1 (de) * 2019-07-29 2021-02-04 Alfred Kärcher SE & Co. KG Umschaltbare Düsenanordnung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3124125C3 (de) * 1981-06-19 1994-08-04 Wap Reinigungssysteme Hochdrucksprühpistole mit zwei getrennten Sprühdüsen
US4785998A (en) * 1986-06-09 1988-11-22 Toshio Takagi Water spraying nozzle
DE9011751U1 (fr) * 1990-08-13 1990-10-18 Baber, Reinhard, 6934 Neckargerach, De
IT1245146B (it) * 1991-02-11 1994-09-13 Faip Off Mecc Ugello perfezionato per macchine idropulitrici ad alta pressione e simili con bocche di erogazione allineate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10946401B2 (en) 2016-07-20 2021-03-16 Aptar Radolfzell Gmbh Liquid dispenser with a discharge head

Also Published As

Publication number Publication date
ATE151312T1 (de) 1997-04-15
DE59402354D1 (de) 1997-05-15
DE4327155C1 (de) 1994-10-06
EP0638366A1 (fr) 1995-02-15
DK0638366T3 (da) 1997-08-04

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