EP0762941B1 - Ajutage rotatif pour appareils de nettoyage a haute pression - Google Patents

Ajutage rotatif pour appareils de nettoyage a haute pression Download PDF

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Publication number
EP0762941B1
EP0762941B1 EP94918819A EP94918819A EP0762941B1 EP 0762941 B1 EP0762941 B1 EP 0762941B1 EP 94918819 A EP94918819 A EP 94918819A EP 94918819 A EP94918819 A EP 94918819A EP 0762941 B1 EP0762941 B1 EP 0762941B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
nozzle body
bore
longitudinal axis
rotor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94918819A
Other languages
German (de)
English (en)
Other versions
EP0762941A1 (fr
Inventor
Rolf Friedrich
Wolfgang Holzwarth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Priority to AT94918819T priority Critical patent/ATE169845T1/de
Publication of EP0762941A1 publication Critical patent/EP0762941A1/fr
Application granted granted Critical
Publication of EP0762941B1 publication Critical patent/EP0762941B1/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
    • 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 that is in an end wall with a pan-shaped, centrally perforated depression is provided with a through hole having nozzle body, which is formed with a spherical Supports the end in the pan-shaped recess, extending longitudinally over part of the housing extends and has an outer diameter that is smaller is called the inside diameter of the case, and with a in one direction opening into the housing for the liquid through which the liquid in the housing is around the longitudinal axis is rotatable so that the Nozzle body rotates together with the rotating liquid and in doing so with a contact surface on its circumference bears against the inner wall of the housing, the Longitudinal axis of the nozzle body with respect to the longitudinal axis of the Housing is inclined being in the upstream portion of the through hole a rectifier with axially parallel and diametrical arranged in the through hole Walls is used.
  • Such a rotor nozzle is from DE-A-4 133 973 known.
  • Another rotor nozzle is from, for example DE-A-40 13 446 known. It has proven to be very effective Cleaning nozzle proved that with this nozzle one on one Conical shell encircling compact beam can be generated with which a larger area can be reached, while maintaining the properties of the compact beam stay.
  • the length of the Through hole in the nozzle body is at least 70 mm, that the ratio of the length of the through hole for their diameter the value 17 or a larger value has and that the length of the rectifier is at least 0.25 the length of the through hole.
  • the diameter of the through hole with the exception of the outlet area is the same, if none in the through hole Steps or narrowing occur. It goes without saying in the outlet area, the through hole in the outlet opening an outlet nozzle, and this outlet opening usually has a much smaller diameter than the through hole. Again, it is beneficial if the transition from the through hole into the outlet opening the nozzle takes place continuously, as is known per se.
  • the thickness of the walls of the rectifier maximum 1/40 of the total length of the rectifier is. This is a very small wall thickness that goes with it leads the flow through the through hole the walls are minimally disturbed. This also promotes Uniformity of the flow through the through hole considerably.
  • the rectifier is made of metal exists because of the higher strength values of Metal compared to plastic worked with smaller wall thicknesses can be done without damaging the rectifier and thus a change in the rectifier geometry to fear.
  • the width of the walls of the rectifier over the most of its length is the inside diameter of the through hole corresponds to the walls at the upstream slightly widened end of the rectifier are and that the widened parts of the walls into one Penetrate insert made of deformable material upstream end of the through hole Forms inner wall.
  • the rotor nozzle is provided that at the downstream end of the through hole a nozzle insert is arranged with an outlet opening is the outlet direction with respect to the longitudinal axis of the nozzle body is inclined.
  • the inclination of the outlet opening small compared to the longitudinal axis of the nozzle body is, for example, on the order of 0.5 ° to 10 °, preferably from 1 ° to 5 ° and very preferably in the range between 2 ° and 3.5 °.
  • a relatively small one is therefore sufficient Inclination of the outlet opening with respect to the axis of rotation of the nozzle body to achieve the desired effect.
  • the nozzle body receives a nozzle insert in which one opposite the longitudinal axis of the axially parallel in the nozzle body fitted nozzle insert inclined outlet opening is.
  • the nozzle body has a nozzle insert with an axially parallel accommodates outlet opening arranged in the nozzle insert and that the nozzle insert in the nozzle body with its own Axis is arranged inclined relative to the longitudinal axis.
  • either the nozzle insert is used even with one versus your own Longitudinal axis of the nozzle insert inclined outlet opening or a conventional nozzle insert with axially parallel The outlet opening is inserted at an angle into the nozzle body.
  • the rotor nozzle shown in the drawing includes one central screw connection 1, one in the drawing high-pressure line, not shown, are screwed in can, due to the cleaning liquid under high pressure is fed.
  • the screw connection 1 opens into a central one Blind hole 2, which is essentially transverse to Longitudinal direction of the blind hole 2 extending tangential Bores 3 with the interior 4 of a housing 5 of the Rotor nozzle is connected.
  • This housing 5 is formed through a hood-shaped housing cap 6, which on an external thread 7 of the screw connection 1 and the bottom hole 8 receiving the blind hole 2 is screwed on. Housing cap 6 and bottom part 8 are through an interposed ring seal 9 to the outside sealed.
  • the bottom part 8 has a central to Interior 4 directed projection 10, the between himself and the inner wall of the interior 4 the blind hole 2 coaxial surrounding annular space 11 forms, in which open the holes 3 such that the from the Bores 3 in the annular space 11 entering liquid Annulus 11 is accelerated in the circumferential direction. This results in the laterally offset arrangement of the Bores 3 through which a tangential to the circumferential direction running component is introduced into the flow.
  • the side wall 12 delimiting the annular space 11 on the inside the projection 10 has an annular shoulder-shaped shoulder 13 on which the side wall 12 towards the Interior 4 springs back in the radial direction.
  • the interior 4 is in the adjoining the bottom part 8 Area is cylindrical and goes then into a conically narrowing section 14, which is finally closed by an end wall 15. There is a central opening in this end wall 15 16, which extends to the interior 4 stepwise.
  • a bearing body 18 is used, for example made of ceramic can exist and by means of an annular seal 19 opposite the housing cap 6 is sealed.
  • this annular bearing body 18, which is concentric is arranged to the opening 16, in the form of a spherical shaped pan in which the spherical head 20 of a component referred to as nozzle body 21 is inserted.
  • This nozzle body 21 essentially comprises a tube 22, with constant outer and inner diameter, in the nozzle insert at the end of the bearing body 23 is used, for example also from Ceramics can exist.
  • This nozzle insert 23 is on its outer end protruding from the tube 22 is spherical shaped and thus forms the head 20. In this nozzle insert 23 there is an outlet opening 24, the Diameter is much smaller than the inside diameter of the tube 22.
  • the end of the tube 22 facing away from the bearing body 18 is immersed into the annular space 11 and holds one of the paragraph 13 small distance that is so slight that the nozzle body 21 in the housing in the axial direction only by one small path can be moved and therefore not with his head 20 emerge from storage in the bearing body 18 can.
  • a Plastic ring 28 used, the one from a relative soft, deformable plastic.
  • a rectifier 30 which is shown in the Embodiment two perpendicular to each other, parallel to the through hole 29 and this has diametrically penetrating walls 31.
  • the Width of these walls 31 is over most of the length of the rectifier 30 is equal to the inside diameter of the Through hole 29, so that between two walls 31 completely separate axially parallel Channels are formed.
  • the through hole 29 has the same throughout Inner diameter, so that no steps or constrictions occur, except, of course, in the area of the nozzle opening 24.
  • the length L of the through hole 29 is at least 70mm, and the diameter d of the through hole 29 chosen so small that the ratio length L / diameter d assumes the value 17 or greater.
  • the length l of the Rectifier 30 in the axial direction corresponds at least 0.25 the length L of the through hole 29.
  • the rectifier 30 has particularly thin walls, the thickness the walls 31 is namely a maximum of 1/40 of the length l of the Rectifier. To in this case the necessary strength to achieve the walls 31, there is the rectifier 30 preferably made of metal.
  • the cleaning liquid supplied generates a rotational flow in the interior 4, in which the Liquid inside the housing 5 about the longitudinal axis of the housing rotates. In doing so, it takes the nozzle body 21 with the rolling element 25 on the inner wall of the Housing 5 creates and rolls on it. This moves the nozzle body 21 in the interior of the housing 5 on a conical jacket, so that one from the outlet opening 24 in Direction of the through hole 29 emerging, more compact Cleaning jet circulates on a cone jacket.
  • This compact cleaning jet is due to the specified dimensions particularly turbulence-free and compact therefore particularly suitable for cleaning purposes.
  • the nozzle insert 23 has an outlet opening, the outlet direction lies exactly on the longitudinal axis of the nozzle body 21, so that the jet from the nozzle body is exactly in the direction the longitudinal axis of the nozzle body is the Outlet direction of the outlet opening 24 in the embodiments 3 and 4 with respect to the longitudinal axis of the Nozzle body 21 inclined.
  • This angle of inclination is in of the order of 0.5 ° to 10 °, preferably at a few degrees.
  • the nozzle body 21 is around with respect to the longitudinal axis of the housing of the rotor nozzle inclined at an angle resulting from the nozzle body 21 with a rolling element 25 on the inner wall of the interior 4 is present.
  • the longitudinal axis of the Nozzle body on a conical surface around the longitudinal axis.
  • the axis of the outlet opening 24 and thus the direction of the emerging beam in turn run on a cone jacket about the longitudinal axis of the nozzle body 21.
  • the direction the axis of the outlet opening 24 with respect to the longitudinal axis the housing of the rotor nozzle thus results from a Superposition of the movements along these two conical surfaces.
  • a particular advantage of the construction described is that the inclination of the outlet opening is only immediate takes place in the outlet area, so that overall a very long nozzle body 21 can be used that but this does not increase the width of the nozzle body.

Landscapes

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

Claims (12)

  1. Ajutage rotatif pour un appareil de nettoyage à haute pression, comportant un boítier (5) qui est pourvu dans une paroi frontale (15) d'un renfoncement (18) en forme de cuvette et traversé au centre, comportant un corps d'ajutage (21) qui présente un perçage traversant (29), qui s'appuie par une extrémité sphérique (20) dans le renfoncement (18) en forme de cuvette, qui s'étend en direction longitudinale sur une partie du boítier (5) et qui présente un diamètre extérieur inférieur au diamètre intérieur du boítier (5), et comportant une entrée (3) pour un liquide, débouchant dans une direction dans le boítier (5), grâce auquel le liquide dans le boítier (5) peut être mis en rotation autour de l'axe longitudinal du boítier (5), de sorte que le corps d'ajutage (21) tourne conjointement avec le liquide en rotation et s'appuie par une surface d'appui (25) à sa périphérique contre la paroi intérieure du boítier (5), l'axe longitudinal du corps d'ajutage (21) étant incliné par rapport à l'axe longitudinal du boítier (5), un redresseur (30) qui présente des parois (31) agencées parallèlement à l'axe et diamétralement dans le perçage traversant (29) étant mis en place dans le tronçon du perçage traversant (29) qui est situé en amont, caractérisé en ce que la longueur (L) du perçage traversant (29) dans le corps d'ajutage (21) s'élève à au moins 70 mm, en ce que le rapport entre la longueur (L) du perçage traversant (29) et son diamètre (d) a la valeur 17 ou une valeur supérieure, et en ce que la longueur (l) du redresseur (30) s'élève à au moins 0,25 fois la longueur (L) du perçage traversant (29).
  2. Ajutage rotatif selon la revendication 1, caractérisé en ce que le diamètre (d) du perçage traversant (29) est constant de bout en bout, exception faite de la région de sortie.
  3. Ajutage rotatif selon l'une ou l'autre des revendications 1 et 2, caractérisé en ce que l'épaisseur des parois (31) du redresseur (30) s'élève au maximum à 1/40e de la longueur (l) du redresseur (30).
  4. Ajutage rotatif selon l'une quelconque des revendications précédentes, caractérisé en ce que le redresseur (30) est constitué en métal.
  5. Ajutage rotatif selon l'une quelconque des revendications précédentes, caractérisé en ce que la largeur des parois (31) du redresseur (30) correspond sur la majeure partie de leur longueur (l) au diamètre (d) du perçage traversant (29), en ce que les parois (31) sont légèrement élargies à l'extrémité du redresseur (30) située en amont, et en ce que les parties élargies des parois (31) pénètrent dans un insert (28) en un matériau déformable, qui forme à l'extrémité du perçage traversant située en amont sa paroi intérieure.
  6. Ajutage rotatif selon la revendication 5, caractérisé en ce qu'il est prévu un anneau en matière plastique (28), mis en place dans un tronçon élargi (27) à l'extrémité du perçage traversant (29) située en amont, qui forme le matériau déformable.
  7. Ajutage rotatif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est prévu à l'extrémité du perçage traversant (29) située en amont un insert d'ajutage (23) présentant une ouverture de sortie (24) dont la direction de sortie est inclinée par rapport a l'axe longitudinal du corps d'ajutage (21).
  8. Ajutage rotatif selon la revendication 7, caractérisé en ce que l'inclinaison de l'ouverture de sortie (24) par rapport à l'axe longitudinal du corps d'ajutage (21) est de 0,5° à 10°.
  9. Ajutage rotatif selon la revendication 8, caractérisé en ce que l'inclinaison de l'ouverture de sortie (24) par rapport à l'axe longitudinal du corps d'ajutage (21) est de 1° à 5°.
  10. Ajutage rotatif selon la revendication 9, caractérisé en ce que l'inclinaison de l'ouverture de sortie (24) par rapport à l'axe longitudinal du corps d'ajutage (21) est de 2° à 3,5°.
  11. Ajutage rotatif selon l'une quelconque des revendications 7 à 10, caractérisé en ce que l'insert d'ajutage (23) est adapté de façon parallèle à l'axe par rapport à l'axe longitudinal du corps d'ajutage (21) et présente une ouverture de sortie inclinée (24).
  12. Ajutage rotatif selon l'une quelconque des revendications 7 à 10, caractérisé en ce que le corps d'ajutage (21) reçoit un insert d'ajutage (23) présentant une ouverture de sortie (24) ménagée de façon parallèle à l'axe dans l'insert d'ajutage (23), et en ce que l'insert d'ajutage (23) dans le corps d'ajutage (21) est agencé de façon inclinée par son propre axe par rapport à l'axe longitudinal du corps d'ajutage (21).
EP94918819A 1994-05-30 1994-05-30 Ajutage rotatif pour appareils de nettoyage a haute pression Expired - Lifetime EP0762941B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT94918819T ATE169845T1 (de) 1994-05-30 1994-05-30 Rotordüse für ein hochdruckreinigungsgerät

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1994/001755 WO1995032804A1 (fr) 1994-05-30 1994-05-30 Ajutage rotatif pour appareils de nettoyage a haute pression

Publications (2)

Publication Number Publication Date
EP0762941A1 EP0762941A1 (fr) 1997-03-19
EP0762941B1 true EP0762941B1 (fr) 1998-08-19

Family

ID=8165860

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94918819A Expired - Lifetime EP0762941B1 (fr) 1994-05-30 1994-05-30 Ajutage rotatif pour appareils de nettoyage a haute pression

Country Status (4)

Country Link
EP (1) EP0762941B1 (fr)
DE (1) DE59406749D1 (fr)
DK (1) DK0762941T3 (fr)
WO (1) WO1995032804A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012111797A1 (de) 2012-12-05 2014-06-18 Reinhard Caliebe Bearbeitungseinrichtung für ein Werkstück
WO2022128085A1 (fr) 2020-12-16 2022-06-23 Alfred Kärcher SE & Co. KG Buse rotative pour dispositif de nettoyage haute pression

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19833261C2 (de) * 1998-07-23 2001-05-17 Anton Jaeger Rotordüse
US6795981B2 (en) * 2001-01-05 2004-09-28 Toto Ltd. Water discharging device
DE102009023647A1 (de) 2009-05-25 2010-12-02 Alfred Kärcher Gmbh & Co. Kg Rotordüse für ein Hochdruckreinigungsgerät

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3902478C1 (fr) * 1989-01-27 1990-07-19 Josef 7918 Illertissen De Kraenzle
DE4013446C1 (fr) * 1990-04-27 1991-05-08 Alfred Kaercher Gmbh & Co, 7057 Winnenden, De
IT1243658B (it) * 1990-10-18 1994-06-16 Interpump Dispositivo per emettere un getto di liquido con asse rotante su una superficie conica.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012111797A1 (de) 2012-12-05 2014-06-18 Reinhard Caliebe Bearbeitungseinrichtung für ein Werkstück
WO2022128085A1 (fr) 2020-12-16 2022-06-23 Alfred Kärcher SE & Co. KG Buse rotative pour dispositif de nettoyage haute pression

Also Published As

Publication number Publication date
DK0762941T3 (da) 1998-11-16
DE59406749D1 (de) 1998-09-24
EP0762941A1 (fr) 1997-03-19
WO1995032804A1 (fr) 1995-12-07

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