EP0548408A1 - Strahlkopf für Hochdruckreiniger - Google Patents

Strahlkopf für Hochdruckreiniger Download PDF

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Publication number
EP0548408A1
EP0548408A1 EP91122338A EP91122338A EP0548408A1 EP 0548408 A1 EP0548408 A1 EP 0548408A1 EP 91122338 A EP91122338 A EP 91122338A EP 91122338 A EP91122338 A EP 91122338A EP 0548408 A1 EP0548408 A1 EP 0548408A1
Authority
EP
European Patent Office
Prior art keywords
turbine rotor
bearing
jet
nozzle
pressure
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.)
Withdrawn
Application number
EP91122338A
Other languages
English (en)
French (fr)
Inventor
Kenth Hvid Nielsen
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.)
K E W INDUSTRI AS
Original Assignee
K E W INDUSTRI AS
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 K E W INDUSTRI AS filed Critical K E W INDUSTRI AS
Priority to EP91122338A priority Critical patent/EP0548408A1/de
Publication of EP0548408A1 publication Critical patent/EP0548408A1/de
Withdrawn legal-status Critical Current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
    • 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
    • B05B3/0418—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 comprising a liquid driven rotor, e.g. a turbine
    • B05B3/0422—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 comprising a liquid driven rotor, e.g. a turbine with rotating outlet elements
    • B05B3/0427—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 comprising a liquid driven rotor, e.g. a turbine with rotating outlet elements the outlet elements being directly attached to the rotor or being an integral part of it
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays

Definitions

  • the present invention relates to a jet-producing head for high-pressure cleaners, said head being of the kind set forth in the preamble of claim 1.
  • a jet-producing head of the kind referred to above is described in the specification of the German Patent No. 3,419,964.
  • the head thus known is adapted to produce a rotating jet of cleaning liquid describing the surface of a cone having its apex in the bore of the jet nozzle, and on the background of the specification mentioned, this jet-producing head appears to be well suited to produce such a rotating jet.
  • a certain risk that a small quantity of liquid may leak out from the space surrounding the turbine rotor and the jet nozzle to the outside of the bearing surrounding the latter, especially after prolonged use and wear of this bearing.
  • the jet-producing head may "slobber", i.e. a small quantity of liquid flows down along the surface of the head, possibly landing on the hands of the operator. In the case of aggressive cleaning liquids, this is obviously a major disadvantage.
  • the bearing pressure between the stationary and rotating bearing surfaces surrounding the jet-nozzle opening will adapt itself to the pressure of the liquid supplied to the head.
  • a high supply pressure will cause a high bearing pressure and hence a high resistance towards leakage
  • a low supply pressure whilst still maintaining a sufficient bearing pressure to make the bearing leak-proof, will cause the bearing pressure to be so low as not to produce sufficient friction to prevent the turbine rotor from rotating, even when the reduced supply pressure has also caused a reduction in the energy available for turning the turbine.
  • the jet-producing head shown in the drawing comprises the following stationary parts, all substantially rotationally symmetrical about a common axis 26:
  • the stationary components also comprise an annular bearing member 16 placed upstream of and close to the opening 22 in the second housing part 14 and resting against an abutment surface 23 around the opening 22.
  • the bearing member 16 has on its upstream side a part-spherical bearing surface 13 adapted to cooperate with a complementary bearing surface 28 on the jet nozzle 11 mentioned above.
  • the sole rotating component of the jet-producing head shown consists of two parts rotating together as one, viz.
  • the upstream end of the turbine rotor 5 comprises an annular bearing member 7 cooperating with the stationary bearing member 6 on the liquid-guiding member 3.
  • a radial surface 30 on the turbine rotor 5 cooperates with a radial surface 31 surrounding the male bearing member 6 on the downstream end of the guiding member 3 so as to keep the bearing surface 28 on the jet nozzle 11 close to the bearing surface 13 on the stationary bearing member 16.
  • liquid delivered by the pump of the high-pressure cleaner flows through the supply conduit 1 and the liquid-guiding member 3, issuing in the form of powerful jets through the nozzles 4, thus causing the turbine rotor 5 and with it the jet nozzle 11 to rotate.
  • the liquid having spent a small proportion of its energy in the turbine rotor 5 then flows through the axial openings 8 and the radial openings 9 into the jet nozzle 11, issuing from the latter in the form of a powerful jet, due to the rotation of the nozzle 11 describing the surface of a cone with its apex within the nozzle 11.
  • the bearing pressure between the cooperating bearing surfaces 13 and 28 on the stationary bearing member 16 and the jet nozzle 11 respectively must be sufficiently high to prevent liquid leaking from the space 17, while at low supply pressures, when the energy availably for driving the turbine rotor 5 is considerably less, this bearing pressure must not be so high as to prevent rotation of the turbine rotor 5.
  • both the jet nozzle 11 and the bearing member 16 are in the form of inserts fitted into the turbine rotor 5 and the second housing part 14 respectively with a light press fit. This makes its easy to remove or replace these parts when need arises. It does, however, lie within the scope of the present invention to form the nozzle 11 as an integral part of the turbine rotor 5 and/or to form the stationary bearing member 16 as an integral part of the second housing part 14.
  • the jet-producing head as shown according to the present invention also possesses the advantage of being very easy to dismantle and reassemble.
  • the cover 15 is first removed, such as by opening a bayonet-type closure 33 not shown in detail, after which the second housing part 14 may be unscrewed from the first housing part 18, thus freeing both the liquid-guiding member 3 and the turbine rotor 5 with the jet nozzle 11.
  • the head may be reassembled by repeating the procedure in the reverse order.
  • Leakage between the outer tubular projection 19 on the first housing part 18 and the tubular projection 21 on the second housing part 14 may be prevented in any conventional manner, such as by means of a sealing ring 10.
EP91122338A 1991-12-27 1991-12-27 Strahlkopf für Hochdruckreiniger Withdrawn EP0548408A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP91122338A EP0548408A1 (de) 1991-12-27 1991-12-27 Strahlkopf für Hochdruckreiniger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91122338A EP0548408A1 (de) 1991-12-27 1991-12-27 Strahlkopf für Hochdruckreiniger

Publications (1)

Publication Number Publication Date
EP0548408A1 true EP0548408A1 (de) 1993-06-30

Family

ID=8207481

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91122338A Withdrawn EP0548408A1 (de) 1991-12-27 1991-12-27 Strahlkopf für Hochdruckreiniger

Country Status (1)

Country Link
EP (1) EP0548408A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995009696A1 (en) * 1993-10-05 1995-04-13 Oscar Wilje A method, device and composition in material spraying
WO1998017408A1 (en) * 1996-10-24 1998-04-30 H.T. Research B.V. Method and device for cleaning a dirty surface
EP0925840A1 (de) * 1997-12-19 1999-06-30 Annovi e Reverberi S.r.l. Rotordüse für ein Reinigungsgerät
WO2000029187A1 (de) * 1998-11-12 2000-05-25 Manfred Detterbeck Verfahren und vorrichtung zum reinigen von kunststoff-bauteilen
EP1504821A1 (de) * 2003-08-07 2005-02-09 Arrow Line S.R.L. Multifunktionaler Strahlkopf für Hochdruckreiniger

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3419964A1 (de) * 1984-05-29 1985-12-05 Alfred Kärcher GmbH & Co, 7057 Winnenden Spritzkopf am strahlrohr eines hochdruckreinigungsgeraetes
EP0252261A2 (de) * 1986-07-11 1988-01-13 Alfred Kärcher GmbH & Co. Rotordüse für ein Hochdruckreinigungsgerät
DE8801793U1 (de) * 1987-11-17 1988-03-24 Westergaard, Knud Erik, Hadsund, Dk
DE3708096A1 (de) * 1987-03-13 1988-09-29 Wolfgang Suttner Punktstrahl-rotationsduese fuer hochdruckreinigungsgeraete
EP0379654A1 (de) * 1989-01-27 1990-08-01 Josef Kränzle Rotordüse für ein Hochdruckreinigungsgerät
EP0393689A1 (de) * 1989-04-20 1990-10-24 Ingo R. Dipl.-Ing. Friedrichs Verfahren zur Wirkungsverbesserung einer einen bewegbaren Fluidstrahl erzeugenden Düse und Vorrichtung zur Durchführung des Verfahrens

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3419964A1 (de) * 1984-05-29 1985-12-05 Alfred Kärcher GmbH & Co, 7057 Winnenden Spritzkopf am strahlrohr eines hochdruckreinigungsgeraetes
EP0252261A2 (de) * 1986-07-11 1988-01-13 Alfred Kärcher GmbH & Co. Rotordüse für ein Hochdruckreinigungsgerät
DE3708096A1 (de) * 1987-03-13 1988-09-29 Wolfgang Suttner Punktstrahl-rotationsduese fuer hochdruckreinigungsgeraete
DE8801793U1 (de) * 1987-11-17 1988-03-24 Westergaard, Knud Erik, Hadsund, Dk
EP0379654A1 (de) * 1989-01-27 1990-08-01 Josef Kränzle Rotordüse für ein Hochdruckreinigungsgerät
EP0393689A1 (de) * 1989-04-20 1990-10-24 Ingo R. Dipl.-Ing. Friedrichs Verfahren zur Wirkungsverbesserung einer einen bewegbaren Fluidstrahl erzeugenden Düse und Vorrichtung zur Durchführung des Verfahrens

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995009696A1 (en) * 1993-10-05 1995-04-13 Oscar Wilje A method, device and composition in material spraying
WO1998017408A1 (en) * 1996-10-24 1998-04-30 H.T. Research B.V. Method and device for cleaning a dirty surface
EP0925840A1 (de) * 1997-12-19 1999-06-30 Annovi e Reverberi S.r.l. Rotordüse für ein Reinigungsgerät
US6155494A (en) * 1997-12-19 2000-12-05 Annovi E Reverberi S.R.L. Rotary nozzle device for emitting a water jet
WO2000029187A1 (de) * 1998-11-12 2000-05-25 Manfred Detterbeck Verfahren und vorrichtung zum reinigen von kunststoff-bauteilen
EP1504821A1 (de) * 2003-08-07 2005-02-09 Arrow Line S.R.L. Multifunktionaler Strahlkopf für Hochdruckreiniger
US7175107B2 (en) 2003-08-07 2007-02-13 Arrow Line S.R.L. Multi-function head for high-pressure water gun, in particular for water cleaning machines

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