EP2882538A1 - Rotordüse für ein hochdruckreinigungsgerät - Google Patents
Rotordüse für ein hochdruckreinigungsgerätInfo
- Publication number
- EP2882538A1 EP2882538A1 EP12743193.0A EP12743193A EP2882538A1 EP 2882538 A1 EP2882538 A1 EP 2882538A1 EP 12743193 A EP12743193 A EP 12743193A EP 2882538 A1 EP2882538 A1 EP 2882538A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- nozzle body
- housing
- bearing surface
- 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.)
- Granted
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 230000001681 protective effect Effects 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 19
- 239000004033 plastic Substances 0.000 claims description 11
- 229920003023 plastic Polymers 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 5
- 229920002530 polyetherether ketone Polymers 0.000 claims description 5
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 description 4
- 230000002028 premature Effects 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/14—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts
- B05B15/18—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts for improving resistance to wear, e.g. inserts or coatings; for indicating wear; for handling or replacing worn parts
Definitions
- the invention relates to a rotor nozzle for a high-pressure cleaning device having a housing which has at least one inlet and one outlet for a liquid, and having a nozzle body arranged in the housing, having a through-channel and having a crowned end on a pan-shaped bearing surface assigned to the outlet. whose longitudinal axis is inclined to the longitudinal axis of the housing and which is displaced by the liquid flowing through the housing in a circulating movement, wherein the longitudinal axis of the nozzle body rotates on a conical surface.
- Such rotor nozzles are known for example from WO 98/06501 and EP 0 798 048 AI. They include a housing having at least one inlet for a liquid. In addition, the housing has an outlet through which the liquid can flow out of the housing. in the
- a nozzle body is arranged, which has a passageway and is supported with a spherical end on a bearing surface.
- the bearing surface is associated with the outlet, in particular it is positioned in alignment with the outlet.
- the nozzle body is placed in a circulating movement about the housing longitudinal axis.
- the liquid flows tangentially into the housing via the at least one inlet and is set in rotation about the longitudinal axis of the housing.
- EP 0379654 it is proposed to equip the nozzle body with a paddle wheel on which the
- Enclosing fluid flows through housing and thereby causes the nozzle body to rotate about the housing longitudinal axis. During its revolution, the nozzle body engages with a contact surface on its circumference to the inner wall of the housing. The longitudinal axis of the nozzle body therefore runs on a cone coat. The liquid flows through the nozzle body and emerges from the housing via the outlet.
- the result of the rotating nozzle body is that a compact liquid jet circulating on a conical surface is produced, which, for example, can be directed onto a surface to be cleaned for cleaning purposes.
- the inlet of the housing can be connected to a high-pressure cleaner, so that the housing can be supplied under high pressure liquid.
- the nozzle body is pressed with its crowned end against the bearing surface. This can lead to the spherical end of the nozzle body being incorporated into the bearing surface, whereby the bearing surface is impaired. This ultimately leads to a shortened life of the rotor nozzle.
- the support surface may be made of plastic, in particular of a PEEK material (polyether ether ketone material), and the spherical end of the nozzle body may be made of brass or steel.
- PEEK material polyether ether ketone material
- Object of the present invention is to develop a rotor nozzle of the type mentioned in such a way that it is inexpensive to produce, without the risk that the spherical end of the nozzle body and / or the spherical end associated bearing surface are damaged within a short time.
- This object is achieved in a rotor nozzle of the generic type according to the invention in that between the spherical end of the nozzle body and the bearing surface, a wear protection element is arranged.
- the wear protection element makes it possible to inexpensively produce both the nozzle body, in particular its crowned end, as well as the bearing surface of a plastic material, despite the considerable pressure forces exerted during operation of the rotor nozzle of the rotating on a conical surface nozzle body on the bearing surface damage to the crowned end of the nozzle body and / or the bearing surface can be avoided.
- the nozzle body is, as has already been pointed out, offset from the liquid flowing through the housing in rotation about the housing longitudinal axis. It can be set in rotation by the liquid impinging directly on it in the housing, in particular without the interposition of a separate gear.
- the liquid can flow around the nozzle body or impinge directly on it, for example, on lateral wing elements of the nozzle body, which form a kind of paddle wheel.
- the wear protection element consists of metal, in particular of steel, or of a ceramic material.
- the wear protection element may for example be formed as a molded part, which is produced by a deformation.
- the wear protection element consists of a forming part, in particular of a sheet metal material, preferably of a steel sheet.
- the spherical end of the nozzle body consists in an advantageous embodiment of plastic, in particular of a PET material (polyethylene terephthalate material). This allows a particularly cost-effective production of the spherical end of the nozzle body.
- the bearing surface is conveniently made of plastic, in particular of a PA material (polyamide material). It is advantageous if the PA material contains a glass fiber content. Alternatively it can be provided that the bearing surface consists of PEEK material. It can also be provided that the bearing surface consists of a ceramic material.
- the wear protection element is held movably or immovably on the bearing surface.
- the wear protection element can cover the bearing surface.
- the wear protection element is connected to the nozzle body.
- the wear protection element can be fixed to the nozzle body.
- the wear protection element is held immovable relative to the nozzle body, so it can not perform a relative movement relative to the nozzle body.
- the wear protection element is favorably pressed or latched to the nozzle body.
- the wear protection element can be pressed onto the spherical end of the nozzle body.
- the wear protection element and the nozzle body have interacting latching elements.
- the wear protection element can have an edge section which points radially outward with respect to the longitudinal axis of the nozzle body and engages behind a wear protection holder connected in one piece with the nozzle body.
- the wear protection element forms a protective cap, which encloses the spherical end of the nozzle body.
- the protective cap may have a passage opening aligned with a nozzle opening of the nozzle body through which the liquid flowing through the nozzle body can flow on its way to the outlet of the housing.
- the nozzle body has a nozzle carrier with a through-channel and a nozzle nozzle fixed to the nozzle with a nozzle channel, wherein a nozzle carrier facing away from the end portion of the nozzle forms the spherical end of the nozzle body and carries the protective cap.
- the nozzle carrier can here as well as the nozzle consist of a plastic material.
- the protective cap is conveniently flat against the nozzle.
- the protective cap is pressed with the nozzle.
- the end wall of the housing forms a support bearing on which the nozzle body rotating in the housing on a conical surface is supported with its crowned end.
- the front wall of the housing can have a depression on its inner side facing the nozzle body, in particular a spherical or conical depression. The recess of the end wall forms the bearing surface, on which the spherical end of the nozzle body can be supported.
- the housing has an end wall, on which the outlet is arranged, and on the inside of the end wall can a separate support bearing be arranged, which comes in addition to the end wall used.
- the support bearing can be configured for example in the form of a Napflagers, which is surrounded by a sealing ring and on its side facing the nozzle body has a pan-shaped, centrally perforated recess, against which abuts the spherical end of the nozzle body.
- the recess of the support bearing thus forms the bearing surface.
- the support bearing may, like the housing of the rotor nozzle and the spherical end of the nozzle body made of plastic material.
- the wear protection element is arranged, which is preferably designed as the spherical end of the nozzle body covering cap and, for example, made of sheet steel or ceramic.
- FIG. 1 shows a schematic longitudinal section through a first embodiment of a rotor nozzle according to the invention with a nozzle body having a nozzle carrier on which a nozzle is fixed;
- FIG. 2 shows an enlarged side view of the nozzle from FIG.
- Wear protection element is placed in the form of a protective cap
- Figure 3 is a sectional view of the nozzle along the line 3-3 in Figure 2, and
- FIG. 4 shows a schematic longitudinal section of a second embodiment of a rotor nozzle according to the invention.
- FIG. 1 schematically shows a first embodiment of a rotor nozzle 10 according to the invention.
- the rotor nozzle 10 is screwed onto a jet pipe 12 of a high-pressure cleaning device not shown in the drawing.
- the jet pipe 12 is shown in Figure 1 only in part, as it is known in the art per se. It comprises a pipe section 13, at whose end, not shown in the drawing, the rotor nozzle 10 facing away from the pressure hose of the high-pressure cleaning device can be connected in a conventional manner.
- the jet pipe 12 comprises a connecting portion 14 with an external thread 15 for releasably connecting the jet pipe 12 with the rotor nozzle 10.
- the rotor nozzle 10 has a housing 18 with a first housing part 19 and a second housing part 20, which together define a substantially frusto-conical interior 22.
- the first housing part 19 has a frustoconical front housing portion 24 with an end wall 26 and a jacket 27.
- the first housing part 19 has a rear housing portion 29 which integrally connects to the front housing portion 24 and which is formed as a hollow cylinder.
- He carries an internal thread 31, in which the connecting portion 14 of the jet pipe 12 is screwed with its external thread 15.
- a cylindrical sealing portion 33 connects to the internal thread 31, which merges via a relative to the longitudinal axis 35 of the housing 18 radially inwardly directed shoulder 37 into the interior 22.
- the second housing part 20 is configured in the form of a cover plate 40, which covers the inner space 22 in the axial direction and rests on the one hand on the shoulder 37 and on the other hand on the jet pipe 12.
- the cover plate 40 is adjoined by a sealing ring 42 surrounding the jet tube 12 in the circumferential direction, which allows a fluid-tight connection of the jet tube 12 to the rotor nozzle 10.
- the cover plate 40 has a plurality, preferably four, in the circumferential direction at a uniform distance from each other arranged tangential inlets 44, can enter the interior 22 via the liquid which is supplied to the rotor nozzle 10 via the jet pipe 12 from a high-pressure cleaning device. Due to the tangential orientation of the inlets 44, the liquid entering the interior space 22 has a directional component oriented tangentially relative to the longitudinal axis 35 of the housing 18. As a result, fluid 22 is set in rotation in the interior 22 about the longitudinal axis 35 of the housing 18.
- the end wall 26 of the front housing section 24 has a coaxial with the longitudinal axis 35 aligned central outlet 46 in the form of an opening which widens conically in the direction away from the cover plate 40 direction.
- a support bearing in the form of a bearing ring 48 is arranged, which is surrounded by a sealing ring 49 in the circumferential direction.
- the bearing ring 48 On its side facing the interior 22, the bearing ring 48 has a pan-shaped, centrally perforated depression which defines a bearing surface 50.
- a nozzle body 52 which comprises a nozzle carrier 54 and a nozzle 56.
- the nozzle 56 forms a crowned, substantially spherical end 58 of the nozzle body 52.
- a nozzle channel 57 extends longitudinally through the nozzle 56.
- the nozzle carrier 54 has a passage 62 extending in the axial direction along a longitudinal axis 60 of the nozzle body 52, in the end region of which the end wall 26 faces, the nozzle 56 is pressed.
- In its end wall remote from the end wall 26 of the passage 62 has a stepped extension, in which a centrifugal force increasing mass body is pressed in the form of a steel ball 65.
- the steel ball 65 is followed by a flow rectifier 67 in the passage 62 in the direction of the nozzle 56.
- the nozzle body 52 is supported with its crowned end 58 on the bearing surface 50 of the bearing ring 48. Liquid, which is located in the interior 22, can flow through the through-passage 62 of the nozzle body 52. In this case, the liquid flows around the steel ball 65 and passes out of the housing 18 via the nozzle channel 57, the bearing ring 48 and the outlet 46.
- the nozzle carrier 54 has on the outside a circumferentially circumferential annular groove in which an O-ring 70 is held.
- the O-ring 70 forms a contact surface with which the nozzle body 52 can be applied to an inner wall 72 of the housing 18.
- the longitudinal axis 60 of the nozzle body 52 is aligned obliquely to the longitudinal axis 35 of the housing 18.
- high-pressure liquid for example water
- the liquid passes via the tangential inlets 44 into the interior 22 and can leave the interior via the through-channel 62, the nozzle channel 57, the bearing ring 48 and the outlet 46.
- the interior 22 is filled with liquid during operation of the rotor nozzle 10, which is caused to rotate about the longitudinal axis 35 of the housing 18 by the fluid flowing in via the tangential inlets 44. It thus forms in the interior 22 a rotating about the longitudinal axis 35 of liquid column.
- the rotating liquid column takes with its spherical end 58 supported on the bearing surface 50 nozzle body 52, so that it also rotates about the longitudinal axis 35 of the housing 18.
- a wear protection element is arranged in the illustrated embodiment of the invention in the form of a protective cap 74 is configured.
- the protective cap 74 is made of a flat material, in the illustrated embodiment of a steel sheet, and is pressed onto the crowned end 58 of the nozzle body 52.
- the protective cap 74 has an opening 75 in alignment with the nozzle channel 57, so that the through-channel 52 and the nozzle channel 57 flowing liquid through the opening 75 can leave the nozzle body 52.
- the protective cap 74 lies flat against the crowned end 58 of the nozzle body 52. With the exception of one with respect to the longitudinal axis 60 of the nozzle body 52 radially outwardly facing edge portion 77, the shape of the protective cap 74 coincides with the shape of the crowned end 58 of the nozzle body 52. The radial edge portion 77 of the protective cap 74 projects beyond the nozzle 56 in the radial direction. It facilitates the handling of the protective cap 74 when pressed with the nozzle 56, which is then pressed into the through-channel 62 of the nozzle carrier 54.
- the protective cap 74 is preferably made of sheet steel.
- the nozzle 56 is conveniently as well as the complete first housing part 19 including the end wall 26 and the bearing ring 48 made of a plastic material.
- the bearing ring 48 may for example consist of a PEEK material and the first housing part 19 may consist of a polyamide material having a glass fiber content of, for example, 30%.
- the nozzle carrier 54 may be made of a plastic material. Despite the use of plastic material for both the nozzle 56 and the bearing ring 48, premature damage to both the bearing surface 50 and the crowned end 58 can be avoided by placing the metallic protective cap 74 between the bearing surface 50 and the crowned end 58.
- FIG. 4 shows a schematic representation of a second embodiment of a rotor nozzle according to the invention, which is referenced overall by the reference numeral 80.
- the rotor nozzle 80 is designed substantially identical to that described above with reference to Figures 1 to 3 rotor nozzle 10. For identical components, therefore, the same reference numerals are used in Figure 4 as in Figures 1 to 3 and to avoid repetition is with respect to these components referred to above.
- the rotor nozzle 80 differs from the rotor nozzle 10 in that the end wall 26 of the housing 18 has on its inner side facing the interior 22 a pan-shaped, centrally perforated recess 82 which forms a bearing surface 83 for the spherical end 58 of the nozzle body 52.
- a separate bearing ring 48, as used in the rotor nozzle 10, is omitted in the rotor nozzle 80.
- the end wall 26 of the rotor nozzle 18 thus forms a support bearing for the nozzle body 52.
- Protective cap 74 covered, which is pressed with the nozzle 56.
- the protective cap 74 is disposed between the crowned end 58 of the nozzle 56 and the bearing surface 83 of the end wall 26 and counteracts premature wear of the bearing surface 83 and the crowned end 58.
Landscapes
- Nozzles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2012/065467 WO2014023341A1 (de) | 2012-08-07 | 2012-08-07 | Rotordüse für ein hochdruckreinigungsgerät |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2882538A1 true EP2882538A1 (de) | 2015-06-17 |
EP2882538B1 EP2882538B1 (de) | 2018-12-05 |
Family
ID=46604361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12743193.0A Active EP2882538B1 (de) | 2012-08-07 | 2012-08-07 | Rotordüse für ein hochdruckreinigungsgerät |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2882538B1 (de) |
CN (1) | CN104379264A (de) |
DK (1) | DK2882538T3 (de) |
WO (1) | WO2014023341A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITUB20150482A1 (it) | 2015-02-10 | 2016-08-10 | Tecomec Srl | Ugello a getto rotante |
CN105855079A (zh) * | 2015-02-10 | 2016-08-17 | 泰科迈克有限责任公司 | 旋转射流喷嘴 |
CN206881955U (zh) * | 2017-04-17 | 2018-01-16 | 福建西河卫浴科技有限公司 | 一种离心散水结构及花洒 |
EP4263063A1 (de) * | 2020-12-16 | 2023-10-25 | Alfred Kärcher SE & Co. KG | Rotordüse für ein hochdruckreinigungsgerät |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3419964C2 (de) * | 1984-05-29 | 1986-04-17 | Alfred Kärcher GmbH & Co, 7057 Winnenden | Spritzkopf eines Hochdruckreinigungsgerätes |
DE3623368C2 (de) * | 1986-07-11 | 1993-12-02 | Kaercher Gmbh & Co Alfred | Rotordüse für ein Hochdruckreinigungsgerät |
DE3902478C1 (de) | 1989-01-27 | 1990-07-19 | Josef 7918 Illertissen De Kraenzle | |
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 |
DE19612704A1 (de) * | 1996-03-29 | 1997-10-02 | Anton Jaeger | Rotordüse, insbesondere für ein Hochdruckreinigungsgerät |
DE19632323A1 (de) | 1996-08-10 | 1998-02-12 | Kaercher Gmbh & Co Alfred | Rotordüse für ein Hochdruckreinigungsgerät |
DE102009023647A1 (de) * | 2009-05-25 | 2010-12-02 | Alfred Kärcher Gmbh & Co. Kg | Rotordüse für ein Hochdruckreinigungsgerät |
-
2012
- 2012-08-07 WO PCT/EP2012/065467 patent/WO2014023341A1/de active Application Filing
- 2012-08-07 DK DK12743193.0T patent/DK2882538T3/en active
- 2012-08-07 CN CN201280074176.0A patent/CN104379264A/zh active Pending
- 2012-08-07 EP EP12743193.0A patent/EP2882538B1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2014023341A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2014023341A1 (de) | 2014-02-13 |
CN104379264A (zh) | 2015-02-25 |
EP2882538B1 (de) | 2018-12-05 |
DK2882538T3 (en) | 2019-03-04 |
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