EP1920847B1 - Rotating nozzle for a high-pressure cleaning device - Google Patents
Rotating nozzle for a high-pressure cleaning device Download PDFInfo
- Publication number
- EP1920847B1 EP1920847B1 EP06023324.4A EP06023324A EP1920847B1 EP 1920847 B1 EP1920847 B1 EP 1920847B1 EP 06023324 A EP06023324 A EP 06023324A EP 1920847 B1 EP1920847 B1 EP 1920847B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- house
- nozzle member
- cleaning device
- fluid
- 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.)
- Active
Links
- 238000004140 cleaning Methods 0.000 title claims description 19
- 239000012530 fluid Substances 0.000 claims description 28
- 238000005096 rolling process Methods 0.000 claims description 15
- 230000000284 resting effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
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 present invention relates generally to nozzles for high-pressure cleaning devices and particularly to such nozzles provided with means making the jet of pressure fluid leaving the nozzle rotate relative to the main body of the nozzle of the cleaning device.
- EP 0 879 644 B1 describes a rotating nozzle section of a cleaning device comprising a cylindrical nozzle house chamber in which there is provided a nozzle member, the exit end of which is in engagement with a seat in such a manner that the nozzle member can undergo pivotal and rotational movement within the cylindrical nozzle house chamber under the influence of high-pressure fluid circulating in the chamber.
- the nozzle member comprises a frusto-conical portion, the outer surface of which rests against the inner wall of a corresponding portion of the cylindrical nozzle house chamber, when the nozzle member is rotating.
- the fluid inlet to the nozzle house chamber is through at least one tangential conduit, the direction of which has an axial component, the tangential direction providing a rotational movement of the fluid in the nozzle house chamber.
- the rotational velocity of the nozzle member about its longitudinal axis is controlled by the frictional force between the surface of the frusto-conical portion of the nozzle member and the corresponding cylindrical portion of the inner wall of the nozzle house chamber, and this document indicates specific materials suitable for these parts and specific coefficients of friction for obtaining a desired rotational velocity.
- a rotating nozzle for a high-pressure cleaning device as defined in claim 1.
- a possible casting of the nozzle house may advantageously use a core, which is easily pulled out of the cast member in contrast to pulling out such a core when the chamber is cylindrical. If the nozzle house is manufactured by cutting by stock removal, this conical geometry provides the advantage that the cut-off material is easier removed backwards out of the nozzle house during machining, this being an advantage whether using plastic or metallic materials for the nozzle house.
- the geometry of the nozzle member is less critical whether manufactured by casting or cutting by stock removal.
- a further advantage is provided by having the reaction force between the nozzle member and the nozzle house directed with a component in a direction reducing the force provide by the pressure in the nozzle house towards the seat in which the nozzle member is positioned during operation.
- FIG. 1 shows a longitudinal cross-sectional view of the rotating nozzle for a high-pressure cleaning device according to a preferred embodiment of the invention generally indicated by reference numeral 1.
- the rotating nozzle 1 comprises a nozzle house 2 forming a body of revolution about a longitudinal axis 9.
- the nozzle house 2 is provided with at least one fluid inlet 5, through which cleaning fluid under pressure is lead into the nozzle house chamber 13.
- the fluid inlet 5 is directed in a plane perpendicular to the longitudinal axis 9 of the nozzle house 2, and in a slightly tangential direction in relation to the nozzle house chamber 13, whereby the fluid in the nozzle house chamber 13 is forced to a rotational movement in the nozzle house chamber 13.
- Other possible orientations of the fluid inlet are possible, as long as the resulting rotational movement of the fluid in the nozzle chamber 13 is provided.
- a hollow nozzle member 3 is pivotable and rotationally guided by engagement between a first end portion 8 of the nozzle member 3 and a corresponding seat 4.
- This seat 4 is provided at a fluid exit opening 14 of the nozzle house 2 longitudinally opposite the fluid inlet 5.
- the nozzle member 3 comprises a substantially tubular rotational symmetrical body having a longitudinal axis 10.
- the nozzle member 3 is provided with an Internal nozzle chamber at one longitudinal end terminated by a fluid outlet 12 provided in a rounded (spherical) portion for engagement with a similarly shaped inner portion of the seat 4.
- This arrangement allows the nozzle member 3 to undergo pivotable and rotational movement relative to the seat 4 and hence to the nozzle house 2.
- the fluid passing through the nozzle member 3 leaves the nozzle house chamber 13 through the fluid exit opening 14.
- the longitudinal end of the nozzle member 3 opposite the first end portion 8 is provided with rectifier 11 for providing a more laminar flow of the fluid inside the nozzle house chamber 13.
- the rectifier 11 can be considered a plug having a number of circular cylindrical openings therethrough, through which the fluid enters the nozzle house chamber 13.
- the nozzle member 3 is provided with a rolling surface 7, which in the embodiments shown in figure 1 is a cylindrical surface.
- the nozzle house 2 is provided with a corresponding frusto-conical wall section 6, and the rolling surface 7 and the frusto-conical wall section 6 are provided in such a way that the nozzle member 3 can perform a rolling movement with the rolling surface 7 in contact with the frusto-conical wall section 6 along its generatrix.
- the rolling surface 7 may also be frusto-conical, narrowing towards first end portion 8 of the nozzle member 3, and the corresponding frusto-conical wall section 6 should thus be provided with an increased conicity in order to provide a contact between the rolling surface 7 and the frusto-conical wall section 6 along its generatrix.
- cleaning fluid rotates within the nozzle house chamber 13 due to the tangential component of the fluid inlet opening 5 into said nozzle house chamber 13.
- This fluid rotation causes the end of the nozzle member longitudinally opposite the first end portion 8 to rotate within the nozzle house chamber 13 along the frusto-conical wall section 6, providing line contact between said frusto-conical wall section 6 and the rolling surface 7 of the nozzle member 3.
- the nozzle member is forced to undergo rotation in the opposite rotational direction about its longitudinal axis 10, due to friction at the contact between the frusto-conical wall section 6 and the rolling surface 7.
- reaction force between the nozzle member 3 and the nozzle house i.e. the forces between the frusto-conical wall section 6 and the rolling surface 7, will have a component directed away from the first end portion 8 of the nozzle member 3 and thus decrease the force with which the nozzle member 3 is pressed against the seat 4 by the pressure in the nozzle house chamber 13.
- a vast number of different materials may be chosen for the nozzle house 2 and the nozzle member 3, e.g. plastic materials, composite materials, ceramics, metals, such as brass. aluminum, stainless steel, etc., rubber and other suitable materials, possibly in combination, for parts of the nozzle house 2 and the nozzle member 3.
- Suitable materials for the seat 4 in the nozzle house 2 and the end portion 8 of the nozzle member 3 could be ceramic materials or metallic materials in order to avoid problems with these elements due to wear.
- Other parts of the rotating nozzle system 1 are chosen primarily in order to provide a simple processing and production of the individual parts.
Description
- The present invention relates generally to nozzles for high-pressure cleaning devices and particularly to such nozzles provided with means making the jet of pressure fluid leaving the nozzle rotate relative to the main body of the nozzle of the cleaning device.
- It is known within the art to apply rotating nozzles in connection with high-pressure cleaning devices, as in documents
US 2003 209611 ,EP 0931594 , orEP0879 644 . - Thus
EP 0 879 644 B1 describes a rotating nozzle section of a cleaning device comprising a cylindrical nozzle house chamber in which there is provided a nozzle member, the exit end of which is in engagement with a seat in such a manner that the nozzle member can undergo pivotal and rotational movement within the cylindrical nozzle house chamber under the influence of high-pressure fluid circulating in the chamber. The nozzle member comprises a frusto-conical portion, the outer surface of which rests against the inner wall of a corresponding portion of the cylindrical nozzle house chamber, when the nozzle member is rotating. The fluid inlet to the nozzle house chamber is through at least one tangential conduit, the direction of which has an axial component, the tangential direction providing a rotational movement of the fluid in the nozzle house chamber. The rotational velocity of the nozzle member about its longitudinal axis is controlled by the frictional force between the surface of the frusto-conical portion of the nozzle member and the corresponding cylindrical portion of the inner wall of the nozzle house chamber, and this document indicates specific materials suitable for these parts and specific coefficients of friction for obtaining a desired rotational velocity. - Based on the above background it is an object of the present invention to provide a rotating nozzle of the above kind, which is optimized with regard to the production process, in which the nozzle house is cast or produced by cutting by stock removal.
- It is a further object of the present Invention to provide a rotating nozzle of the above kind, in which the forces between the seat in the nozzle house and the corresponding end portion of the nozzle member are reduced.
- These and further objects and advantages are according to the invention attained with a rotating nozzle for a high-pressure cleaning device as defined in claim 1. By providing the nozzle house chamber with a frusto-conical wall section, a possible casting of the nozzle house may advantageously use a core, which is easily pulled out of the cast member in contrast to pulling out such a core when the chamber is cylindrical. If the nozzle house is manufactured by cutting by stock removal, this conical geometry provides the advantage that the cut-off material is easier removed backwards out of the nozzle house during machining, this being an advantage whether using plastic or metallic materials for the nozzle house.
- The geometry of the nozzle member is less critical whether manufactured by casting or cutting by stock removal.
- A further advantage is provided by having the reaction force between the nozzle member and the nozzle house directed with a component in a direction reducing the force provide by the pressure in the nozzle house towards the seat in which the nozzle member is positioned during operation.
- Advantageous embodiments, the advantages of which will be evident from the following detailed description, are revealed in the subordinate claims.
- In the following detailed part of the present description, the invention will be explained in more detail with reference to the exemplary embodiment of a rotating nozzle for a high-pressure cleaning device according to the invention shown in the drawings, in which
-
figure 1 shows a cross-sectional view of the rotating nozzle for a high-pressure cleaning device in accordance with the invention. - In the following, a detailed description of a preferred embodiment of the rotating nozzle for a high-pressure cleaning device according to the invention is given, but it is understood that a person skilled in the art will be able to conceive other embodiments of the basic inventive concept set forth in the summary of the invention without deviating from the scope of the invention as defined by the independent claim.
- Thus, with reference to
figure 1 , this figure shows a longitudinal cross-sectional view of the rotating nozzle for a high-pressure cleaning device according to a preferred embodiment of the invention generally indicated by reference numeral 1. The rotating nozzle 1 comprises anozzle house 2 forming a body of revolution about a longitudinal axis 9. At one longitudinal end, thenozzle house 2 is provided with at least one fluid inlet 5, through which cleaning fluid under pressure is lead into thenozzle house chamber 13. The fluid inlet 5 is directed in a plane perpendicular to the longitudinal axis 9 of thenozzle house 2, and in a slightly tangential direction in relation to thenozzle house chamber 13, whereby the fluid in thenozzle house chamber 13 is forced to a rotational movement in thenozzle house chamber 13. Other possible orientations of the fluid inlet are possible, as long as the resulting rotational movement of the fluid in thenozzle chamber 13 is provided. - In the
nozzle house chamber 13, ahollow nozzle member 3 is pivotable and rotationally guided by engagement between afirst end portion 8 of thenozzle member 3 and a corresponding seat 4. This seat 4 is provided at a fluid exit opening 14 of thenozzle house 2 longitudinally opposite the fluid inlet 5. - The
nozzle member 3 comprises a substantially tubular rotational symmetrical body having a longitudinal axis 10. Thenozzle member 3 is provided with an Internal nozzle chamber at one longitudinal end terminated by afluid outlet 12 provided in a rounded (spherical) portion for engagement with a similarly shaped inner portion of the seat 4. This arrangement allows thenozzle member 3 to undergo pivotable and rotational movement relative to the seat 4 and hence to thenozzle house 2. The fluid passing through thenozzle member 3 leaves thenozzle house chamber 13 through the fluid exit opening 14. The longitudinal end of thenozzle member 3 opposite thefirst end portion 8 is provided with rectifier 11 for providing a more laminar flow of the fluid inside thenozzle house chamber 13. The rectifier 11 can be considered a plug having a number of circular cylindrical openings therethrough, through which the fluid enters thenozzle house chamber 13. - The
nozzle member 3 is provided with a rolling surface 7, which in the embodiments shown infigure 1 is a cylindrical surface. Thenozzle house 2 is provided with a corresponding frusto-conical wall section 6, and the rolling surface 7 and the frusto-conical wall section 6 are provided in such a way that thenozzle member 3 can perform a rolling movement with the rolling surface 7 in contact with the frusto-conical wall section 6 along its generatrix. - In an alternative embodiment, the rolling surface 7 may also be frusto-conical, narrowing towards
first end portion 8 of thenozzle member 3, and the corresponding frusto-conical wall section 6 should thus be provided with an increased conicity in order to provide a contact between the rolling surface 7 and the frusto-conical wall section 6 along its generatrix. - During operation of the rotating nozzle, cleaning fluid rotates within the
nozzle house chamber 13 due to the tangential component of the fluid inlet opening 5 into saidnozzle house chamber 13. This fluid rotation causes the end of the nozzle member longitudinally opposite thefirst end portion 8 to rotate within thenozzle house chamber 13 along the frusto-conical wall section 6, providing line contact between said frusto-conical wall section 6 and the rolling surface 7 of thenozzle member 3. During this rotation of thecomplete nozzle member 3, the nozzle member is forced to undergo rotation in the opposite rotational direction about its longitudinal axis 10, due to friction at the contact between the frusto-conical wall section 6 and the rolling surface 7. However, also the rotational direction of the fluid in thenozzle house chamber 13 will act on thenozzle member 3, and this action will try to rotate thenozzle member 3 in an opposite direction of the above-mentioned. By a suitable adjustment of the friction between the frusto-conical wall section 6 and the rolling surface 7, the rotation of thenozzle member 3 about its longitudinal axis 10 can be minimised. This has the advantage that the cleaning fluid will leave the nozzle member in a jet without disintegration thereof due to the rotational velocity of thenozzle member 3 about its longitudinal axis 10. - It will be appreciated that the reaction force between the
nozzle member 3 and the nozzle house, i.e. the forces between the frusto-conical wall section 6 and the rolling surface 7, will have a component directed away from thefirst end portion 8 of thenozzle member 3 and thus decrease the force with which thenozzle member 3 is pressed against the seat 4 by the pressure in thenozzle house chamber 13. - A vast number of different materials may be chosen for the
nozzle house 2 and thenozzle member 3, e.g. plastic materials, composite materials, ceramics, metals, such as brass. aluminum, stainless steel, etc., rubber and other suitable materials, possibly in combination, for parts of thenozzle house 2 and thenozzle member 3. Suitable materials for the seat 4 in thenozzle house 2 and theend portion 8 of thenozzle member 3 could be ceramic materials or metallic materials in order to avoid problems with these elements due to wear. Other parts of the rotating nozzle system 1 are chosen primarily in order to provide a simple processing and production of the individual parts.
Claims (5)
- Rotating nozzle (1) for a high-pressure cleaning device comprising a nozzle house (2) provided with a fluid exit opening comprising a seat (4) co-operating with a first end portion (8) of a nozzle member (3) such that the nozzle member (3) can undergo a pivotal and rotational movement relative to a longitudinal axis (9) through the nozzle house, at least one fluid inlet (5) to the nozzle house (2) providing a rotational movement of the fluid in said nozzle house (2),
characterised in that said nozzle house (2) comprising a frusto-conical wall section (6) and said nozzle member (3) comprising a rolling surface (7), said rolling surface (7) of the nozzle member (3) rolling on said frusto-conical wall section (6) and resting with line contact on the latter along its generatrix. - Rotating nozzle (1) for a high-pressure cleaning device in accordance with claim 1, characterized by said nozzle member (3) rolling surface (7) being a cylindrical surface.
- Rotating nozzle (1) for a high-pressure cleaning device in accordance with claim 1 or claim 2, characterized by the dynamical friction coefficient between the nozzle member (3) rolling surface (7) and the nozzle house (2) frusto-conical wall section (6) being 0.22 or less.
- Rotating nozzle (1) for a high-pressure cleaning device in accordance with any of the preceding claims, characterized by the fluid inlet (5) being directed in a direction in a plane perpendicular to the longitudinal axis (9) through the nozzle house (2).
- Rotating nozzle (1) for a high-pressure cleaning device in accordance with any of the preceding claims, characterized by said nozzle member (3) comprising a rectifier (11), through which the cleaning fluid enters a nozzle member (3) chamber (13), said rectifier (11) providing a more laminar flow of the fluid in said chamber (13).
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06023324.4A EP1920847B1 (en) | 2006-11-09 | 2006-11-09 | Rotating nozzle for a high-pressure cleaning device |
PCT/IB2007/003313 WO2008056218A2 (en) | 2006-11-09 | 2007-11-01 | Rotating nozzle for a high-pressure cleaning device |
CN2007800444941A CN101594941B (en) | 2006-11-09 | 2007-11-01 | Rotating nozzle for a high-pressure cleaning device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06023324.4A EP1920847B1 (en) | 2006-11-09 | 2006-11-09 | Rotating nozzle for a high-pressure cleaning device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1920847A1 EP1920847A1 (en) | 2008-05-14 |
EP1920847B1 true EP1920847B1 (en) | 2017-04-05 |
Family
ID=37622257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06023324.4A Active EP1920847B1 (en) | 2006-11-09 | 2006-11-09 | Rotating nozzle for a high-pressure cleaning device |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1920847B1 (en) |
CN (1) | CN101594941B (en) |
WO (1) | WO2008056218A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022128085A1 (en) * | 2020-12-16 | 2022-06-23 | Alfred Kärcher SE & Co. KG | Rotary nozzle for a high-pressure cleaning device |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009023647A1 (en) * | 2009-05-25 | 2010-12-02 | Alfred Kärcher Gmbh & Co. Kg | Rotor nozzle for a high-pressure cleaning device |
EP2449893B1 (en) | 2010-11-04 | 2016-08-17 | GEA Food Solutions Bakel B.V. | Mass distribution device and molding device |
EP2468104B1 (en) | 2010-12-23 | 2018-09-12 | GEA Food Solutions Bakel B.V. | Cleaning method for a mould drum |
ES2541841T3 (en) | 2011-01-25 | 2015-07-27 | Gea Food Solutions Bakel B.V. | Food production chain |
CA2826801A1 (en) | 2011-02-10 | 2012-08-16 | Gea Food Solutions Bakel B.V. | Food forming drum and process for its manufacture |
WO2013014010A1 (en) | 2011-07-25 | 2013-01-31 | Cfs Bakel B.V. | Food forming apparatus with a food feed member |
RU2620372C2 (en) | 2012-01-20 | 2017-05-25 | Геа Фуд Сольюшнс Бакел Б.В. | System for mass feeding |
RU2682199C2 (en) | 2013-02-01 | 2019-03-15 | Геа Фуд Сольюшнс Бакел Б.В. | Food forming concept |
CA2910907A1 (en) | 2013-05-03 | 2014-11-06 | Gea Food Solutions Bakel B.V. | Sealing member for a food forming drum |
SG11201705756TA (en) * | 2015-02-23 | 2017-08-30 | Stoneage Inc | Internally adjustable spray angle rotary nozzle |
DK3888796T3 (en) * | 2018-11-05 | 2023-11-13 | P A S P A | Rotary jet nozzle assembly for pressure cleaning devices |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1294433B1 (en) | 1997-05-22 | 1999-03-24 | Interpump Group S P A | ROTATING NOZZLE DISPENSER |
DE19803035A1 (en) * | 1998-01-27 | 1999-07-29 | Anton Jaeger | Rotor nozzle |
US6925659B2 (en) * | 2001-02-27 | 2005-08-09 | Toto Ltd. | Fluid jetting device |
US6766967B2 (en) * | 2002-05-07 | 2004-07-27 | Gp Companies, Inc. | Magnet-driven rotary nozzle |
-
2006
- 2006-11-09 EP EP06023324.4A patent/EP1920847B1/en active Active
-
2007
- 2007-11-01 CN CN2007800444941A patent/CN101594941B/en active Active
- 2007-11-01 WO PCT/IB2007/003313 patent/WO2008056218A2/en active Application Filing
Non-Patent Citations (1)
Title |
---|
None * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022128085A1 (en) * | 2020-12-16 | 2022-06-23 | Alfred Kärcher SE & Co. KG | Rotary nozzle for a high-pressure cleaning device |
Also Published As
Publication number | Publication date |
---|---|
CN101594941A (en) | 2009-12-02 |
CN101594941B (en) | 2012-11-21 |
WO2008056218A3 (en) | 2008-07-10 |
WO2008056218A2 (en) | 2008-05-15 |
EP1920847A1 (en) | 2008-05-14 |
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