EP3892382B1 - Buse à rotor - Google Patents

Buse à rotor Download PDF

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Publication number
EP3892382B1
EP3892382B1 EP21166588.0A EP21166588A EP3892382B1 EP 3892382 B1 EP3892382 B1 EP 3892382B1 EP 21166588 A EP21166588 A EP 21166588A EP 3892382 B1 EP3892382 B1 EP 3892382B1
Authority
EP
European Patent Office
Prior art keywords
rotor
fluid
bypass
inflow opening
rotor nozzle
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
Application number
EP21166588.0A
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German (de)
English (en)
Other versions
EP3892382A1 (fr
Inventor
Lothar Hartmann
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.)
Suttner GmbH
Original Assignee
Suttner GmbH
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
Priority claimed from DE102020118175.2A external-priority patent/DE102020118175A1/de
Application filed by Suttner GmbH filed Critical Suttner GmbH
Publication of EP3892382A1 publication Critical patent/EP3892382A1/fr
Application granted granted Critical
Publication of EP3892382B1 publication Critical patent/EP3892382B1/fr
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    • 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
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3006—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being actuated by the pressure of the fluid to be sprayed
    • 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
    • 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
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • 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
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits

Definitions

  • the present invention relates to a rotor nozzle as used for high-pressure cleaners.
  • the present invention relates to a rotor nozzle according to the preamble of claim 1.
  • Nozzles in particular for high-pressure cleaners, are referred to as rotor nozzles, which are designed to generate a circulating jet from a fluid, so that the circulating jet sweeps over an at least essentially conical surface.
  • a generic rotor nozzle is already known. This has a nozzle housing which has a swirl chamber between an inflow opening and an outlet opening for fluid. A rotor which is inclined relative to a longitudinal axis of the nozzle housing is arranged in the nozzle housing. The fluid passes through the rotor and exits through the exit orifice of the rotor nozzle, with the orientation of the rotor determining the direction in which the jet exits. Due to the movement of the rotor during operation of the rotor nozzle, the alignment of the rotor and thus the jet direction changes continuously, in particular circumferentially.
  • the rotor is movably supported on a side facing the outlet opening. This can be done by a foot of the rotor supported in a pan.
  • the rotor has an inlet for the fluid, which can be guided in the rotor and discharged through the outlet opening in the direction of the jet.
  • the rotor itself preferably describes an at least essentially conical path of movement or is designed for this purpose.
  • the rotor can be mounted with a bearing on a side facing away from the outlet opening on a bearing part that is rotatable about the longitudinal axis. In the prior art mentioned, this is done by mounting the rotor on a disk that is rotatably mounted about the longitudinal axis and has a counterweight in order to compensate for the centrifugal force caused by the rotor during operation by a counterweight that is compensated by a compensating body with a corresponding counterweight can be.
  • DE 10 2006 019 078 A1 known constructions in which the rotor rolls on an inner peripheral surface of the vortex chamber has the from DE 10 037 033 A1 known solution has the advantage that the resulting imbalance and the resulting vibrations can be reduced by the compensation of the centrifugal force by means of the compensating body.
  • DE 10 2005 037858 A1 discloses another prior art rotary nozzle.
  • a proposed rotor nozzle has a nozzle housing which has a turbulence chamber between an inflow opening and an outlet opening, a rotor which is inclined to a longitudinal axis of the nozzle housing being arranged in the nozzle housing and which is movably supported on a side facing the outlet opening and on a side facing away from the outlet opening Side is mounted on a rotatable about the longitudinal axis bearing part.
  • the bearing part can be rotated by a fluid that enters the vortex chamber through the inflow opening.
  • the rotor nozzle has a bypass and a pressure-controlled valve in addition to the inflow opening.
  • the pressure-controlled valve automatically releases the bypass as a function of a pressure of the fluid, so that the fluid can flow into the swirl chamber through the inflow opening and additionally through the bypass.
  • the flow in the vortex chamber can be influenced so that, in particular, it can be prevented that the rotational speed of the bearing part exceeds a desired rotational speed or a nominal rotational speed.
  • the wear can be minimized or increased wear can be prevented and/or damage to the rotor nozzle due to an excessively high speed can be prevented.
  • the bypass preferably has an outlet direction that deviates from an outlet direction of the inflow opening. In particular, this allows the flow conditions in the vortex chamber to be varied or influenced.
  • the rotational speed of the bearing part or rotor is determined in particular by the rotation of the fluid in a plane running perpendicular to the longitudinal axis.
  • each (imagined or real) particle of the fluid can be divided into a Z component, referred to below as an axial component, a radial component and a tangential component.
  • the axial component is parallel to the longitudinal axis
  • the radial component is radial to the longitudinal axis
  • the tangential component is perpendicular to the axial component and the radial component, so that the components form a three-dimensional Cartesian coordinate system.
  • the rotation of the bearing part or rotor is in particular decisively influenced or determined by the respective local tangential component of the fluid or particle. If the bypass now has a different outlet direction than the inflow opening, the ratio between the axial component, the radial component and the tangential component of the fluid or the particles in the vortex chamber is changed, so that by selecting the outlet direction accordingly, it can be prevented in particular that the tangential component takes on too large a value. This in turn can prevent the rotational speed of the bearing part--determined decisively by the tangential component--from becoming too great or exceeding a rotational speed limit value.
  • an angle enclosed between the outlet direction of the bypass and a plane running perpendicularly to the longitudinal axis is larger than an angle enclosed between this plane and the outlet direction of the inflow opening.
  • the division of the movement of the fluid into the explained movement components can be particularly effectively influenced in this way, in particular an excessive increase in the tangential component can be reduced. This is achieved in particular by increasing the axial component.
  • the rotor nozzle has a plurality of bypasses, the bypasses each having a pressure-controlled valve which automatically opens the respective bypass as a function of a pressure of the fluid.
  • the valves particularly preferably have at least two different threshold values for the pressure at which the respective bypass is released by the respective valve.
  • the rotor has a channel for guiding the fluid from an inlet of the rotor, which is open to the turbulence chamber, to the outlet opening, with the channel having a first and a second section as proposed, with the direction of flow of the fluid in the first Section is at least substantially opposite to the flow direction of the fluid in the second section.
  • this enables a more compact design of the rotor nozzle compared to previously known solutions, while the quality of the fluid jet generated by the rotor nozzle remains the same.
  • the first section preferably has the inlet, with the inlet being arranged on a side of the first section facing the outlet opening.
  • the fluid preferably enters the rotor "from below" or the channel is designed accordingly.
  • the first section is preferably arranged further out on the rotor than the second section. This allows the length of the rotor to be reduced.
  • the second section is particularly preferably formed by a central tube and the first section is formed by a coaxial tube which surrounds the second section or the central tube.
  • the central tube opens into the outlet opening at a first end and into the coaxial tube at a second end, with or such that the coaxial tube bell-shaped around the central tube. This is particularly advantageous in terms of design, and is particularly easy to implement.
  • first and/or the second section or the coaxial tube and/or the central tube each has/have a plurality of flow guides which are separate from one another and run parallel to one another. In this way, a laminar and/or linear flow in the channel can be achieved or ensured and/or a sufficient calming effect for the fluid can be achieved.
  • FIG. 1 shows a proposed rotor nozzle 1 for a high-pressure cleaner 2.
  • the rotor nozzle 1 forms part of the high-pressure cleaner 2 or is fluidly connected thereto, so that a fluid F that is pressurized and made available by the high-pressure cleaner 2 can be or is delivered via the rotor nozzle 1 .
  • the rotor nozzle 1 forms the tip of a lance 3 for the high-pressure cleaner 2.
  • the rotor nozzle 1 can be supplied with the fluid F via the lance 3.
  • the lance 3 has a valve and/or is connected to the high-pressure cleaner 2 with a hose 4, so that fluid F provided by the high-pressure cleaner 2 can be discharged via the hose 4 and the lance 3 and ultimately via the rotor nozzle 1 .
  • a pistol or the like can also be provided.
  • the high-pressure cleaner 2 is preferably a manually operated high-pressure cleaner 2 and is preferably used in the private sector, for example for cleaning the outside of buildings such as houses, garages or parts thereof, for example outside walls, roofs, terraces and so on.
  • Another preferred area of use for the high-pressure cleaner 2 is the cleaning of vehicles, particularly in the private sector. In principle, however, other areas of use for the high-pressure cleaner 2 are also possible.
  • the proposed rotor nozzle 1 is therefore designed in particular for use with a high-pressure cleaner 2 . In principle, however, the rotor nozzle 1 can also be used in other areas.
  • FIG. 2 shows a schematic perspective view of a proposed rotor nozzle 1.
  • the rotor nozzle 1 has a nozzle housing 5 .
  • the rotor nozzle 1 or the nozzle housing 5 has a longitudinal axis L.
  • the longitudinal axis L preferably represents a central axis, main axis and/or main extension axis of the rotor nozzle 1 or the nozzle housing 5.
  • Directional information such as “axial”, “radial” or the like preferably refers to the longitudinal axis L below.
  • the nozzle housing 5 and/or the rotor nozzle 1 is preferably at least substantially symmetrical, in particular rotationally symmetrical and/or cylindrically symmetrical, to the longitudinal axis L.
  • the rotor nozzle 1 or the nozzle housing 5 has, in particular at one axial end, an outlet opening 6 through which fluid can emerge from the rotor nozzle 1 or can be discharged from the rotor nozzle 1 .
  • the fluid F exits the rotor nozzle 1 in particular as a fluid jet.
  • the rotor nozzle 1 or the nozzle housing 5 is preferably designed for connection to a delivery device for the fluid F, in particular the lance 3 .
  • a mounting means such as a thread and/or a sealing means such as one or more O-rings can be provided.
  • In 3 1 shows the inner workings of the rotor nozzle 1 in a schematic perspective view in which the nozzle housing is shown as a section.
  • FIG. 4 shows a sectional view of the rotor nozzle 1.
  • the inner workings of the rotor nozzle 1 are also shown in section, so that further details and in particular a path W, which the fluid F takes through the rotor nozzle 1, can be seen.
  • the path W is referred to as the fluid path W below.
  • the rotor nozzle 1 has an inflow opening 7 for the fluid F.
  • the inflow opening 7 preferably has a plurality of separate openings 7A or is formed as a result.
  • the inflow opening 7 or the openings 7A are formed by a plurality of bores.
  • the rotor nozzle 1 or the nozzle housing 5 has a vortex chamber 8 .
  • the vortex chamber 8 is preferably formed and/or delimited at least in sections by the nozzle housing 5 .
  • the vortex chamber 8 is arranged or formed between the inflow opening 7 and the outlet opening 6 .
  • the fluid F can enter the vortex chamber 8 through the inflow opening 7 .
  • the fluid F can leave the rotor nozzle 1 via the outlet opening 6, in particular in the form of a fluid jet.
  • the pressure of the fluid F in the vortex chamber 8 when the rotor nozzle is in operation is usually several hundred bars, for example at least 200 bars or more and/or at most 500 bars or less.
  • the rotor nozzle 1 has a rotor 9 .
  • the rotor 9 is arranged in the nozzle housing 5 or in the vortex chamber 8 .
  • the rotor 9 can be moved in the vortex chamber 8 , in particular it can be rotated about the longitudinal axis L .
  • the rotor 9 is inclined to the longitudinal axis L.
  • the longitudinal axis L preferably corresponds to an axis of symmetry of the cone or truncated cone over which the rotor 9 or the fluid F sweeps with its jet direction S.
  • the rotor 9 preferably has the outlet opening 6 or the rotor 9 opens into the outlet opening 6.
  • the rotor 9 is fluidically connected to the outlet opening 6 in such a way that during operation the fluid F flows through the rotor 9 and from the rotor 9 to the outlet opening 6 and exits from the rotor nozzle 1 there.
  • the rotor 9 is movably supported on the side facing the outlet opening 6 .
  • the rotor 9 can be mounted in a bearing pan 10, in particular on the outlet opening side.
  • the bearing socket 10 is part of the nozzle housing 5 or is connected to the nozzle housing 5 .
  • the rotor 9 preferably has a rotor tip 11 which corresponds to or has a complementary shape to the bearing pan 10 , so that a preferably at least essentially fluid-tight seat of the rotor tip 11 in the bearing pan 10 is made possible.
  • the rotor 9 is preferably rotatably mounted in the bearing pan 10 .
  • the rotor 9 performs a wobbling movement, in particular on an at least essentially conical path which is symmetrical to the longitudinal axis L.
  • the movement or movability of the rotor 9 results in a jet direction S of the fluid F, which during operation also sweeps over an at least essentially conical basic shape, with the angle enclosed between the jet direction S and the longitudinal axis L preferably being at least essentially constant and / or an angle between the longitudinal axis L and a center or symmetry axis of the rotor 9 corresponds.
  • the center or symmetry axis of the rotor 9 corresponds to the jet direction S in the example shown.
  • the rotor nozzle 1 has a bearing part 12 which is mounted so as to be rotatable about the longitudinal axis 9 .
  • the bearing part 12 preferably has a bearing 13 for mounting the rotor 9 , in particular a rotor end 14 of the rotor 9 facing away from or opposite the rotor tip 11 .
  • the rotor 9 or the rotor end 14 is mounted on the bearing part 12 or bearing 13 .
  • the rotor 9 is therefore preferably mounted with its rotor tip 11 in the bearing socket 10 at one end, which forms the outlet opening 6 or opens into it, and is mounted on the bearing 13 of the bearing part 12 on another, preferably opposite side, so that the rotor 9 following a rotational movement of the bearing part 13 with its center or axis of symmetry, which in the present case corresponds to the beam direction S, is guided along the previously explained movement.
  • the rotor 9 is preferably designed and/or arranged or mounted in such a way that it does not come into contact with the nozzle housing 5 .
  • the rotor 9 does not roll off the nozzle housing 5 during its rotational or tumbling movement, as is the case with some solutions known from the prior art.
  • the fluid path W through the rotor nozzle 1 is indicated with dashed lines.
  • the fluid path W initially extends from the inflow opening 7 into the vortex chamber 8.
  • the inflow opening 7 is designed and arranged such that the fluid F rotates in the vortex chamber 8 and in particular around the longitudinal axis L (not shown).
  • the rotation of the fluid F in the vortex chamber 8 brings about the rotational movement or wobbling movement of the rotor 9 .
  • the rotor nozzle 1 is constructed in such a way that the fluid F is guided through the rotor 9 to the outlet opening 6 .
  • the outlet opening 6 is preferably formed by the rotor 9 .
  • the rotor 9, also referred to as a stilt or nozzle body, is preferably designed so that the fluid F flows through it, as a result of which the fluid F reaches the outlet opening 6 from the turbulence chamber 8 and can be discharged through the outlet opening 6.
  • the bearing part 12 preferably has a counterweight 15 which is designed in any case to compensate for a centrifugal force 16 which is caused or can be caused by the mass of the rotor 9 during operation.
  • the counterweight 15 is preferably designed to compensate for a radial component 18 of a recoil 17, which occurs during operation of the rotor nozzle 1 as a result of the fluid F escaping from the outlet opening 6.
  • the recoil 17 can be broken down into a force component directed parallel to the longitudinal axis L and a force component directed perpendicularly or radially, in particular outwards, to the longitudinal axis L.
  • the force component directed perpendicularly or radially to the longitudinal axis L is abbreviated as the radial component 18 .
  • the force component directed parallel to the longitudinal axis L does not change at a constant delivery volume flow and is unproblematic when the rotary nozzle or a high-pressure cleaner 2 is in operation.
  • the radial component 18 changes its direction continuously as a result of the rotational or tumbling movement of the rotor 9 and the continuous change in the jet direction S that is produced as a result.
  • the direction of the radial component 18 corresponds at least essentially to the direction of the centrifugal force 16.
  • the recoil 17 and in particular the radial component 18 are not negligible, but rather, in addition to the centrifugal force 16, to a Imbalance and the resulting vibrations. It has been shown that the radial component 18 can be several Newtons, for example 10, 20 or 30 N.
  • the mass of the counterweight 15 preferably exceeds that for compensating for the centrifugal force 16 caused by the rotor 9. In this way, the radial component 18 in particular can be compensated.
  • the counterweight 15 has an additional mass, the additional mass representing that portion of the mass of the counterweight 15 by which the mass of the counterweight 15 exceeds the mass required to compensate for the centrifugal force 16 .
  • the radial component 18 is preferably at least essentially compensated for by the counterweight 15 or its additional mass, which advantageously leads to low-vibration operation of the proposed rotor nozzle 1 .
  • the rotor nozzle 1 is preferably designed or adapted for operation with a specific fluid pressure (nominal pressure) and/or a specific speed of the rotor 9 (nominal speed) and/or for delivering a defined delivery volume flow through the outlet opening 6 .
  • This fixed delivery volume flow is referred to in particular as the nominal delivery volume flow.
  • the nominal speed of the rotor 9 is preferably more than 2000 and/or less than 10,000 revolutions per minute, for example about 5000 or 6000 revolutions per minute.
  • the centrifugal force 16 (to be compensated) is understood here in particular as the centrifugal force 16 or the amount of the centrifugal force 16 that is generated by the rotation of the rotor 9 in nominal operation, i.e. at a predetermined speed (nominal speed) and/or a predetermined output current (nominal -Discharge volume flow), for which the rotor nozzle 1 is provided, arises.
  • the rated speed is preferably a speed of the rotor 9 at a specified operating point, a specified fluid pressure of the fluid F, a specified Exit speed of the fluid F from the outlet opening 6 or at a predetermined delivery volume flow of fluid F per time, which is delivered from the outlet opening 6.
  • the amount of recoil 19 depends on the operating point of rotor nozzle 1 .
  • the amount of recoil 19 depends on the operating pressure of the fluid F, on the delivery volume flow of the fluid F and/or the exit speed of the fluid F from the exit opening 6 .
  • the discharge volume flow is the volume of fluid F per unit of time that is discharged from the outlet opening 6 and the discharge rate is the speed of the fluid F as it emerges from the outlet opening 6.
  • the counterweight 15 or its mass is preferably dimensioned or selected and/or arranged in such a way that the counterweight 15 generates a counterforce 19 at a nominal output volume flow of the rotor nozzle 1, which at least essentially corresponds to the sum of the centrifugal force 16 and the radial component 18 compensated.
  • the counterweight 15 or its mass is preferably selected and/or arranged such that the counterforce 19 is antiparallel to the centrifugal force 16 and/or the radial component 18 and/or the amount of the sum of the centrifugal force 16 (in nominal Operation) and the radial component 18 corresponds.
  • the counterforce 19 is in particular the centrifugal force generated by the rotation of the counterweight 15 or the centrifugal force that acts on the counterweight 15 during rotation.
  • the counterweight 15 or its mass is preferably dimensioned and/or arranged in such a way that the sum of centrifugal force 16 and radial component 18 is overcompensated if the nominal delivery volume flow is not reached and/or if the nominal delivery volume flow is exceeded, the sum of centrifugal force 16 and Radial component 18 is undercompensated.
  • Weight compensation is preferably provided which, after 100 percent compensation for the vibration-generating (rotor) centrifugal force 16, reduces a design-related second vibration-generating force in rotor nozzles 1, in particular the radial component 18, by at least 5% (preferably 10%, in particular 15%) and/or a maximum of 190% (preferably 180%, in particular 170%) compensated.
  • the second vibration-generating force can preferably be calculated using the performance parameters implemented on the rotor nozzle 1 , in particular the nominal delivery volume flow or volume [l/min], pressure [bar] and/or the angle of inclination of the rotor 9 .
  • the dimensioning of the counterweight 15 or its mass is preferably such that the radial component 18, in particular at the nominal delivery volume flow, is at least 5%, preferably 10%, in particular 15%, and/or less than 190%, preferably 180%, in particular 170%, is compensated.
  • the counterweight 15 or its mass is therefore preferably dimensioned and/or arranged in such a way that the radial component 18 (in particular at the nominal speed of the rotor 9 or at the nominal delivery volume flow) is at least 5%, preferably 10%, in particular 15%, and/or less than 190%, preferably 180%, in particular 170%, in addition to compensating for only the centrifugal force 16.
  • the dimensioning of the counterweight 15 or its mass is preferably such that the centrifugal force 16, in particular at the nominal speed of the rotor 9 or the nominal output volume flow, by at least 5%, preferably 10%, in particular 15%, and / or less than 190%, preferably 180%, in particular 170%, is overcompensated.
  • the counterweight 15 or its mass is therefore preferably at least 5%, preferably 10%, in particular 15%, and/or less than 190%, preferably 180%, in particular 170% heavier than it would be to compensate for the centrifugal force 16 alone .
  • the counterweight 15 is preferably arranged or can be arranged at least essentially radially opposite the bearing 13 on the bearing part 12 .
  • the counterforce 19 generated by the counterweight 15 depends on the mass of the counterweight 15 and the position of the counterweight 15 with respect to the longitudinal axis L. FIG. Correspondingly, by changing the position of the counterweight 15 or the position of the center of gravity of the counterweight 15, the counterforce 19 generated can be changed and in particular adapted to different nominal speeds and/or nominal delivery volume flows.
  • the rotor nozzle 1 is therefore preferably designed in such a way that the arrangement and/or mass of the counterweight 15 can be changed and/or the counterweight 15 can be exchanged.
  • the counterweight 15 is formed in particular by a separate component that can be inserted into the bearing part 12 and/or removed from the bearing part 12, preferably without an additional tool.
  • This separate component, which forms the counterweight 15, is referred to below in particular as a weight body.
  • the counterweight 15 or the weight body is therefore preferably exchangeable.
  • the bearing part 12 preferably has one or more weight receptacles 20 .
  • the weight receptacles 20 are each designed to hold the counterweight 15 or a weight body of the counterweight 15 .
  • the counterweight 15 can be adjusted in particular, particularly preferably by inserting different weight bodies into the weight receptacle 20 or weight receptacles 20.
  • the weight receptacles 20 can be arranged on the bearing part 12 at different radial distances from the longitudinal axis L, for example.
  • one or more weight receptacles 20 can be provided, which are not arranged radially opposite the bearing 13 but are offset in particular in the circumferential direction to a position radially opposite the bearing 13 .
  • a plurality of weight receptacles 20 are preferably arranged symmetrically to the radial on which or on the extension of which the bearing 13 is arranged.
  • several weights can be arranged symmetrically to the bearing 13 on the bearing part 12 or inserted into the bearing part 12 and/or any phase shift that may occur between the radial component 18 and the centrifugal force 16 can be taken into account and compensated for by the counterweight 15.
  • the radial component 18 and the centrifugal force 16 can be out of phase with one another, so that the centrifugal force 16 and the radial component 18 point in different directions.
  • the counterweight 15 can have a plurality of separate weight bodies or be formed by them.
  • the weight bodies can be designed identically or differently. Differently trained weight body can differ in particular in their mass, their density, their volume and/or their external shape.
  • the weight receptacles 20 are preferably formed by recesses in the bearing part 12 that extend axially or parallel to the longitudinal axis L.
  • the counterweight 15 can be movable or displaceable - in particular during operation of the rotor nozzle 1 and/or automatically - so that the distance between the center of gravity of the counterweight 15 and the longitudinal axis L depends on the rotational speed of the bearing part 12 and / or can be changed as a function of a delivery volume flow. It can particularly preferably be provided that the distance of the counterweight 15 or the center of gravity of the counterweight 15 from the longitudinal axis L increases with increasing rotational speed of the bearing part 12 and/or with increasing delivery volume flow.
  • the counterweight 15 can be moved within the bearing part 12 or the weight receptacle 20 and is held in a rest position or is urged into a rest position in particular by a spring or the like.
  • the spring or other device can then be designed in such a way that the counterforce 19 of the counterweight 15 exceeds the spring force, by which the counterweight 15 is held in its rest position or is driven into its rest position, from a certain rotational speed and/or from a certain discharge volume flow , so that the counterweight 15, caused by the counterforce 19, is driven radially outward against the spring force and thus shifts its center of gravity.
  • the changed position of the counterweight 15 or its center of gravity then causes an increased counterforce 19, which in turn can compensate for the increased centrifugal force 16 and/or the increased recoil 17 or its radial component 18. In this way, undesired vibrations can be avoided even if a nominal rotational speed is exceeded.
  • the rotor nozzle 1 or the bearing part 12 preferably has a blade part 21 .
  • the blade part 21 is preferably rotatably mounted about the longitudinal axis L.
  • the blade part 21 has blades 22 .
  • the blade part 21 or bearing part 12 can be rotated via the blades 22 .
  • the blades 22 are formed in particular by elements arranged radially from the blade part 21 and in the circumferential direction on the blade part 21 .
  • the blades 22 or blade part 21 enable or support a rotation of the bearing part 12 and thus of the rotor 9 , which is coupled to the bearing part 12 , by the fluid F rotating in the vortex chamber 8 .
  • the blades 22 have or form contact surfaces that extend radially and/or at least substantially parallel to the longitudinal axis L. The blades 22 increase the contact surface for the fluid F rotating in the vortex chamber 8 and/or improve the efficiency when converting the kinetic energy of the fluid F into rotational energy or rotation of the bearing part 12 and/or the rotor 9 .
  • the bearing part 12 is preferably designed in multiple parts or the bearing part 12 has a number of separate components.
  • the bearing part 12 has a bearing device 23 in addition to the blade part 21 .
  • the bearing device 23 represents, in particular, a component that is separate from the blade part 21.
  • the bearing device 23 is preferably coupled or can be coupled in a rotationally fixed manner to the blade part 21 .
  • the bearing part 12 is formed by the bearing device 23 and the blade part 21 .
  • the bearing device 23 preferably has the bearing 13 for the rotor 9 or forms this.
  • the weight receptacle 20 or weight receptacles 20 is/are preferably delimited at least in sections by the bearing device 23 and at least in sections by the blade part 21 .
  • the weight mount(s) 20 is/are thus formed between the bearing device 23 and the shovel part 21 or together by the bearing device 23 and the shovel part 21 .
  • Different storage devices 23 can be provided, which differ by the position of the bearing 13, in particular the distance of the bearing 13 from the Longitudinal axis L, and / or the number and / or arrangement of the weight recordings 20 differ.
  • the angle between the beam direction S and the longitudinal axis L is preferably more than 5° and/or less than 20°, preferably about 10° to 15°.
  • the bearing 13 preferably has a bearing element 24 which is subjected to pressure.
  • the rotor 9 or the rotor end 14 is preferably mounted at least essentially free of play by the bearing element 24 . This is conducive to low wear and the prevention or reduction of vibrations.
  • the rotor end 14 is preferably mounted on the bearing element 24 .
  • the bearing element 24 is pressurized or prestressed in particular in the direction of the rotor 9 or the rotor end 14 . In the example shown, this is realized by a spring 24A, which exerts a force on the bearing element 24 and thus presses the bearing element 24 in the direction of the rotor 9 . In principle, however, other solutions are also possible.
  • the bearing element 24 or the spring 24A preferably exerts a force both in the axial direction towards the outlet opening 6 and in the radial direction inwards towards the longitudinal axis L, so that the rotor 9 can be seated in the bearing 13 or is mounted with the bearing element 24 .
  • the inflow opening 7 preferably has a plurality of openings 7A or is formed by them.
  • the rotor nozzle 1 has an insert 25 which has the inflow opening 7 or openings 7A or in which the inflow opening 7 or the openings 7A are formed.
  • the insert 25 is preferably inserted or inserted into the nozzle housing 5 on a side facing away from the outlet opening 6 .
  • the insert 25 On one of the outlet openings 6 On the side facing away, the insert 25 preferably has a coupling section 25A for coupling or fluidic, in particular fluid-tight, connection of the rotor nozzle 1 to the high-pressure cleaner 2 or a part thereof, in particular the lance 3 .
  • the insert 25 or coupling section 25A preferably has an inlet 25B through which the fluid F can enter the insert 25 and thus the rotor nozzle 1 .
  • the inlet 25B is preferably formed by a central recess or bore that is coaxial with the longitudinal axis L. FIG.
  • the insert 25 preferably has different sections and/or is designed in several parts.
  • the various sections of the insert 25 are formed by separate components.
  • the insert 25 or coupling section 25A preferably has one or more passages 25E through which the fluid F can reach the inflow opening 7 from the inlet 25B.
  • the inflow opening 7 or the openings 7A is/are preferably formed by one or more openings in an inflow section 25C of the insert 25 .
  • the inflow portion 25C is preferably a separate component from the coupling portion 25A.
  • the inflow opening 7 preferably has an outlet direction 7B which runs transversely to a radial direction.
  • the outlet direction 7B is preferably the direction in which the fluid F passes through the inflow opening 7 or leaves the inflow opening 7 and/or enters the vortex chamber 8 .
  • the outlet direction 7B is perpendicular to the cross section of the inflow opening 7 and/or parallel to a longitudinal or symmetrical axis of the inflow opening 7 or the opening that forms the inflow opening 7 .
  • the outlet direction 7B is particularly preferably transverse to the radial line, which leads from the longitudinal axis L to the inflow opening 7 or the respective opening 7A.
  • the outlet opening 7B is preferably at least essentially tangential to the longitudinal axis L.
  • the outlet direction 7B encloses an angle with the radial line pointing to the inflow opening 7 or opening 7A.
  • the angle is preferably more than 0° and/or at most 90°.
  • the outlet direction 7B preferably runs at least essentially parallel to a plane E perpendicular to the longitudinal axis L. In principle, however, the outlet direction 7B can also be inclined with respect to this plane E, in particular in the direction of the vortex chamber 8.
  • Level E is in 3 indicated by dashed lines.
  • the relative position of the plane E along the longitudinal axis L is preferably of no particular importance, since the plane E merely serves to clarify or define different directions.
  • Different openings 7A of the inflow opening 7 preferably have different outlet directions 7B.
  • the previous explanations regarding the outlet direction 7B preferably also apply in relation to each individual opening 7A.
  • the openings 7A are preferably offset in the circumferential direction on the inflow section 25C.
  • the rotor nozzle 1 preferably has a cross-sectional control of the inlet or inlets for fluid F into the vortex chamber 8 .
  • By controlling or changing the (hydraulic or cumulative) cross section it is possible to change the flow conditions in the vortex chamber 8 .
  • the control is preferably carried out as a function of the pressure present at the inlet 25B of the rotor nozzle 1 or the rotor nozzle 1 is designed for this purpose.
  • the rotor nozzle 1 can thus be designed for the preferably automatic control of the (hydraulic) cross section of the inlet (or the sum of all inlets) for fluid F into the vortex clamp 8, depending on the pressure of the fluid F at the inlet 25B.
  • the (hydraulic) cross-section is preferably expanded continuously, steadily, monotonically, strictly monotonically and/or at least substantially proportionally, in particular from a certain threshold pressure, depending on the (further) increase in pressure, or the rotor nozzle 1 is designed for this purpose.
  • the control or controllability of the (hydraulic) cross section of the inlet or inlets into the vortex chamber 8 for the fluid F is particularly preferably a control which is at least essentially or partially at least essentially proportional to the pressure of the fluid F at the inlet 25B .
  • the rotor nozzle 1 has, in addition to the inflow opening 7 , a bypass 26 and a pressure-controlled valve 27 .
  • the valve 27 is designed to automatically release the bypass 26 depending on the pressure of the fluid F, so that when the valve 27 is open or the bypass 26 is released, the fluid F can flow through the inflow opening 7 and additionally through the bypass 26 into the swirl chamber 8 can flow in.
  • the bypass 26 can be released partially.
  • the opening of the valve 27 can therefore take place with a different opening cross section, depending on the pressure, in particular with an opening cross section of the valve 27 that increases with increasing pressure.
  • the control can take place in this way.
  • the bypass 26 is an opening—provided in addition to the inflow opening 7—through which the fluid F can enter the vortex chamber 8 .
  • the bypass 26 and the inflow opening 7 preferably (together) form the inlet or inlets into the vortex clamp 8.
  • the inflow opening 7 is preferably continuously fluidly connected to the vortex chamber 8, in particular without controllability of the (hydraulic) cross section.
  • the bypass 26 preferably has the controllable (hydraulic) cross section.
  • the inlet into the vortex chamber 8 has a (hydraulic) cross-section that can only be partially controlled.
  • the inflow opening 7 preferably opens into the vortex chamber 8 upstream of the bearing part 23, the blade part 21 and/or its blades 22 or on a side of the bearing part 23, the blade part 21 and/or its blades 22 facing away from the inlet of the rotor 9A through the inflow opening 7 fluid F entering the vortex chamber 8 on the bearing part 23, the blade part 21 and/or the blades 22.
  • fluid F escaping through the inflow opening 7 can act on the rotor 9 or the bearing part 23, in particular for driving the rotor 9 or the bearing part 23 contribute or influence the movement of the rotor 9 or the bearing part 23 .
  • the bypass 26 preferably opens into the vortex chamber 8 upstream of the bearing part 23, the blade part 21 and/or its blades 22 or on a side of the bearing part 23, the blade part 21 and/or its blades 22 facing away from the inlet of the rotor 9A the fluid F entering the vortex chamber 8 through the bypass 26, preferably in addition to the fluid F flowing into the vortex chamber 8 through the inflow opening 7, onto the bearing part 23, the blade part 21 and/or the blades 22.
  • the fluid F exiting through the bypass 26 act on the rotor 9 or the bearing part 23, in particular contributing to the drive of the rotor 9 or the bearing part 23 or influencing the movement of the rotor 9 or the bearing part 23.
  • the bypass 26 is preferably closed when the valve 27 is closed, so that when the valve 27 is closed, no fluid F can enter the vortex chamber 8 through the bypass 26 or when the valve 27 is closed, the fluid F can only enter the vortex chamber 8 through the inflow opening 7 .
  • Opening the valve 27 or releasing the bypass 26 preferably increases the hydraulic cross section through which the fluid F can enter the vortex chamber 8, because the hydraulic cross section consists in particular of the hydraulic cross section of the inflow opening 7 and the hydraulic cross section of the bypass 26.
  • the valve 27 is in particular a ball valve.
  • the valve 27 includes or is formed by a ball 27A and a spring 27B cooperating with the ball 27A.
  • the spring 27B is designed to hold the ball in the bypass 26 in such a way that the bypass 26 is closed or no fluid F can pass through the bypass 26 .
  • the ball 27A or the valve 27 is biased into a closed position by means of the spring 27B.
  • the spring 27B is preferably designed in such a way that when a certain fluid pressure is exceeded, the fluid pressure reduces the force with which the spring 27B presses the ball 27A biases to a closed position, such that the fluid F pushes the ball 27A towards the spring 27B and the bypass 26 is released.
  • the fluid pressure at which the valve 27 or the ball 27A releases the bypass 26 can be set by the design of the spring 27B, in particular by the selection of the spring constants.
  • the fluid pressure at which valve 27 opens or releases bypass 26 is preferably a few bars, for example at least 2 or more bars and/or at most 10 or 8 bars or less.
  • a bypass portion 25D of the insert 25 includes or forms the bypass 26 .
  • the bypass section 25D is preferably formed by a separate component.
  • the bypass section 25D is formed by two components lying against one another, with the bypass 26 being formed or arranged in particular between these two components.
  • the bypass 26 has an outlet direction 26A.
  • the outlet direction 26A is preferably the direction in which the fluid F passes through the bypass 26 or leaves the bypass 26 and/or enters the vortex chamber 8 .
  • the outlet direction 26A of the bypass 26 preferably deviates from the outlet direction 7B of the inflow opening 7 .
  • the outlet direction 26A is preferably inclined relative to the plane E running perpendicularly to the longitudinal axis L.
  • the outlet direction 26A of the bypass 26 is more inclined to a plane E perpendicular to the longitudinal axis L than the outlet direction 7B of the inflow opening 7 or the outlet direction 26A of the bypass 26 encloses a larger angle with this plane E than the outlet direction 7B of the inflow opening 7.
  • the smaller of the angles enclosed between the respective outlet direction 7B, 26A and the plane E is understood as the "angle enclosed between the plane E and the outlet direction 7B or 26A".
  • the outlet direction 7B of the inflow opening 7 runs perpendicular to the longitudinal axis L or parallel to the plane E or in the plane E. Accordingly, the angle enclosed between the plane E and the outlet direction 7B of the inflow opening 7 is preferably 0°.
  • the included angle between the outlet direction 26A of the bypass 26 and the plane E is in 4 indicated schematically.
  • the fluid F flowing through the bypass 26 into the vortex chamber 8 enters the vortex chamber 8 in a different direction or at a different angle (in particular in relation to the plane E) than the fluid F flowing through the inflow opening 7.
  • the flow of the fluid F in the vortex chamber 8 can be influenced or changed.
  • the bypass 26 serves in particular to prevent an increase in the speed of the rotor 9 or bearing part 12 above a limit value that is in particular predetermined or specifiable, or to limit the speed of the rotor 9 or bearing part 12 .
  • An increase in the speed above the limit value can occur in particular if the volume flow of the fluid F through the inflow opening 7 and/or the fluid pressure becomes too high. By releasing the bypass 26 when the fluid pressure is too high, the increase in the speed can be prevented or curbed.
  • each (imagined or real) particle of the fluid F can be divided into a Z component, referred to below as an axial component, a radial component 18 and a tangential component.
  • the axial component is parallel to the longitudinal axis L
  • the radial component 18 is radial to the longitudinal axis L
  • the tangential component is perpendicular to the axial component and the radial component 18, so that the components form a three-dimensional Cartesian coordinate system.
  • the rotation of the bearing part 12 or rotor 9 is in particular decisively influenced by the respective local tangential component of the fluid F or particle or determined. If the bypass 26 now has a different outlet direction than the inflow opening 7, the ratio between the axial component, the radial component 18 and the tangential component of the fluid F or the particles in the vortex chamber 8 is changed, so that an appropriate selection of the outlet direction prevents this in particular it can happen that the tangential component takes on too large a value. This can in turn prevent the - decisively determined by the tangential component - speed of the bearing part 12 is too high or a limit value of the speed is exceeded.
  • the rotor nozzle 1 or the insert 25 preferably has a plurality of bypasses 26 arranged offset in the circumferential direction on the insert 25 or the bypass section 25D.
  • the previous explanations regarding the bypass 26 and/or the outlet direction 26A preferably apply to each individual bypass 26.
  • the multiple bypasses 26 each have a (separate) pressure-controlled valve 27, with the valves 27 having at least two or more different threshold values for the pressure at which the respective bypass 26 is released by the respective valve 27. This enables more precise control or limitation of the speed of the rotor 9 and/or control or limitation of the speed of the rotor 9 over a larger speed range.
  • ten bypasses 26 are provided, each having a pressure-controlled valve 27, five of the valves 27 being designed to open at a pressure of 3 bar or to release the respective bypass 26 and five of the valves 27 being designed to do so To open the respective bypass 26 at a pressure of 10 bar.
  • the rotor 9 preferably has an inlet 9A for the fluid F to enter the rotor 9, an outlet 9B for the fluid F to exit the rotor 9, and a channel 28 for guiding the fluid F into the rotor 9 and from the inlet 9A, respectively the outlet 9B.
  • the inlet 9A and the outlet 9B are fluidically connected to one another by the channel 28 .
  • the inlet 9A preferably forms an opening of the channel 28 to the vortex chamber 8, through which the fluid F can enter the rotor 9 or channel 28 from the vortex chamber 8.
  • the outlet 9B preferably forms the outlet opening 6 and/or opens into the outlet opening 6.
  • channel 28 has a first, preferably straight, portion 28A and a second, preferably straight, portion 28B.
  • the direction of flow of the fluid F in the first section 28A is at least essentially opposite to the direction of flow of the fluid F in the second section 28B.
  • the directions of flow of the fluid F in the channel 28 are in figure 5 indicated by arrows.
  • the flow direction of the fluid F preferably points in a direction away from the outlet opening 6 or the rotor tip 11 and/or in a direction towards the rotor end 14 .
  • the flow direction of the fluid F preferably points in a direction facing away from the rotor end 14 and/or in a direction facing the rotor tip 11 or the outlet opening 6 .
  • the channel 28 is tortuous or has a turn or turn.
  • the first section 28A has the inlet 9A and/or the second section 28B has the outlet 9B.
  • the first section 28A and the second section 28B preferably run at least substantially parallel to a longitudinal axis of the rotor 9.
  • the inlet 9A is preferably arranged on a side of the first section 28A facing the outlet opening 6 or the rotor tip 11 .
  • At least the first section 28A serves as a “calming path”, so that the flow of the fluid F changes from a turbulent flow in the vortex chamber 8 to a laminar flow in the channel 28 or first section 28A.
  • An at least essentially laminar flow preferably prevails in the second section 28B or at least at the outlet opening 6 .
  • the first section 28A is preferably arranged further outside on the rotor 9 or at a greater distance from a longitudinal axis of the rotor 9 than the second section 28B.
  • the first section 28A surrounds the second section 28B.
  • the longitudinal axis of the rotor 9 can be congruent with the jet direction S.
  • the first section 28A is particularly preferably formed by a coaxial tube and/or the second section 28B is formed by a central tube.
  • the central tube and/or the coaxial tube is/are preferably arranged coaxially to the longitudinal axis of the rotor 9 .
  • the coaxial tube is particularly preferably arranged in a bell shape around the central tube.
  • the central tube or the second section 28B preferably opens at a first end 29 into the outlet opening 6 and at a second end 30 into the coaxial tube or the first section 28A.
  • the coaxial tube or second section 28B preferably extends from the inlet 9A to the second end 30 of the second section 28B or central tube.
  • the rotor 9 is thus preferably designed in such a way that the fluid F first enters the rotor 9 or the channel 28 on an outside through the inlet 9B.
  • the fluid F then initially flows in the direction of the rotor end 14 or in a direction away from or opposite to the rotor tip 11 and/or the outlet opening 6 .
  • the fluid F then passes from the first section 28A into the second section 28B, with the direction of flow of the fluid F being at least essentially reversed.
  • the fluid F then flows in the direction of the outlet opening 6 or the rotor tip 11.
  • the rotor nozzle 1 or the rotor 9 preferably has a nozzle 31 .
  • the nozzle 31 represents a constriction of the channel 28.
  • the nozzle 31 represents a portion of the second section 28B or the nozzle 31 adjoins the second section 28B.
  • the rotor 9 preferably has a nozzle insert 32 which has or forms the nozzle 31 .
  • the nozzle insert 32 is preferably a separate component.
  • the nozzle insert 32 is inserted into the central tube or fluidically connected to the central tube.
  • the first section 28A and/or the second section 28B preferably have a plurality of flow guides 33 which are separate from one another and run parallel to one another.
  • the flow properties in the channel 28 can be improved, in particular a linear and/or laminar flow can be generated or ensured in the channel 28 .
  • the bypass 26 preferably forms a channel or has a channel. It is further preferred here that the bypass 26 has a channel-shaped inlet to the valve 27 and/or a channel-shaped outlet from the valve 27 into the vortex chamber 8 .
  • the bypass 26 is preferably a branch.
  • the bypass 26 preferably branches off between the inlet and the inflow opening 7A.
  • the bypass 26 forms a branch of a tract opening into the inflow opening 7 or the openings 7A or of a structure which conducts the fluid F and extends between the inlet 25B and the inflow opening 7 or the openings 7A.
  • the bypass 26 is therefore in particular a branch that can be controlled by the valve 27 or can be opened and closed as a function of pressure, which directs fluid F entering the inlet 25B through an opening realized separately from the inflow opening 7 into the turbulence chamber 8 .

Landscapes

  • Nozzles (AREA)

Claims (15)

  1. Buse de rotor (1), en particulier pour nettoyeur haute pression (2), avec un boîtier de buse (5) qui présente une chambre de turbulence (8) entre une ouverture d'entrée (7) et une ouverture de sortie (6), un rotor (9) incliné par rapport à un axe longitudinal (L) du boîtier de buse (5) étant disposé dans le boîtier de buse (5), le rotor (9) étant supporté de manière mobile sur un côté tourné vers l'ouverture de sortie (6) et étant monté, sur un côté opposé à l'ouverture de sortie (6), sur une partie de palier (12) pouvant tourner autour de l'axe longitudinal (L), la partie de palier (12) pouvant être mise en rotation par le fluide (F) pénétrant dans la chambre de turbulence (8) par l'ouverture d'entrée (7),
    la buse de rotor (1) présentant, en plus de l'ouverture d'entrée (7), une dérivation (26) et une vanne commandée par pression (27) qui libère automatiquement la dérivation (26) en fonction d'une pression du fluide (F), de sorte que le fluide (F) peut s'écouler dans la chambre de turbulence (8) par l'ouverture d'entrée (7) et en plus par la dérivation (26).
  2. Buse de rotor selon la revendication 1, caractérisée en ce que la dérivation (26) présente une direction de sortie (26A) qui diffère d'une direction de sortie (7B) de l'ouverture d'entrée (7).
  3. Buse de rotor selon la revendication 2, caractérisée en ce qu'un angle compris entre la direction de sortie (26A) de la dérivation (26) et un plan (E) perpendiculaire à l'axe longitudinal (L) est supérieur à un angle compris entre ce plan (E) et la direction de sortie de l'ouverture d'entrée (7).
  4. Buse de rotor selon l'une des revendications précédentes, caractérisée en ce que la buse de rotor (1) présente plusieurs dérivations (26) avec chacune une vanne (27) commandée par pression, qui libère automatiquement la dérivation (26) respective en fonction d'une pression du fluide (F), les vannes (27) présentant au moins deux valeurs de seuil différentes pour la pression à laquelle la dérivation (26) respective est libérée par la vanne (27) respective.
  5. Buse de rotor selon l'une des revendications précédentes, caractérisée en ce que la dérivation (26) et l'ouverture d'entrée (7) forment des entrées dans la chambre de turbulence (8).
  6. Buse de rotor selon l'une des revendications précédentes, caractérisée en ce que la dérivation (26) est une ouverture prévue en plus de l'ouverture d'entrée (7), à travers laquelle le fluide (F) peut entrer dans la chambre de turbulence (8).
  7. Buse de rotor selon l'une des revendications précédentes, caractérisée en ce que, lorsque la vanne (27) est ouverte et que la dérivation (26) est libérée, le fluide (F) peut s'écouler dans la chambre de turbulence (8) par l'ouverture d'entrée (7) et en outre par la dérivation (26).
  8. Buse de rotor selon l'une des revendications précédentes, caractérisée en ce que l'ouverture d'entrée (7) est reliée fluidiquement à la chambre de turbulence (8) de manière ininterrompue et/ou sans possibilité de commande de la section hydraulique.
  9. Buse de rotor selon l'une des revendications précédentes, caractérisée en ce que la dérivation (26) débouche en amont de la partie de palier (12), d'une partie d'aube (21) et/ou de ses aubes (22) dans la chambre de turbulence (8).
  10. Buse de rotor selon la revendication 9, caractérisée en ce que le fluide (F) entrant dans la chambre de turbulence (8) par la dérivation (26), en plus du fluide (F) entrant dans la chambre de turbulence (8) par l'ouverture d'entrée (7), agit sur la partie de palier (12), la partie d'aube (21) et/ou les aubes (22).
  11. Buse de rotor selon l'une des revendications précédentes, caractérisée en ce que, lorsque la vanne (27) est fermée, la dérivation (26) est fermée, de sorte que, lorsque la vanne (27) est fermée, aucun fluide (F) ne peut entrer dans la chambre de turbulence (8) par la dérivation (26) et/ou, lorsque la vanne (27) est fermée, le fluide (F) ne peut entrer dans la chambre de turbulence (8) que par l'ouverture d'entrée (7).
  12. Buse de rotor selon l'une des revendications précédentes, caractérisée en ce que l'ouverture de la vanne (27) augmente la section hydraulique par laquelle le fluide (F) peut entrer dans la chambre de turbulence (8), la section hydraulique se composant de la section hydraulique de l'ouverture d'entrée (7) et de la section hydraulique de la dérivation (26).
  13. Buse de rotor selon l'une des revendications précédentes, caractérisée en ce que la vanne (27) comprend une bille (27A) et un ressort (27B) coopérant avec la bille (27A), la bille (27A) et/ou la vanne (27) étant sollicitée(s) vers une position fermée par le ressort (27B).
  14. Buse de rotor selon l'une des revendications précédentes, caractérisée en ce que la pression de fluide à laquelle la vanne (27) s'ouvre et/ou libère la dérivation (26) est d'au moins 2 bars et/ou d'au plus 10 bars.
  15. Buse de rotor selon l'une des revendications précédentes, caractérisée en ce que la vitesse de rotation de la partie de palier et/ou du rotor est déterminée par la rotation du fluide dans un plan perpendiculaire à l'axe longitudinal et la direction de sortie (26A) de la dérivation (26) diffère d'une direction de sortie de l'ouverture d'entrée (7) de telle sorte que les conditions d'écoulement dans la chambre de turbulence sont ainsi modifiées et/ou influencées.
EP21166588.0A 2020-04-09 2021-04-01 Buse à rotor Active EP3892382B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020002230 2020-04-09
DE102020118175.2A DE102020118175A1 (de) 2020-04-09 2020-07-09 Rotordüse

Publications (2)

Publication Number Publication Date
EP3892382A1 EP3892382A1 (fr) 2021-10-13
EP3892382B1 true EP3892382B1 (fr) 2022-08-31

Family

ID=75362429

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Application Number Title Priority Date Filing Date
EP21166588.0A Active EP3892382B1 (fr) 2020-04-09 2021-04-01 Buse à rotor

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EP (1) EP3892382B1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3817825A1 (de) * 1988-05-26 1989-11-30 Suttner Gmbh & Co Kg Punktstrahlduese fuer hochdruckreingiungsgeraete
EP1072317A3 (fr) 1999-07-27 2002-07-03 Wolfgang Suttner Buse rotative pour un appareil de nettoyage à haute pression et procédé de fabrication d'une buse
DE10036970A1 (de) * 2000-07-28 2002-02-07 Anton Jaeger Rotordüse
DE102005037858A1 (de) * 2005-08-10 2007-02-15 Jäger, Anton Rotationsdüse
US7118051B1 (en) * 2005-08-11 2006-10-10 Anton Jager Rotor nozzle
DE102006019078B4 (de) 2006-04-25 2021-11-11 Anton Jäger Rotordüse
EP3888796B1 (fr) * 2018-11-05 2023-08-30 P.A. S.p.A. Ensemble de buse à jet rotatif pour dispositifs de nettoyage sous pression

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