EP2310147B1 - Dispositif et procédé de formation d'un jet pulsé d'un fluide liquide - Google Patents

Dispositif et procédé de formation d'un jet pulsé d'un fluide liquide Download PDF

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Publication number
EP2310147B1
EP2310147B1 EP20090779249 EP09779249A EP2310147B1 EP 2310147 B1 EP2310147 B1 EP 2310147B1 EP 20090779249 EP20090779249 EP 20090779249 EP 09779249 A EP09779249 A EP 09779249A EP 2310147 B1 EP2310147 B1 EP 2310147B1
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EP
European Patent Office
Prior art keywords
fluid
pulsed jet
workpiece
pulses
pulsed
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.)
Not-in-force
Application number
EP20090779249
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German (de)
English (en)
Other versions
EP2310147A1 (fr
Inventor
Egon KÄSKE
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.)
Ecoclean GmbH
Original Assignee
Duerr Ecoclean GmbH
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Filing date
Publication date
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Priority to PL09779249T priority Critical patent/PL2310147T3/pl
Publication of EP2310147A1 publication Critical patent/EP2310147A1/fr
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Publication of EP2310147B1 publication Critical patent/EP2310147B1/fr
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Classifications

    • 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
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/0318—Processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems

Definitions

  • the present invention relates to an apparatus for generating a pulsed jet of liquid fluid comprising a fluid inlet, a fluid outlet, and a barrier member disposed between the fluid inlet and the fluid outlet that cyclically closes and releases a fluid passageway between the fluid inlet and the fluid outlet.
  • Such a device is for example from the WO 03/036144 A1 known.
  • the GB 2 112 303 A discloses a device according to the preamble of claim 1.
  • the present invention has for its object to provide an apparatus for generating a pulsed jet of liquid fluid, which allows an improved mechanical action on an impinged with the pulsed beam object.
  • the device comprises at least one bypass, through which a fluid fluid can be supplied to the fluid outlet during a closing phase of the blocking element.
  • the device comprises an adjusting device for adjusting a volume flow of a bypass fluid flow flowing through the bypass.
  • the device comprises a control device for controlling the volume flow of the bypass fluid flow flowing through the bypass.
  • the device comprises a regulating device for regulating the volume flow of the bypass fluid flow flowing through the bypass.
  • the device comprises an adjusting device, a control device and / or a regulating device for setting, controlling or regulating a pressure of the bypass fluid flow flowing through the bypass.
  • the device comprises an adjusting device for adjusting a volume flow of a pulse fluid flow flowing through the fluid passage.
  • the device comprises a control device for controlling the volume flow of the pulse fluid flow flowing through the fluid passage.
  • the device comprises a regulating device for regulating the volume flow of the pulse fluid flow flowing through the fluid passage.
  • a closing time, an open time and / or an opening frequency of the blocking element can be adjusted, controlled and / or regulated.
  • An opening frequency in this specification and in the appended claims means the number of open phases of the blocking element per unit of time.
  • the device comprises an adjusting device, a control device and / or a regulating device for setting, controlling or regulating a pressure of the pulse fluid flow flowing through the fluid passage.
  • a total fluid flow flowing through the device can be divided into a pulse fluid flow flowing through the fluid passage and a bypass fluid flow flowing through the bypass such that a volume flow of the bypass gas flowing through the bypass Fluid flow is at most about 10% of a volume flow of the total fluid flow.
  • the blocking element is designed such that it can be operated with an opening frequency of at least approximately 2 Hz.
  • the blocking element is designed to be rotatable.
  • the opening frequency is then twice as large as the rotational frequency of the blocking element.
  • the device comprises a rotary drive for the blocking element, in particular with adjustable, controllable and / or controllable speed.
  • such a rotary drive is designed as a pneumatic, hydraulic or electrical rotary drive.
  • the blocking element is designed such that it can be operated with an opening frequency of at most approximately 200 Hz.
  • the device comprises a pump for driving a flow of a fluid through the device.
  • the fluid flowing through the device can be acted upon by a pressure of at least approximately 3 bar.
  • the fluid flowing through the device can be acted upon by a pressure of at most approximately 300 bar.
  • a fluid connection between the fluid inlet and the fluid outlet is formed by means of the bypass.
  • the device comprises a damping element for reducing pressure peaks occurring in the closing phase of the blocking element in the device for generating a pulsed jet of liquid fluid.
  • the damping element is arranged downstream of a pump in a flow direction in which the fluid flows through the device. In this way, pressure peaks generated by the pump can be easily damped.
  • the damping element is at least partially filled with a compressible fluid in an operating state of the device. This can be done in the device occurring pressure peaks are particularly easily reduced by means of the damping element.
  • the damping element is at least partially filled with a gaseous fluid in an operating state of the device.
  • the gas pressure and the amount of gas then the damping of the damping element can be adjusted specifically.
  • the damping element is at least partially formed of an elastic material.
  • damping of the damping element essentially takes place by the compression of gas contained therein and that at a pressure above the limit pressure, for example to avoid possible damage to the device, a deformation of an elastic region of the damping element he follows.
  • the device comprises at least two fluid outlets and at least two blocking elements, wherein a first blocking element cyclically closes and releases a first fluid passage during operation of the device, so that at a first fluid outlet a first pulsed jet of a liquid fluid can be generated, and wherein during operation of the device, a second blocking element cyclically closes and releases a second fluid passage, so that at a second fluid outlet, a second pulsed jet of a liquid fluid can be generated.
  • a first blocking element cyclically closes and releases a first fluid passage during operation of the device, so that at a first fluid outlet a first pulsed jet of a liquid fluid can be generated
  • a second blocking element cyclically closes and releases a second fluid passage, so that at a second fluid outlet, a second pulsed jet of a liquid fluid can be generated.
  • a simple construction of the device is ensured, in particular, if liquid of the same type is used for all the jets. Alternatively, however, it can also be provided that liquid fluids of different types are used for different jets.
  • the device is operable such that the closing and open phases of the first blocking element are offset in time from the closing and open phases of the second blocking element.
  • the device is operable so that the closing phases of the first locking element coincide in time substantially with the open phases of the second locking element and the open phases of the first locking element substantially coincide with the closing phases of the second locking element.
  • the device is operable so that there is no temporal overlap between the open phases of the first blocking element and the open phases of the second blocking element.
  • a time offset of the closing and open phases of the first locking element against the closing and open phases of the second locking element is particularly easy to implement, when the at least two locking elements are coupled together.
  • the device comprises a common drive for driving at least two blocking elements or at least two drives synchronized with one another for driving at least two blocking elements.
  • the at least two blocking elements are preferably coupled to the common drive, that during operation of the device, the closing and open phases of the first blocking element against the closing and open phases of the second locking element are offset.
  • the device at least two drives for the at least two blocking elements, in particular for each blocking element a separate
  • the at least two drives are preferably synchronized with each other so that during operation of the device, the closing and open phases of the first locking element are offset in time against the closing and open phases of the second locking element.
  • the device comprises at least two bypasses, wherein a liquid fluid can be supplied to the first fluid outlet by a first bypass during a closing phase of the first blocking element and wherein a liquid fluid can be supplied to the second fluid outlet by a second bypass during a closing phase of the second blocking element.
  • a further object of the present invention is to provide a method for producing a pulsed jet of a liquid fluid, which enables an improved mechanical action on an object impinged by the pulsed beam, in particular on a workpiece.
  • the method of exposing a workpiece to a pulsed jet of liquid fluid has the features and advantages described above in connection with the inventive device.
  • pressure peaks occurring during the cyclical interruptions of the fluid flow through the fluid passage are reduced by means of a damping element.
  • the pulses of a first pulsed beam are offset in time with respect to the pulses of a second pulsed beam.
  • the time of the exit of the pulses of a first pulsed jet at the first fluid outlet is offset in time with respect to the time of the exit of the pulses of a second pulsed jet at a second fluid outlet.
  • the workpiece is applied alternately with pulses of a first pulsed beam and with pulses of a second pulsed beam.
  • a pulse frequency of the first pulsed beam corresponds at least approximately to a pulse frequency of the second pulsed beam.
  • the workpiece is acted upon by a first pulsed beam from a first direction and a second pulsed beam from a different direction from the first direction, the second direction with liquid fluid.
  • the outlet direction of the first pulsed jet from the first fluid outlet is at least approximately opposite to the outlet direction of the second pulsed jet from the second fluid outlet.
  • a cavity of the workpiece is applied alternately to the pulses of a first pulsed jet of liquid fluid flowing through a first access opening of the cavity and to the pulses of a second pulsed jet of liquid fluid flowing through a second access opening of the cavity becomes.
  • the first pulsed beam is directed onto the first access opening and the second pulsed beam is directed onto the second access opening.
  • a particularly secure loading of the cavity of the workpiece with fluid is ensured in particular when the first fluid outlet is introduced through the first access opening and the second fluid outlet through the second access opening into the cavity.
  • a region of a cavity of the workpiece is acted upon by the pulses of a first pulsed jet of a liquid fluid and with the pulses of a second pulsed jet of a liquid fluid such that the fluid from the first pulsed jet and the Fluid from the second pulsed beam to flow through the region of the cavity of the workpiece in different directions.
  • the fluid from the first pulsed beam and the fluid from the second pulsed beam flow through the region of the cavity of the workpiece in opposite directions.
  • a particularly advantageous loading of the region of the cavity of the workpiece with fluid is ensured, in particular, when the region of the cavity of the workpiece is alternately acted upon by pulses of the first pulsed jet of a liquid fluid and with pulses of the second pulsed jet of a liquid fluid.
  • the device according to the invention is particularly suitable for cleaning a workpiece, the method according to the invention preferably being carried out.
  • the fluid flowing through the device preferably comprises a cleaning fluid.
  • the device according to the invention for cleaning cavities of workpieces, such as cylinder heads and crankcases, since the workpieces are acted upon during closing phases of the blocking element with fluid and no cleaning effect of the pulsed jet diminishing air can get into the workpiece.
  • the workpiece can basically be surrounded by a gas or gas mixture or by a liquid, for example a cleaning liquid.
  • provision may be made for the workpiece to be cleaned in a low-pressure atmosphere (below the atmospheric pressure).
  • FIG. 1 An in Fig. 1 1, shown schematically as 100 as a whole, for generating a pulsed jet of liquid fluid (hereinafter referred to as "jet generating device") is formed as a cleaning device 102 for cleaning a workpiece 104.
  • jet generating device for generating a pulsed jet of liquid fluid
  • the cleaning device 102 comprises a fluid container 106, a pump 108, a pulse valve 110, a bypass 112 and a nozzle 114.
  • the fluid container 106 is filled, for example, with a liquid cleaning fluid and serves as a reservoir for flowing through the cleaning device 102 fluid.
  • the fluid container 106 is in fluid communication with the pump 108 via a suction line 107.
  • a fluid inlet opening 109 of the suction line 107 forms a fluid inlet 116 of the cleaning device 102.
  • the pump 108 is further in fluid communication with a branch 120 located downstream of the pump 108 via a supply line 121.
  • the total fluid flow flowing through the cleaning device 102 can be divided into a first partial fluid flow and a second partial fluid flow.
  • the first partial fluid flow of the total fluid flow flowing through the cleaning device 102 can be supplied to a fluid passage 122, which forms a first fluid connection between the fluid inlet 116 and a fluid outlet 124 arranged on the nozzle 114.
  • the first partial fluid flow flowing through the fluid passage 122 is referred to below as the pulse fluid flow.
  • the second partial fluid flow of the total fluid flow flowing through the cleaning device 102 can be supplied to the bypass 112, which forms a second fluid connection between the fluid inlet 116 and the fluid outlet 124.
  • bypass fluid flow The second partial fluid flow flowing through the bypass 112 is referred to below as the bypass fluid flow.
  • the bypass fluid stream flowing through the bypass 112 is connected to the fluid flow passing through the fluid passage 122 through a junction 126 located downstream of the fluid passage 122 merge into a total fluid flow.
  • the total fluid flow can be fed to the fluid outlet 124 arranged on the nozzle 114.
  • the cleaning device 102 comprises a nozzle supply line 125, which forms a fluid connection between the junction 126 and the fluid outlet 124.
  • the cleaning device 102 comprises an adjustment device 128 of the bypass 112, which is arranged, for example, on the bypass 112.
  • the adjusting device 128 of the bypass 112 is designed, for example, as an adjusting screw in order to be able to easily set a passage cross section of the bypass 112 and thus the volume flow of the bypass fluid flow.
  • the cleaning device 102 comprises an adjusting device 130 of the fluid passage 122, which is arranged, for example, downstream of the branch 120 and upstream of the pulse valve 110.
  • the adjusting device 130 of the fluid passage 122 is designed, for example, as an adjusting screw in order to be able to easily set a passage cross-section of the fluid passage 122 and thus the volume flow of the pulse fluid flow.
  • FIG. 2 and 3 are schematic sectional drawings of the pulse valve 110 shown during a closing phase in which the flowing through the fluid passage 122 pulse fluid flow is interrupted.
  • pulse valve 110 The basic structure of such a pulse valve 110 is for example from the WO 03/036144 A1 to which extent to which reference is made and whose contents are made part of this description.
  • the pulse valve 110 comprises a housing 132, a blocking element 134 which is rotatably mounted in the housing 132 and a rotary drive 136, for example designed as an electric motor, for driving a rotational movement of the blocking element 134 (see FIG Fig. 3 ).
  • the blocking element 134 is designed as a substantially cylindrical shaft 138 and, for example, by means of at least one plain bearing bush 140 rotatably mounted about an axis of rotation 142 in the housing 132 of the pulse valve 110.
  • the blocking element 134 has a cylindrical lateral surface 144 coaxial with the axis of rotation 142.
  • two diametrically opposite recesses 146 are formed, each of which is delimited by a cylinder shell portion-shaped boundary surface 148, the cylinder axis 150 perpendicular to the axis of rotation 142, perpendicular to the radial direction of the locking element 134 and tangential to the lateral surface 144 of the locking element 134th runs, and which along an edge 152 on the lateral surface 144 of the locking element 134 open (see in particular Fig. 3 ).
  • the depressions 146 are formed in the blocking element 134 in that from the initially fully cylindrical blocking element 134, two cylinder-segment-shaped segments are milled out with the mutually parallel cylinder axes 150, wherein the cylinder radius is smaller than the radius of the blocking element 134, so that between the depressions 146 a land area 154 stops (see in particular Fig. 3 ).
  • the pulse valve 110 has a pulse valve inlet 156 and a pulse valve outlet 158.
  • Pulse valve inlet 156 and pulse valve outlet 158 are connected by a fluid passage 160.
  • the blocking element 134 is arranged in the fluid passage 160 such that the fluid connection between the pulse valve inlet 156 and the Pulsventilauslass 158 by rotation of the locking member 134 is cyclically produced and separable.
  • the above-described cleaning device 102 functions as follows:
  • the pressure is at least approximately 3 bar.
  • the pressure should not be higher than about 300 bar.
  • the total fluid flow flowing through the cleaning device 102 passes through the supply line 121 to the branch 120.
  • the volume flow of the pulse fluid flow flowing through the fluid passage 122 is set.
  • the adjusting device 128 of the bypass 112 By means of the adjusting device 128 of the bypass 112, the volume flow of the flowing through the bypass 112 bypass fluid flow is adjusted.
  • the volume flow of the bypass fluid flow flowing through the bypass 112 is substantially constant over time.
  • the pulse fluid flow flowing through the fluid passage 122 is cyclically interrupted by means of the pulse valve 110.
  • An open time, a closing time and / or an opening frequency of the blocking element 134 of the pulse valve 110 is set, for example, on the rotary drive 136.
  • an opening frequency of about 2 Hz to about 200 Hz is set, wherein a rotational speed of the blocking element 134 is preferably constant over time.
  • the temporally substantially constant bypass fluid flow and the pulsating pulse fluid flow are combined to form the total fluid flow.
  • the workpiece 104 to be cleaned by means of the cleaning device 102 is arranged downstream of the nozzle 114 and spaced therefrom.
  • the workpiece 104 includes, for example, a cavity 162 to be cleaned, which is supplied with the fluid from the fluid outlet 124.
  • the cavity 162 of the workpiece 104 is always at least applied to the bypass fluid flow flowing through the bypass 112, the cavity 162 of the workpiece 104 is always filled with liquid fluid.
  • the cleaning of the cavity 162 of the workpiece 104 from impurities, for example metal shavings, by means of the cleaning device 102 is thereby improved.
  • An in Fig. 5 illustrated second embodiment of a beam generating device 100 differs from that in the Fig. 1 to 4 illustrated first embodiment in that the beam generating device 100 comprises a damping element 164.
  • damping element 164 By means of the damping element 164, pressure peaks which arise during closing phases of the blocking element 134 can be damped.
  • the damping element 164 comprises a, for example substantially tubular, container 166, which is at least partially filled with a gas, for example nitrogen, in an operating state of the jet-generating device 100.
  • a gas for example nitrogen
  • the damping of the damping element 164 is adjustable.
  • the reservoir 166 is located downstream of the pump 108 and upstream of the manifold 120 and is in fluid communication with the supply line 121 of the jet generating device 100.
  • the above-described second embodiment of the jet generating apparatus 100 with the damping member 164 functions as follows.
  • the pressure in the jet generating device 100 decreases, so that the fluid from the container 166 of the damping element 164 flows back into the supply line 121 of the jet generating device 100 and the gas arranged in the container 166 of the damping element 164 relaxed.
  • One in the Fig. 6 and 7 illustrated third embodiment of a beam generating device 100 differs from the in Fig. 5 illustrated second embodiment in that the container 166 of the damping element 164 is formed of an elastic material.
  • the pressure in the jet generating device 100 decreases, so that the fluid arranged in the container 166 of the damping element 164 flows back into the supply line 121 of the jet generating device 100 and the container 166 of the damping element 164 returns to a relaxation state.
  • An in Fig. 8 illustrated fourth embodiment of a beam generating device 100 differs from that in the Fig. 1 to 4 illustrated first embodiment in that in addition to the already described pulsed beam (hereinafter referred to as "first pulsed beam") at least a second pulsed beam of a liquid fluid can be generated.
  • first pulsed beam the already described pulsed beam
  • the jet-generating device 100 comprises a branch 168 which is arranged in the supply line 121 between the pump 108 and the branch 120 and the fluid flow downstream of the pump 108 onto a first supply line 121a for the first pulsed jet of liquid fluid and to a second supply line 121b for the second pulsed jet of liquid fluid.
  • the jet-generating device 100 downstream of the first supply line 121a and downstream of the second supply line 121b preferably comprises in each case those components which in the in the Fig. 1 to 4 illustrated first embodiment downstream of the feed line 121 are arranged.
  • the jet generating device 100 thus comprises a second fluid passage 170 corresponding to the first fluid passage 122, which can be interrupted, in particular cyclically, by means of a second pulse valve 172 corresponding to the first pulse valve 110, a second nozzle 174 corresponding to the first nozzle 114, at which a first fluid outlet 124 corresponding second fluid outlet 176 is arranged, and a first bypass 112 corresponding to the second bypass 178, by means of which the second fluid outlet 176, fluid can be supplied even during closing phases of the second pulse valve 172.
  • the jet generating device 100 comprises an adjustment device 180 of the second bypass 178 corresponding to the setting device 128 of the first bypass 112, which is arranged on the second bypass 178.
  • the jet generating device 100 comprises a setting device 182 of the second fluid passage 170 corresponding to the setting device 130 of the first fluid passage 122, which is arranged on the second fluid passage 170.
  • the components arranged downstream of the first supply line 121a and the components of the jet generating device 100 arranged downstream of the second supply line 121b are identical in construction and function to those in FIG Fig. 1 shown downstream of the supply line 121 and with reference to the above Fig. 2 to 4 explained in more detail components of the first embodiment of the beam generating device 100, to the above description of which reference is made.
  • a particularly preferred use of the fourth embodiment of the jet-generating device 100 results from the possibility of applying the second pulsed jet emerging from the second fluid outlet 176 to the workpiece 104 in addition to the first pulsed jet emerging at the first fluid outlet 124.
  • this allows the workpiece 104, for example from different directions, to be acted upon alternately with pulses of the first pulsed beam and with pulses of the second pulsed beam.
  • a cavity 162 of the workpiece 104 which is accessible through at least two access openings, can be acted upon with liquid fluid.
  • the first nozzle 114 is preferably positioned relative to the workpiece 104 so that the fluid of the first pulsed jet flowing out of the first fluid outlet 124 flows through a first access opening 184 of the cavity 162 of the workpiece 104 into the cavity 162 of the workpiece 104 (see FIG Fig. 8 ).
  • the second nozzle 174 is preferably positioned relative to the workpiece 104 such that the fluid of the second pulsed jet flowing out of the second fluid outlet 176 flows through a second access opening 186 of the cavity 162 of the workpiece 104 into the cavity 162 of the workpiece 104 (see FIG Fig. 8 ).
  • the fluid of the pulses of the first pulsed jet of liquid fluid and the fluid of the pulses of the second pulsed jet of liquid fluid flow alternately and inwardly approximately equidistant from both access ports 184, 186 of cavity 162 different directions.
  • impurities for example, in the processing of the workpiece 104 resulting chips can be loosened and easily removed from the cavity 162 of the workpiece 104, in particular washed out, can be.
  • the pulse frequency and the flow speed of the first pulsed jet and a time offset between the exit times of the pulses of the first pulsed jet at the first fluid outlet 124 and the exit times of the pulses of the second pulsed jet at the second fluid outlet 176 are desirably chosen such that the pressure maxima of the pulses of the first pulsed beam reach one end of the cavity 162 of the workpiece 104, in particular the second access opening 186 of the cavity 162 of the workpiece 104, before the pressure maxima of the pulses of the second pulsed beam through the second access opening 186 of the cavity 162 of the workpiece 104 into the cavity 162 of the workpiece 104 arrive.
  • the time offset between the exit times of the pulses of the first pulsed jet at the first fluid outlet 124 and the exit times of the pulses of the second pulsed jet at the second fluid outlet 176 is preferably the time lag between the exit times of the pulses of the second pulsed jet at the second fluid outlet 176 and the exit times If the pulses of the first pulsed beam at the first fluid outlet 124 correspond, in such a case, the pressure maxima of the pulses of the second pulsed beam will conveniently reach one end of the cavity 162 of the workpiece 104, in particular the first access opening 184 of the cavity 162 of the workpiece 104, before the Pressure maxima of the pulses of the first pulsed beam through the first access opening 184 of the cavity 162 of the workpiece 104 into the cavity 162 of the workpiece 104 pass.
  • the pulse frequency is always chosen so that the duration of the pressure maxima of the pulses through the cavity 162 of the workpiece 104 is small compared to the period of the pulse sequence (reciprocal of the pulse frequency).
  • the pulses of the first pulsed beam and the pulses of the second pulsed beam are prevented from hindering each other, thus making it difficult for the impurities to escape from the cavity 162 of the workpiece 104.
  • a pulse frequency of, for example, about 70 Hz, a flow of, for example, 5 l / s and nozzles with a diameter of, for example, 6 mm can be selected.
  • Reliable compliance with a desired time offset between the exit times of the pulses of the first pulsed jet at the first fluid outlet 124 and the exit times of the pulses of the second pulsed jet at the second fluid outlet 176 is ensured in particular when the rotary drive 136 of the first blocking element 134 of the first pulse valve 110 is synchronized with a (not shown) rotary drive of the second locking element 192 of the second pulse valve 172.
  • FIGS Fig. 5 to 7 In order to dampen pressure peaks within the jet generating device 100, in the fourth embodiment of the jet generating device 100, one or more of the ones shown in FIGS Fig. 5 to 7 be shown 164 provided damping elements.
  • the fourth embodiment of the jet generating device 100 is the same in structure and function as in FIG Fig. 1 to 4 illustrated first embodiment, so that reference is made to the above description in this respect.
  • An in Fig. 9 illustrated fifth embodiment of the beam generating device 100 differs from that in Fig. 8 illustrated fourth embodiment in that the first pulse valve 110 and the second pulse valve 172 have a common rotary drive 190.
  • the first blocking element 134 of the first pulse valve 110 and a second blocking element 192 of the second pulse valve 172 are mechanically coupled to each other, so that no separate control for timing the pulses of the first pulsed beam to the pulses of the second pulsed beam is necessary ,
  • the mechanical coupling can take place, for example, by means of a drive belt 196, which is in operative connection with the common rotary drive 190, the first blocking element 134 and the second blocking element 192, so that a rotational movement from the common rotary drive 190 to the first blocking element 134 and the second blocking element 192 is transferable.
  • the first pulse valve 110 and the second pulse valve 172 differ from the in Fig. 3 illustrated pulse valve 110 of the first embodiment of the jet generating device 100, characterized in that the first locking element 134 and the second locking element 192 instead of a separate rotary drive 136 each have a (not shown) extension to which the drive belt 196 engages.
  • a particular time offset between the pulses of the first pulsed beam and the pulses of the second pulsed beam may be fixed by adjusting a rotational orientation of the first stop 134 and, independently thereof, a rotational orientation of the second stop 192 , Due to the mechanical coupling by means of the drive belt 196, the rotational orientations of the first locking element 134 and of the second locking element 192 are fixed relative to one another.
  • the first locking member 134 and the second locking member 192 rotate with same frequency while maintaining the previously set Drehauscardi relative to each other.
  • an offset between the exit times of the pulses of the first pulsed jet at the first fluid outlet 124 and the exit times of the pulses of the second pulsed jet at the second fluid outlet 176 can be freely selected.
  • this offset is freely selectable between about zero and, for example approximately the period of the pulse train (corresponding to half of the reciprocal of the rotational frequency of the locking elements 134, 192).
  • a separate rotary drive for the second blocking element 192 of the second pulse valve 172 is dispensable by the common rotary drive 190.
  • alternately emitting pulses of the first pulsed beam and pulses of the second pulsed beam is possible, in particular, when the first blocking element 134 and the second blocking element 192 are coupled to the common rotary drive 190 such that the first land region 154 of the first locking element 134 is then aligned substantially parallel to the flow direction 118, when a second web portion 194 of the second locking member 192 is aligned substantially perpendicular to the flow direction 118 (see Fig. 9 ).
  • the angular difference between the Drehauscardi the first locking element 134 and the Drehauscardioplasty of the second locking element 192 is then 90 °.
  • the in Fig. 9 illustrated fifth embodiment of the jet generating device 100 in structure and function with the in Fig. 8 4, the above description of which is incorporated herein by reference.
  • illustrated fifth embodiment of the jet generating device 100 may be provided that the beam generating device 100 one or more of the in the Fig. 5 to 7 illustrated damping elements 164 includes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Surgical Instruments (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (14)

  1. Dispositif destiné à générer un jet pulsé d'un fluide liquide, comprenant une entrée de fluide (116), une sortie de fluide (124, 176) et un élément d'arrêt (134, 192) disposé entre l'entrée de fluide (116) et la sortie de fluide (124, 176), lequel obture et libère cycliquement un passage de fluide (122, 170) entre l'entrée de fluide (116) et la sortie de fluide (124, 176),
    caractérisé
    en ce que le dispositif (100) comprend au moins une dérivation (112, 178) par laquelle un fluide liquide peut être conduit vers la sortie de fluide (124, 176) même pendant une phase de fermeture de l'élément d'arrêt (134, 192).
  2. Dispositif selon la revendication 1, caractérisé en ce que le dispositif (100) comprend un dispositif de réglage (128, 180) pour le réglage d'un débit volumique d'un flux de fluide de dérivation s'écoulant par la dérivation (112, 178), et/ou un dispositif de réglage (130, 182) pour le réglage d'un débit volumique d'un flux de fluide pulsé s'écoulant par le passage de fluide (122, 170).
  3. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce que le dispositif (100) comprend un élément d'amortissement (164) pour la diminution des crêtes de pression apparaissant dans le dispositif (100) lors de la phase de fermeture de l'élément d'arrêt (134, 192), ledit élément d'amortissement (164) étant au moins partiellement rempli d'un fluide comprimable dans un état de service du dispositif (100).
  4. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce que le dispositif (100) comprend un élément d'amortissement (164) pour la diminution des crêtes de pression apparaissant dans le dispositif (100) lors de la phase de fermeture de l'élément d'arrêt (134, 192), ledit élément d'amortissement (164) étant au moins partiellement formé d'un matériau élastique.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le dispositif (100) comprend au moins deux sorties de fluide (124, 176) et au moins deux éléments d'arrêt (134, 192), un premier élément d'arrêt (134) obturant et libérant cycliquement un premier passage de fluide (122), de manière à permettre la génération d'un premier jet pulsé d'un fluide liquide sur une première sortie de fluide (124), et un deuxième élément d'arrêt (192) obturant et libérant cycliquement un deuxième passage de fluide (170), de manière à permettre la génération d'un deuxième jet pulsé d'un fluide liquide sur une deuxième sortie de fluide (176).
  6. Dispositif selon la revendication 5, caractérisé en ce que le dispositif (100) peut être commandé de manière à décaler temporellement les phases de fermeture et d'ouverture du premier élément d'arrêt (134) par rapport aux phases de fermeture et d'ouverture du deuxième élément d'arrêt (192).
  7. Dispositif selon l'une des revendications 5 ou 6, caractérisé en ce que le dispositif (100) comprend un entraînement (190) commun pour l'entraînement d'au moins deux éléments d'arrêt (134, 192), ou au moins deux entraînements synchronisés entre eux pour l'entraînement d'au moins deux éléments d'arrêt (134, 192).
  8. Procédé de sollicitation d'une pièce (104) par un jet pulsé d'un fluide liquide, comprenant les étapes de procédé suivantes :
    - génération d'impulsions du jet pulsé par interruption cyclique d'un flux de fluide au travers d'un passage de fluide (122, 170) ;
    - sollicitation de la pièce (104) par les pulsations du jet pulsé ;
    - sollicitation de la pièce (104) y compris pendant les interruptions cycliques du flux de fluide au travers du passage de fluide (122, 170), par un flux de dérivation du fluide.
  9. Procédé selon la revendication 8, caractérisé en ce que la pièce (104) est sollicitée par au moins un autre jet pulsé d'un fluide liquide.
  10. Procédé selon la revendication 9, caractérisé en ce que les impulsions d'un premier jet pulsé sont temporellement décalées par rapport aux impulsions d'un deuxième jet pulsé.
  11. Procédé selon la revendication 10, caractérisé en ce que la pièce (104) est sollicitée en alternance par des impulsions d'un premier jet pulsé et par des impulsions d'un deuxième jet pulsé.
  12. Procédé selon la revendication 11, caractérisé en ce qu'une cavité (162) de la pièce (104) est sollicitée en alternance par des impulsions d'un premier jet pulsé d'un fluide liquide s'écoulant au travers d'une première ouverture d'accès (184) de la cavité (162) et par des impulsions d'un deuxième jet pulsé d'un fluide liquide s'écoulant au travers d'une deuxième ouverture d'accès (186) de la cavité (162).
  13. Procédé selon l'une des revendications 9 à 12, caractérisé en ce qu'une zone (188) d'une cavité (162) de la pièce (104) est sollicitée par les impulsions d'un premier jet pulsé d'un fluide liquide et par les impulsions d'un deuxième jet pulsé d'un fluide liquide de telle manière que le fluide du premier jet pulsé et le fluide du deuxième jet pulsé traversent la zone (188) de la cavité (162) de la pièce (104) dans des direction différentes.
  14. Utilisation du dispositif (100) selon l'une des revendications 1 à 7 pour le nettoyage d'une pièce (104), en particulier au moyen d'un procédé selon une des revendications 8 à 13.
EP20090779249 2008-08-09 2009-04-02 Dispositif et procédé de formation d'un jet pulsé d'un fluide liquide Not-in-force EP2310147B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09779249T PL2310147T3 (pl) 2008-08-09 2009-04-02 Urządzenie i sposób wytwarzania pulsacyjnego strumienia ciekłego płynu

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810037247 DE102008037247A1 (de) 2008-08-09 2008-08-09 Vorrichtung und Verfahren zum Erzeugen eines gepulsten Strahls eines flüssigen Fluids
PCT/EP2009/053968 WO2010018007A1 (fr) 2008-08-09 2009-04-02 Dispositif et procédé de formation d'un jet pulsé d'un fluide liquide

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EP2310147A1 EP2310147A1 (fr) 2011-04-20
EP2310147B1 true EP2310147B1 (fr) 2011-11-30

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US (2) US20110168216A1 (fr)
EP (1) EP2310147B1 (fr)
CN (1) CN102112242B (fr)
AT (1) ATE535319T1 (fr)
BR (1) BRPI0917451A2 (fr)
CA (1) CA2733151C (fr)
DE (1) DE102008037247A1 (fr)
MX (1) MX2011001488A (fr)
PL (1) PL2310147T3 (fr)
WO (1) WO2010018007A1 (fr)

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DE102008037247A1 (de) 2008-08-09 2010-02-11 Dürr Ecoclean GmbH Vorrichtung und Verfahren zum Erzeugen eines gepulsten Strahls eines flüssigen Fluids
DE102010000478A1 (de) * 2010-02-19 2011-08-25 Hammelmann Maschinenfabrik GmbH, 59302 Verfahren zur Funktionsunterbrechung eines Schneidstrahls sowie Vorrichtung zur Durchführung des Verfahrens
US20160199885A1 (en) * 2013-08-14 2016-07-14 United Technologies Corporation Honeycomb removal
DE102014226432A1 (de) * 2014-12-18 2016-06-23 Robert Bosch Gmbh Verfahren zum Flüssigkeitsstrahl-Entschichten von Oberflächen
CN114850144A (zh) * 2022-04-28 2022-08-05 南通海狮船舶机械有限公司 一种船舶管路冲洗脉冲发生装置

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US3590775A (en) * 1968-02-26 1971-07-06 Stuart W Barr Glue spray system
GB2109271B (en) * 1981-11-25 1985-05-22 Vauldale Engineering Limited Pulsating liquid jet apparatus
US4422882A (en) * 1981-12-29 1983-12-27 The Babcock & Wilcox Company Pulsed liquid jet-type cleaning of highly heated surfaces
CA1172244A (fr) * 1981-12-29 1984-08-07 Charles W. Hammond Methode et dispositif de decrassage de surfaces soumises a des temperatures tres elevees
DE3626719A1 (de) * 1986-08-07 1988-02-11 Fehr Gmbh Dr Periodisch wirkender fluessigkeitsstrahl-erzeuger
US5397054A (en) * 1992-08-26 1995-03-14 Dolmar Gmbh Pressure jet cleaning appliance
DE19528033A1 (de) * 1995-07-31 1997-02-06 Martin Dipl Ing Graser Vorrichtung zur Erzeugung von schnellen gepulsten Hochdruckflüssigkeitsstrahlen
KR970053126A (ko) * 1995-12-30 1997-07-29 김광호 물반점 방지를 위한 반도체 장치의 세정 방법 및 장치
DE19934612A1 (de) * 1999-07-23 2001-01-25 Abb Alstom Power Ch Ag Verfahren zur aktiven Unterdrückung von strömungsmechanischen Instabilitäten in einem Verbrennungssystem sowie Verbrennungssystem zur Durchführung des Verfahrens
DE19946479A1 (de) 1999-09-28 2001-03-29 Voith Paper Patent Gmbh Verfahren und Vorrichtung zum Besprühen einer bewegten Faserstoffbahn
DE29924880U1 (de) * 1999-09-28 2006-06-29 Voith Paper Patent Gmbh Vorrichtung zum Besprühen einer bewegten Faserstoffbahn
DE10151864B4 (de) * 2001-10-24 2006-01-26 Boll & Kirch Filterbau Gmbh Verfahren zum Betrieb eines Filters für Flüssigkeiten und System zur Durchführung des Verfahrens
EP1854557A2 (fr) * 2006-05-08 2007-11-14 Suttner GmbH Ensemble de vanne
US7559489B2 (en) * 2006-08-23 2009-07-14 Valiant Corporation High-pressure pulse nozzle assembly
DE102008037247A1 (de) 2008-08-09 2010-02-11 Dürr Ecoclean GmbH Vorrichtung und Verfahren zum Erzeugen eines gepulsten Strahls eines flüssigen Fluids

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Publication number Publication date
ATE535319T1 (de) 2011-12-15
WO2010018007A1 (fr) 2010-02-18
US20110168216A1 (en) 2011-07-14
CN102112242B (zh) 2013-11-13
CN102112242A (zh) 2011-06-29
DE102008037247A1 (de) 2010-02-11
US8702872B2 (en) 2014-04-22
CA2733151A1 (fr) 2010-02-18
US20130037064A1 (en) 2013-02-14
BRPI0917451A2 (pt) 2015-12-01
MX2011001488A (es) 2011-03-30
PL2310147T3 (pl) 2012-04-30
CA2733151C (fr) 2013-09-10
EP2310147A1 (fr) 2011-04-20

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