EP3615223A1 - Fluidische baugruppe - Google Patents
Fluidische baugruppeInfo
- Publication number
- EP3615223A1 EP3615223A1 EP18719783.5A EP18719783A EP3615223A1 EP 3615223 A1 EP3615223 A1 EP 3615223A1 EP 18719783 A EP18719783 A EP 18719783A EP 3615223 A1 EP3615223 A1 EP 3615223A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluidic
- fluid flow
- flow
- fluid
- deflecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/08—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape of pulsating nature, e.g. delivering liquid in successive separate quantities ; Fluidic oscillators
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4278—Nozzles
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
- B60S1/48—Liquid supply therefor
- B60S1/52—Arrangement of nozzles; Liquid spreading means
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/088—Liquid supply arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/008—Arrangement of fuel passages inside of injectors
Definitions
- the invention relates to a fluidic assembly according to the preamble of claim 1.
- the fluidic assembly is provided for generating a moving fluid jet.
- nozzles are known for generating a moving fluid jet, which are set in motion by means of a kinematics or a (movable) device.
- the kinematics or (mobile) device comprises moving components that are exposed to high wear. The costs associated with manufacturing and maintenance are correspondingly high.
- due to the moving components a relatively large overall space is required.
- fluidic components are also known which generate a fluid jet oscillating in a plane.
- the fluidic components do not include any movable components that serve to generate a motile fluid flow. As a result, they do not have the disadvantages resulting from the moving components compared to the nozzles mentioned at the outset.
- the fluid flow which can be generated with the previously known fluidic components moves primarily in a plane (oscillation plane) and not in a three-dimensional space.
- three-dimensional movement of the fluid jet may increase its cleaning performance in some applications, such as dishwashers and washing machines.
- a so-called divergent component of the component is increased perpendicular to the oscillation plane, as is known, for example, from US 7014131 B1, US Pat. No. 7,134,609 B1 or US 2006/0065765 A1.
- the divergent portion of the fluidic component is located downstream of the outlet of the component.
- the present invention has for its object to provide a device which is adapted to produce a compact, three-dimensionally moving fluid jet, wherein the device has a high reliability and a correspondingly lower maintenance.
- the fluidic assembly comprises a fluidic component having a flow chamber.
- the flow chamber can be flowed through by a fluid flow, which enters the flow chamber through an inlet opening of the flow chamber and exits the flow chamber through an outlet opening of the flow chamber.
- at least one means for forming an oscillation of the fluid flow is provided.
- the means for forming an oscillation may, for example, be at least one bypass duct. Alternatively, other means for forming an oscillation of the fluid flow may be provided.
- This fluidic component predetermines a basic flow direction of the fluid flow for the fluidic assembly.
- the fluid may be a gaseous, liquid or multiphase flowable medium which may also be particulate.
- the fluid entering the flow chamber through the inlet port may be pressurized from 0.0002 to 2500 bar (relative to ambient pressure).
- the pressure can be between 0.005 and 1800 bar.
- Particularly preferred is a pressure range between 0.05 and 1100 bar.
- white goods household appliances, especially washing machines and dishwashers
- a pressure in the range of 0.001 bar to 6 bar is advantageous.
- a pressure range of 0, 1 bar to about 14 bar is advantageous.
- the fluidic assembly is characterized in that a device for deflecting the oscillating fluid flow, which from the outlet opening of the fluidic component outlet, is provided, wherein the deflection of the oscillating fluid flow is temporally variable.
- the deflection is achieved by transferring kinetic energy to the fluid stream exiting the fluidic component.
- a time-varying deflection means that, for example, the extent and / or the direction of the deflection change / change over time. The temporal change of the diversion can be made in particular periodically.
- the device for deflecting preferably acts on the fluid flow only at or downstream of the outlet opening of the fluidic component. In this way, it is achieved that a fluid jet emerges from the fluidic assembly which temporally changes its direction of movement in three dimensions.
- a fluid jet can be generated, which has a circular, elliptical or approximately rectangular cross-section or radiates a Lissajous figure.
- a three-dimensional movement profile of the fluid jet is advantageous, inter alia, for mixing processes and cleaning applications.
- the device for deflecting the fluid flow provides time-variable means for deflecting the fluid flow. This means serves to transfer energy to the fluid flow, which results in a deflection of the fluid flow.
- the amount of the agent and / or the direction from which the agent is provided may be time-varying.
- the means for redirecting can be provided in a pulse-like manner.
- the means for deflecting the fluid flow may in particular comprise a fluid.
- the fluid may be identical to the fluid to be diverted from the fluidic component or different from the fluid to be diverted. In the latter case, different fluids can be mixed together in this way, without additional Standswegnern must be provided.
- the fluid that is provided by the device for deflection also oscillates. This can be achieved that the resulting fluid flow in two (or more levels) oscillates and so three-dimensional forms.
- the device for deflection as a means for deflection provides a fluid
- the device for deflection before a side flow direction for the fluidic assembly while the fluidic component specifies a basic flow direction of the fluid flow for the fluidic assembly.
- the device for deflection can be referred to as a secondary current generator and the fluidic component as a main current generator.
- the device for deflecting the fluid flow may alternatively comprise a cooling or heating device.
- Other alternative devices include piezoelectric elements, shape memory alloys, or other so-called smart materials. Intelligent materials are understood to mean materials that react independently to changing environmental conditions without external regulation.
- energy transmission (deflection) devices for arc generation or plasma generators are conceivable.
- the fluidic assembly preferably has a divergent surface downstream of the outlet that faces the energy transfer device. Thus, the fluid jet can suck on this divergent surface and thus maintain the deflection.
- the device for deflecting the fluid flow at least one so-called Zero Mass Flux element, such. B. a speaker.
- Zero Mass Flux elements are elements that transmit a momentum without producing a mass flow, or a mass flow whose time average is zero.
- a loudspeaker can generate a sound impulse for deflecting the fluid jet.
- these alternative deflecting devices may increase the space required and increase the power consumption, and may include moving elements if desired.
- the device for deflecting the fluid flow is arranged such that the means for deflecting the fluid flow acts on the oscillating fluid flow in such a way that the oscillating fluid flow is deflected out of its oscillation plane (variable in time). It can thus be achieved that the fluid flow emerging from the outlet opening and oscillating in one plane now moves in a three-dimensional space.
- the device for deflecting the fluid flow may for example be arranged such that the means for deflecting the fluid flow acts substantially along an axis or a plane on the fluid flow, which is an angle greater than 0 °, with the Oszillationsebene the oscillating fluid flow includes.
- the angle can, for example, between 30 ° and 150 °.
- an angle of substantially 90 ° is an angle of substantially 90 °. If the deflection of the fluid flow by the means for deflecting in a plane changes periodically, then a fluid jet can be generated which oscillates or pulses in two different planes, namely the oscillation plane which is predetermined by the fluidic component and the plane which is determined by the fluidic component Device or the means for deflection is specified. Provided that not only the extent of the deflection, but also the direction from which the means for the deflection acts on the fluid flow, changes over time, oscillates or pulsates the resulting fluid jet in more than two levels. By suitable modulation of the extent of the deflection and the direction from which the means for the deflection acts on the fluid flow, an arbitrary course of the fluid flow can be generated.
- the means for deflection along an axis (in a plane) from one direction, from the opposite direction (or from a direction other than one direction) or from both directions acts on the fluid flow.
- the means for deflection acts on the fluid flow from both directions, it can be provided in particular that the intensity with which the agent acts on the fluid flow from both directions at any given time is of different magnitude.
- the agent may alternately act on the fluid flow from one direction and the other (opposite) direction.
- the intensity from each direction can oscillate between 0% and 100% in each case, the phases of the oscillation being shifted for the two directions.
- the device for deflecting the fluid flow is arranged such that the means for deflecting the fluid flow acts directly on the outlet opening of the flow chamber of the fluidic component to the fluid flow. Immediately at the outlet opening, the oscillation of the fluid flow is completely formed and not yet disturbed by external influences (geometries, pressure).
- the device for deflecting the fluid flow from the means for deflecting the fluid flow can be flowed through.
- the device for deflecting the fluid flow may comprise a fluidic component.
- the means for deflection may be in particular a fluid here.
- the fluidic assembly comprises two fluidic components. On the one hand, the first fluidic component, whose fluid flow is to be deflected, and on the other hand, the second fluidic component, the part of Device for deflection is. Since, in particular, the first fluidic component predefines the fluid flow direction, this can also be referred to as the main flow generator, while the second fluidic component can be referred to as a secondary flow generator.
- the oscillation plane of the first fluidic component and the oscillation plane of the second fluidic component may include an angle that is greater than 0 °. This angle can be between 30 ° and 150 °. Particularly preferred is an angle of substantially 90 °.
- the first and the second fluidic component may be identical or different in size, shape and / or functional principle.
- the device for deflecting may comprise a separator in order to divide the means of deflection into at least two branches.
- the separator may be arranged downstream of the second fluidic component.
- the fluid exiting from this second fluidic component may flow into the separator and be split into at least two branch streams.
- the separator may have an inlet opening and at least two outlet openings.
- the outlet openings of the separator can be arranged in a plane which lies in or parallel to the oscillation plane of the second fluidic component arranged upstream.
- the outlet openings may be spaced apart from one another such that they are alternately flowed through by the oscillating fluid flow exiting from the second fluidic component.
- the separator can convert the oscillating fluid flow of the second fluidic component into a binary (pulsating) flow signal.
- the cross-sectional area of each of the at least two outlet openings is larger than the cross-sectional area of the inlet opening.
- the separator (downstream) can open into at least two supply lines, each having at least one inlet opening and at least one outlet opening.
- each supply line comprises exactly one inlet opening and exactly one outlet opening.
- the number of supply lines may correspond to the number of outlet openings of the separator, each outlet opening of the separator being associated with a supply line.
- the The speed of the means for deflection in the supply lines in the time average as low as possible, so that the means for deflection in the supply lines at a speed between 0 and the maximum speed or between a negative maximum speed and a positive maximum speed pulses. In the latter case, the means for deflecting alternately flows out of the supply lines and back into the supply lines.
- the at least two supply lines can be directed to the oscillating fluid flow (of the first fluidic component) to be deflected, the at least two supply lines (or the outlet openings of the supply lines) on either side of the oscillation plane of the oscillating fluid flow (of the first fluid path) fluidic component) are directed to the oscillating fluid flow (of the first fluidic component).
- the at least two supply lines can be arranged such that they provide the means for deflection on both sides of the oscillation plane of the oscillating fluid flow (of the first fluidic component) directed onto the oscillating fluid flow (of the first fluidic component).
- the dimensions and geometries of the at least two supply lines may be selected such that the at least two supply lines (or the outlet openings of the supply lines) extend to the outlet opening of the (first) fluidic component, from which the fluid flow to be diverted emerges.
- the at least two supply lines (or the outlet openings of the supply lines) at the outlet opening of the (first) fluidic component can each extend at least over the entire width of the outlet opening of the (first) fluidic component.
- the width of the outlet opening of the (first) fluidic component is defined parallel to the oscillation plane of the exiting fluid flow to be deflected, the width being substantially perpendicular to the main propagation direction of the fluid flow, which moves as intended from the inlet opening to the outlet opening (of the first fluidic component), extends.
- the at least two supply lines provide the means for the deflection over the entire width of the outlet opening of the (first) fluidic component.
- the at least two supply lines can provide the means for the deflection only over a portion of the width of the outlet opening of the (first) fluidic component or over the entire width of the outlet opening of the (first) fluidic component and beyond.
- the invention further relates to a fluidic component (sewer component) according to the preamble of claim 19.
- the sewer component comprises a flow chamber, which of a Fluid flow can be flowed through which enters the flow chamber through an inlet opening of the flow chamber and emerges from the flow chamber through an outlet opening of the flow chamber, wherein the fluidic component has at least one means for forming an oscillation of the fluid flow at the outlet opening.
- the cup component is characterized in that the at least one means for forming an oscillation comprises an odd number of bypass channels, which is greater than 1. With the cup component, a three-dimensionally moving fluid flow can be generated. Advantageous embodiments are specified in the subclaims.
- the invention further relates to an injection system, a fluid mixing system, a fluid distribution system, a cooling system, a fire extinguishing system and a cleaning device, each comprising the fluidic assembly according to the invention and / or the cup component according to the invention.
- the injection system is provided for injecting a fuel into an internal combustion engine, which is used for example in motor vehicles.
- an embodiment of the fluidic assembly can be used which comprises two fluidic components: a first fluidic component, the fluid flow is changed over time by the device for deflection, and a second fluidic component as a device for deflection.
- the first and the second fluidic component can be flowed through by different fluids, in particular by a fuel (first fluidic component) on the one hand and by air (second fluidic component) on the other hand.
- the cleaning device is in particular a dishwasher, a washing machine, an industrial cleaning system or a high-pressure cleaner.
- the fluid distribution system may in particular be a sprinkler system, a lawn sprinkler or a crop protection distribution system.
- the fluid distribution system can also be designed as a cooling system or fire extinguishing system. Due to the dynamic movement of the exiting fluid jet, the cooling performance or the fire-extinguishing performance of such a cooling system or fire extinguishing system can be massively increased.
- FIG. 1 is an external view of a fluidic assembly according to a
- Embodiment of the invention a wire representation of the fluidic assembly of Figure 1 for visualization of the inner functional geometry; a view of the inner functional geometry of Figure 2 as a negative; an enlarged view of the section A of Figure 3; five snapshots (Figures I to V) of the fluid flow in the fluidic assembly of Figures 1 to 4 to illustrate the dynamics of the emerging from the fluid assembly fluid jet; a sectional view of the fluidic assembly of Figure 1 along the plane Si; an enlarged view of the detail B of Figure 6; a sectional view of the fluidic assembly of Figure 1 along the plane S2; an enlarged view of the section C of Figure 8; a sectional view (Figure I) of the fluidic component of Figure 8, which is used in the fluidic assembly of Figures 1 to 9 as a main flow sensor, and a sectional view ( Figure II) of a fluidic component that can be used in the fluidic assembly alternatively as the main current generator ; an enlarged sectional view ( Figure I) of the separator of the fluidic assembly of Figure 6 and a sectional
- FIG. 14 is an enlarged view of the separator and the supply lines of the fluidic assembly of Fig. 13; two snapshots ( Figures I and II) of the oscillating beam emerging from the fluidic assembly of Figures 1-9, the snapshots showing the oscillating beam at the same time from two different directions of view;
- FIG. 16 shows a side view of the inner functional geometry of a cup component according to an embodiment as a negative
- FIG. 17 is a plan view of the cup member of FIG. 16; FIG.
- FIG. 18 is another side view of the cup member of FIG. 16; FIG.
- FIG. 19 is a perspective view of the cup member of FIG. 16; FIG.
- Fig. 20 is a sectional view of the cup member of Figure 16 along the line
- Fig. 21 is a sectional view of the cup member of Figure 18 along the line
- Embodiment for visualizing the inner function geometry Embodiment for visualizing the inner function geometry.
- FIG. 1 shows schematically the outer view of a fluidic assembly 1 according to an embodiment of the invention.
- Figure 2 shows the fluidic assembly 1 of Figure 1, wherein the inner functional geometry of this embodiment is visualized as a wire representation.
- the fluidic assembly 1 comprises two inlet openings 2a, 2b and one outlet opening 3.
- the outlet opening 3 is fluidically connected to each of the two inlet openings 2a, 2b.
- the first inlet opening 2a is fluidly connected to the outlet opening 3 via a first conduit 21a and a first fluidic geometry I
- the second inlet opening 2b is fluidically connected to the outlet opening 3 via a second conduit 21b and a second fluidic geometry II.
- the fluidic partial geometries I and II are arranged downstream of the lines 21 a and 21 b.
- the fluidic partial geometries I and II provide the function of the fluidic assembly 1 Relevant cavity.
- the lines 21 a and 21 b may be formed arbitrarily.
- only one inlet opening can be provided, followed by a line which divides downstream into two branches in order to feed the two partial geometries I and II.
- the fluidic assembly 1 can be traversed by a fluid which enters the fluidic assembly 1 via the inlet openings 2a, 2b and exits the fluidic assembly 1 via the outlet opening 3.
- a fluid flow is generated by the interaction of the two partial geometries I and II, which performs a three-dimensional movement in space at the outlet opening 3.
- the fluid may be liquid, gaseous or multiphase and optionally also be charged with solid particles.
- different fluids can be supplied to the two partial geometries I and II.
- the first fluidic partial geometry I is shown in particular in FIGS. 3, 4, 8 and 9, and the second fluidic partial geometry II in particular in FIGS. 3, 6 and 7.
- FIG. 3 shows the relative arrangement of the two partial geometries I and II relative to one another (for the embodiment of the fluidic assembly 1 of Figures 1 to 9).
- the fluidic partial geometries I and II are fluidically connected to one another at the outlet opening 3 of the fluidic assembly 1.
- the first fluidic part geometry I comprises a first fluidic component 4 (main flow generator) and generates a fluid flow oscillating in an oscillation plane.
- the second fluidic part geometry II forms a device for deflecting the fluid flow of the first fluidic component 4 and comprises a second fluidic component 5 (secondary flow sensor), which is followed downstream by a separator 6, followed by two supply lines 7, into which the separator 6 opens.
- a second fluidic component 5 secondary flow sensor
- the main flow generator (the first fluidic component) 4 comprises a flow chamber 400, which can be traversed by a fluid flow which enters the flow chamber 400 through an inlet opening 401 and exits through an outlet opening 402 from the flow chamber 400 of the main flow generator 4.
- the centers of the inlet opening 401 and the outlet opening 402 lie on an axis X4, which defines the main flow direction of the fluid within the first fluidic component 4.
- the flow chamber 400 includes a main flow channel 403 and two bypass channels (feedback channels) 404.
- the bypass channels 404 are provided as means for forming an oscillation of the fluid flow.
- the bypass channels 404 and the main flow channel 403 are arranged substantially in a plane, wherein the Main flow channel 403 between the two bypass channels 404 is arranged.
- a fluid flow is generated by means of the two bypass channels 403, which oscillates in an oscillation plane which is parallel to the plane in which the two bypass channels 404 and the main flow channel 403 are arranged.
- the fluid flow oscillates between two maximum deflections which define the oscillation angle ⁇ of the fluid flow of the main flow generator 4.
- the oscillation angle ⁇ of the main current generator 4 can be ⁇ 1 ° to ⁇ 89 °, wherein the oscillation angle ⁇ is defined here in the oscillation plane with respect to the axis X 4 of the main current generator 4.
- the oscillation angle ⁇ of the main current generator 4 is preferably ⁇ 2.5 ° to ⁇ 70 °.
- the oscillation angle ⁇ of the main current generator is 4 ⁇ 2.5 ° to ⁇ 60 °.
- the oscillation angle ⁇ is adjustable depending on the application of the fluidic assembly 1.
- the oscillation angle ⁇ is mainly influenced by the geometry of the skin current generator 4.
- other fluidic device types may also be used as the main flow transmitter 4, for example, those which generate an oscillating fluid jet by means of colliding fluid jets or otherwise (without bypass channels). It is only essential that the main current generator 4 generates a reciprocating, ie oscillating fluid jet.
- the secondary current generator (the second fluidic component) 5 corresponds to the principle of operation of the main flow sensor 4.
- the secondary flow sensor 5 ( Figures 6 and 12) comprises a flow chamber 500, which is traversed by a fluid flow, which enters the flow chamber 500 through an inlet opening 501 and through a Outlet opening 502 exits the flow chamber 500.
- the centers of the inlet opening 501 and the outlet opening 502 lie on an axis Xs, which predefines the main flow direction within the second fluidic component 5.
- the flow chamber 500 includes a main flow channel 503 and two bypass channels (feedback channels) 504.
- the bypass channels 504 are provided as means for forming an oscillation of the fluid flow.
- the bypass ducts 504 and the main flow duct 503 are arranged substantially in one plane, the main duct 503 being arranged between the two bypass ducts 504.
- a fluid flow is generated by means of the two bypass channels 503, which oscillates in an oscillation plane which is parallel to the plane in which the two bypass channels 504 and the main flow channel 503 are arranged.
- the fluid flow oscillates between two maximum deflections which define the oscillation angle ⁇ of the fluid flow of the secondary flow sensor 5.
- the oscillation angle ⁇ of the secondary current generator 5 can ⁇ 0.25 ° to ⁇ 85 °, wherein the oscillation angle ⁇ is defined here in the oscillation plane with respect to the axis Xs of the secondary current generator 5.
- the oscillation angle ⁇ of the secondary current generator 4 is ⁇ 1 ° to ⁇ 70 °.
- the oscillation angle ⁇ of the secondary current generator 4 ⁇ 2.5 ° to ⁇ 50 °.
- different fluidic device types can be used as a secondary current generator.
- the so-called feedback-free fluidic components may be used or components which generate an oscillating flow by means of colliding jets or by interacting vortices or recirculation regions within the component.
- the oscillation plane of the main current generator 4 and the oscillation plane of the secondary current generator 5 enclose an angle of substantially 90 ° with each other.
- the main flow channel 403 of the main current generator 4 and the main flow channel 503 of the secondary current generator 5 have in the embodiment of Figure 3 slightly different shapes. Alternatively, they can also be shaped the same. In principle, therefore, identical or different fluidic components can be used as the main current generator 4 and as a secondary current generator 5.
- the secondary current generator 5 and the main current generator 4 are arranged coaxially with one another. This means that the axis X 4 and the axis Xs are aligned coaxially.
- the axis X * and the axis Xs may also be aligned collinearly (parallel) or approximately parallel to one another. Other relative arrangements of the axes X * and Xs are possible.
- the axes X * and Xs include an angle of 90 °.
- the separator 6 (FIGS. 3 and 6) is arranged downstream of the second fluidic component (of the secondary flow transmitter) 5 and can be flowed through by the fluid flow emerging from the secondary flow transmitter 5.
- the separator 6 has an inlet opening 601 and two outlet openings 602, wherein the inlet opening 601 of the separator 6 corresponds to the outlet opening 502 of the secondary flow sensor 5.
- the outlet openings 602 of the separator 6 are arranged in a plane corresponding to the oscillation plane of the secondary current generator 5.
- the fluid flow exiting from the secondary flow sensor 5 oscillates with the oscillation angle ⁇ between two maximum deflections.
- the supply lines 7 can be traversed by the pulsating fluid jets.
- the supply lines 7 each have an inlet opening 701 and an outlet opening 702.
- the inlet opening 701 of each supply line 7 corresponds to an outlet opening 602 of the separator 6.
- the fluid jets then flow in pulses through the outlet openings 702 of the supply lines 7 from the second fluidic part geometry II to interact with the fluid jet emerging from the outlet opening 402 of the main flow sensor 4 ,
- Figure 4 shows an enlarged view of the section A of Figure 3.
- the main current generator 4 and the supply lines 7 are shown.
- the outlet openings 702 of the supply lines 7 and the outlet opening 402 of the main current generator 4 each have a rectangular cross-section.
- the cross-section may alternatively have the shape of an oval, trapezium, triangle, a rhombus, a polygon or a mixed shape.
- the rectangular cross-sectional area of the outlet opening 402 of the main flow sensor 4 is determined by the width bex and the depth ⁇ of the outlet opening 402 (see FIGS. 7 and 9).
- the width bex extends parallel to the oscillation plane of the main current generator 4 and perpendicular to the axis X 4 of the main current generator 4, while the depth ⁇ perpendicular to the oscillation plane of the main current generator 4 and perpendicular to the axis X 4 extends.
- the outlet opening 3 of the fluidic assembly 1 also has a rectangular cross-sectional area.
- the rectangular cross-sectional area of the outlet opening 3 of the fluidic assembly 1 is determined in this embodiment by the width BEX of the outlet opening 402 of the skin current generator 4 and by the distance between the two outlet openings 702 from each other. This distance corresponds to the depth tex of the outlet opening 402 of the main current generator 4 (see FIG. 7).
- the outlet opening 3 of the fluidic assembly 1 and the outlet opening 402 of the main current generator 4 are the same size.
- the outlet port 3 of the fluidic assembly 1 may be larger or smaller than the outlet port 402 of the mainstream transmitter 4.
- the outlet width bsx of the fluidic assembly 1 may be 0.005 mm to 80 mm.
- a width bex of 0.05 mm to 45 mm is preferred. Particularly preferred is a width bex between 0, 1 mm and 25 mm.
- the outlet depth tex of the fluidic assembly 1 lies in the same value ranges as the outlet width bsx, wherein the outlet depth tex and the outlet width bex can vary in size within the mentioned ranges of values.
- the outlet openings 702 of the supply lines 7 also each have a rectangular cross-sectional area.
- the rectangular cross-sectional areas of the outlet openings 702 are the same size and shaped in this embodiment.
- the size of each cross-sectional area is determined by the height h 70 2 of the outlet opening 702 and by the outlet width bsx of the outlet opening 702 (FIGS. 7 and 9).
- the outlet width bsx of the outlet openings 702 of the supply lines 7 corresponds to the outlet width bsx of the outlet opening 402 of the main flow transmitter 4.
- the outlet width bsx of the outlet openings 702 of the supply lines 7 extends parallel to the oscillation plane of the main flow generator 4 and perpendicular to the axis X 4 .
- the height h 70 2 of the outlet openings 702 of the supply lines 7 extends parallel to the oscillation plane of the main current generator 4 and parallel to the axis XA.
- the fluid of the secondary flow sensor 5 (FIG. 5) flows in a pulsed manner through the outlet openings 702 and is directed onto the fluid flow of the main flow generator 4 on both sides of the oscillation plane of the main flow generator 4.
- the velocity of the fluid at the outlet ports 702 preferably oscillates between a maximum velocity and 0, or more preferably between two maximum velocities of different sign. In the latter case, the fluid flows alternately out of the outlet openings 702 of the supply lines 7 and back into the supply lines 7 by forming a transient, alternately unstable flow.
- FIG. 5 shows, in five partial images I to V, a simulation of five staggered flow situations for a fluid flow, which flows through the fluidic assembly 1 from FIG. 3 and exits therefrom.
- the fluidic partial geometries I and II are filled in the simulation with water at a temperature of 25 ° C.
- the velocity of the fluid flow within the fluidic assembly 1 and on the projection surface 8 is normalized to the value 1.
- the fluid flow is colored darker in Figure 5, the higher its speed.
- the speed and pressure of the fluid flow hardly affect the operability of the fluidic assembly in the illustrated embodiment. So does the fluidic assembly 1 for very low input pressures of a few mbar up to several hundred bar, such. B. for the range of 0.002 bar to 2500 bar.
- the pressure information is relative to the ambient pressure.
- the velocity of the fluid flow 24, 25 in the main flow channels 403, 503 of the main flow transmitter 4 and the sub flow transmitter 5 influences the oscillation frequency of the fluid flows 24, 25 in the oscillation planes of the main flow generator 4 and the side flow sensor 5.
- the exiting fluid flow 20 is deflected in different spatial directions and thus wandered three-dimensionally in space.
- the path of movement of the exiting fluid flow 20 can have very different shapes on the projection surface 8.
- the fluid flow 20 can strip off a rectangle or an oval line by line or quasi-chicane or the path of a standing and / or rotating eight.
- the kinematics of the exiting fluid flow 20 is influenced by the oscillation frequency and the oscillation angle ⁇ of the fluid flow of the main flow transmitter 4 and by the pulsation frequency of the fluid flow of the secondary flow transmitter 5 in combination with the separator 6.
- the homogeneity and / or the shape (round, oval, almost triangular, polygonal or rectangular projection surfaces and mixed forms thereof) of the exiting fluid flow 20 can be influenced.
- the combination of the dynamically changing oscillation angle ⁇ and ß different movement tracks of the fluid flow can be generated.
- the angle at which the fluid stream 20 exits the fluidic assembly 1 can be determined by impulse addition of the fluid flow 24 of the main flow generator 4 and the fluid flows 27 in the supply lines 7.
- the main flow sensor 4 and the supply lines 7 (here in particular the outlet openings 702 and the angle ⁇ (FIG. 7)) can be adapted for different technical applications.
- the depth of the component Hauptromgebers 4 upstream of the outlet opening 402 is denoted by t. 4
- the component depth t 4 is defined perpendicular to the oscillation plane of the main current generator. 4
- the component depth t 4 of the main rotor generator 4 may be constant (as in the embodiment of FIGS. 6 and 7) or may be tapered or enlarged downstream in the region of the outlet opening 402 ( ⁇ ).
- the velocity of the fluid flow can be increased or decreased at a constant mass flow, whereby the oscillation angle ß of the secondary flow sensor 5 influenced can be.
- the influence of the momentum transfer of the fluid streams in the supply lines 7 to the fluid flow of the main current generator 4 can change.
- the oscillation angle ⁇ can be adjusted by varying the component depth of the main current generator 4.
- the depth U of the main current generator 4 may be in the range between 0.005 mm and 90 mm.
- a preferred depth t 4 is 0.04 mm to 50 mm.
- a particularly preferred depth t 4 is in the range between 0.1 mm and 30 mm.
- the height h 70 2 of the outlet openings 702 determines the length of the portion of the fluid flow of the main flow sensor 4 along the axis X 4 , which interacts with the emerging from the supply lines 7 fluid flow of the secondary flow sensor 5.
- the height h 7 02 is dependent on the oscillation angle ß of the secondary flow sensor 5 and of the desired momentum transfer of the fluid flow of the secondary flow sensor 5 to the fluid flow of the main current generator 4 adjustable.
- the height h 70 2 can be between 0.01 mm to 35 mm.
- a height h 70 2 of 0.02 mm to 24 mm, and especially advantageous is a height h 70 2 of 0.05 mm to 18 mm.
- the height h 70 2 is less than or equal to a quarter of the component length l 4 of the main current generator. 4
- the length l 4 of the main current generator 4 is the distance between the inlet opening 401 and the outlet opening 402 of the main current generator 4 along the axis X 4 (FIG. 8).
- the inlet port 401 and the outlet port 402 are defined where the cross-sectional area of the fluidic component that the fluid stream passes when it enters the flow chamber 400 or exits the flow chamber is smallest (locally).
- the length l 4 of Main current generator 4 can be between 0.01 mm and 500 mm.
- a component length U of the main current generator 4 is preferably from 0.02 mm to 350 mm.
- the supply lines 7 downstream of their inlet openings 701 initially have a constant height h 7 . Further downstream (for example, from half the length of the supply lines 7, the height h 7 downstream steadily decreases until at the outlet openings 702, the height h 70 2 reached.
- the height h 7 is than the diameter of the supply lines 7 in the oscillation plane of the side stream encoder 5 and defined perpendicular to the flow direction of the fluid flow of the secondary flow sensor 5 in the supply lines 7.
- the supply lines 7 are directed to the fluid flow of the main current generator 4 on both sides of and beyond the oscillation plane of the main current generator 4.
- the fluid flow of the secondary flow sensor 5 from the supply lines 7 impinges on the oscillation plane of the fluid flow of the main flow sensor 4 at an angle ⁇ .
- the angle ⁇ is defined as the angle subtended by the oscillation plane of the main current generator 4 (or by the boundary walls of the main current generator 4 parallel to its oscillation plane) and a tangent to a mean curvature line 70 of the supply lines 7.
- the mean curvature line 70 runs centrally through the supply lines 7.
- the tangent is shown in FIG. 7 by way of example for a point on the middle curvature line 70 at the outlet opening 702 by a dotted line.
- the angle ⁇ is different depending on the distance of the point on the average curvature line 70 of the outlet opening 702, wherein the angle ⁇ approaches 90 ° with decreasing distance.
- the angle ⁇ for the point on the mean line of curvature 70 at the outlet opening 702 is 92 °.
- the angle ⁇ may be between 30 ° and 150 ° (for the point on the mean line of curvature 70 at the outlet opening 702).
- Preference is given to an angle ⁇ of 60 ° to 120 ° (for the point on the mean curvature line 70 at the outlet opening 702).
- Particularly preferred is an angle ⁇ between 75 ° and 110 ° (for the point on the mean line of curvature 70 at the outlet opening 702).
- the angle ⁇ determines the direction of the pulse of the fluid flow of the secondary flow sensor 5. In this way, the oscillation angle ß of the fluid flow of the secondary flow sensor 5 can be influenced.
- the supply lines 7 can be designed in the region of their outlet openings 702 such that the outlet openings 702 are as uniform or constant as possible Speed profile of the fluid flow of the secondary flow sensor 5 is formed. It is advantageous if the speed profile over the height h 70 2 is slightly asymmetrical.
- the velocity profile is preferably as constant as possible along the width b 7 of the feed lines 7 or the width bsx of the outlet openings 702 of the feed lines 7 (FIG. 9).
- the width b 7 is the extension of the supply lines 7 transversely to the flow direction of the fluid flow in the supply lines 7 and substantially parallel to the oscillation plane of the fluid flow of the main flow sensor 4.
- the width b 7 is initially constant and decreases then continues downstream until it reaches the width bsx at the outlet port 702.
- the feed lines 7 can have at least one section in which the size of the cross-sectional area of the feed lines 7 decreases downstream.
- the cross-sectional area is the area through which the fluid stream can flow. By such a convergent section, the fluid flow within the supply lines 7 can be accelerated.
- a (divergent) section may be provided downstream of the convergent section, in which the size of the cross-sectional area of the supply lines 7 increases downstream.
- the cross-sectional areas need not vary uniformly in all directions within the plane transverse to the flow direction in the convergent and divergent sections.
- additional elements can alternatively be arranged in or on the supply lines 7, such as deflection vanes or (honeycomb / hexagonal) lattice structures.
- the momentum of the fluid flow exiting the supply lines 7 is also determined by the cross-sectional areas of the outlet openings 702.
- the deflecting feeders 7 are preferably shaped such that the cross-sectional area of the feed lines 7 upstream of the outlet opening 702 and in particular at the inlet opening 701 of the supply line 7 is greater than at the outlet opening 702.
- the cross-sectional area of the outlet opening 702 is in particular 70% to 100% of the cross-sectional area of Feed lines 7 upstream of the outlet port 702 and 70% to 100% of the cross-sectional area of the inlet port 701 of the supply lines 7.
- the cross-sectional area of the outlet port 702 should be 80% to 100% of the cross-sectional area of the supply lines 7 upstream of the outlet port 702 and 80% to 100%.
- the cross-sectional area of the inlet opening 701 of the supply lines 7 amount.
- the Cross-sectional areas of the supply lines 7 are rectangular in this embodiment. In principle, other cross-sectional surface shapes are also conceivable.
- the outlet opening 402 of the main flow sensor 4 is shown in section along the oscillation plane of the fluid flow of the main flow generator 4, a plan view of an outlet opening 702 of one of the two supply lines 7 and an outlet section 33 which adjoins the outlet opening 402 of the main flow generator 4.
- the outlet section 33 is delimited on two opposite sides (parallel to the oscillation plane of the main flow generator 4) by one of the outlet openings 702 of the two supply lines 7 and on two opposite sides (perpendicular to the oscillation plane of the main flow generator 4) by a respective boundary wall 34 34 are slightly rounded at their end facing the main flow direction of the fluid flow end.
- the rounded shape comprises a circle segment of radius r, which is defined in the plane of oscillation of the fluid flow of the main current generator 4.
- the radius r can take the value zero in the extreme case, that is, that of the main flow direction of the fluid flow opposite end of the boundary wall 34 is formed as an edge.
- the radius r can thus be between 0 mm and 15 mm, for example.
- the end of the boundary wall 34 directed opposite to the main flow direction of the fluid flow is preferably rounded, so that the radius r is preferably greater than 0 mm.
- the radius is r> 0 mm to 12 mm and particularly preferably> 0 mm to 7 mm.
- the directed in the main flow direction of the fluid flow end of the boundary wall 34 is preferably formed as an edge, that is, that here the radius is equal to zero.
- the boundary walls 34 enclose an angle ⁇ (in the oscillation plane of the main current generator 4).
- This angle ⁇ can influence the oscillation angle ⁇ of the main current generator 4.
- the oscillation angle ⁇ is limited by the angle ⁇ .
- the angle ⁇ is equal to the oscillation angle ⁇ or greater than the oscillation angle ⁇ .
- the angle ⁇ may, for example, assume values of 5 ° to 175 °. This angle is often determined by the available space.
- FIG. 10 two different examples of fluidic components, which can be used as the main current generator 4 of the fluidic module 1, are shown in the partial images I and II.
- the fluidic component of partial image I corresponds to the main current generator 4 of the fluidic module 1 from FIGS. 1 to 9.
- the fluidic component from the partial image II corresponds to the fluidic component from partial image I.
- bypass channels 404 are used to form an oscillating fluid flow.
- separators 405 in the form of protrusions are provided in the fluidic component from the partial image II at the inlet of the bypass ducts 404.
- a bulge 405 projects at the entrance of each bypass duct 404 over a section of the peripheral edge of the bypass duct 404 into the respective bypass duct 404 and changes its cross-sectional shape at this point while reducing the cross-sectional area.
- Separators 405 influence and control the separation of the secondary streams from the main stream.
- an outlet section 33 Downstream of the outlet opening 402, an outlet section 33 immediately adjoins, which widens steadily downstream in the plane of oscillation of the fluid flow of the main flow generator 4 from the outlet opening 402.
- the outlet section 33 has a trapezoidal cross-section as viewed in the plane of oscillation of the fluid flow of the main flow sensor 4.
- the outlet section 33 is delimited on two opposite sides (parallel to the oscillation plane of the main flow sensor 4) by one of the outlet openings 702 of the two supply lines 7 and on two opposite sides (perpendicular to the oscillation plane of the main flow sensor 4) by a respective boundary wall 34 33 extends along the main flow direction (along the axis X4 of the main flow transmitter 4, or along the height h 70 2 of the outlet openings 702 of the supply lines 7) over a length 133-
- the length I33 is the distance of the outlet opening 402 of the main flow sensor 4 and the outlet port 3rd the fluidic assembly 1 along the axis X 4 of the main current sensor 4.
- the height h 70 2 of the exhaust ports 702 of the feed lines 7 may be different from the length I33 of the outlet portion 33 .
- the height 70 2 of the exhaust ports 702 may be shorter than the h Length I33, with the Auslassöff tions 702 extend from the outlet opening 402 of the main flow sensor 4 toward the outlet opening 3, but do not reach the outlet opening 3.
- the material thickness h w of the downstream boundary wall of the supply lines 7 can be selected to be correspondingly high.
- the outlet openings 702 of the supply lines 7 can also extend from the outlet opening 402 of the main flow generator 4 to the outlet opening 3.
- the height h 70 2 of the outlet openings 702 and the length I33 of the outlet section 33 are the same.
- the cross-sectional shape of the outlet portion 33 may be trapezoidal or have other shapes (rectangular, polygonal, triangular, oval, hybrid form thereof) as shown in panel II of FIG.
- the width b33 of the outlet portion 33 can thus be constant or not constant.
- the width b33 is preferably at least 65% of the width bsx of the outlet opening 402 of the main flow transmitter 4.
- the width b33 is at least 80% of the width bsx of the outlet opening 402 of the main flow transmitter 4.
- the width b33 of the outlet section 33 can change downstream (see FIG. Enlarge) that the boundary walls 34 include substantially the angle ⁇ .
- the outlet openings 702 of the supply pipes 7 may be formed the same.
- FIG. 11 two different embodiments of the separator 6 are shown in the partial images I and II.
- the two separators 6 shown differ in the shape of the flow divider 603.
- the flow divider 603 divides the oscillating fluid flow flowing from the inlet opening 601 into the separator 6 such that the oscillating fluid flow flows alternately through one of the two outlet openings 602.
- two outlet openings 602 are shown.
- the separator 6 can also have more than two outlet openings.
- the speed of the fluid flow within the supply lines 7 and / or at the outlet openings 602 of the separator 6 is periodically briefly approximately 0 or the speed is reduced (to, for example, 75% of the maximum speed). It is particularly advantageous if the flow direction of the fluid changes periodically briefly, that is, the sign of the velocity field in the outflow direction changes periodically short-term.
- two different embodiments of the separator 6 are suitable (in combination with the Maustromgeber 5). In this case, the secondary current generator
- the first embodiment (partial image I) generates a substantially binary or digital flow pattern. This embodiment can be used at higher oscillation frequencies (from about 100 Hz). With this embodiment, at each outlet opening 702 of the supply lines 7, a flow signal which corresponds to almost a rectangular function can be generated, wherein the rectangular functions for the two outlet openings 702 are shifted from each other by half a phase. In the embodiment of part I, the fluid flow is not divided by a sharp edge, but is alternately directed into the outlet ports 602 by an inner curved wall 603 as a flow divider.
- the curved wall 603 is arranged between the two outlet openings 602 and (viewed along the axis X5 in the fluid flow direction) arched outwards.
- the curvature of the inner wall 603 creates a depression (indentation).
- the cross-sectional area of the outlet openings 602 is greater than or equal to the cross-sectional area of the inlet opening 601. This can support the effect of the binary flow pattern.
- cross-sectional areas of the outlet openings 602 that are larger than the cross-sectional area of the inlet opening 601 are advantageous.
- the space between the inner curved wall 603 and the inlet opening 601 may be formed in shape and size such that there a vortex is generated. This vortex supports the aforementioned speed reduction or speed reversal at the outlet openings 702 of the feed lines 7. This also helps to support the effect of the binary flow pattern.
- the second embodiment (Part II) produces a substantially analogous flow pattern.
- the second embodiment is particularly advantageous for compressible fluids as well as for applications with low oscillation frequency (usually below 200 Hz).
- the inner wall 603 is formed as a wedge which extends substantially along the axis X5 against the direction of fluid flow into the separator
- FIGS. 13 and 14 show a further embodiment of the invention.
- This embodiment differs from the embodiment of Figures 1 to 9 in particular by the relative arrangement of the first fluidic part geometry I and the second fluidic part geometry II.
- the size ratios of the first fluidic part geometry I and the second fluidic part geometry II compared to the embodiment of Figures 1 to 9 are different.
- the axis X 4 of the main current generator 4 and the axis Xs of the secondary current generator 5 are not arranged coaxially (successively), but the axes X 4 and Xs form an angle of substantially 90 ° with each other.
- the oscillation planes of the main current generator 4 and the secondary current generator 5 also enclose an angle of substantially 90 ° with one another.
- the geometry of the supply lines may differ from the embodiment of FIGS. 1 to 9.
- the width b 7 (bsx) of the supply ducts 7 (the exhaust ports 702) is the diameter of the supply ducts 7 in the oscillation plane of the bypass sensor 5 and perpendicular to the flow direction of the fluid flow of the bypass sensor 5 in the supply ducts 7 defined.
- the height h 7 (h 70 2) of the supply lines 7 is defined as the extension of the supply lines 7 transverse to the flow direction of the fluid flow in the supply lines 7 and substantially parallel to the plane of oscillation of the fluid flow of the main current generator 4. Accordingly, the definitions of the widths b 7 and bsx and the heights h 7 and h 70 2 in the two embodiments of Figures 1 to 9 and 13 and 14 are reversed.
- the width b 7 of the supply lines is initially constant and then steadily increases downstream until it reaches the outlet port 702 reaches the width DEX.
- the supply lines 7 have downstream of their inlet openings 701, first a constant height h. 7 Further downstream (for example, from half the length of the supply lines 7), the height h 7 downstream decreases steadily until it reaches the height h 70 2 at the outlet openings 702.
- the width of the outlet opening 702 of the supply lines 7 may be up to 30% greater or smaller than the width bsx of the outlet opening of the main current generator 4. As a result, the manufacturability can be simplified.
- the size of the cross-sectional area of the supply pipes 7 is preferably constant as much as possible along the extension direction of the supply pipes 7, despite the height and width of the supply pipes 7 changing along the extension direction of the supply pipes 7. However, the size of the cross-sectional areas downstream to the outlet ports 702 of the supply lines may decrease by up to 30%.
- the cross-sectional area of the supply lines 7 in any portion of the supply lines between the inlet opening 701 and the outlet opening 702 is at most 30% smaller than the cross-sectional area of the inlet opening 701.
- the cross-sectional area of the outlet opening 702 is preferably at most 30% less than the cross-sectional area of the supply line 7 upstream of the outlet opening 702. At low pressure applications of less than 250 bar inlet pressure, the deviation is preferably less than 20%.
- FIG. 15 in sub-images I and II, two snapshots of the fluid flow emerging from the fluidic assembly according to FIGS. 1 to 9 are shown, wherein the two snapshots show the fluid flow at the same time, but from different directions. Between the two directions in the partial images I and II is an angle of approximately 80 °. It can be seen from the two figures that the fluidic assembly 1 generates a fluid jet which oscillates not only in one spatial plane but in two planes, and thus the fluid jet exerts a three-dimensional oscillation. This fluid flow has a nearly rectangular spray pattern. Such a spray pattern is suitable, for example, for cleaning and spray distribution applications.
- fluidic components shown in the fluidic assembly according to the invention of Figures 1 to 15 are only exemplary.
- fluidic components which generate oscillation by means of colliding fluid jets or by interacting vortices or recirculation regions or the other means for forming an oscillation of the fluid flow have as bypass channels (feedback-free fluidic components).
- a fluidic component the so-called cup component
- the cup component comprises (in contrast to the fluidic assembly 1 of Figures 1-15) only a fluidic geometry.
- This fluidic geometry comprises a flow chamber 100, which can be traversed by a fluid flow which enters the flow chamber 100 through an inlet opening 101 and exits the flow chamber 100 through an outlet opening 102.
- the inlet opening 101 and the outlet opening 102 each have a circular cross-sectional area. In principle, other shapes can be used.
- the centers of the inlet opening 101 and the outlet opening 102 lie on an axis Xi, which defines the main flow direction within the cup member 10.
- the flow chamber 100 includes a main flow channel 103 and five bypass channels (feedback channels) 104a-e.
- the number of bypass channels 104a-e is only exemplary.
- the cup member 10 may also have another odd number (at least three) of bypass channels.
- the bypass ducts 104a-e are formed substantially identical. However, they can also be designed differently.
- bypass ducts 104a-e branch off (immediately) downstream of the inlet port 101 from the main flow duct 103 and rejoin therewith (immediately) upstream of the outlet port 102.
- the bypass ducts 104a-e are in the The main flow direction is first viewed from the inlet opening 101 directed to the outlet opening 102 and substantially reverse their direction just before the outlet opening 102.
- the cross-sectional areas of the bypass channels 104a-e are round in this embodiment. However, the cross-sectional areas may be arbitrary.
- the main flow channel 103 has chambers 1 10a-e, the number of which corresponds to the number of bypass channels 104a-e. Each chamber 110a-e is fluidly connected to a bypass duct 104a-e.
- the chambers 1 10a-e are formed by the outer wall of the main flow channel 103 and open in the direction of the axis Xi. In the illustrated embodiment, the chambers 1 10a-e have a substantially semicircular outer wall in the sectional plane transverse to the axis Xi (FIG. 21). Other shapes, in particular asymmetric shapes, are possible as long as the chambers 1 10a-e are open towards the axis Xi. The shapes are preferably continuous and have a curvature.
- the outer wall of the individual chambers 110a-e protrude into the flow chamber 100 to different degrees.
- the outer wall of a chamber may be asymmetrical. That is, the boundary wall on one side of the chamber may protrude more into the flow chamber than on the other side of the chamber and / or the wall may be asymmetrically aligned on both sides of the chamber.
- the extent to which the outer wall projects into the flow chamber at the individual sides of the chambers may be constant or vary over the length I of the cup component.
- the chambers 110a-e may be twisted about the axis Xi.
- the twist can vary in severity and can range from a few seconds to several degrees (even more than 360 °). Through the twisting can be achieved that the fluid is passed into the adjacent chamber 110a-e.
- the main flow channel 103 with the individual chambers 110a-e is shaped such that the cross-sectional area of the main flow channel 103 transversely to the axis Xi initially increases from the inlet opening 101 downstream and then tapers again.
- the outer wall of the tapered section encloses an angle ⁇ with the axis Xi.
- the tapered portion is shorter than the enlarging portion (viewed along the axis Xi). For example, the enlarging portion may be twice as long as the tapered portion. At the transition between the enlarging portion and the tapered portion, the shape of the outer wall of the main flow passage 103 changes discontinuously.
- the fluid flows through the inlet opening 101 into the main flow channel 103, where it predominantly rests against the wall of one of the five chambers 110a-e by the Coanda effect and flows in the direction of the outlet opening 102. Most of the fluid exits the cup member 10 through the outlet port 102. A small portion of the fluid does not exit the component 10, but enters the bypass channels 104a-e immediately upstream of the outlet port 102. Different amounts of fluid enter the individual bypass ducts 104a-e, with the majority flowing into the bypass duct 104a-e, which is connected to the chamber 110a-e, to whose wall the incoming fluid flow has been applied. In the bypass passages 104a-e, the fluid flows toward the inlet port 101.
- the recirculating fluid portion passes from the bypass channels 104a-e, forcing the fluid entering through the inlet port 101 into a chamber other than the chamber that was predominantly filled in the previous cycle. Since no two chambers 110a-e and two bypass channels 104a-e are diametrically opposed, no oscillation can form in a plane in which the two chambers 110a-e and two bypass channels 104a-e are located. Rather, it is achieved that the fluid flow is alternately directed into the different chambers 110a-e and thus an outgoing fluid jet is generated, which moves three-dimensionally in space and thereby oscillates between several (here five) points. In order to generate the dynamically moved fluid jet, a transient flow is generated within the cup member 10. The movement of the exiting fluid flow can be influenced by the fluid velocity and the angle ⁇ .
- the bypass ducts 104a-e may each be aligned with a preferred chamber 110a-e such that the fluid jet exiting the bypass ducts 104a-e directs the fluid flow entering the inlet port 101 into the corresponding preferred chamber 110a-e.
- the length I of the cup component 10 can assume values of 0.1 mm up to 1 000 mm. Preferred lengths I are in the range between 0, 15 mm and 500 mm. The length is defined as the distance between the inlet port 101 and the outlet port 102 along the axis Xi, wherein the inlet port 101 and the outlet port 102 are respectively defined where the cross-sectional area of the fluidic component that the fluid stream passes when entering the flow chamber 100 enters or exits the flow chamber again, each (locally) is the smallest.
- the cup member has downstream of the outlet port 102 a divergent portion 112 of length t ( Figure 18). The divergent share is optional. This divergent portion 112 can perform different tasks. One object is the bundling of the jet emerging from the outlet opening 102. The divergent portion can also be used to reduce or increase the oscillation angle of the outgoing beam.
- FIG. 22 shows a cup component 10 according to a further embodiment.
- This embodiment differs from that of Figures 16 to 21 in that the bypass ducts 104a-e are fluidically interrupted. Rather, only one approach to the inlet openings and outlet openings is provided in each case.
- the approaches for the inlet openings and outlet openings can be connected, for example, with a pipe or hose.
- the inlet opening of a bypass channel can be connected to the associated outlet opening.
- the inlet opening of a bypass duct can also be connected to the outlet opening of another bypass duct.
- the alignment of the bypass ducts can be adjusted individually and the course of movement of the fluid jet emerging from the cup component can be influenced.
- the cup member 10 of Figure 22 is externally formed substantially in the shape of a cylinder, wherein the axis of rotation of the cylinder along the main flow direction of the cup member extends.
- the outer shape is only an example and may differ from the cylindrical shape.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- Measuring Volume Flow (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102017206849.3A DE102017206849A1 (de) | 2017-04-24 | 2017-04-24 | Fluidische Baugruppe |
PCT/EP2018/059474 WO2018197231A1 (de) | 2017-04-24 | 2018-04-12 | Fluidische baugruppe |
Publications (1)
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EP3615223A1 true EP3615223A1 (de) | 2020-03-04 |
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EP18719783.5A Withdrawn EP3615223A1 (de) | 2017-04-24 | 2018-04-12 | Fluidische baugruppe |
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US (1) | US20200376503A1 (de) |
EP (1) | EP3615223A1 (de) |
DE (1) | DE102017206849A1 (de) |
WO (1) | WO2018197231A1 (de) |
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US11085469B2 (en) | 2017-10-11 | 2021-08-10 | Ohio State Innovation Foundation | Frequency-synchronized fluidic oscillator array |
WO2019108628A1 (en) | 2017-11-28 | 2019-06-06 | Ohio State Innovation Foundation | Variable characteristics fluidic oscillator and fluidic oscillator with three dimensional output jet and associated methods |
US11739517B2 (en) | 2019-05-17 | 2023-08-29 | Kohler Co. | Fluidics devices for plumbing fixtures |
US11865556B2 (en) | 2019-05-29 | 2024-01-09 | Ohio State Innovation Foundation | Out-of-plane curved fluidic oscillator |
DE102019120809A1 (de) * | 2019-08-01 | 2021-02-04 | Voith Patent Gmbh | Düse |
EP4031287A4 (de) * | 2019-09-16 | 2023-10-11 | AS America, Inc. | Fluidischer oszillator |
US20230052742A1 (en) * | 2020-01-13 | 2023-02-16 | Ohio State Innovation Foundation | Fluidic oscillator device with three-dimensional output |
WO2022051605A1 (en) * | 2020-09-04 | 2022-03-10 | As America, Inc. | Microfluidic oscillator |
US12109445B2 (en) | 2022-06-14 | 2024-10-08 | The Boeing Company | Fire extinguishing system and method |
KR20240121103A (ko) * | 2023-02-01 | 2024-08-08 | 삼성전자주식회사 | 의류 관리기 |
Family Cites Families (13)
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DE1723359U (de) * | 1956-03-02 | 1956-05-30 | Schilde Maschb Ag | Vorrichtung zum hin und herschwenken eines gas- oder fluessigkeitsstromes. |
US4508267A (en) * | 1980-01-14 | 1985-04-02 | Bowles Fluidics Corporation | Liquid oscillator device |
US4905909A (en) * | 1987-09-02 | 1990-03-06 | Spectra Technologies, Inc. | Fluidic oscillating nozzle |
DE4343009C2 (de) * | 1993-12-16 | 1996-06-13 | Daimler Benz Aerospace Ag | Einspritzvorrichtung, insbesondere für ein Strahltriebwerk |
US7014131B2 (en) | 2002-06-20 | 2006-03-21 | Bowles Fluidics Corporation | Multiple spray devices for automotive and other applications |
US7111800B2 (en) | 2002-11-12 | 2006-09-26 | Bowles Fluidics Corporation | Fluid spray apparatus |
US7134609B1 (en) | 2003-05-15 | 2006-11-14 | Bowles Fluidics Corporation | Fluidic oscillator and method |
US7354008B2 (en) | 2004-09-24 | 2008-04-08 | Bowles Fluidics Corporation | Fluidic nozzle for trigger spray applications |
US7478764B2 (en) | 2005-09-20 | 2009-01-20 | Bowles Fluidics Corporation | Fluidic oscillator for thick/three-dimensional spray applications |
FR2915251B1 (fr) * | 2007-04-23 | 2009-06-12 | Coutier Moulage Gen Ind | Oscillateur fluidique |
CA2711711C (en) * | 2010-08-10 | 2014-02-11 | Globe Union Industrial Corp. | Fluidic oscillator |
DE102013002411A1 (de) * | 2013-02-11 | 2014-08-14 | Dürr Systems GmbH | Beschichtungsvorrichtung mit Ablenkeinrichtung zum Ablenken eines Beschichtungsmittels |
DE202015104279U1 (de) * | 2015-06-08 | 2016-12-21 | Technische Universität Berlin | Fluidisches Bauteil und Anwendungen des fluidischen Bauteils |
-
2017
- 2017-04-24 DE DE102017206849.3A patent/DE102017206849A1/de active Pending
-
2018
- 2018-04-12 WO PCT/EP2018/059474 patent/WO2018197231A1/de unknown
- 2018-04-12 US US16/606,803 patent/US20200376503A1/en not_active Abandoned
- 2018-04-12 EP EP18719783.5A patent/EP3615223A1/de not_active Withdrawn
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US20200376503A1 (en) | 2020-12-03 |
WO2018197231A1 (de) | 2018-11-01 |
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