EP3302812A1 - Fluidischer oszillator - Google Patents
Fluidischer oszillatorInfo
- Publication number
- EP3302812A1 EP3302812A1 EP16733312.9A EP16733312A EP3302812A1 EP 3302812 A1 EP3302812 A1 EP 3302812A1 EP 16733312 A EP16733312 A EP 16733312A EP 3302812 A1 EP3302812 A1 EP 3302812A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow
- main flow
- fluidic component
- filter element
- fluidic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/40—Filters located upstream of the spraying outlets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
- F15C1/00—Circuit elements having no moving parts
- F15C1/22—Oscillators
Definitions
- the invention relates to a fluidic component according to the preamble of claim 1 and to devices comprising such a fluidic component.
- Fluidic components are provided to produce a moving fluid jet.
- a desired Fluidfiermuster is generated at the component outlet, without the fluidic component comprises movable elements.
- Examples of such fluid flow patterns are, beam oscillations, rectangular, sawtooth or triangular beam paths, spatial or temporal jet pulsations and switching operations.
- Oscillating fluid jets are used, for example, to evenly distribute a fluid jet (or fluid stream) to a target area.
- the fluid stream may be a liquid stream, a gas stream or a multiphase stream (for example, wet steam).
- Fluidic components are known, for example, from US Pat. No. 8,702,020 B2 or US Pat. No. 8,733,401 B2.
- the flow chamber through which a main flow of a fluid can flow.
- the flow chamber is also referred to as the interaction chamber.
- the flow chamber has at least one inlet opening, via which the fluid enters the fluidic component, and at least one outlet opening, via which the fluid exits from the fluidic component.
- a means for the targeted change in direction of the fluid flow is provided.
- this means is designed as at least one additional flow channel (also referred to as feedback channel).
- This feedback channel is a means for turning over a main flow which flows through the flow chamber from the inlet opening to the outlet opening.
- the means for targeted change of direction may also be designed as a bag chamber.
- particles for example, foreign bodies or contaminants
- the fluidic component may accumulate in sections of the fluidic component, so that the fluidic component can no longer perform its function or only deteriorate.
- the particle-laden fluid thus flows around (passes through) the filter elements, which are located upstream or at the inlet opening of the fluidic component and which filter out the particles before the fluid enters the fluidic component.
- additional fluid filtration means located upstream of the inlet opening causes higher costs than a fluidic component without filter elements and, on the other hand, increases the complexity of the systems.
- the filter elements are arranged at the inlet opening of the fluidic component (as known, for example, from EP 1 513 711 B1, EP 1 053 059 B1 or EP 1 827 703 B1)
- the fluidic component may lose its function if the filter element is due to is blocked by foreign bodies.
- additional means for fluid filtration increases the pressure loss compared to a fluidic component without filter elements.
- the fluidic component comprises a flow chamber with at least one inlet opening and at least one outlet opening, wherein the flow chamber can be flowed through by a main flow of a fluid from the at least one inlet opening to the at least one outlet opening.
- the main flow thus has a basic direction, which is directed from the at least one inlet opening to the at least one outlet opening.
- the fluidic component further comprises at least one means for the targeted direction change of the main flow.
- the means for directional change in particular may be a means for periodically turning over the main flow.
- the fluidic component is characterized in that at least one filter element is provided, which is arranged between the means for the targeted change in direction of the main flow and the flow chamber.
- the at least one filter element between a means for generating a varying flow direction for the Main flow and the flow chamber may be arranged.
- the means for the targeted change in direction of the main flow can thus be a means for generating a varying flow direction for the main flow.
- the at least one filter element is thus not arranged upstream or at the inlet opening of the fluidic component, so that only a part of the fluid flow (namely the secondary flow as will be explained later) passes through the at least one filter element. As a result, a strong pressure drop can be avoided by the presence of the at least one filter element.
- the at least one filter element does not generally prevent particles from entering the fluidic component.
- the at least one filter element can prevent / make it difficult for particles to enter the means for the targeted change in direction of the main flow.
- the means for the targeted change in direction of the main flow has a smaller inner diameter than the flow chamber, can be avoided by the at least one filter element, which is arranged between the means for the targeted change in direction of the main flow and the flow chamber, that particles in the means deposit / accumulate for targeted change in direction of the main flow and thus affect the function of this means such that the fluid flow at the outlet opening of the fluidic component no longer emerges as a moving fluid flow.
- a filter function for the means for the targeted change in direction of the main flow is sufficient. Accordingly, it is not necessary that the entire fluid flow passes through the at least one filter element. This was probably not realized until now, since it was assumed that the function of the fluidic components would be influenced too much. It may have been assumed that the additional filter elements would entail an increase in the surface area, thus increasing the risk of faster smearing or calcification of the fluidic components.
- a secondary flow branches off from the main flow, wherein the secondary flow and the main flow can flow in different directions. While the main flow passes through the flow chamber, the secondary flow flows through the means for the targeted change of direction of the main flow. Particles, which are directed by the secondary flow on the at least one filter element and collect there, can be entrained by the main flow and the fluidic Leave the component through the outlet opening. This can be prevented that the at least one filter element clogged by an accumulation of particles and thus the function of the means for targeted change in direction of the main flow is impaired such that the fluid flow at the outlet of the fluidic component no longer emerges as a moving (oscillating) fluid flow ,
- the at least one filter element may in particular be arranged between the flow chamber and the at least one means for the targeted change in direction of the main flow, that the at least one filter element during operation (that is, while a fluid stream flows through the fluidic component) is exposed to flow with changing flow direction ,
- this flow may be the main flow that oscillates due to the targeted direction change means of the main flow. Due to the changing flow direction, a flushing of the at least one filter element can be achieved.
- the at least one filter element is thus subject to a self-cleaning effect during operation.
- the at least one filter element can be arranged along or parallel to one of the flow lines of the main flow.
- the alignment may be provided along such streamlines, which are located in the (near-wall) edge region of the main flow, when the main flow is pressed against a side wall of the flow chamber, or bears against this.
- a near-walled edge region of the main flow is meant a region of the main flow that is closer to a side wall of the flow chamber than to an axis that extends centrally through the flow chamber along the direction of the main flow.
- the at least one filter element may be disposed in a region along or parallel to a streamline of the main stream in which the main stream at least temporarily has a large (or largest) flow velocity component substantially perpendicular to the mainstream direction (that of FIG the inlet opening to the outlet opening of the fluidic component is defined).
- a region is, for example, a region in which a circulation region is formed at times (due to the means for directional change in direction of the main flow) having two flow velocity components substantially perpendicular to the main flow direction, the one component being at least one Filter element is directed and the other component is directed away from the at least one filter element.
- the at least one filter element can also be arranged in a region along or parallel to a streamline of the mainstream in which the mainstream at least temporarily has a large (or largest) flow velocity component substantially along the base direction of the mainstream compared to other streamlines or regions.
- Such an area is, for example, a region in which the main flow temporarily flows from the inlet opening to the outlet opening of the fluidic component.
- the at least one filter element may be disposed in an area (between the at least one filter element and the mainstream directional change means) in which the main flow over a first period of time is a substantially (or largest) flow velocity component substantially perpendicular to other areas to the basic direction of the main flow and over a second period of time has a large (or largest) flow velocity component substantially along the direction of the main flow compared to other regions.
- the first and the second period may alternate (several times in succession).
- the skilled person can determine this area by means of the usual methods known from the prior art, for example for a fluidic component without filter elements.
- first velocity component that extends (substantially) perpendicular to the main flow, the better the cleaning effect for the at least one filter element can be.
- second velocity component with the greatest amplitude of oscillation, which extends (substantially) along the main flow, for the at least one filter element, since this at least one filter element is thus constantly flushed from different directions. Due to the high oscillation amplitude of the first and second velocity components, interfering particles are transported in the direction of the main flow and removed from the component with the main flow.
- the at least one filter element can also be arranged at a position (in a region) between the flow chamber and the at least one directional change device of the main flow, at which the absolute flow velocity change (transverse to the direction of the main flow) changes maximally.
- the maximum can be a local or a global maximum.
- the at least one filter element can also be arranged at a position (in a region) between the flow chamber and the at least one means for the targeted change in direction of the main flow, at which the cross section of the flow chamber or the means for the targeted change in direction of the main flow, which is effective for the flow. mung is minimal. This can be a local or global minimum.
- the fluidic component may lose its function.
- the at least one means for the targeted change in direction of the main flow may have one or more feedback channels, be designed as a feedback channel or be designed as a bag chamber.
- the feedback channel or the bag chamber are in fluid communication with the flow chamber.
- the feedback channel has an input and an output, each with an opening.
- the baghouse on the other hand, has an opening which forms both the entrance and exit.
- the at least one filter element can be arranged at an opening of the at least one means for the targeted change of direction of the main flow (of the at least one feedback channel or the bag chamber).
- the at least one filter element can be arranged only at the entrance, only at the exit or at the entrance and at the exit of the at least one means for the targeted change of direction of the main flow.
- the at least one filter element may be arranged only at the input, only at the output or at the input and at the output of the feedback channel.
- the filter elements may differ from one another such that the at least one input-side filter element reduces the opening of the feedback channel at the input more than the at least one outlet side filter element the opening of the feedback channel the opening at the outlet.
- the at least one filter element can be cylindrical, pyramidal or conical or a rectangular, triangular, oval, round or polygonal cross-section.
- the reduction of the cross section of the respective opening can be adjusted.
- These parameters are, for example, depending on the type of fluid and the amount, shape and size of the particles with which the fluid is loaded, selectable.
- a plurality of filter elements can be arranged in a filter element arrangement in a row, wherein in each case a distance between the individual filter elements is provided and the filter elements are lined up.
- the filter elements can run along a straight line, follow a curve or have any other desired course.
- the course may depend on the geometry of the fluidic component, the type of fluid (for example viscosity, density, surface tension, temperature) and / or the type of particles (for example size, shape, deformability).
- the exact position of the filter elements in the region of the feedback channels or bag chamber can be varied.
- the filter element arrangement takes place in a mental continuation of the laterally delimiting walls of the fluidic component (the flow chamber), at a position between the flow chamber and the at least one means for the targeted change of direction of the main flow.
- the filter elements may extend over their entire component depth. In this case, the component depth is defined essentially perpendicular to the plane in which the outflowing flow of fluid oscillates.
- the filter elements may be spaced from sidewalls of the flow chamber and the directional change means of the main flow.
- a filter element arrangement (a group of filter elements) which extends, for example, over the entire (or a part of) the width of an opening of the means for the targeted change in direction of the fluid flow.
- the filter element arrangements extend substantially transversely (this does not necessarily mean an angle of 90 °) to the flow direction of the secondary flows.
- filter elements or filter element arrangements may be chosen such that the cross section of the feedback channel at its input is reduced more than the cross section of the feedback channel at its output. For example, the distance between filter elements in the input region may be smaller than the distance between filter elements in the output region.
- filter elements can be provided only in the input area (and not in the output area).
- the at least one filter element may have a grid structure and / or a network structure. This structure can extend over the entire opening at the entrance / exit of the feedback channel or the bag chamber, retaining the particles like a sieve. In this case, the reduction of the size of the respective opening can be adjusted by selecting the density and the strength of the grid or network lines of the at least one filter element.
- the at least one filter element can influence the function of the fluidic component and thus the fluid flow at the outlet opening of the fluidic component, depending on the precise positioning between the flow chamber and the means for directional change of the main flow (in the input or output region of the means).
- the filter elements can change the exit angle and / or the oscillation frequency of the exiting fluid jet with respect to a fluidic component without filter elements.
- the frequency and / or exit angle changes of the fluid flow which can be caused by the filter elements at the outlet opening of the fluidic component, can be reduced or eliminated.
- the filter elements can also be actively applied to affect the exiting fluid flow.
- the emission characteristic e.g. the exit angle of the fluid jet or the frequency can be influenced.
- a non-stick coating may be provided which prevents / impedes the deposition of particles or facilitates the washing away of the particles.
- This non-stick coating can in particular be applied to the at least one filter element.
- the non-stick coating can also be applied to the inner surface of the flow chamber and / or the means for the targeted change in direction of the main flow.
- the at least one filter element may be formed as a rigid body.
- the at least one filter element may be designed to be at least partially flexible and / or elastically deformable.
- Fluidic components according to at least one embodiment of the invention can be used in various devices, in particular domestic appliances, industrial appliances or industrial appliances.
- Such devices are, for example, dishwashers, dishwashers, washing machines, steam cleaning appliances, steamer, Convection machines, pasteurisers, dryers, appliances with steam function, sterilization systems, disinfection systems.
- cleaning devices especially in wet cleaning process technology, such as in high-pressure cleaners, low-pressure cleaners, car washes, Spritzalismsanalgen, descaling, deicing the fluidic component of the invention can be used.
- irrigation devices are used, for example, in agriculture and agricultural technology, devices for distributing plant protection products, jet devices (devices for producing shot peening, which are used in so-called shot peening, devices for producing CO2, snow or dry ice jets, jets with mineral media, Compressed air blasting) Surface treatment equipment in paint shops and in electroplating plants, whirlpools, mixing systems (combustion appliances, internal combustion engines, heating systems, injection systems, mixing plants, bio / chemical reactors), cooling systems, extinguishing systems, in particular for installations using river water, seawater or seawater, and water treatment systems Field of application for the fluidic component according to the invention.
- jet devices devices for producing shot peening, which are used in so-called shot peening, devices for producing CO2, snow or dry ice jets, jets with mineral media, Compressed air blasting
- Fig. 1 in the diagrams a), b) and c) schematically three known fluidic components with additional flow channels and integrated filter elements respectively in the region of the inlet opening of each fluidic component;
- FIG. 2 shows in the partial images a), b) and c) schematically three known fluidic components with integrated filter elements respectively in the region of the inlet opening of each fluidic component;
- FIG. 3 shows a flow simulation for the fluidic component from FIG. 4, wherein the velocity distribution and in partial image b) the velocity distribution and the flow lines are shown in partial image a); a schematic representation of a fluidic component according to an embodiment of the invention; 5 shows a schematic representation of a fluidic component according to a further embodiment of the invention;
- Fig. 6 is a schematic representation of a fluidic component according to another
- FIG. 7 shows three snapshots (FIGS. A) to c) within an oscillation cycle of a fluid flow to illustrate the position of the filter elements of the fluidic component from FIG. 4 with respect to the main flow, the secondary flow and the recirculation regions;
- Fig. 8 is a schematic representation of a fluidic component according to another
- Embodiment of the invention is a schematic representation of a fluidic component according to another
- Fig. 10 is a schematic representation of a fluidic component according to another
- Fig. 11 is a schematic representation of a fluidic component according to another
- Fig. 13 is a schematic representation of a fluidic component according to another
- FIG. 14 is a schematic representation of a fluidic component according to another
- Fig. 15 is a schematic representation of a fluidic component according to another
- Fig. 16 is a schematic representation of a fluidic component according to another
- Embodiment of the invention shows two schematic representations of fluidic components according to further embodiments of the invention
- Fig. 18 is a schematic representation of a fluidic component according to another
- 19 is a schematic representation of a fluidic component according to another
- FIGS. 1 and 2 show various fluidic components which are known from the prior art.
- the fluidic component from FIG. 1, partial image a) is disclosed in US Pat. No. 8,702,020 B2, the fluidic components from FIG. 1, partial images b) and c) and from FIG. 2, partial image b) in EP 1 053 059 B1, the fluidic component from FIG. 2, partial image a) in EP 1 513 711 B1 and the fluidic component from FIG. 2, partial image c) in EP 2 102 922 B1.
- the fluidic components are generally identified by the reference numeral 1.
- the fluidic components 1 each have a flow chamber MC through which a (particle-loaded) fluid can flow.
- the fluid enters the flow chamber MC via an inlet port PN and out of the flow chamber MC again via an outlet port EX.
- the fluidic components 1 from FIG. 1 have in each case two feedback channels FC as a means for targeted change of direction of the main flow of the fluid flow.
- the fluidic components 1 from FIG. 2 each have two collision channels as means for the targeted change in direction of the main flow of the fluid flow, which are aligned with one another in such a way that the currents emerging from the collision channels collide with one another in order to generate an oscillation.
- filter elements FE are arranged in each case for filtering particles with which the fluid entering the fluidic components 1 could be loaded.
- the filter elements FE have different shapes and arrangements.
- the fluidic components 1 from FIGS. 1 and 2 have in common that the filter elements FE are always arranged in such a way are that all the fluid must pass through the filter elements FE in order to reach the outlet opening can.
- FIG. 4 shows a fluidic component 1 according to an embodiment of the invention.
- FIG. 3 shows in the partial image a) the velocity distribution of a fluid flow through which the fluidic component 1 from FIG. 4 flows.
- the partial image b) of FIG. 3 additionally shows the flow lines of the fluid flow.
- the fluidic component 1 from FIG. 4 comprises a flow chamber MC through which a fluid flow 10, 20 can flow (FIGS. 3, 7 and 20).
- the flow chamber MC is also referred to as the interaction chamber.
- the flow chamber MC comprises an inlet port PN, through which the fluid flow enters the flow chamber MC, and an outlet port EX, via which the fluid flow exits the flow chamber MC.
- the inlet port PN and the outlet port EX are arranged on two opposite sides of the fluidic component 1.
- the fluid flow moves in the flow chamber MC substantially along a longitudinal axis A of the fluidic component 1 (connecting the inlet port PN and the outlet port EX to each other) from the inlet port PN to the outlet port EX.
- the longitudinal axis A forms an axis of symmetry of the fluidic component 1.
- the longitudinal axis A is the intersecting line of two mutually perpendicular planes of symmetry, with respect to which the fluidic component 1 is mirror-symmetrical. In this case, one of the planes of symmetry is parallel to the plane of the drawing of Figure 4.
- the geometry of the fluidic component 1 (mirror) is not symmetrical or axisymmetric.
- two bypass ducts (feedback channels) FC are provided in addition to the flow chamber MC, wherein the flow chamber MC (viewed transversely to the longitudinal axis A) is arranged between the two bypass ducts FC.
- the flow chamber MC viewed transversely to the longitudinal axis A
- only one bypass duct or more than two secondary ducts can be provided.
- the two bypass channels FC branch off from the flow chamber MC.
- the exhaust port EX Immediately before (upstream) the exhaust port EX they are then brought together again.
- the two bypass ducts FC are arranged symmetrically with respect to the longitudinal axis A. According to an alternative, not shown, the bypass ducts are not arranged symmetrically.
- the flow chamber MC connects the inlet port PN and the outlet port EX with each other in a substantially straight line, so that the fluid flow flows essentially along the longitudinal axis A of the fluidic component 1.
- the bypass ducts FC extend from the inlet port PN in a first section in each case at first at an angle of substantially 90 ° to the longitudinal axis A in opposite directions. Subsequently, the bypass ducts FC bend so that they each extend substantially parallel to the longitudinal axis A (in the direction of the outlet opening EX) (second section).
- the bypass ducts FC again change direction at the end of the second section, so that they are respectively directed substantially in the direction of the longitudinal axis A (third section).
- the direction of the bypass channels FC changes at the transition from the second to the third section by an angle of about 120 °.
- the change in direction between these two sections of the bypass ducts FC other than the angle mentioned here can be selected.
- the bypass ducts FC are a means for influencing the direction of the fluid flow, which flows through the flow chamber MC.
- the bypass ducts FC each have an inlet 6a, 6b, which is formed by the end of the bypass ducts FC facing the outlet opening EX, and in each case an outlet 8a, 8b, which is formed by the end of the bypass ducts FC facing the inlet port PN.
- the secondary flow 20 Figure 20
- the remaining part of the fluid flow (the so-called main flow 10) exits the fluidic component 1 via the outlet port EX (FIG. 20).
- the exiting fluid flow is identified by the reference numeral 15 in FIG.
- the secondary flows 20 emerge at the outlets 8a, 8b from the bypass ducts FC, where they can exert a lateral (transversely to the longitudinal axis A) impulse on the fluid flow entering through the inlet port PN.
- the direction of the fluid flow is influenced in such a way that the fluid flow 15 exiting at the outlet port EX 3 spatially oscillates, specifically in the plane in which the flow chamber MC and the bypass flow channels FC are arranged.
- FIG. 20, which represents the oscillating fluid flow, will be explained later.
- the bypass ducts FC each have a cross-sectional area which is almost constant over the entire length (from the inlet 6a, 6b to the outlet 8a, 8b) of the bypass ducts FC.
- the size of the cross-sectional area of the flow chamber MC in the flow direction of the main flow 10 steadily increases, and the shape of the flow chamber MC is mirror-symmetrical to the two planes of symmetry.
- the flow chamber MC is separated from each bypass duct FC by a block 11a, 11b.
- the two blocks 11 a, 11 b are identical in shape and size in the embodiment of Figure 4 and arranged symmetrically with respect to the longitudinal axis A. In principle, however, they can also be designed differently and not aligned symmetrically. In non-symmetrical orientation and the shape of the flow chamber MC is not symmetrical.
- the shape of the blocks 11a, 11b shown in Figure 4 is merely exemplary and can be varied.
- the blocks 11a, 11b of Figure 4 have rounded edges.
- FC separators 105a, 105b are also provided in the form of indentations.
- an indentation 105a, 105b projects over a section of the peripheral edge of the bypass duct FC into the respective bypass duct FC and changes its cross-sectional shape at this point while reducing the cross-sectional area.
- the portion of the peripheral edge is chosen such that each indentation 105a, 105b (among other things) is directed towards the inlet port PN (oriented substantially parallel to the longitudinal axis A).
- the separators 105a, 105b may be oriented differently.
- the separation of the secondary flows 20 from the main flow 10 is influenced and controlled by the separators 105 a, 105 b. Due to the shape, size and orientation of the separators 105 a, 105 b, the amount flowing from the fluid idstrom in the bypass ducts FC, and the direction of the secondary flows 20 can be influenced. This in turn leads to an influencing of the exit angle of the exiting fluid flow 15 at the outlet port EX of the fluidic component 1 (and thus to an influence on the oscillation angle) as well as the frequency with which the exiting fluid flow 15 oscillates at the outlet port EX.
- the profile of the fluid flow 15 exiting at the outlet opening EX can thus be influenced in a targeted manner.
- the inlet port PN is preceded by a funnel-shaped projection 106, which tapers towards the inlet port PN (downstream).
- the flow chamber MC tapers, in the region of the outlet opening EX.
- the taper is formed by an exhaust passage 107 extending between the separators 105a, 105b and the exhaust port EX.
- the funnel-shaped projection 106 and the outlet channel 107 taper in such a way that only their width (that is to say their extent in the plane of the drawing in FIG. 4 perpendicular to the longitudinal axis A) decreases downstream.
- the taper does not affect the depth (ie the extension perpendicular to the plane of the drawing in FIG. 4) of the projection 106 and the outlet channel 107.
- the lug 106 and the outlet channel 107 may also taper in width and depth, respectively. Further, only the lug 106 may taper in depth or width while the outlet channel 107 tapers both in width and depth, and vice versa.
- the extent of the taper of the exhaust passage 107 affects the directivity of the fluid flow 15 exiting the exhaust port EX, and thus its oscillation angle.
- the shape of the funnel-shaped projection 106 and the outlet channel 107 are shown in FIG. 4 by way of example only. Here, their width decreases downstream each linear. Other forms of rejuvenation are possible.
- FIG. 4 schematically shows dashed lines which indicate a substantially linear arrangement of individual filter elements FE in each input and output region 6a, 6b, 8a, 8b. Not every point of the dashed lines necessarily corresponds to a filter element FE. Rather, the dashed lines should show only the basic course (linear in the embodiment of Figure 4) of the filter elements FE.
- the filter elements FC extend over the entire component depth.
- the filter elements FE are spaced from the blocks 11a, 11b and from the side walls of the flow chamber MC and the bypass channels FC.
- a filter element arrangement (a group of filter elements) extends over the entire width of the bypass channels FC, but may also be less wide.
- the filter element arrangements extend substantially transversely (this does not necessarily mean an angle of 90 °) to the flow direction of the secondary flows 20.
- the shape, size and number of filter elements FE can be selected according to various criteria. Thus, the type of fluid as well as the amount, shape and size of the particles with which the fluid is loaded can influence the shape, size and number of filter elements FE.
- the distance between the filter elements FE in the input regions 6a, 6b is smaller than that Distance between the filter elements FE in the output regions 8a, 8b.
- the filter elements FE are provided only in the input regions 6a, 6b and not in the output regions 8a, 8b.
- the filter elements FE can be positioned according to a mental continuation of the lateral walls 4a, 4b of the blocks 11a, 11b (or the flow chamber MC). In contrast to the filter position shown, the filter elements FE can also be positioned along the streamlines that arise in the flow situation in which the main flow on one of the lateral walls 4a, 4b of the blocks 11a, 11b (or the flow chamber MC) is applied.
- the filter elements FE can be arranged in the region of the inlet 6a, 6b of the bypass duct FC and / or in the region of the outlet 8a, 8b of the bypass duct FC at a position at which the largest flow velocity components (the main flow) alternatingly along and transversely to the mainstream occur.
- the person skilled in the art can determine this position by means of the usual methods known from the prior art, for example for a fluidic component without filter elements. It is also possible to position the filter elements FE in the region of the narrowest cross section of the bypass channels FC. In fluidic components with a separator 105 a, 105 b, this position is often between the separator 105 a, 105 b and the block 11 a, 11 b, which separates the flow chamber from the bypass channel FC.
- FIG. 20 shows three snapshots of a fluid flow for illustrating the flow direction (flow lines) of the fluid flow in the fluidic component 1 from FIG. 4 during an oscillation cycle (FIGS. A) to c)).
- the flow lines for two deflections of the exiting fluid flow 15 are shown, which correspond approximately to the maximum deflections.
- the angle which the exiting fluid flow 15 passes over between these two maxima is the oscillation angle ⁇ (FIG. 20).
- Figure b) shows the flow lines for a position of the exiting fluid flow 15, which is located approximately in the middle between the two maxima from Figures a) and c).
- the terms "upper bypass duct” and "lower bypass duct” are used. These relate only to the relative arrangement of the two bypass channels in Figure 4 (not to mandatory arrangement) and serve for better understanding.
- the fluid flow is conducted under pressure via the inlet port PN in the fluidic component 1.
- the fluid flow experiences hardly any in the area of the inlet opening PN Pressure loss, since it can flow undisturbed in the flow chamber MC.
- the main flow 10 of the fluid flow first flows along the longitudinal axis A in the direction of the outlet opening EX ( Figure a)).
- a single accidental or targeted disorder of the fluid flow is deflected laterally in the direction of the flow chamber MC facing side wall of a block 11 a, so that the direction of the fluid flow increasingly deviates from the longitudinal axis A until the fluid flow is deflected maximum.
- the so-called main flow 10 attaches to the side wall of the one block 11a and then flows along this side wall.
- a recirculation area 30 is formed in the area between the main flow 10 and the other block 11 b.
- the recirculation area 30 increases the more the main flow 10 is applied to the side wall of the one block 11a.
- the main flow 10 exits the outlet port EX at a time-varying angle with respect to the longitudinal axis A.
- the main flow 10 is applied to the side wall of the one block 11 a and the block 11 b facing recirculation area 30 has its maximum size.
- the fluid flow 15 exits with almost the greatest possible deflection from the outlet opening EX.
- a small portion of the fluid flow, the so-called secondary flow 20, separates from the main flow 10 and flows into the bypass ducts FC via their inlets 6a, 6b.
- the main flow 10 is not significantly larger than the portion of the fluid flow which flows into the bypass duct FC, which adjoins the block 11a, on the side wall of which the main flow 10 is applied.
- the secondary flow 20 in the upper bypass duct FC is significantly larger than the secondary flow 20 in the lower bypass duct FC, which is almost negligible.
- the deflection of the fluid flow into the bypass ducts FC can be influenced and controlled by separators.
- the secondary flows 20 (particularly the secondary flow 20 in the lower bypass duct FC) flow through the bypass ducts FC to their respective outlets 8a, 8b, imparting a pulse to the fluid flow entering the inlet port PN. Since the secondary flow 20 in the lower bypass duct FC is greater than the secondary flow 20 in the upper bypass duct FC, the pulse component resulting from the secondary flow 20 in the lower bypass duct FC predominates.
- the main flow 10 is thus urged by the pulse (the secondary flow 20 in the lower bypass duct FC) to the side wall of the block 11a.
- the recirculation area 30 facing the block 11b moves in the direction of the inlet 8b of the lower bypass duct FC, which disturbs the supply of fluid into the lower secondary duct FC.
- the pulse component resulting from the secondary flow 20 in the lower bypass duct FC decreases therewith.
- the recirculation area 30 facing the block 11b decreases, while a further (growing) recirculation area 30 is formed between the main flow 10 and the side wall of the block 11a. In this case, the supply of fluid in the upper bypass channel FC increases.
- the pulse component resulting from the secondary flow 20 in the upper bypass duct FC increases with it.
- the pulse components of the secondary flows 20 continue to approach in the further course, until they are the same size and cancel each other out.
- the incoming fluid flow is not deflected, so that the main flow 10 moves approximately centrally between the two blocks 11 a, 11 b and a fluid flow 15 exits almost without deflection of the outlet EX.
- Figure 20b) does not show exactly this situation, but a situation shortly before.
- FIG. 3 a snapshot of the transient flow process within the fluidic component 1 from FIG. 4 is shown in the partial images a) and b), the time of the recording being the same in both partial images.
- the speed of the fluid flow within the fluidic component is coded by gray scale.
- the velocity field within the fluidic component represents the normalized velocity of the fluid flow in the main flow direction (from the inlet port PN to the outlet port EX) with the maximum velocity in the main flow direction.
- the color black corresponds to the normalized velocity u / u m ax 0 and the color corresponds to white the normalized speed u / u m ax 1 and thus the maximum speed in the main flow direction.
- Partial image b) of FIG. 3 also shows flow lines for additional visualization.
- a region is recognizable where a streamline forms a closed curve (recirculation zone).
- transverse forces act on the filter elements FE or the flow here has high transverse components with respect to the main flow direction.
- the recirculation area shown in FIG. 3 is dissolved, whereby another recirculation area is created between the outlet opening EX and the filter elements FE at the entrance 6a of the left bypass channel FC in FIG.
- FIG. 7 shows three snapshots during an oscillation cycle in the partial images a) to c). Not all streamlines, but only streamlines with high flow velocity are shown.
- the filter elements FE by the Main flow 10 (at the entrance 6a, 6b), the secondary flow 20 (at the output 8a, 8b) as well as by the constantly changing recirculation areas 30 (at the entrance 6a, 6b) are cleaned.
- the sub-images b) and c) show by way of example how recirculation regions 30 move along the filter elements FE at the entrance 6a, 6b of the feedback channels FC and thereby change their shape. In this case, a filtered foreign body experiences a force acting from different directions.
- the fluidic component from FIG. 4 can also be regarded as a fluidic oscillator, with the (one-time) targeted change in direction of the main flow 10 leading to an oscillation of the main flow 10 in the flow chamber MC and the outflowing flow of fluid 15.
- the fluidic component 1 from FIG. 4 can not lose its function despite particles or foreign bodies, which are afflicted with the fluid flowing through the fluidic component 1.
- Another positive side effect is that the pressure loss in the fluidic component of Figure 4 compared to the known fluidic components with filter elements FE, which are located in the region of the inlet region PN ( Figures 1 and 2), is lower, since in the known design of the entire Fluid flow must flow through the filter elements FE.
- the filter elements FE may be formed as by spaced apart individual bodies, whereby a reduction in the cross section of the feedback channels FC is generated in order to achieve a filter function.
- the individual (filter) bodies may be at a distance from one another which is not so small that no fluid permeates through and / or is not so large that no filtering effect is achieved.
- the filter elements FE in the region of the feedback channels FC prevent a larger amount of particles or foreign bodies from entering the feedback channels FC. Thus, the deposition of foreign substances in the feedback channels FC is reduced or prevented. This risk of deposition in the feedback channels FC would exist without the filter elements, since the flow velocity in a feedback channel FC is usually considerably less than the flow velocity in the flow chamber MC. The foreign bodies could thus settle in the feedback channels and could not be flushed out.
- the fluid can independently clean the filter elements FE.
- a recirculation region 30 at the entrance of a bypass channel
- the secondary flow 20 at the outlet of the bypass channel
- the fluidic component 1 from FIG. 5 differs from that from FIG. 4 in particular by the arrangement of the filter elements FE.
- filter elements FE are respectively arranged in the region of the inputs 6a, 6b and the outputs 8a, 8b of the bypass channels FC.
- the filter elements FE in FIG. 5 are not arranged in a straight line (linear) but each follow a curved course (dashed lines in FIG. 5).
- the course at the two inputs 6a, 6b and at the two outputs 8a, 8b is mirror-symmetrical, with the course at the inputs 6a, 6b differing from the course at the outputs 8a, 8b.
- the filter elements FE are viewed at the inputs 6a, 6b in the flow direction of the secondary flows 20 (ie in the direction of an input 6a, 6b to the corresponding output 8a, 8b) according to a concave curvature and the filter elements FE at the outputs 8a, 8b arranged in the flow direction of the secondary flows 20 according to a convex curvature.
- the radii of curvature of the convex and the concave curvature are different and shown only by way of example in FIG.
- type of fluid for example, viscosity, density, surface tension, temperature
- type size, shape, deformability
- amount of particles the radii of curvature can be chosen differently.
- the radii of curvature may be identical or in each case different (for example in the case of non-symmetrical design of the fluidic component). Also, all curvatures may be convex or concave.
- FIG. 6 shows further examples of the course of the filter elements FE.
- the fluidic component 1 from FIG. 6 likewise differs from that from FIG. 4 in particular by the arrangement of the filter elements FE.
- the filter elements FE are viewed at the inputs 6a, 6b in the flow direction of the secondary flows 20 (ie in the direction of one Input 6a, 6b to the corresponding output 8a, 8b) each arranged according to a convex curvature, but the two convex curvatures differ from each other.
- the filter elements FE at the output 8a is arranged in the flow direction of the secondary flows 20 according to a concave curvature.
- the filter elements FE at the output 8b are arranged in a zigzag line.
- the geometry for the arrangement of the filter elements FE is selected, for example, such that the filter elements FE extend along the flow lines of the fluid flow.
- FIGS. 8 and 10 show two further embodiments of the fluidic component 1. These two embodiments differ from that of FIG. 4, in particular in that a flow divider (also called splitter) 3 is provided in the outlet channel 107. At the entrances 6a, 6b of the bypass ducts FC of the fluidic component 1 from FIG. 8, no separator is provided. In Fig. 10, the separators 105a, 105b have a tapered shape (as compared with the embodiment of Fig. 4) toward the inlet port PN. The shape of the blocks 11a, 11b is also different from the shape in FIG. 4. However, the basic geometric properties of these two embodiments are identical to those of the fluidic component 1 of FIG.
- the flow divider 3 is in the form of a triangular wedge widening in the fluid flow direction. Also, the exhaust passage 107 widens in the fluid flow direction. The wedge has a depth that corresponds to the component depth. (The component depth is constant over the entire fluidic component 1). Thus, the flow divider 3 divides the outlet duct 107 into two subchannels with two outlet openings EX and the fluid flow into two substreams which emerge from the fluidic component 1. As a result of the oscillation mechanism described in connection with FIG. 4, the two substorms pulsed out of the two outlet openings EX.
- the flow divider 3 extends substantially in the outlet channel 107, while in the embodiment of Figure 10 extends into the flow chamber MC.
- the shape and size of the flow divider 3 is in principle freely selectable depending on the desired application. Also, several flow dividers (transversely to the longitudinal axis A in the oscillation plane or transversely to the plane of oscillation of the Fluid flow) to divide the exiting fluid jet into more than two sub-streams.
- FIGS. 8 and 10 also show two further embodiments of the blocks 11 a, 11 b.
- these forms are to be understood as exemplary only and not exclusively in connection with the flow divider 3.
- the blocks 11 a, 11 b may be formed differently when using a flow divider 3.
- the blocks 11a, 11b of Figure 8 have a substantially trapezoidal basic shape, the downstream (in width) tapers and protrudes from the ends of each a triangular projection in the flow chamber MC.
- the blocks 11a, 11b of Figure 10 are similar to those of Figure 4, but have no rounded corners.
- the filter elements FE are arranged in FIGS. 8 and 10 (as well as in FIG. 4) along a straight line (dashed line) in the region of the inlets 6a, 6b and the outlets 8a, 8b of the bypass ducts FC.
- FIG. 9 corresponds to that of FIG. 10 and differs from the latter in that no flow divider is provided.
- FIG. Another embodiment of the invention is shown in FIG.
- the bypass ducts FC are separated from the flow chamber MC by the blocks 11a, 11b, the blocks 11a, 11b being substantially rectangular and each having a triangular projection formed at the end of the blocks 11a facing the inlet port PN, 11 b protrudes into the flow chamber MC.
- the flow chamber (except for the area where the triangular protrusions are formed) has a substantially constant width. Due to the shape of the blocks 11a, 11b, the individual sections of the bypass channels FC extend substantially parallel or perpendicular to the flow chamber MC.
- filter elements FE are provided, which are each arranged along a curved line. In this case, the line is viewed in the flow direction of the secondary flows 20 (ie, in the direction of an input 6a, 6b to the corresponding output 8a, 8b) arranged in accordance with a convex curvature.
- filter elements FE are provided which are each arranged along a straight line. The filter element arrangements extend essentially transversely (this does not necessarily mean an angle of 90 °) to the flow direction of the secondary flows 20.
- FIG. 12 to 19 show various known fluidic components which additionally have filter elements FE.
- the filter elements FE are arranged according to the invention at the inputs and outputs of the bypass channels FC ( Figures 12-17, 19).
- the bypass duct FC is short-circuited.
- an opening of the bypass channel in time alternation acts as an inlet and outlet.
- the upper opening of the bypass duct FC shown in Figure 15 is an inlet and thus the lower opening of the bypass duct FC shown in Figure 15 is an outlet until the (main) flow to the other wall side of the flow chamber MC is pressed. Thereafter, the respective openings change their function.
- a plurality of feedback channels FC are provided.
- the feedback channel FC in the area of the exhaust port EX increases the temporal pulsation, but does not act as a means for changing the main flow direction.
- the filter elements FE secure the function of the additional feedback channel FC.
- a bag chamber SK is provided as a means for targeted change of direction of the main flow.
- the entrance of the baghouse SK is also at the same time the exit of the baghouse SK.
- the filter elements FE are arranged in the input / output region of the baghouse SK.
- the fluidic components from FIGS. 12 to 19 are known without filter elements (or with filter elements in the region / downstream of the inlet opening of the fluidic components) from the following disclosures: EP 1 053 059 B1 (FIG. 12, partial images a) and b)), WO 80 / 00927 (Figure 12, panel c), Figure 13), EP 1 658 209 B1 ( Figure 14), DE 2 051 804 (Figure 15), DE 2 414 970 ( Figure 16), US 8,733,401 B2 ( Figure 17, drawing a) and b)), Review of some fluid oscillators, Harry Diamond Laboratories, Washington, 1969 ( Figure 18), A review of Fluidic Oscillator Development and Application for Flow Control, 43rd Fluid Dynamic Conference, June 24-27, 2013.
- the fluidic component (1) according to the invention is suitable for fluids contaminated with particles or foreign bodies, wherein it retains its function (formation of an oscillating fluid flow) despite the particles or foreign bodies which penetrate into the fluidic component and not through the particles clogged.
- the fluidic component (1) according to the invention additionally has a self-cleaning effect, since the filter elements are flushed out of (pressurized) fluid again.
- the filter elements FE can be cleaned by the main flow 10, the secondary flow 20 and by the constantly changing recirculation areas 30.
- the changing direction of the main flow 10 and in particular of the recirculation areas 30 during the oscillation process flows around and cleans the filter elements FE accordingly.
- a filtered foreign body experiences a force acting from different directions.
- This force can ensure that the foreign body dissolves again and is then removed from the main flow 10 or from a recirculation area 30.
- This effect is particularly pronounced at the entrance 6a, 6b of the feedback channels FC (see FIG. 7).
- Foreign matter filtered in the output region 8a, 8b of the feedback channels FC may be removed by the secondary flow 20.
- the presence of the filter elements only causes a lower pressure drop, since essentially only the secondary flow has to flow through the cross-sectional constriction.
- the fluidic component has an increased service life, since the integrated filter elements (and the bypass channels or bag chambers) do not clog up.
- the arrangement of the filter elements according to the invention reduces the costs and complexity compared to systems with upstream filter systems (arranged upstream of the inlet opening of the fluidic components).
- the fluidic component according to the invention is suitable for any field of application that works with fluids.
- the fluidic component according to the invention can be used for the cleaning technique.
- Another field of application is the surface wetting, the surface treatment or the change of the surface condition by powder application or by particle collision with the surface. Typical methods for this are blasting methods, such as the shot peening process.
- the fluidic component according to the invention can also be used in applications that have to do with fiber-containing fluids, such as in the paper industry.
- the filter elements FE can be used to influence the spray characteristic of the exiting fluid flow (outlet angle of the exiting fluid flow, oscillation frequency of the exiting fluid flow).
- the spacing of the filter elements in the individual input and / or output regions of the means for the targeted change in direction of the main flow may be the same but also different.
- the distance of the filter elements FE at the entrance 6a, 6b of a feedback channel FC be less than the distance between the filter elements FE, which are located at the output 8a, 8b of this feedback channel FC.
- the geometry of the fluidic components can basically be freely designed.
- the invention is applicable to all fluidic components which have at least one feedback channel FC or a bag chamber.
- FC feedback channel (bypass channel), means for directional change of main flow
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015108971 | 2015-06-08 | ||
| PCT/EP2016/063029 WO2016198449A1 (de) | 2015-06-08 | 2016-06-08 | Fluidischer oszillator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3302812A1 true EP3302812A1 (de) | 2018-04-11 |
| EP3302812B1 EP3302812B1 (de) | 2020-02-19 |
Family
ID=56292665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16733312.9A Active EP3302812B1 (de) | 2015-06-08 | 2016-06-08 | Fluidischer oszillator |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US10646886B2 (de) |
| EP (1) | EP3302812B1 (de) |
| CN (1) | CN107743422B (de) |
| DE (1) | DE202015104279U1 (de) |
| ES (1) | ES2784352T3 (de) |
| WO (1) | WO2016198449A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3816335A1 (de) | 2019-10-29 | 2021-05-05 | E.G.O. Elektro-Gerätebau GmbH | Sensorvorrichtung, verfahren zum betrieb einer solchen sensorvorrichtung und wasserführendes haushaltsgerät |
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| DE102016120454B4 (de) * | 2016-10-26 | 2025-05-28 | Bundesrepublik Deutschland, Vertreten Durch Den Bundesminister Für Wirtschaft Und Energie, Dieser Vertreten Durch Den Präsidenten Der Bundesanstalt Für Materialforschung Und -Prüfung (Bam) | Verfahren und Vorrichtung zur Untersuchung einer Probe und dessen Verwendung |
| DE102017206849A1 (de) * | 2017-04-24 | 2018-10-25 | Fdx Fluid Dynamix Gmbh | Fluidische Baugruppe |
| DE102017130765B4 (de) | 2017-12-20 | 2021-02-25 | Fdx Fluid Dynamix Gmbh | Ultraschallmessvorrichtung und Anwendungen der Ultraschallmessvorrichtung |
| US10823062B2 (en) * | 2018-07-27 | 2020-11-03 | Rohr, Inc. | Sweeping jet swirl nozzle |
| GB201905126D0 (en) * | 2019-04-11 | 2019-05-29 | Perlemax Ltd | Fluidic oscilators |
| US12595649B2 (en) | 2019-05-17 | 2026-04-07 | Kohler Co. | Fluidics devices for plumbing fixtures |
| US11739517B2 (en) | 2019-05-17 | 2023-08-29 | Kohler Co. | Fluidics devices for plumbing fixtures |
| DE102019120818A1 (de) * | 2019-08-01 | 2021-02-04 | Voith Patent Gmbh | Reinigungssystem und Saugwalze |
| DE102019212952B4 (de) * | 2019-08-28 | 2023-05-11 | Blanco Gmbh + Co Kg | Reinigungsvorrichtung und Verfahren zum Betrieb einer Reinigungsvorrichtung |
| US11347204B2 (en) * | 2020-01-20 | 2022-05-31 | The Boeing Company | Adjustable fluidic oscillators |
| CN111271346B (zh) * | 2020-01-23 | 2021-04-30 | 上海交通大学 | 一种子母流体振荡器 |
| DE102020103214B3 (de) * | 2020-02-07 | 2021-06-24 | Webasto SE | Heizgerät mit fluidischem Oszillator und Verwendung mehrerer fluidischer Oszillatoren für ein Heizgerät |
| CN111577657B (zh) * | 2020-04-29 | 2021-10-29 | 南京工业大学 | 带有无源自激励扫掠射流流动控制装置的压气机叶片 |
| CN111623505B (zh) * | 2020-05-25 | 2022-03-15 | 太原理工大学 | 一种自激振荡射流式增混换热出风装置 |
| CN111623010B (zh) * | 2020-06-04 | 2021-08-27 | 中国航空发动机研究院 | 一种脉冲扫射式流体振荡激励器 |
| CN111810454A (zh) * | 2020-07-17 | 2020-10-23 | 中国航空发动机研究院 | 一种基于自循环振荡射流的机匣、压气机及其扩稳方法 |
| CN112196833B (zh) * | 2020-12-07 | 2021-02-23 | 中国航发上海商用航空发动机制造有限责任公司 | 用于航空发动机压气机的展向分布式脉冲射流装置 |
| LU102636B1 (en) * | 2021-03-04 | 2022-09-05 | Stratec Se | Sensor for determining the oscillating frequency in a fluidic oscillating nozzle and a method using the sensor |
| CN113294262B (zh) * | 2021-07-08 | 2025-10-17 | 中国航空发动机研究院 | 一种基于自激发扫掠振荡射流的矢量喷管 |
| CN114370337B (zh) * | 2022-01-14 | 2023-05-23 | 中国航空发动机研究院 | 一种射流振荡器 |
| DE102022204734B4 (de) * | 2022-05-13 | 2024-02-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Hydraulischer Schalter und Bohrhammer |
| CN117146429A (zh) * | 2023-08-31 | 2023-12-01 | 浙江绿储科技有限公司 | 一种电加热装置及熔盐储能系统 |
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| US87020A (en) | 1869-02-16 | Improved motive-power for sewing- and other machines | ||
| US3185166A (en) * | 1960-04-08 | 1965-05-25 | Billy M Horton | Fluid oscillator |
| GB1297154A (de) | 1969-10-29 | 1972-11-22 | ||
| GB1453587A (en) | 1973-04-05 | 1976-10-27 | Atomic Energy Authority Uk | Flowmeters |
| US4463904A (en) | 1978-11-08 | 1984-08-07 | Bowles Fluidics Corporation | Cold weather fluidic fan spray devices and method |
| US4508267A (en) * | 1980-01-14 | 1985-04-02 | Bowles Fluidics Corporation | Liquid oscillator device |
| US6186409B1 (en) | 1998-12-10 | 2001-02-13 | Bowles Fluidics Corporation | Nozzles with integrated or built-in filters and method |
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| US7014131B2 (en) | 2002-06-20 | 2006-03-21 | Bowles Fluidics Corporation | Multiple spray devices for automotive and other applications |
| DE10339505A1 (de) | 2003-08-27 | 2005-03-24 | Siemens Ag | Zur Befestigung in einem Kraftfahrzeug vorgesehene Einrichtung zur Reinigung einer Scheibe oder einer Streuscheibe |
| EP1827703B1 (de) | 2004-11-01 | 2012-08-01 | Bowles Fluidics Corporation | Fluid-oszillator mit verbesserter kaltleistung |
| US8662421B2 (en) * | 2005-04-07 | 2014-03-04 | Bowles Fluidics Corporation | Adjustable fluidic sprayer |
| US8053260B2 (en) | 2006-11-17 | 2011-11-08 | General Electric Company | Large-area lighting systems and methods of making the same |
| US20110061692A1 (en) * | 2006-12-14 | 2011-03-17 | Shridhar Gopalan | Full coverage fluidic oscillator with automated cleaning system and method |
| US8702020B2 (en) | 2008-05-16 | 2014-04-22 | Bowles Fluidics Corporation | Nozzle and fluidic circuit adapted for use with cold fluids, viscous fluids or fluids under light pressure |
| US8091434B2 (en) | 2008-06-10 | 2012-01-10 | Avinash Shrikrishna Vaidya | Fluidic oscillator flow meter |
| US8733401B2 (en) | 2010-12-31 | 2014-05-27 | Halliburton Energy Services, Inc. | Cone and plate fluidic oscillator inserts for use with a subterranean well |
| CN103028516B (zh) | 2011-12-08 | 2015-11-18 | 宁波恒帅微电机有限公司 | 清洗喷嘴装置 |
| WO2016161349A1 (en) * | 2015-04-02 | 2016-10-06 | Dlhbowles, Inc., (An Ohio Corporation) | Double filter with pass-through and method for dynamically compensating for the inlet fluid contamination |
| DE102015222771B3 (de) | 2015-11-18 | 2017-05-18 | Technische Universität Berlin | Fluidisches Bauteil |
-
2015
- 2015-08-13 DE DE202015104279.5U patent/DE202015104279U1/de not_active Expired - Lifetime
-
2016
- 2016-06-08 EP EP16733312.9A patent/EP3302812B1/de active Active
- 2016-06-08 US US15/580,324 patent/US10646886B2/en active Active
- 2016-06-08 CN CN201680034677.4A patent/CN107743422B/zh active Active
- 2016-06-08 WO PCT/EP2016/063029 patent/WO2016198449A1/de not_active Ceased
- 2016-06-08 ES ES16733312T patent/ES2784352T3/es active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3816335A1 (de) | 2019-10-29 | 2021-05-05 | E.G.O. Elektro-Gerätebau GmbH | Sensorvorrichtung, verfahren zum betrieb einer solchen sensorvorrichtung und wasserführendes haushaltsgerät |
Also Published As
| Publication number | Publication date |
|---|---|
| US10646886B2 (en) | 2020-05-12 |
| US20180161786A1 (en) | 2018-06-14 |
| WO2016198449A1 (de) | 2016-12-15 |
| EP3302812B1 (de) | 2020-02-19 |
| CN107743422A (zh) | 2018-02-27 |
| CN107743422B (zh) | 2020-10-30 |
| ES2784352T3 (es) | 2020-09-24 |
| DE202015104279U1 (de) | 2016-12-21 |
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