Multi-head fluid oscillator

Abstract

The application discloses a multi-head fluid oscillator, and particularly provides a fluid device comprising: a housing configured to receive a water flow, and the housing comprising an outlet configured to dispense the water flow; a flexible member constructed of a first material and configured to be disposed within the housing, the flexible member including a base, a first leg extending from the base, a second leg extending from the base, and an opening extending through the first leg; and an insert comprised of a second material different from the first material, the insert configured to be disposed within the housing between the first leg and the second leg, the housing, the flexible member, and the insert configured to form at least one modular fluidic oscillator when the flexible member and the insert are disposed in the housing.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of priority to U.S. Provisional Application No. 63 / 527,450 (Docket No. 10222-23015A), filed on July 18, 2023, and U.S. National Application No. 18 / 763,740, filed on July 3, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application generally relates to sanitary ware with water delivery function. More specifically, the present disclosure relates to the application of fluid devices to improve the performance of sanitary ware. Background Art

[0004] Commercial and residential sanitary ware such as toilets, bidets, faucets, showers, whirlpool bathtubs and urinals rely on continuous water flow (e.g., steady-state flow, etc.) to perform working operations. For example, bidets rely on continuous water flow to clean users. Similarly, toilets rely on continuous water flow from the edge or sump of the toilet bowl to clean the surface of the toilet bowl and remove waste from the toilet bowl during flushing. In another example, faucets and sprayers use continuous water flow to provide cleaning action. However, continuous water flow does not always effectively achieve the intended goal of the product. For example, continuous water flow may not be enough to completely clean the surface. A larger amount of water or a higher intensity flow may be required to ensure that sufficient cleaning power is provided by the sanitary ware. Summary of the invention

[0005] The present application provides a fluid device, comprising:

[0006] a housing configured to receive a flow of water and comprising an outlet configured to distribute the flow of water;

[0007] a flexible member configured to be disposed within the housing, the flexible member comprising a base, a first leg extending from the base, a second leg extending from the base, and an opening extending through the first leg; and

[0008] an insert configured to be disposed between the first leg and the second leg within the housing,

[0009] Wherein, when the flexible component and the insert are arranged in the housing, the housing, the flexible component and the insert form at least one modular fluid oscillator.

[0010] The present application also provides a fluid device, comprising:

[0011] a housing configured to receive a flow of water and comprising an outlet configured to distribute the flow of water;

[0012] a flexible member comprised of a first material and configured to be disposed within the housing, the flexible member including a passage configured to convey a flow of water and at least one surface including a cavity formed therein; and

[0013] An insert, the insert being composed of a second material different from the first material, the insert being configured to be disposed in the housing, and a portion of the insert being configured to be disposed in the cavity, wherein when the flexible component is disposed in the housing, the housing, the flexible component and the insert are configured to form at least one modular fluid oscillator.

[0014] The present application also provides a fluid device, comprising:

[0015] a cylindrical housing configured to receive a flow of water;

[0016] an outer circumferential ring disposed in the cylindrical housing; and

[0017] An inner circumferential ring is disposed within the outer circumferential ring, the inner circumferential ring comprising at least one channel disposed along an outer surface of the inner circumferential ring, the outer circumferential ring and the inner circumferential ring together forming at least one modular fluid oscillator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The objects, features and advantages of the present disclosure will become more apparent when the following detailed description is read in conjunction with the accompanying drawings, in which:

[0019] Figure 1 and Figure 2 A perspective view of a toilet according to an example of the present disclosure is illustrated. Specifically, Figure 1 A toilet including a tank is shown, and Figure 2 A tankless toilet according to an exemplary embodiment of the present disclosure is illustrated.

[0020] Figure 3 A toilet including a bidet assembly according to one example of the present disclosure is illustrated.

[0021] Figure 4 A modular fluidic oscillator according to one example of the present disclosure is illustrated.

[0022] Figure 5 A modular fluidic oscillator according to another example of the present disclosure is illustrated.

[0023] Figure 6 A modular fluidic oscillator according to yet another example of the present disclosure is illustrated.

[0024] Figure 7 A partially exploded view of a fluidic device according to an example of the present disclosure is illustrated.

[0025] Figure 8 A partially exploded view of a fluidic device according to an example of the present disclosure is illustrated.

[0026] Fig. 9 The example according to the present disclosure is shown Figure 8 Fluid device.

[0027] Fig.10 A partially exploded view of a fluidic device according to one example of the present disclosure is illustrated.

[0028] Fig.11 An example according to the present disclosure is shown. Fig.10 The fluid device in a disassembled state.

[0029] Fig.12 A flow chart for assembling a fluidic device according to one example of the present disclosure is illustrated.

[0030] Fig.13 A perspective view of a fluidic device according to an example of the present disclosure is illustrated.

[0031] Fig.14 An example according to the present disclosure is shown. Fig.13 Cross-sectional view of a fluid device.

[0032] Fig.15 An example according to the present disclosure is shown. Fig.13 Exploded view of the fluidic device.

[0033] Fig.16 A perspective view of a fluidic device according to an example of the present disclosure is illustrated.

[0034] Fig.17 A perspective view of a fluidic device according to an example of the present disclosure is illustrated.

[0035] These figures illustrate certain exemplary embodiments of the present disclosure in detail. It should be understood that the present disclosure is not limited to the details and methods set forth in the specific embodiments or shown in the accompanying drawings. It should be understood that the terms used herein are for descriptive purposes only and should not be considered as limiting. DETAILED DESCRIPTION

[0036] The term "sanitary ware" refers to the equipment connected to the plumbing system of a house, a building, or another structure. The term "sanitary ware" can include a toilet, a bidet, a faucet, a shower head, a bathtub, a urinal, and a dishwasher. The terms "bathroom equipment" and "kitchen equipment" can more specifically refer to the sanitary ware of a separate type found in a bathroom or a kitchen, respectively, and these terms can be overlapping in some examples (e.g., faucets). Although each fluid device in the fluid device described herein can be described as being included in a single type of sanitary ware, it should be understood that the disclosure is not limited thereto, and each fluid device in the fluid device described herein can be included in any type of sanitary ware or used in combination with any type of sanitary ware. For example, the fluid device described about the bidet can be included in a shower head, a faucet, a toilet, a dishwasher, etc. or used in combination with them.

[0037] The sanitary ware includes one or more modular fluid oscillators or structures configured to control the flow of water through one or more nozzles (e.g., fluid outlets, outlet openings, etc.) of the sanitary ware. The modular fluid oscillator includes interconnected flow channels (e.g., passages, etc.), which include geometric shapes that can be changed to selectively control the flow of water ejected from the modular fluid oscillator. For example, the channel can be configured to provide a pulsating water flow or an oscillating water flow to achieve improved water delivery performance through the sanitary ware, which advantageously improves the cleaning ability of the sanitary ware. Alternatively or in combination, the modular fluid oscillator can be configured to control the timing of the flow through one or more nozzles. Multiple modular fluid oscillators can also be interconnected by flow channels.

[0038] Figure 1 and Figure 2 A toilet according to an exemplary embodiment of the present disclosure is illustrated. Figure 1 An exemplary embodiment of a skirt-type toilet 10 is illustrated, which includes a water tank 11, a base 21 (or a base), and a seat assembly 17. The water tank 11 may include a reservoir 12 for storing water used during an operation (or flushing) cycle, a lid (or a cover) 13 for providing selective access to the reservoir 12, and an actuator 14 configured to start an operation cycle when activated. The actuator 14 or flushing mechanism may be a button configured to be activated when pressed (or pulled) a predetermined distance or when touched, a lever configured to be activated when rotated a predetermined angular travel, or any suitable device configured to be activated based on a user's input manipulation.

[0039] It should be noted that the shape and configuration of the water tank, base, seat assembly, and internal components (including drainage channels and other features) may be different from the embodiments shown and described herein, and the embodiments disclosed herein are not intended to be limiting. It should be noted that the various components of the toilet can be made of vitreous materials such as clay. It should be noted that the various components of the toilet can be polymeric and / or overmolded or otherwise fixed to the toilet. It should be noted that, for example, although the exemplary embodiment of the toilet 10 is shown as being constructed with a water tank 11, which is formed separately from the base 21 and is later connected to the base, the water tank can be formed integrally with the base as a one-piece design. In other words, the toilet can be a one-piece design, a two-piece design, or have any suitable configuration. The toilet disclosed herein can have a variety of skirt toilet configurations, and all such configurations are intended to be included in this article. Therefore, the following description of various toilet features is intended to be an illustration of only one possible embodiment, and those who review this specification should understand that similar concepts or features can be included in various other embodiments.

[0040] The water tank 11 may include an inlet opening configured to receive water from a connected water supply, such as from a hose (e.g., a pipeline, a pipe). The water tank 11 may also include an inlet valve assembly or other device configured to control the flow of water from the water supply through the inlet opening into the water tank. A float device may be provided in the water tank 11, which is used to control the inlet valve assembly, such as by opening the valve after an operating cycle to refill the reservoir 12 of the water tank 11 and closing the valve when the water in the reservoir 12 reaches a preset volume or height. The water tank 11 may also include an outlet opening configured to transfer (e.g., guide) water stored in the reservoir 12 of the water tank to the base 21 when the actuator 14 is activated. The base 21 may include a toilet bowl 23. The water tank 11 may include an outlet valve assembly or other device configured to control the flow of water from the reservoir 12 through the outlet opening into the base 21.

[0041] The base 21 (or base) of the toilet 10 can include a wall 22 of any suitable shape configured to form a bowl 23 having an opening formed by an upper rim at the top of the opening. The base 21 can also be configured to include multiple walls of different shapes that together form a bowl having an opening formed by a rim. The wall 22 of the base can extend downwardly and / or rearwardly from the bowl 23 to form a lower portion 25 configured to support the base 21 and the toilet 10. The lower portion 25 can be formed by an end (e.g., a lower rim) of the wall 22, or can include a member extending generally in a horizontal plane from one or more ends of the wall. The base 21 can also include a top member 24 extending between two sides of the wall 22 (or between two opposing walls) and disposed behind (or behind) the bowl 23, wherein the top member 24 forms a platform for supporting a water tank 11, such as the bottom surface of the reservoir 12 of the water tank 11. The top member 24 may include an inlet opening that may be aligned with an outlet opening of the tank 11, such as when the tank 11 is coupled to the base 21 (or resting on the base 21), wherein when the toilet is activated by the actuator 14, water is selectively transferred (e.g., directed) from the tank 11 through the outlet opening of the tank to the base 21 via the inlet opening of the base 21. The outlet valve assembly may control the flow of water from the tank to the base. The toilet may also include a gasket or seal disposed between the tank 11 and the base 21 to prevent leakage. For example, a gasket is disposed between the outlet opening of the tank and the inlet opening of the base to prevent leakage between the tank and the base.

[0042] The platform or upper surface formed by the top member 24 of the base 21 can also be configured to couple the seat assembly 17 to the base 21 of the toilet 10. For example, the top member 24 can include one or more openings, wherein each opening is configured to receive a fastening device (e.g., a bolt, a screw, etc.) to couple (e.g., attach) the seat assembly 17 to the top member 24 of the base 21. As another example, the top member 24 can include one or more fastening devices (e.g., bolts, recessed nuts, etc.) integrally formed in the top member 24 (i.e., already configured to connect or couple to the base 21), wherein the fastening device can be used to couple or secure at least a portion of the seat assembly 17 to the base 21. The seat assembly 17 can include a hinge, a hinge shoulder configured to receive a fastener, a seat coupled to the hinge, and a cover coupled to the hinge.

[0043] The bowl 23 of the base 21 can be configured to include a receptacle (e.g., a sump) and an outlet opening, wherein water and waste are collected in the receptacle until they are removed through the outlet opening, such as when the actuator 14 is activated. The base 21 can also include a base internal passage, such as a drain channel, that connects the outlet opening or discharge outlet of the bowl 23 to a drain or sewer. The passage or drain channel generally includes a first portion, a second portion, and a weir that separates the first portion and the second portion. The first portion of the passage can extend from the outlet opening of the bowl 23 at an upwardly inclined angle relative to the weir. The second portion of the passage can extend downward from the weir to an exit device, such as a drain or sewer.

[0044] Between operating cycles of toilet 10 (e.g., flush cycles), water (and waste) is collected in a first portion of the trapway (except for the receptacle of the bowl) such that the weir prohibits water from passing through the weir and entering the second portion of the trapway. The flush cycle may begin when actuator 14 is activated. When the actuator is activated, additional water may be discharged into the bowl 23 of base 21, causing a flushing action and causing waste to be removed through a trapway. For example, water may be discharged into the bowl from one or more rim outlets located in or below the rim of the toilet and / or from a sump spout disposed in a sump of the toilet (e.g., the first portion of the trapway). The rim outlet and / or sump spout may include one or more fluid devices described herein. The flush cycle may include the generation of a siphon to assist in the flushing action and waste removal.

[0045] Seat assembly 17 can include covering member 18 (e.g., lid), seat member 19 (e.g., ring member), and hinge. Seat member 19 can be configured to include an annular member surrounding an opening, wherein the annular member provides a seating surface for the user of toilet 10. Seat member 19 can also be pivotally connected (e.g., attached) to a hinge, wherein the seat member can rotate (or pivot) around the hinge such as between a first lowering or seating position and a second raising or upright position. Covering member 18 can be configured to be circular, oval, or any other suitable shape. Typically, the profile or shape of the outer surface of the covering member will be configured to match the profile of the outer surface of the seat member (i.e., substantially similar) to improve the aesthetics of the seat assembly and toilet. Covering member 18 can also be connected to a hinge, wherein the covering member can rotate (or pivot) around the hinge such as between a first lowering or downward position and a second raising or upright position. When the cover member 18 is in the downward position, the cover member 18 can be disposed above the seat member, thereby covering the opening of the seat member 19 and hiding the interior of the toilet bowl 23 of the base 21. The cover member 18 can be configured to rest against the outer side surface of the tank 11 when the cover member 18 is in the upright position, so that the cover member 18 remains in the upright position for a user to sit on the seat member 19.

[0046] Figure 2 A non-skirted toilet 20 is illustrated according to another exemplary embodiment of the present disclosure. Internal components including the trapway 15 are visible in the base 21 of the non-skirted toilet 20. It should be noted that the devices, methods, and systems described herein can include and / or be used with both skirted and non-skirted toilets. It should also be noted that the devices, methods, and systems described herein can include or be used with both toilets with tanks and tankless toilets. A water line can supply water to a tankless toilet during a flush cycle.

[0047] Overall reference Figure 1 and Figure 2 , toilets 10 and 20 rely on a continuous flow of water from the rim or sump of the toilet to clean the surface of the toilet bowl and remove waste from the toilet during flushing. Thus, in some examples, a flow of water supplied from the rim (e.g., through a rim outlet) and / or a flow of water supplied from the sump (e.g., through a sump spout) can be supplied by one or more fluid devices according to the present disclosure, thereby improving the cleaning (e.g., bowl flushing) and / or waste removal performance of toilets 10 and 20.

[0048] Figure 3 A toilet 30 including a bidet assembly 40 is illustrated according to one example of the present disclosure. Figure 3 As shown in FIG. 1 , the toilet 30 includes a base 31 having a bowl 32 and a seat assembly 33. As shown in the figure, Figure 3 The toilet 30 includes a water tank 36, however, as described above, the present disclosure is not limited thereto, and the toilet according to one example of the present disclosure may be a water tankless toilet. Figure 3 As shown in FIG. 4 , the bidet assembly 40 can be coupled to the upper surface 34 of the base 31. For example, Figure 3 As shown in the figure, the bidet assembly 40 can be disposed between the upper surface 34 of the base 31 and the seat assembly 33. Specifically, fasteners (e.g., bolts, screws, rivets) can extend through the hinge shoulder 35 and through the mounting holes of the bidet assembly 40 into the base 31, thereby coupling the bidet assembly 40 and the seat assembly 33 to the base 31.

[0049] In some examples, the toilet 30 can be manufactured to include the bidet assembly 40. For example, the base 31 and the bidet assembly 40 can be formed as a single integral component. In other examples, the bidet assembly 40 can be manufactured by the manufacturer of the toilet and attached to the base 31. However, it is also contemplated that the bidet assembly 40 can be sold as an aftermarket add-on product that can be installed on the toilet by a party other than the manufacturer of the toilet.

[0050] Reference Figure 3 , the bidet assembly 40 includes a supply hose 41, a base 42 and a spray bar 43. The base 42 can be configured to contact the upper surface 34 of the base 31, so as to support the bidet assembly 40 when the bidet assembly is installed or connected to the toilet 30. The base 42 can be made of plastic such as polypropylene, polyethylene, polycarbonate or other similar materials. The bidet assembly 40 includes a supply hose 41 configured to supply water to the bidet spray bar 43. In some examples, the supply hose 41 can be in fluid communication with the water tank 36 of the toilet to supply water from the water tank 36 during the flushing cycle. In some examples, for example, when a tankless toilet or a line pressure toilet is used, the supply hose 41 can be in fluid communication with the plumbing system of a house, building or other structure to receive water from the plumbing system. In these examples, a valve can be used to control the flow of water from the outlet of the pipe network out of the spray bar 43. In some examples, base 42 may include a channel formed therein configured to convey or direct water flow from supply hose 41 to an inlet of bidet boom 43. A valve may be located, for example, in base 42 or bidet boom 43 to selectively control water flow from the plumbing network.

[0051] like Figure 3 , bidet assembly 40 includes a spray bar 43 extending from a base 42 (e.g., downward). In some examples, a flexible or elastic sleeve may be provided between base 42 and spray bar 43. When bidet assembly 40 is coupled to toilet 30, spray bar 43 may extend into the toilet bowl 32 of toilet 30. Spray bar may include an inlet and include a spray bar channel extending from the inlet to a spray bar outlet, the spray bar outlet being configured to distribute water. The spray bar outlet may be disposed at or near the distal end of the spray bar. The spray bar outlet may include one or more fluid devices described herein, the one or more fluid devices being configured to regulate the water flow distributed from the spray bar outlet. For example, the fluid device may be configured to provide an oscillating or pulsating water flow.

[0052] The spray bar 43 of the bidet assembly 40 can be operable so as to be moved by the user. Specifically, the spray bar 43 can be moved to change the position of the spray bar and thus change the position where water is dispensed from one or more outlets of the bidet spray bar 43. In some examples, the bidet spray bar 43 can be mechanically coupled to a control joint such as a joystick, a lever, a paddle, etc., which is configured to change the position of the spray bar 43 by moving one or more connecting rods such as a lever, a rope, etc. disposed between the control joint and the spray bar 43. In other examples, one or more electric motors can be configured to change the position of the spray bar. One or more electric motors can be connected to a controller. The controller can be connected to or wirelessly connected to a user input device through a wired connection, and the user input device is, for example, a touch screen, a button, a sensor, etc., and the user input device is configured to receive one or more instructions for controlling the position of the spray bar 43. The controller can be configured to send one or more signals and / or currents to one or more electric motors to move the spray bar 43.

[0053] Reference Figure 4 , illustrates a modular fluid oscillator layout according to an example of the present disclosure. An internal cross section of a fluid oscillator 100 is illustrated. The fluid oscillator 100 includes a main flow channel 110, one or more feedback channels 120, an island partition 121, a mixing chamber 125, an outlet 127, and one or more geometric features at the outlet 127 of the fluid oscillator that cause the fan-shaped output water flow to oscillate, fluctuate, or pulsate within a predetermined angular range 128. Figure 4 , the repeating pattern of water includes a back-and-forth pattern around the horizontal direction. However, the orientation of the fluid device can be changed (e.g., rotated 90 degrees) to provide a back-and-forth pattern around the vertical or another direction. The main flow channel 110 may include a narrowed passage that serves as an amplifier of the water flow velocity. For example, the position of the island separator 121 can be adjusted to produce such a narrowed passage and amplifier. Additional, fewer or different components can be used.

[0054] The fluidic oscillator 100 includes a main flow channel 110 at least partially parallel to one or more feedback channels 120. Figure 4 As shown, each of the feedback passages 120 is substantially partially parallel to the main flow passage 110, and each of the feedback passages 120 provides a path in an opposite direction (upstream) of the main flow passage (downstream).

[0055] The fluid oscillator 100 includes at least one island-shaped partition 121 configured to separate the mixing chamber 125 from each feedback channel 120. Figure 4As illustrated in FIG. 1 , the island-shaped partition 121 may partially or completely extend from the bottom of the fluidic oscillator 100 to the top of the fluidic oscillator 100 .

[0056] The fluid oscillator 100 includes a mixing chamber 125 connected to the main flow channel 110 and to each feedback channel in the feedback channel 120. The main flow channel includes a pressurized fluid to generate a spatial oscillation (back and forth fan-like sweep) jet. No power supply is required. However, the input fluid (e.g., a water source) is provided under pressure or provided under potential energy from gravity. The diameter of the tube can be selected to increase or reduce the input fluid to a desired pressure. The curved wall of the mixing chamber 125 provides a path for the fluid flow to exhibit the Coanda effect, in which the flow attaches itself to the wall of the mixing chamber and changes direction because the flow remains attached when the curved wall of the mixing chamber 125 bends away from the main flow channel away from the initial direction. In addition or in an alternative, the mixing chamber 125 provides one or more pockets for forming a separation flow, which is triggered from the output from the corresponding feedback channel 120. The separation flow pushes the main flow away from the wall of the mixing chamber 125 so that the oscillation is realized in the output of the fluid oscillator 100.

[0057] The fluid oscillator includes one or more geometric features at the outlet of the fluid oscillator, which cause the fan-shaped output water flow 129 to oscillate within a predetermined angular range 128. The fluid oscillator 100 is self-sustaining and self-inducing by virtue of the shapes of the main flow channel 110, the feedback channel 120, the island partition 121 and / or the mixing chamber 125.

[0058] In addition, one or more features of the outlet of the fluidic oscillator 100 impose restrictions (diffusers) on the fan-shaped output water flow 129 to oscillate within the predetermined angular range 128. The restrictions can be geometric features of the outlet of the fluidic oscillator 100. In one example, the restrictions are provided by a geometry including a neck 130 disposed at the outlet 127 of the fluidic oscillator 100. The neck 130 limits the predetermined angular range 128 by blocking some of the water flow that would escape from the mixing chamber 125 to the outlet of the fluidic oscillator 100 if unimpeded. The neck 130 can also set a specific oscillation frequency due to reflection of the fluid back into the fluidic oscillator 100. The neck 130 can be omitted to expose a larger outlet of the fluidic oscillator 100.

[0059] In one example, the restriction is provided by a geometry including a recessed portion 131 configured to cause flow outside the neck 130 to flow back into the mixing chamber 125. Fluid that would otherwise have flowed to the outlet of the fluidic oscillator 100 flows into the recessed portion 131 and then back into the rotating flow of the mixing chamber 125 as an additional feedback input to the mixing chamber 125. Therefore, the recessed portion 131 can be referred to as an auxiliary feedback of the fluidic oscillator 100.

[0060] Reference Figure 5 , illustrates a modular fluid oscillator 200 layout according to another example of the present disclosure. An internal cross section of a fluid oscillator is illustrated. The fluid oscillator 200 includes an inlet channel 210, a joining chamber 220, two outlet channels 230, a resonant channel 240, and one or more geometric features in the joining chamber that cause the output flow of water to oscillate, fluctuate, or pulsate between the outlet channels 230. The repeated water pattern includes a back-and-forth pattern between the outlet channels 230. In some examples, the inlet channel may include a narrowed passage that acts as an amplifier for the water flow velocity. Additional, different, or fewer components may be used.

[0061] The fluid oscillator 200 includes a joining chamber 220 disposed at the end of the inlet channel 210. The joining chamber 220 communicates with the inlet channel 210, the outlet channel 230, and the resonance channel 240. The joining chamber 220 includes one or more geometric features such as a concave portion 221 configured to cause the output flow of water to oscillate between the outlet channels 230.

[0062] The fluid oscillator 200 includes a resonance channel 240 in communication with the bonding chamber 220. Figure 5 As shown in FIG. 1 , the resonant channel can be a circular channel fluidly coupled to the joining chamber 220 at two locations facing each other. The inlet channel includes a pressurized fluid to produce a spatially oscillating jet. No power source is required. However, the input fluid (e.g., a water source) is provided under pressure or under potential energy from gravity. The diameter of the tube can be selected to increase or decrease the input fluid to a desired pressure. The curved wall of the recessed portion 221 of the joining chamber 220 creates instability in the flow, causing a portion of the flow entering the joining chamber to flow into the resonant channel.

[0063] Reference Figure 6, illustrates a modular fluid oscillator 300 according to another example of the present disclosure. An internal cross section of the fluid oscillator 300 is illustrated. The fluid oscillator includes an island 310, an inlet channel 320, a mixing chamber 330, a convex wall 340, an outlet wall 350, an outlet 360, and one or more geometric features at the outlet 360 of the fluid oscillator, the one or more geometric features causing the fan-shaped output of water to oscillate, fluctuate, or pulsate within a predetermined angular range 370. Figure 6 As shown, the repetitive pattern of water includes a back-and-forth pattern around the horizontal direction. However, the orientation of the fluid device can be changed (e.g., rotated 90 degrees) to provide a back-and-forth pattern around the vertical or another direction. The fluid oscillator 300 includes an inlet channel 320 arranged on two sides of the island 310. The inlet channel 320 can include a narrowed passage used as an amplifier of the water flow speed. For example, the position, size and / or shape of the island 310 can be adjusted to create this narrowed passage and amplifier. Additional, different or fewer components can be used.

[0064] The fluid oscillator 300 includes an island 310 and inlet channels 320 disposed on two opposite sides of the island 310. Figure 6 , the inlet channels 320 may be substantially partially parallel to each other. The inlet channels 320 may each supply a fluid flow to the mixing chamber 330. Each of the inlet channels may provide a path in the same direction (eg, upstream).

[0065] The fluid oscillator 300 includes an island configured to separate an inlet channel 320 from a mixing chamber 330. Figure 6 As shown in FIG. 1 , the island 310 may partially or completely extend from the bottom of the fluidic oscillator 300 to the top of the fluidic oscillator 300 .

[0066] The fluid oscillator 300 includes a mixing chamber 330 connected to each of the inlet channels 320. The inlet channel includes a pressurized fluid to generate a spatial oscillation (back and forth fan-like sweep) jet. No power supply is required. However, the input fluid (e.g., a water source) is provided under pressure or provided under the potential energy from gravity. The diameter of the tube can be selected to increase or reduce the input fluid to a desired pressure. The curved wall of the mixing chamber 330 provides a path for the fluid flow to exhibit the Coanda effect, in which the flow attaches itself to the wall of the mixing chamber 330 and changes direction, because the flow remains attached when the curved wall of the mixing chamber 330 bends away from the initial direction of the inlet channel 320. In addition or in an alternative, the mixing chamber 330 may include one or more pockets 380 for forming a separation flow, which is triggered from the output from the corresponding inlet channel 320. The separation flow can push the main flow away from the wall of the mixing chamber so that the oscillation is realized in the output of the fluid oscillator 300. Additionally or alternatively, the fluidic oscillator 300 may include one or more raised walls 340 that adjust the path of the output of the corresponding inlet channel 320. The raised wall 340 can direct the flow (e.g., from the inlet channel) into the pocket 380, thereby increasing the separation flow. In some examples, the raised wall can increase the separation flow and, therefore, increase the frequency of the output of the fluidic oscillator 300.

[0067] The fluidic oscillator 300 includes one or more geometric features at the outlet of the fluidic oscillator that cause the fan-shaped output of the water stream 371 to oscillate within a predetermined angular range 370. The fluidic oscillator 300 is self-sustaining and self-inducing by virtue of the shape of the island 310, the inlet channel 320, and / or the mixing chamber 330.

[0068] In addition, one or more features of the outlet 360 of the fluid oscillator 300 impose restrictions (diffusers) on the fan-shaped output water flow 371 to oscillate within the predetermined angular range 370. The restrictions can be geometric features of the outlet of the fluid oscillator 300. In one example, the restrictions are provided by a geometric shape including a neck 361, which is disposed at the outlet 360 of the fluid oscillator 300. In some examples, the two outlet walls 350 of the fluid oscillator 300 can define the neck 361 of the fluid oscillator 300. Therefore, the size and / or shape of the neck 361 can be changed by changing the size, shape and / or position of the outlet wall 350. Since the fluid is reflected back into the fluid oscillator 300, the neck 361 can also set a specific oscillation frequency.

[0069] Reference Figure 7, illustrates a fluidic device 400 according to an example of the present disclosure. The fluidic device 400 includes a housing 410, a receiving portion or flexible member 420, and an insert 430. The flexible member 420 and the insert 430 may be disposed in the housing 410 or configured to be inserted into the housing 410. The housing 410, the flexible member 420, and the insert 430 may together form a fluidic device 400 including one or more modular fluidic oscillators. For example, the housing 410, the flexible member 420, and the insert 430 may form one or more of the above-mentioned fluidic oscillators 100, the fluidic oscillator 200, and the fluidic oscillator 300.

[0070] Housing 410 is configured to receive and direct (e.g., convey) a fluid flow. Figure 7 As shown in FIG. 4 , the housing 410 may be in the shape of a hollow parallelepiped. Figure 7 As shown in FIG. 4 , two opposite ends of the housing may be open. In other examples, only one end of the housing may be open. The shape of the housing 410 may vary. For example, the housing 410 may be in the shape of a hollow cylinder, as described below with reference to FIG. Fig.10 As described. The housing 410 includes an interior chamber 411. The flexible member 420 and the insert 430 can be disposed or configured to be disposed in the interior chamber 411 of the housing 410. In some examples, the housing 410 can be constructed of plastic such as polypropylene, polyethylene, polycarbonate, or other similar materials.

[0071] In some examples, the fluid device 400 may also include an inlet or supply component 440. The supply component 440 may include a tapered portion 441 configured to be inserted into the interior chamber 411 of the housing 410. In some examples, an interference fit connection may be used to couple the supply component 440 and the housing 410. For example, the tapered portion 441 of the supply component 440 may be press-fit or snap-fit ​​into the interior chamber 411 of the housing 410. When the tapered portion 441 of the inlet or supply component is inserted into the housing 410, a watertight seal may be formed. For example, a tolerance stack-up may be used to ensure a watertight seal between the supply component 440 and the housing 410. The inlet or supply component 440 includes a conduit 442 or channel configured to supply a fluid (e.g., a water flow) into the interior chamber 411 of the housing 410. In some examples, the conduit 442 may include a narrowed passage that serves as an amplifier of the velocity of the fluid flow entering the interior chamber 411.

[0072] The receiving portion or flexible member 420 can be disposed or configured to be disposed in the interior chamber 411 of the housing 410. In some examples, such as Figure 8, the receiving portion or flexible member 420 can be generally u-shaped, the u-shape including a base 421, a first leg 422 extending from the base 421, and a second leg 423 extending from the base 421. The receiving portion or flexible member can include a hollow section 424 disposed between the first leg 422 and the second leg 423. The hollow section 424 can be configured to receive the insert 430. The flexible member 420 can include an opening 425, a passage or a channel extending through the first leg 422. The opening 425 can be configured to guide the fluid flow, for example, to guide the fluid flow from the interior chamber 411 of the housing 410 to the hollow section 424 of the flexible member 420. The size, shape and position of the opening 425 can vary. In some examples, the opening can be circular, and the opening extends through the first leg 422 at or near the center of the first leg 422. In another example, the opening can be rectangular and extend through the first leg at or near the bottom of the first leg 422 (e.g., near the base 421). Figure 7 As illustrated in FIG. 4 , the second leg 423 may not include any opening extending through the second leg 423 .

[0073] The receiving portion or flexible member 420 can be made of a first material. For example, the flexible member 420 can be made of rubber, silicone rubber, flexible polyvinyl chloride (PVC), or a rubber-like resin. For example, the flexible member can be made of a thermoplastic elastomer (TPE) such as a thermoplastic vulcanizate (TPV), a styrene block copolymer (TPE-S), a thermoplastic polyolefin (TPE-O), a thermoplastic polyurethane (TPE-U), a thermoplastic copolyester (TPE-E), a melt-processable rubber (MPR), a thermoplastic polyether block amide (TPE-A), ethylene vinyl acetate (EVA), or a combination thereof.

[0074] The insert 430 may be disposed in the housing 410, or the insert 430 may be configured to be disposed in the housing 410. Specifically, the insert 430 may be disposed in the hollow section 424 of the receiving portion or the flexible member 420, or the insert 430 may be configured to be inserted into the hollow section 424. In some examples, as Figure 7 As illustrated in FIG. 4 , the insert 430 may be completely disposed in the flexible component 420 . In other examples, only a portion of the insert 430 may be disposed or configured to be disposed in the flexible component 420 .

[0075] The size and shape of insert 430 can vary. In some examples, such as Figure 7As shown in the figure, the insert 430 can be in the shape of a prism or a parallelepiped. In other examples, the insert can be in the shape of a cylinder. The insert 430 includes at least one surface 431 or face, and the at least one surface 431 or face includes one or more walls 432 protruding from the at least one surface 431 or face. One or more walls 432 can form an element or feature of a modular fluid oscillator (e.g., modular fluid oscillator 100, modular fluid oscillator 200, modular fluid oscillator 300) on the surface 431 of the insert 430. For example, the wall 432 can form a channel or passage of one of the modular fluid oscillators 100, modular fluid oscillator 200, modular fluid oscillator 300. Specifically, the insert 430 and one or more walls 432 can form a part of the modular fluid oscillator. The surface 431 of the insert 430 including the one or more walls 432 can be arranged adjacent to the surface of one of the first leg 422 or the second leg 423. Thus, the flexible member 420 and the insert 430 including one or more walls 432 may together form a modular fluidic oscillator (e.g., modular fluidic oscillator 100, modular fluidic oscillator 200, modular fluidic oscillator 300). Specifically, the flexible member 420 and the insert 430 including the wall 432 may define a flow path of the modular fluidic oscillator (e.g., modular fluidic oscillator 100, modular fluidic oscillator 200, modular fluidic oscillator 300).

[0076] The housing 410 is configured to receive a receptacle or flexible member 420 and an insert 430. In some examples, the housing 410, in combination with the flexible member 420 and the insert 430, can define a flow path of a modular fluidic oscillator (e.g., modular fluidic oscillator 100, modular fluidic oscillator 200, modular fluidic oscillator 300). Specifically, in some examples, the housing 410 can define one or more walls or features of the modular fluidic oscillator (modular fluidic oscillator 100, modular fluidic oscillator 200, modular fluidic oscillator 300). Additionally, the housing 410 can be configured to fix or maintain the position of the flexible member 420 and the insert 430 within the housing 410. Specifically, when the housing 410, the flexible member 420, and the insert 430 are under the pressure of the fluid supplied to the fluid device 400, the housing 410 can maintain the position of the flexible member 420 and the insert 430.

[0077] When the receiving portion or flexible member 420 and the insert 430 are inserted into the housing 410, a waterproof seal can be formed between the housing 410, the flexible member 420, and the insert 430. For example, a tolerance stack-up can be used to ensure a waterproof seal between the housing 410, the flexible member 420, and the insert 430. In some examples, the flexible member 420 can be configured to deform when it is inserted into the housing 410. In some examples, the flexible member 420 can deform to provide a waterproof seal between the housing 410, the flexible member 420, and the insert 430.

[0078] In some examples, such as Figure 7 As shown in FIG. 4 , the insert 430 may include two or more surfaces 431 including walls 432 protruding from the two or more surfaces 431, the walls 432 forming elements or features of the modular fluidic oscillator. In some examples, such as Figure 7 431 , in some examples, surfaces 431 can be disposed on opposite sides of insert 430. Each of the two or more surfaces 431 can be disposed adjacent to and / or abutting a surface of a leg (e.g., leg 422, leg 423) of flexible member 420. In these examples, insert 430 can include one or more recesses or conduits 434 configured to convey fluid flow around insert 430, such as conveying fluid flow from a first surface 431 including one or more walls 432 configured to form an element of a modular fluidic oscillator to a second surface 431 including one or more walls 432 configured to form an element of a modular fluidic oscillator. In some examples, recesses or conduits 434 can be configured to convey fluid flow to opposite sides of insert 430. Each of the surfaces 431 including the wall 432 may also include an outlet feature 433 configured to form an outlet of a modular fluidic oscillator (e.g., modular fluidic oscillator 100, modular fluidic oscillator 200, modular fluidic oscillator 300). Each of the surfaces 431 including the wall 432 may be configured to be combined or assembled with the flexible member 420 and / or the housing 410 to form a modular fluidic oscillator.

[0079] The insert 430 may be made of a second material. For example, the insert 430 may be made of plastic such as polypropylene, polyethylene, polycarbonate or other similar materials. The second material may have a higher hardness than the first material.

[0080] The housing 410 may also include an outlet opening 412 extending from the interior chamber 411 of the housing 410 to the exterior of the housing 410. When the flexible member 420, the insert 430, and / or the inlet or supply member 440 are inserted into the housing 410, the outlet of each of the modular fluidic oscillators formed by the flexible member 420, the insert 430, and / or the housing 410 may be disposed adjacent to the outlet opening 412 formed in the housing 410. Specifically, fluid dispensed from the outlet (e.g., including the outlet feature 433) of each of the one or more modular fluidic oscillators may travel through (e.g., be dispensed through) the outlet opening 412 of the housing 410.

[0081] Reference Figure 7 , the inlet or supply component 440 can receive a fluid flow under pressure or under potential energy from gravity. The supply component 440 can deliver the fluid flow to the interior chamber 411 of the housing 410. The flexible component 420 and the insert 430 can be disposed in the interior chamber 411. The fluid flow can travel through the interior chamber 411 of the housing 410 and enter the hollow section 424 of the flexible component 420 through an opening 425 or channel extending through the first leg 422 of the flexible component 420. The insert 430 can be disposed in the hollow section 424 of the flexible component 420. After flowing into the hollow section 424, the fluid flow can travel through one or more modular fluid oscillators formed by the insert 430, the flexible component 420, and / or the housing 410. In some examples, the fluid can flow through a single fluid oscillator disposed along a single surface 431 of the insert 430. In other examples, the fluid can flow through two fluid oscillators disposed along opposing surfaces 431 of the insert 430. The fluid can flow through a recess or conduit 434 in the insert to reach the second fluid oscillator. A spatial oscillating water flow can be distributed from each fluid oscillator. The oscillating water flow distributed from each fluid oscillator can be distributed to the outside of the housing through an outlet 412 of the housing 410.

[0082] In some examples, Figure 7 The fluid device 400 shown in the figure can be configured as a bidet spray bar. For example, the fluid device 400 can be configured as the above reference Figure 3 The bidet spray bar 43 of the bidet assembly 40 described. Specifically, the fluid device 400 can extend from the base (e.g., base 42) of the bidet assembly to the toilet bowl (e.g., toilet bowl 32) of the toilet. In other examples, the fluid device 400 can be configured as a faucet, a shower head, etc. However, the present disclosure is not limited thereto, and the fluid device 400 can be configured as different sanitary ware.

[0083] Overall reference Figure 8 and Fig. 9, illustrates a fluid device 500 according to another example of the present disclosure. Figure 8 FIG. 5 shows a partially exploded view of a fluidic device 500 , and FIG. Fig. 9 The fluidic device 500 is shown in an assembled state. The fluidic device 500 includes a housing 510, a receiving portion or flexible member 520, an insert 530, and a supply conduit or member 540. The fluidic device 500 can be configured as described above with respect to Figure 7 The fluidic device 400 described above operates in substantially the same manner; however, the receptacle or flexible member 520 includes two hollow sections, each of which is configured to receive the insert 430. As described above with respect to Figure 7 As depicted, the housing 510 , the flexible member 520 , and the insert 530 of the fluidic device 500 may collectively form one or more modular fluidic oscillators.

[0084] The housing 510 may be substantially similar to that described above with respect to Figure 7 However, the housing 510 includes four outlet openings 511 to 514. Each of the outlet openings 511 to 514 can be arranged adjacent to or close to the outlet of the modular fluid oscillator formed by the flexible member 520, the insert 530 and the housing 510. The spatially oscillating water flow distributed from each fluid oscillator can be distributed through different outlet openings 511 to 514 in the housing 510.

[0085] The receiving portion or flexible member 520 may be substantially similar to that described above with respect to Figure 7 The housing or flexible member 520 includes a first leg 523, a second leg 524, and a third leg 525 extending from a base 521 of the flexible member 520. Each of the first leg 523 and the second leg 524 may include an opening, passage, or channel (e.g., opening 425) extending therethrough. The opening or channel may be similar to that described above with respect to Figure 7 The openings 425 discussed above are the same. Each of the openings can be configured to convey water flow. For example, the opening extending through the first leg 523 can be configured to convey water flow from the interior chamber of the housing 510 to the hollow section 527 disposed between the first leg 523 and the second leg 524, and the opening extending through the second leg 524 can be configured to convey water flow from the hollow section 527 disposed between the first leg 523 and the second leg 524 to the hollow section 527 disposed between the second leg 524 and the third leg 525. Each of the hollow sections 527 can be configured to receive the insert 530.

[0086] Insert 530 may be similar to that described above with respect to Figure 7The insert 430 described above is the same as the insert 430 described above. Specifically, each of the inserts 530 can include one or more surfaces, the one or more surfaces including one or more walls extending therefrom, the one or more walls forming an element or feature of a modular fluidic oscillator (e.g., fluidic oscillators 100, 200, 300). In some examples, each surface of the insert including a wall that forms an element or feature of the fluidic oscillator can be adjacent to a surface of the first leg 523, the second leg 524, or the third leg 525. Figure 8 As illustrated in FIG. 5 , the insert 530 may be disposed between the first leg 523 and the second leg 524 , and another insert may be disposed between the second leg 524 and the third leg 525 .

[0087] In some examples, the fluidic device 500 may also include an inlet or supply conduit or component 540. The supply conduit or component 540 may be substantially similar to the one described above with respect to Figure 7 However, instead of including a tapered portion configured to be inserted into the housing, the supply conduit or member 540 may include a hollow interior 541 configured to receive the housing 510. In other words, the housing 510 (including the flexible member 520 and the insert 530) may be inserted into the hollow interior 541 of the supply member 540, thereby coupling the supply member 540 and the housing 510.

[0088] Fig. 9 The fluidic device 500 is illustrated in an assembled state. In the assembled state, the insert 530 is disposed in the hollow section 527 of the flexible member 520, and the flexible member 520 is disposed in the interior cavity of the housing 510. When the insert 530 and the flexible member 520 are inserted into the housing 510, each of the outlets of the fluidic oscillator (e.g., formed in part by the outlet feature) can be disposed adjacent to one of the outlet openings 511 to 514 of the housing 510.

[0089] Overall reference Fig.10 and Fig.11 , illustrates a fluid device 600 according to another example of the present disclosure. Fig.10 The fluidic device 600 is illustrated in a partially disassembled state. Fig.11The fluidic device 600 is illustrated in a disassembled state. The fluidic device 600 includes a housing 610, receptacles or flexible members 620, 630, 640, inserts 650, 660, and an inlet or supply member 670. The receptacles or flexible members 620, 630, 640, and inserts 650, 660 may be disposed in the housing 610, or may be configured to be inserted into the housing 610. The housing 610, the receptacles or flexible members 620, 630, 640, and the inserts 650, 660 may together form the fluidic device 600 including one or more modular fluidic oscillators. For example, the housing 610, the receptacles or flexible members 620, 630, 640, and the inserts 650, 660 may form one or more of the modular fluidic oscillators 100, 200, 300 described above. As Fig.10 As shown in FIG. 1 , the flexible components 620, 630, 640 and the inserts 650, 660 may be alternately stacked with each other to form one or more modular fluid oscillators 100, 200, 300. The flexible components 620, 630, 640 and the inserts 650, 660 may be inserted or disposed in the housing 610 such that the housing 610, the flexible components 620, 630, 640 and the inserts are sealedly engaged with each other.

[0090] The housing 610 is configured to receive and direct (e.g., convey) a fluid flow. The housing 610 can receive and convey a fluid flow through an interior chamber of the housing 610. The size and / or shape of the housing 610 can vary. In some examples, such as Fig.10 and Fig.11 As shown in FIG. 6 , the housing 610 may have a hollow cylindrical shape. In other examples, the housing may have a hollow parallelepiped shape. Other shapes of the housing 610 are possible. In some examples, such as Fig.10 and Fig.11 , two opposite ends of the housing may be open. In other examples, only one end of the housing may be open. Housing 610 includes an internal chamber. The internal chamber may be configured to receive a receiving portion or flexible member 620, 630, 640 and an insert 650, 660. In some examples, one or more outlets 611 may extend through housing 610. Water flow may be distributed from the fluid device through one or more outlets 611. In some examples, the number of outlets 611 may correspond to the number of modular fluid oscillators included in the fluid device. In some examples, housing 610 may be made of plastic such as polypropylene, polyethylene, polycarbonate or other similar materials.

[0091] In some examples, the fluid device 600 may also include an inlet or supply component 670. The inlet or supply component 670 may include a tapered portion 671 configured to be inserted into the interior chamber of the housing 610, thereby coupling the supply component 670 and the housing 610. When the tapered portion 671 of the supply component is inserted into the housing 610, a waterproof seal may be formed. For example, a tolerance stack-up may be used to ensure a waterproof seal between the supply component 670 and the housing 410. The inlet or supply component 670 includes a conduit or channel configured to supply a fluid (e.g., a water flow) into the interior chamber of the housing 610. In some examples, the conduit may include a narrowed passage that serves as an amplifier of the flow velocity of the fluid entering the interior chamber of the housing 610.

[0092] The receiving portion or flexible member 620, 630, 640 and the insert 650, 660 can be disposed in the housing. Specifically, the receiving portion or flexible member 620, 630, 640 and the insert 650, 660 can be disposed in the inner chamber of the housing 610. When the flexible member 620, 630, 640 and the insert 650, 660 are disposed in the housing 610, the tolerance stack-up can be used to achieve a waterproof seal between the housing 610, the receiving portion or flexible member 620, 630, 640 and the insert 650, 650. In some examples, the flexible member 620, 630, 640 can be deformed to achieve a waterproof seal.

[0093] like Fig.11 As shown in FIG. 1 , the receiving portion or flexible member 620 , 630 , 640 may have a substantially circular cross-sectional shape. In other examples, the flexible member 620 , 630 , 640 may have a different cross-sectional shape, such as a rectangular or square cross-sectional shape.

[0094] The receiving portion or flexible member 620, 630, 640 may include one or more surfaces having one or more cavities formed therein. Fig.11As shown in the figure, the first flexible part 620 may include a cavity 621, the second flexible part 630 may include a cavity 631, and the third flexible part 640 may include a cavity 641. The cavities 621, 631, and 641 may each have at least one side surface and at least one internal surface (e.g., a rear wall) that define the size and shape of the corresponding cavities 621, 631, 641. In some examples, each surface of the flexible part adjacent to the insert may include one or more cavities formed therein. Each cavity in the cavity may form or define one or more features of a modular fluid oscillator (e.g., 100, 200, 300), and / or may be configured to receive a portion of the insert. In some examples, a portion of the insert may be, for example, press-fitted into the cavity, thereby forming a waterproof connection between the cavity and the insert. In some examples, the cavity may be formed on a single side of the flexible part. In other examples, the cavity may be formed on two or more surfaces of the flexible part. For example, the cavity may be formed on opposite sides of the flexible part adjacent to the insert (e.g., 650, 660). In some examples, in addition to defining one or more features of a modular fluidic oscillator, the cavities 621, 631, 641 can be configured to receive a portion of the insert 650, 660. For example, the cavities 621, 631 can be configured to receive a wall protruding from the insert 650, 660 that is configured to define a feature or element of a modular fluidic oscillator (e.g., 100, 200, 300). In some examples, a modular fluidic oscillator can be formed by a junction between adjacent flexible members and inserts.

[0095] In addition, in some examples, one or more of the receptacles or flexible members 620, 630, 640 may include an opening, channel, or passage (e.g., 623, 633, 643) extending therethrough. For example, the first flexible member 620 may include a passage 623, and the second flexible member 630 may include a passage 633. The passages 623, 633 may be configured to convey or guide water flow, for example, convey or guide water flow from an internal chamber of the housing or another passage to one or more modular fluid oscillators. The flexible members 620, 630, 640 may be made of a first material. For example, the flexible members 620, 630, 640 may include rubber, silicone rubber, flexible polyvinyl chloride (PVC), or a rubber-like resin. For example, the flexible components 620, 630, 640 can be made of thermoplastic elastomers (TPE) such as thermoplastic vulcanizates (TPV), styrene block copolymers (TPE-S), thermoplastic polyolefins (TPE-O), thermoplastic polyurethanes (TPE-U), thermoplastic copolyesters (TPE-E), melt-processable rubbers (MPR), thermoplastic polyether block amides (TPE-A), ethylene vinyl acetate (EVA), or combinations thereof.

[0096] Inserts 650, 660 may be disposed in housing 610. In some examples, each insert 650, 660 may be disposed adjacent to a receptacle or flexible member 620, 630, 640. In some examples, each insert 650, 660 may be disposed between two flexible members (e.g., 620, 630, 640). A modular fluidic oscillator may be formed at a junction between adjacent inserts (e.g., 650, 660) and flexible members (e.g., 620, 630, 640). Inserts 650, 660 may include one or more surfaces including walls 651, 661 protruding therefrom. Fig.11 , the first insert 650 may include a wall 651 extending from a surface 652 of the insert 650, and the second insert 660 may include a wall 661 extending from a surface 662 of the insert 660. The walls 651, 661 may define or form elements or features of the modular fluidic oscillator 100, 200, 300. In some examples, one or more walls 651, 661 may also be configured to be disposed in a cavity 621, 631, 641 formed in the flexible member 620, 630, 640. In some examples, the walls 651, 661 may be disposed adjacent to a surface of the flexible member 620, 630, 640 that forms the modular fluidic oscillator (e.g., 100, 200, 300). One or more walls 651 , 661 of the insert 650 , 660 may be configured to engage the cavity 621 , 631 , 641 to form a watertight seal with the flexible member 620 , 630 , 640 .

[0097] In some examples, only a single surface of the insert may include a wall protruding therefrom. In other examples, the insert may include two surfaces having walls protruding therefrom. One or more surfaces of the insert adjacent to the receptacle or the flexible member may include walls protruding therefrom that are configured to form or define one or more elements or features of the modular fluidic oscillator and / or configured to be inserted into a cavity of the flexible member.

[0098] In some examples, the receptacles or flexible members 620, 630, 640 and the inserts 650, 660 can be disposed in the housing 610, and the housing 610 can maintain or fix the positions of the flexible members 620, 630, 640 and the inserts 650, 660 relative to each other and relative to the housing 610. For example, tolerance stacking of the receptacles or flexible members 620, 630, 640, the inserts 650, 660, and / or the housing 610 can be used to create a watertight seal between the flexible members 620, 630, 640, the inserts 650, 660, and the housing 610. In some examples, the inserts 650, 660 can include recesses or conduits 653, 663 configured to convey a fluid flow. The conduits 653, 663 can be configured to convey a water flow to the modular fluidic oscillator, for example, through the inserts 650, 660.

[0099] In some examples, Fig.10 and Fig.11 The fluidic device 600 illustrated in the figure may include three receptacles or flexible components 620, 630, 640 and two inserts 650, 660, and may be configured to form four modular fluidic oscillators (e.g., 100, 200, 300); however, the present disclosure is not limited thereto. For example, a modular fluidic oscillator may include a single flexible component and a single insert configured to form a single modular fluidic oscillator at a junction between the flexible component and the insert. A fluidic oscillator according to the present invention may include any number of flexible components and / or inserts. In some examples, such as Fig.11 As shown in FIG. 1 , the fluidic device may include one more flexible member than the insert.

[0100] Reference Fig.10 and Fig.11, the inlet or supply component 670 can receive a fluid flow under pressure or with potential energy from gravity. The supply conduit 670 can deliver the fluid flow to the internal chamber of the housing 610. One or more receptacles or flexible components (e.g., 620, 630, 640) and one or more inserts (e.g., 650, 660) can be arranged in the internal cavity of the housing 610. The fluid flow can travel through the internal cavity of the housing 610 and the passage 623 of the flexible component (e.g., 620, 630, 640). The fluid flow can travel through one or more modular fluid oscillators formed by the flexible component, the insert and the housing at the junction between the flexible component and the insert. In some examples, the fluid flow can travel through a single modular fluid oscillator at the junction between the flexible component and the insert. In another example, the fluid flow can be located between two or more modular fluid interfaces formed at the interface between the flexible component and the insert. Before flowing to one or more of the modular fluidic oscillators, the fluid flow can travel through one or more passages (e.g., passage 623, passage 633, passage 643) in the flexible member and one or more conduits 653, 663 in the insert. A spatial oscillating water flow can be distributed from each fluidic oscillator. The oscillating water flow distributed from each fluidic oscillator can be distributed to the outside of the housing through an outlet opening 611 in the housing 610.

[0101] In some examples, Fig.10 and Fig.11 The fluid device 600 shown in FIG. 6 can be configured as a bidet spray bar. For example, the fluid device 600 can be configured as described above with respect to Figure 3 The bidet spray bar 43 of the bidet assembly 40 described. Specifically, the fluid device 600 can extend from the base (e.g., base 42) of the bidet assembly to the toilet bowl (e.g., bowl 32) of the toilet. In other examples, the fluid device 600 can be configured as a faucet, a shower head, etc. However, the present disclosure is not limited thereto, and the fluid device 600 can be configured as different sanitary ware.

[0102] Fig.12 A flow chart for assembling a fluidic device according to one example of the present disclosure is illustrated. Flowchart 700 may be used to assemble any of the fluidic devices 400, 500, 600 described herein. For ease of illustration, flow chart 700 is described below with respect to fluidic device 400. Additional, different, or fewer actions may be provided.

[0103] In a first action S101, an insert is placed in a receiving portion or flexible member. Specifically, with respect to the fluidic device 400, the insert 430 can be placed between the first leg 422 and the second leg 423 within the interior hollow section 424 of the flexible member 420. When the insert 430 is placed in the flexible member 420, one or more surfaces of the insert including a wall 432 protruding therefrom and configured to define an element or feature of a modular fluidic oscillator (e.g., 100, 200, 300) can be disposed adjacent to an interior surface of one of the first leg 422 and the second leg 423.

[0104] In a second action S103, a receptacle or flexible member and an insert are placed in a housing. When the flexible member and the insert are placed in the housing, the flexible member, the insert, and the housing can form a watertight seal with each other, thereby defining a path by which a fluid flow received by the housing travels through the fluidic device to one or more modular fluidic oscillators included in the fluidic device, through the modular fluidic oscillators, and out of an outlet in the housing. With respect to the fluidic device 400, the flexible member 420 and the insert 430 can be placed in the housing 410. The flexible member 420 and the insert can be placed in the housing 410 such that an outlet feature 433 of the one or more modular fluidic oscillators is aligned with an outlet 412 of the housing 410.

[0105] In a third action S105, an inlet or supply component can be connected to the housing. In some examples, with respect to fluidic device 400, supply component 440 can include a tapered portion 441 configured to be inserted into housing 410 (e.g., interior chamber 411 of housing 410). In other examples, for example, with respect to fluidic device 500, supply component 540 can include a hollow interior 541 configured to receive housing 510. A watertight seal can be formed between the housing and the supply component.

[0106] Overall reference Figures 13 to 15 , illustrates a fluid device 800 according to an exemplary embodiment of the present disclosure. The fluid device 800 includes a housing 810, an outer circumferential ring 820, and at least one inner circumferential ring 830, 840, 850. In some examples, such as Fig.13 As illustrated in FIG. 8 , fluidic device 800 may include three inner circumferential rings 830, 840, and 850. The inner circumferential rings may be disposed or nested within outer circumferential rings and / or within each other.

[0107] Reference Fig.15 , illustrating an exploded view of the fluid device 800, each of the inner circumferential rings 830, 840, 850 may include one or more channels or paths disposed or formed along the outer surface of the inner circumferential ring. Figures 13 to 15, the first inner circumferential ring 830 may include a channel 831, the second inner circumferential ring 840 may include a channel 841, and the third inner circumferential ring 850 may include a channel 851. Each of the paths or channels 831, 841, 851 provided along the outer surface of the corresponding circumferential ring may include a path or channel of a modular fluid oscillator, such as modular fluid oscillator 100, 200, 300, and one or more paths (e.g., supply paths) configured to supply water to the modular fluid oscillator. When the inner circumferential ring is nested in the outer circumferential ring or another inner circumferential ring, the channels (e.g., 831, 841, 851) provided in the outer surface of the inner circumferential ring and the inner surface of the outer circumferential ring or the inner surface of another inner circumferential ring may jointly form a modular fluid oscillator (e.g., 100, 200, 300). Specifically, the channels 831, 841, 851 disposed along the outer surface of the inner circumferential ring can be disposed adjacent to the inner surface of the outer circumferential ring or the inner surface of another inner circumferential ring. In these examples, the inner surface of the outer circumferential ring or the inner surface of another inner circumferential ring or the additional inner circumferential ring can together form a modular fluid oscillator (e.g., 100, 200, 300). For example, the inner surface of the outer circumferential ring or the inner surface of another inner circumferential ring or the additional inner circumferential ring can form a wall or surface of the modular fluid oscillator.

[0108] The outer circumferential ring 820 may be disposed within the interior chamber 815 of the housing 810. Figures 13 to 15 810 , the outer periphery of the outer circumferential ring 820 may have a circular shape. The shape of the outer periphery of the outer circumferential ring 820 may correspond to the shape of the inner periphery of the housing 810. Therefore, when the outer circumferential ring 820 is disposed in the housing 810, the outer surface 821 of the outer retaining member 820 may abut the inner surface 817 of the housing 810. In some examples, the housing 810 may include a retaining lip 818 configured to retain the position of the outer circumferential ring 820 in the housing 810. The retaining lip 818 may abut the outer circumferential ring 820.

[0109] The shape of the outer peripheral ring can vary. In some examples, such as Fig.13 , the inner periphery of the outer circumferential ring 820 may have a heptagonal shape. In other examples, the inner periphery of the outer circumferential ring 820 may have a different shape, such as a hexagonal, pentagonal, rectangular, or triangular shape. The shape of the inner periphery of the outer circumferential ring may correspond to the shape of the outer periphery of the inner circumferential ring (e.g., the first inner circumferential ring 830).

[0110] The inner circumferential ring (e.g., inner circumferential ring 830) can be disposed within the outer circumferential ring 820. In some examples, the fluid device can include two or more inner circumferential rings (e.g., 830, 840, 850). Each of the inner circumferential rings can be disposed or nested within an outer circumferential ring and / or another or different inner circumferential ring. For example, Figures 13 to 15 As illustrated in FIG. 8 , the third inner circumferential ring 850 may be nested in the second inner circumferential ring 840, the second or additional inner circumferential ring 840 may be nested in the first circumferential ring 830, and the first circumferential ring 830 may be nested in the outer circumferential ring 820. The outer circumferential ring 820 may be nested inside the housing 810.

[0111] In some examples, such as Figures 13 to 15 As shown in FIG. 8 , the fluid device may include three inner circumferential rings 830, 840, 850; however, the present disclosure is not limited thereto, and the fluid device 800 may include any number of inner circumferential rings. For example, the fluid device may include a single inner circumferential ring, two inner circumferential rings, or more than three inner circumferential rings.

[0112] The shape of each of the inner circumferential rings may vary. In examples including two or more inner circumferential rings, each of the two or more inner circumferential rings may have a different shape. The shape of the outer periphery or outer surface of each of the inner circumferential rings may correspond to the shape of the inner periphery or inner surface of another inner circumferential ring in which the inner circumferential ring is disposed or nested. For example, the outer periphery of the inner circumferential ring may have a heptagonal, hexagonal, pentagonal, rectangular, or triangular shape.

[0113] In some examples, such as Fig.13 As shown in FIG. 1 , each side of the outer periphery or outer surface of the inner circumferential ring may include channels or passages disposed along the outer surface of the inner circumferential ring, and the channels or passages are configured to form a modular fluid oscillator (e.g., 100, 200, 300). For example, Fig.13 As shown in FIG. 8 , the outer periphery of the first inner circumferential ring 830 has a heptagonal shape, and each of the seven sides of the outer surface of the first inner circumferential ring includes channels or paths arranged along the outer surface of the inner circumferential ring, and the channels or paths are configured to form a modular fluid oscillator. In some examples, such as Fig.13 As shown in the figure, the outer periphery of the inner circumferential ring can have fewer sides than the outer periphery of another inner circumferential ring in which the inner circumferential ring is disposed or nested. For example, the outer periphery of the first inner circumferential ring 830 has seven sides, and the outer periphery of the second inner circumferential ring 840 has five sides.

[0114] Reference Fig.14 and Fig.15In some examples, the housing 810 may include a back plate 811, a retaining member 812, and a seal 813. The retaining member 812 may have a hollow cylindrical shape. In some examples, the retaining member 812 may include a retaining lip 818. An outer circumferential ring 820 and one or more inner circumferential rings (e.g., 830, 840, 85) may be disposed within the retaining member 812. The retaining lip 818 may contact the outer circumferential ring 820 and may be configured to maintain the position of the outer circumferential ring 820 within the retaining member 812. The seal 813 may be disposed within the retaining member 812 between the outer circumferential ring 820 and the back plate 811. A portion of the back plate 811 may be disposed in the retaining member 812. An internal chamber 815 may be formed within the retaining member 812 between the outer circumferential ring 820, the inner circumferential rings (e.g., 830, 840, 850), and the back plate 811. The back plate 811 may include an inlet 814 configured to deliver a fluid flow to the internal chamber 815. Each of the modular fluidic oscillators included in the fluidic device 800 may be in fluid communication with the internal chamber 815 via a channel (e.g., 831, 841, 851) formed along an outer surface of an inner circumferential ring (e.g., 830, 840, 850). In some examples, the innermost inner circumferential ring, such as Fig.14 The inner circumferential ring 850 illustrated in FIG. 8 may have a circular shape including a wall 852 disposed at the center of the inner circumferential ring 850 .

[0115] In some examples, Figures 13 to 15 The fluid device 800 illustrated in the figure can be configured as a shower head or a faucet head. In other examples, the fluid device 800 can be included in the rim outlet or the tank spray outlet of the toilet. However, the present disclosure is not limited to this, and the fluid device 800 can be configured as different sanitary ware.

[0116] Reference Fig.16 , illustrates a fluidic device 900 according to an example of the present disclosure. The fluidic device 900 includes a plurality of stacked oscillator units 910. Each oscillator unit 910 may include a different layer of the fluidic device 900. Each oscillator unit 910 may include a modular fluidic oscillator (e.g., 100, 200, 300). In some examples, such as Fig.16 As illustrated in FIG. 1 , each oscillator unit 910 may include a modular fluid oscillator 100 ; however, the present disclosure is not limited thereto.

[0117] like Fig.16 The figure and the above text about Figure 4As described, the modular fluidic oscillator 100 in each oscillator unit 910 includes two feedback channels 120. In the fluidic device 900, the feedback channels 120 in each oscillator unit 910 can be independent or isolated from the feedback channels in other layers (e.g., oscillator units 910) of the fluidic device 900. Independent or isolated feedback channels between different layers of the fluidic device 900 can result in independent oscillating water flows from the modular oscillator 100 disposed in each layer or each oscillator unit 910 of the fluidic device 900. The independent oscillating water flows from each modular fluidic oscillator 100 can oscillate out of phase with each other.

[0118] The fluidic device 900 also includes an inlet channel 920. The inlet channel 920 can be in fluid communication with the modular fluidic oscillators disposed in each layer or oscillator unit 910. The inlet channel 920 can supply a fluid flow to each of the oscillator units 910. In some examples, the fluid flow through the inlet channel 920 can be perpendicular or substantially perpendicular to the fluid flow through each oscillator unit 910.

[0119] In some examples, Fig.16 The fluid device 900 illustrated in the figure can be configured as a shower head or a faucet head. In other examples, the fluid device 900 can be included in the rim outlet or tank spout of the toilet. However, the present disclosure is not limited to this, and the fluid device 900 can be configured as different sanitary ware.

[0120] Reference Fig.17 , illustrates a fluidic device 1000 according to another example of the present disclosure. The fluidic device 1000 may be similar to the fluidic device 900; however, the fluidic device 1000 includes a common feedback channel 1030. The fluidic device 1000 includes an oscillator unit 1010 and an inlet channel 1020. The oscillator unit 1010 may be similar to the fluidic device 900 described above. Fig.16 The inlet channel 1020 may be the same as described above with respect to the oscillator unit 910. Fig.16 The inlet passage 920 described is the same.

[0121] The fluidic device 1000 includes a common feedback channel 1030. The common feedback channel 1030 connects feedback channels in different layers or different oscillator units 1010 of the fluidic device 1000. In some examples, the fluidic device 1000 may include two common feedback channels 1030. The fluidic device 1030 may include a common feedback channel 1030 for each feedback channel included in the modular fluidic oscillator (e.g., 100, 200, 300). For example, Fig.17 The figure and the above text about Figure 4As described, the modular fluidic oscillator 100 may include two feedback channels 120, and thus, the fluidic device 1000 may include two common feedback channels 1030. The common feedback channels 1030 may cause the modular fluidic oscillators 100 (eg, oscillator units 1010) in each layer to oscillate in phase with each other.

[0122] In some examples, such as Fig.17 As shown, the common feedback channel 1030 can extend outside the oscillator unit 1010. In some examples, the length of the common feedback channel 1030 can be varied to change the oscillation frequency or period of the modular fluidic oscillator. In some examples, each feedback channel 1030 can include an adjustment device 1040 configured to change the length of the common feedback channel 1030. For example, the adjustment device can affect the feedback channel 1030 to shorten the feedback channel, and can slide along the feedback channel to variably change the length of the common feedback channel 1030.

[0123] In some examples, Fig.17 The fluid device 1000 illustrated in the figure can be configured as a shower head or a faucet head. In other examples, the fluid device 1000 can be included in the rim outlet or tank spout of the toilet. However, the present disclosure is not limited thereto, and the fluid device 1000 can be configured as different sanitary ware.

[0124] When a component, device, element, etc. of the present disclosure is described as having a purpose or performing an operation, function, etc., the component, device or element should be considered herein as “configured to” satisfy the purpose or perform the operation or function.

[0125] As used herein, the terms "approximately," "about," "substantially," and similar terms are intended to have a broad meaning consistent with the common and accepted usage by those of ordinary skill in the art to which the subject matter of the present disclosure belongs. It should be understood by those skilled in the art who review the present disclosure that these terms are intended to allow a description of certain features described and claimed without limiting the scope of such features to the precise numerical ranges provided. Accordingly, these terms should be interpreted as indicating that insubstantial or inconsequential modifications or changes to the subject matter described and claimed are considered to be within the scope of the disclosure as recorded in the appended claims.

[0126] It should be noted that the term "exemplary" and variations thereof, as used herein to describe various embodiments, are intended to indicate that these embodiments are possible examples, representations, or illustrations of possible embodiments (and such terms are not intended to imply that such embodiments are necessarily extraordinary or extraordinary examples).

[0127] As used herein, the term "connection" and its variants refer to two members being directly or indirectly connected to each other. Such connection can be fixed (e.g., permanent or fixed) or movable (e.g., removable or releasable). Such connection can be achieved in the following ways: two members are directly connected to each other; two members are connected to each other using a separate intermediate member and any additional intermediate member connected to each other; or two members are connected to each other using an intermediate member that is formed as a single integral body with one of the two members. If "connection" or its variants are modified by additional terms (e.g., direct connection), the general definition of "connection" provided above will be modified by the ordinary language meaning of the additional terms (e.g., "direct connection" refers to the connection of two members without any separate intermediate member), thereby producing a narrower definition than the general definition of "connection" provided above. Such connection can be mechanical, electrical or fluid connection.

[0128] As used herein, the term "or" is used in its inclusive sense (rather than exclusive sense), such that when used to connect a list of elements, the term "or" means one, some, or all of the elements in the list. Unless specifically stated otherwise, connective language such as "at least one of X, Y, and Z" should be understood to convey that the element can be X, Y, Z; X and Y; X and Z; Y and Z; or X, Y, and Z (i.e., any combination of X, Y, and Z). Therefore, unless otherwise stated, such connective language is generally not intended to imply that certain embodiments require that at least one of X, at least one of Y, and at least one of Z each be present.

[0129] The positions of elements mentioned herein (e.g., "top," "bottom," "above," "below") are only used to describe the orientation of the various elements in the figures. It should be noted that according to other exemplary embodiments, the orientation of the various elements may be different, and the present disclosure is intended to cover such variations.

[0130] Although the drawings and description may illustrate a particular order of method steps, unless otherwise noted above, the order of these steps may be different from that depicted and described. In addition, unless otherwise noted above, two or more steps may be performed simultaneously or partially simultaneously. For example, such variations may depend on the selected software and hardware systems and the designer's choice. All such variations are within the scope of the present disclosure. Similarly, the software implementation of the described method may also be implemented by standard programming techniques using rule-based logic and other logic for completing various connection steps, processing steps, comparison steps, and decision steps.

[0131] It should be noted that the construction and arrangement of the systems shown in the various exemplary embodiments are illustrative only. In addition, any element disclosed in one embodiment can be combined or used with any other embodiment disclosed herein. Although only an example in which an element in one embodiment can be combined in or used in another embodiment is described above, it should be understood that other elements of various embodiments can be combined or used with any embodiment in other embodiments disclosed herein.

Claims

1. A fluid device, comprising: a housing configured to receive a flow of water and comprising an outlet configured to distribute the flow of water; a flexible member configured to be disposed within the housing, the flexible member comprising a base, a first leg extending from the base, a second leg extending from the base, and an opening extending through the first leg; as well as an insert configured to be disposed between the first leg and the second leg within the housing, Wherein, when the flexible component and the insert are arranged in the housing, the housing, the flexible component and the insert form at least one modular fluid oscillator.

2. The fluid device according to claim 1, wherein: The insert includes at least one surface having one or more walls protruding therefrom, the one or more walls being configured to form one or more features of the at least one modular fluidic oscillator.

3. The fluid device according to claim 2, wherein: The at least one surface of the insert including one or more walls protruding therefrom is disposed adjacent to the first leg or the second leg.

4. The fluid device according to claim 2, wherein: The at least one modular fluidic oscillator comprises a plurality of modular fluidic oscillators, wherein the insert comprises two surfaces having one or more walls protruding therefrom, the one or more walls protruding from each of the two surfaces being configured to form one or more features of different modular fluid oscillators among the plurality of modular fluid oscillators.

5. The fluid device according to claim 1, wherein: The flexible component is made of a first material, the insert is made of a second material different from the first material, and the hardness of the first material is lower than the hardness of the second material.

6. The fluidic device according to claim 1, further comprising: A supply component is configured to be disposed in the inner chamber of the housing, and the supply component is configured to supply the water flow to the housing.

7. A fluid device comprising: a housing configured to receive a flow of water and comprising an outlet configured to distribute the flow of water; a flexible member comprised of a first material and configured to be disposed within the housing, the flexible member including a passage configured to convey a flow of water and at least one surface including a cavity formed therein; as well as An insert, the insert being composed of a second material different from the first material, the insert being configured to be disposed in the housing, and a portion of the insert being configured to be disposed in the cavity, wherein when the flexible component is disposed in the housing, the housing, the flexible component and the insert are configured to form at least one modular fluid oscillator.

8. The fluid device according to claim 7, wherein: The insert includes at least one surface having one or more walls protruding therefrom, the one or more walls being configured to form one or more features of the at least one modular fluidic oscillator.

9. The fluid device according to claim 8, wherein: The one or more walls are configured to be disposed in the cavity.

10. The fluid device according to claim 7, wherein: The first material has a lower hardness than the second material.

11. The fluidic device according to claim 7, further comprising: A supply component is configured to be disposed in the inner chamber of the housing, and the supply component is configured to supply the water flow to the housing.

12. The fluid device according to claim 7, wherein: The at least one modular fluidic oscillator comprises a plurality of modular fluidic oscillators, and wherein the insert comprises two surfaces having one or more walls protruding therefrom, the one or more walls extending from each of the two surfaces being configured to form one or more features of different modular fluid oscillators among the plurality of modular fluid oscillators.

13. A fluid device, comprising: a cylindrical housing configured to receive a flow of water; an outer circumferential ring disposed in the cylindrical housing; as well as An inner circumferential ring is disposed within the outer circumferential ring, the inner circumferential ring comprising at least one channel disposed along an outer surface of the inner circumferential ring, the outer circumferential ring and the inner circumferential ring together forming at least one modular fluid oscillator.

14. The fluid device according to claim 13, wherein: The inner surface of the outer circumferential ring and the outer surface of the inner circumferential ring have the same number of side faces.

15. The fluid device according to claim 14, wherein: The at least one channel comprises a plurality of channels, and Wherein, one channel of the plurality of channels is disposed along each side of the outer surface of the inner circumferential ring.

16. The fluid device according to claim 13, wherein: The cylindrical housing includes a retaining member and a back plate.

17. The fluid device according to claim 13, wherein: The at least one modular fluidic oscillator is disposed along a junction between an inner surface of the outer circumferential ring and the outer surface of the inner circumferential ring.

18. The fluidic device of claim 13, further comprising: An additional inner circumferential ring is disposed within the first inner circumferential ring, the additional inner circumferential ring comprising at least one additional ring channel disposed along an outer surface of the additional inner circumferential ring, the inner circumferential ring and the additional inner circumferential ring together forming at least one modular fluid oscillator.

19. The fluid device according to claim 18, wherein: The outer surface of the inner circumferential ring has more side faces than the outer surface of the additional inner circumferential ring.

20. The fluid device according to claim 19, wherein: The at least one additional ring channel comprises a plurality of additional ring channels, one additional ring channel of the plurality of additional ring channels being arranged along each side of the outer surface of the additional circumferential ring, and the inner circumferential ring and the additional inner circumferential ring together form a modular fluid oscillator along each side of the outer surface of the additional inner circumferential ring.

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