Fluid delivery device

Abstract

A fluid delivery device includes an inlet, a plurality of outlets, a first chamber to supply fluid to a first selection of the plurality of outlets, a second chamber to supply fluid to a second selection of the plurality of outlets, and a switching device between the inlet and two or more chambers. The switching device has a first operating mode in which there is a first fluid flow rate from the inlet to the first chamber and a second operating mode in which there is a second fluid flow rate from the inlet to the second chamber. In the first mode of operation, a fluid flow rate from the inlet to the second chamber is not equal to the second fluid flow rate. The switching device cycles between a first mode of operation and a second mode of operation.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of priority to United Kingdom Patent Application No. 2311087.7 ​​filed on July 19, 2023 and United States Patent Application No. 18 / 755,442 filed on June 26, 2024, the entire disclosures of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to a fluid delivery device, such as a shower head for a shower or a faucet, and also to a plumbing or bathing system including such a fluid delivery device. Background Art

[0004] The fluid conveying equipment and pipeline system described in this application do not exist in the prior art. Summary of the invention

[0005] The present invention discloses a fluid conveying device, comprising:

[0006] an inlet for receiving fluid from a fluid supply conduit;

[0007] a plurality of outlets in fluid communication with the inlet;

[0008] two or more chambers, the two or more chambers comprising a first chamber that supplies fluid to a first selection of the plurality of outlets and a second chamber that supplies fluid to a second selection of the plurality of outlets; and

[0009] a switching device disposed between the inlet and the two or more chambers, the switching device controlling fluid flow to the plurality of outlets;

[0010] wherein the switching device has a first operating mode and a second operating mode, in which the first operating mode there is a first fluid flow rate from the inlet to the first chamber, and in which the second operating mode there is a second fluid flow rate from the inlet to the second chamber;

[0011] wherein, in the first operating mode, a fluid flow rate from the inlet to the second chamber is not equal to the second fluid flow rate; and

[0012] Wherein, during use of the fluid delivery device, the switching device cycles between the first operating mode and the second operating mode.

[0013] The present invention also discloses a pipeline system, comprising:

[0014] Entrance;

[0015] a plurality of outlets in fluid communication with the inlet;

[0016] a first chamber in fluid communication with a first selection of the plurality of outlets and a second chamber in fluid communication with a second selection of the plurality of outlets; and

[0017] a switching device located between the inlet and the two or more chambers, the switching device controlling fluid flow to the plurality of outlets;

[0018] wherein the switching device has a first operating mode and a second operating mode, in which the first operating mode there is a first fluid flow rate from the inlet to the first chamber, and in which the second operating mode there is a second fluid flow rate from the inlet to the second chamber, wherein in the first operating mode the fluid flow rate from the inlet to the second chamber is not equal to the second fluid flow rate; and

[0019] wherein the switching device cycles between the first mode of operation and the second mode of operation; and

[0020] A fluid supply conduit is configured to fluidly connect the inlet to a fluid source. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following is a detailed description with reference to the accompanying drawings by way of example only:

[0022] Figure 1 An exemplary fluid delivery device is illustrated.

[0023] Figure 2 An enlarged cross-sectional view of a portion of an exemplary fluid delivery device is illustrated.

[0024] Figure 3 An exemplary fluid delivery device is illustrated.

[0025] Figure 4 An enlarged view of a sub-region of an exemplary fluid delivery device is illustrated.

[0026] Figure 5 An enlarged cross-sectional view of a segment of an exemplary fluid delivery device is illustrated.

[0027] Figure 6 An enlarged cross-sectional view of an exemplary catheter assembly is illustrated.

[0028] Fig. 7A An enlarged cross-sectional view of an exemplary catheter in a first state is illustrated.

[0029] Figure 7B An enlarged cross-sectional view of an exemplary catheter assembly in a second state is illustrated.

[0030] Fig. 8A An exemplary fluid delivery device is illustrated.

[0031] Figure 8B A cross-sectional view of an exemplary fluid delivery device is illustrated.

[0032] Fig. 9 A cross-sectional view of a portion of an exemplary fluid delivery device is illustrated.

[0033] Fig.10 A cross-sectional view of a portion of an exemplary fluid delivery device is illustrated.

[0034] Fig.11 An exemplary fluid delivery device is illustrated.

[0035] Fig.12 A cross-sectional view of an exemplary actuator assembly is illustrated.

[0036] Fig.13 A cross-sectional view of an exemplary actuator is illustrated.

[0037] Fig.14 An exemplary bathing system is illustrated. DETAILED DESCRIPTION

[0038] Figure 1 A fluid delivery device 1 is shown. In this example, the fluid delivery device 1 is a shower head for a shower. Other fluid delivery devices can also be envisioned, including but not limited to faucets or taps. The fluid delivery device 1 includes a body 8 having: an inlet 2, which is configured to be connected to a fluid supply device (such as a pipe or other pipeline (not shown)) and receive fluid from the fluid supply device; and a plurality of fluid delivery outlets 3a, 3b, which are in fluid communication with the inlet 2. The fluid delivery device 1 also includes a first chamber 5a leading to a first selection 3a of the plurality of outlets 3a, 3b and a second chamber 5b leading to a second selection 3b of the plurality of outlets 3a, 3b. In addition to the first chamber 5a and the second chamber 5b, other structures can also be used, including but not limited to fluid supply pipelines and cavities. At least one of the first selection 3a of the outlet and the second selection 3b of the outlet includes more than one outlet.

[0039] The fluid delivery device 1 further includes a switching device 4, which is arranged in the fluid path between the inlet 2 and the multiple outlets 3a, 3b. The switching device 4 is operable to control the fluid flow to the multiple outlets 3a, 3b. The switching device 4 is configured so that it has a first operating mode and a second operating mode. In the first operating mode, there is a first fluid flow rate from the inlet 2 to the first chamber 5a, and in the second operating mode, there is a second fluid flow rate from the inlet 2 to the second chamber 5b. In the first operating mode, the fluid flow rate from the inlet to the second chamber is not equal to the second fluid flow rate, but in some exemplary embodiments, the two fluid flow rates may be equal. During the use of the fluid delivery device 1, the switching device 4 is made to cycle continuously between the first operating mode and the second operating mode.

[0040] In this example, the first selection of outlets 3a and the second selection of outlets 3b each include more than one outlet. The first selection of outlets 3a and the second selection of outlets 3b each include several outlets arranged radially in an annular manner around the central axis 6 of the fluid delivery device 1. In other exemplary embodiments, different arrangements of outlets may be used for the outlets of both the first selection 3a and the second selection 3b. The central axis 6 passes through the center of the spray face 9a, perpendicular to the spray face 9a at this point. Figure 1 The cross-sectional view of shows only two outlets of each of the first choice 3a and the second choice 3b of outlets.

[0041] The first chamber 5a is connected to the inlet 2 and the switching device 4 via one or more channels 7a (referred to as first channels 7a). Similarly, the second chamber 5b is connected to the inlet 2 and the switching device 4 via one or more channels (referred to as second channels, not shown).

[0042] Figure 2 yes Figure 1 An enlarged view of a cross section of the fluid delivery device in FIG. Figure 2 As shown, the body 8 includes two first channels 7a and two second channels 7b, but other numbers of first channels 7a and second channels 7b may be used in other exemplary embodiments. The first channels 7a and the second channels 7b are alternately spaced around a section of the body 8, so that the two first channels 7a are opposite to each other, and the two second channels 7b are also opposite to each other. Furthermore, depending on the characteristics of the switching device, this configuration of the channels 7a and 7b can ensure that the phase of the flow in one of the two first channels 7a is the same as the phase of the flow in the other of the first channels 7a. Similarly, the phase of the flow in one of the two second channels 7b is the same as the phase of the flow in the other of the second channels 7b.

[0043] The first channel 7a and the second channel 7b may be positioned adjacent to each other instead of opposite each other, or, depending on the configuration of the switching device 4, they may also have different radial spacings.

[0044] In this example, the switching device 4 is a movable element that rotates relative to the body 8. The switching device 4 can be a turbine or a helical threaded rod, or a rotating plate with a through hole for aligning or misaligning with the first channel 7a and the second channel 7b. In certain positions, the switching device 4 can partially or completely close the opening to the first channel 7a and / or the second channel 7b. Alternatively, the switching device 4 can incompletely close the opening of the first channel 7a and / or the second channel 7b at any position during its rotation. This can ensure that the flow rate through both the first channel 7a and the second channel 7b is always non-zero.

[0045] The fluid flow rate to each of the first and second channels 7a, 7b is defined by the inlet water pressure and the size of the opening between the switching device 4 and the respective channels 7a, 7b. When the switching device is a turbine, the relevant opening is located between the respective channels 7a, 7b and the turbine blades, which shield the respective channels 7a, 7b.

[0046] Replay Figure 1 , shows the fluid delivery device 1 when the switching device 4 is in the first operating mode. In this mode, the fluid flow rate from the inlet 2 to the first chamber 5a is the first fluid flow rate. The fluid flow rate from the inlet 2 to the second chamber 5b is not equal to the second fluid flow rate. When the switching device 4 rotates, the switching device 4 switches from its first operating mode to its second operating mode, and the opening between the blades of the turbine and the first channel 7a and the second channel 7b changes. The fluid flow rate from the inlet 2 to the second chamber 5b becomes the second fluid flow rate. The fluid flow rate from the inlet 2 to the first chamber 5a also changes so that it is not equal to the first fluid flow rate.

[0047] As the turbine continues to rotate, the switching device (turbine) 4 continuously cycles between the first operating mode and the second operating mode. This can be beneficial because a pulsed flow can be achieved, which can provide the user with an appropriate sense of water pressure while minimizing the total water consumption. The fluid delivery device 1 can be configured so that in use, the switching device 4 can rotate at approximately 200 revolutions per minute (RPM), although other RPMs can also be used. The short pulse interval time can prevent the user from noticing that the flow rate from each outlet is fluctuating. Providing two options of outlets 3a, 3b with flow rate changes offset over time can further mask the flow rate changes to the user of the fluid delivery device 1.

[0048] In this exemplary embodiment, the switching device 4 is not powered. The switching device 4 is driven only by the fluid flow through the fluid delivery device 1. This can minimize the complexity, manufacturing cost and energy consumption of such devices while improving safety for the user. In this way, the cycle of the switching device 4 between the first operating mode and the second operating mode can be automatic and continuous. In other embodiments, the switching device 4 can be powered to drive the rotation.

[0049] The resultant flow pattern of the fluid delivery device 1 can be changed by changing the shape and number of the turbine blades of the switching device 4. For example, the number or spacing of the blades can change the pulse interval period for a given inlet fluid pressure. Further, in an exemplary embodiment, more than two channels 7a, 7b, chambers 5a, 5b and nozzle options 3a, 3b can be used to accommodate different turbine blade configurations.

[0050] The fluid delivery device 1 may be configured to allow replacement of the switching device 4. This may allow the flow pattern of the fluid delivery device 1 to be selected for a given application. Figure 1 An exemplary manner is shown in which the fluid delivery device may be configured to allow replacement of the switching device 4 .

[0051] In this example, the switching device 4 is a turbine that can be separated from the body 8. The turbine is arranged in the fluid path between the inlet 2 and the plurality of outlets 3a, 3b and is coaxial with the inlet 2. The inlet 2 is configured to be selectively coupled to a fluid supply pipe or an adapter (not shown) thereon by means of a spiral thread. The maximum diameter of the turbine can be smaller than the minimum diameter of the inlet (the diameter is measured parallel to the axis of the turbine). This allows the turbine to be removed from the fluid delivery device 1 or inserted into the fluid delivery device 1 through the inlet 2 during assembly.

[0052] After assembly, the turbine is supported by the protrusion 8a and rotates around the protrusion 8a. The protrusion 8a is round and is centrally located between the first channel 7a and the second channel 7b. The protrusion 8a extends from the end surface (at the end) of the first channel 7a and the second channel 7b toward the switching device 4. Figure 1The plane (shown as line AA in FIG. 1 ) extends toward the inlet 2. The protrusion 8a is received in the hollow portion 4a of the turbine. The turbine may be further supported by an additional protrusion (not shown) which forms part of a fluid supply conduit or an adapter thereof. In this way, another protrusion may be adapted in an additional hollow portion 4b which is arranged at an end of the switching device 4 axially opposite to the hollow portion 4a. It will be apparent to those skilled in the art that various suitable configurations may be utilized to allow rotation of the turbine during use and to allow this component to be separated from the main body 8. For example, in an alternative configuration, the protrusion 8a may form part of the turbine and the hollow portion 4a may form part of the main body 8. In another example, an axial rod may extend through the switching device 4 and the switching device 4 may rotate around it.

[0053] like Figure 1 As shown, the fluid delivery device 1 further comprises a detachable spray plate 9, which comprises a spray face 9a in which a plurality of outlets 3a and 3b are arranged. In an alternative arrangement, the spray plate 9 may be integrally constructed with the body 8 so that it is non-detachable.

[0054] Each of the plurality of outlets 3a, 3b may be connected to a respective through hole spanning the entire thickness of the shower plate 9. In this manner, each of the first selection of outlets 3a may be fluidly connected to the first chamber 5a, and each of the second selection of outlets 3b may be fluidly connected to the second chamber 5b. The shower plate 9 may include a plurality of nozzles (not shown), each of which is fluidly connected to a respective one of the plurality of outlets 3a, 3b.

[0055] The spray plate 9 is generally planar and circular, but other shapes may also be used within the scope of the present disclosure. The flange 91 extends from the periphery of the spray plate 9 in a direction away from the spray face 9a. The inner surface of the flange 91 is threaded and connected to a corresponding threaded portion of the outer surface of the body 8. This allows, for example, the spray plate 9 to be replaced by an alternative spray plate 9 with a different style or number of outlets 3a, 3b. This can improve the level of customization of the fluid delivery device 1. In another exemplary embodiment, the spray plate 9 can be attached to the body 8 via other attachment mechanisms (including but not limited to bayonet fit or adhesive).

[0056] The back side of the shower plate 9, opposite to the shower face 9a, partially defines the first chamber 5a and the second chamber 5b. The shower plate 9 includes a series of first protrusions 9b, which extend from the back side in a direction generally away from the shower face 9a. Similarly, the body 8 includes a series of second protrusions 8b, which extend from the rest of the body 8 toward the shower face 9a. Each first protrusion 9b is configured to cooperate with a corresponding second protrusion 8b of the body 8. The body 8, the back side of the shower plate 9, and the first series of protrusions 9b and the second series of protrusions 8b together form the first chamber 5a and the second chamber 5b. A seal 89 (such as an O-ring) can be positioned between each first protrusion 9b of the shower face 9 and the corresponding second protrusion 8b of the body 8 to prevent fluid from escaping from the first chamber 5a and / or the second chamber 5b during use. In an alternative exemplary embodiment, the protrusion may extend only from the shower plate 9 or body 8, with the seal 89 positioned between the protrusion and another corresponding face of the shower plate 9 or body 8. The second chamber 5b extends in an annular shape around the first chamber 5a, but in other embodiments, other shapes may be used.

[0057] exist Figure 1 and Figure 2 In the example shown, the switching device 4 is a movable element, which is rotatable relative to the body 8. However, within the scope of the present disclosure, the switching device 4 may not contain any moving parts.

[0058] Figure 3 1 shows a bottom view of the fluid delivery device 10. The fluid delivery device 10 is a shower head for showering and is provided with a Figure 1 and Figure 2 The switching device 4 operates in a similar manner to the fluid delivery device 1. The main difference between these devices is that in the fluid delivery device 1, the switching device 4 is a movable element that is rotatable relative to the body 8, while the fluid delivery device 10 is a fluid oscillator and does not rely on any moving parts to continuously cycle between the first operating mode and the second operating mode.

[0059] and Figure 1 and Figure 2Similar to the fluid delivery device 1 in the embodiment of the present invention, the fluid delivery device 10 includes a main body 80, and the main body 80 has: an inlet 20, which is configured to be connected to a fluid supply pipeline, a pipeline or other fluid source (not shown) and receive fluid from the fluid supply pipeline, the pipeline or other fluid source. The fluid delivery device 10 also includes a first chamber 50a and a second chamber 50b. The fluid delivery device 10 further includes a switching device 40, which is arranged in a fluid path between the inlet 20 and the first chamber 50a and the second chamber 50b. The first chamber 50a is connected to the inlet 20 and the switching device 40 via a first channel 70a. Similarly, the second chamber 50b is connected to the inlet 20 and the switching device 40 via a second channel 70b.

[0060] Figure 4 Shows the Figure 3 The switching device 40 comprises a front chamber 41 having a generally triangular shape. Figure 4 4. The front chamber 41 is highlighted with a white dashed line in FIG. 4. The port 42 fluidically connects the inlet 20 to the front chamber 41 at or around the vertex of the front chamber 41. The first channel 70a and the second channel 70b are connected to the bottom edge of the front chamber 41 (located on opposite sides of the front chamber 41). In this example, the first channel 70a and the second channel 70b are connected to the front chamber 41 at opposite ends of the bottom edge. The first channel 70a and the second channel 70b fluidically connect the front chamber 41 to the first chamber 50a and the second chamber 50b, respectively.

[0061] The switching device 40 includes a first feedback loop 43a, which provides a path for the fluid flow from the first channel 70a to the front chamber 41. Similarly, the switching device 40 also includes a second feedback loop 43b, which provides a path for the fluid flow from the second channel 70b to the front chamber 41. The first feedback loop 43a and the second feedback loop 43b are respectively connected to opposite sides of the front chamber 41 (referred to as the first side 41a and the second side 41b, respectively). The first side 41a and the second side 41b of the front chamber 41 are separated by a normal (virtual) of the bottom plane projected through the vertex of the front chamber 41. The first feedback loop 43a is connected to the non-bottom edge of the front chamber 41, so that the first feedback loop 43a and the first channel 70a are both connected to the first side 41a of the front chamber 41. Similarly, the second feedback loop 43b is connected to the other non-bottom edge of the front chamber 41, so that the second feedback loop 43b and the second channel 70b are both connected to the second side 41b of the front chamber 41. In this example, both the first feedback loop 43 a and the second feedback loop 43 b are connected to the front chamber 41 near the apex of the front chamber 41 .

[0062] In this example, the first feedback loop 43a and the second feedback loop 43b follow an angled path defined by straight edges. However, within the scope of the present disclosure, their paths may be of any suitable configuration, such as a meandering curved path. Figure 4 As shown, the first feedback loop 43a may be a mirror image of the second feedback loop 43b. In other implementations, the first feedback loop 43a and the second feedback loop 43b may not be mirror images of each other. The first feedback loop 43a and the second feedback loop 43b may be substantially the same as each other, or may be different from each other.

[0063] The first feedback loop 43a is configured so that the fluid flow from the first feedback loop 43a enters the front chamber 41 in a direction substantially pointing to the second side 41b of the front chamber 41. Similarly, the second feedback loop 43b is configured so that the fluid flow from the second feedback loop 43b enters the front chamber 41 in a direction substantially pointing to the first side 41a of the front chamber 41. This configuration allows the flow from the first feedback loop 43a to interfere with the flow to the first channel 70a. Similarly, the flow from the second feedback loop 43b can interfere with the flow from the front chamber 41 to the second channel 70b. In this way, the switching device 40 is configured to function as described below.

[0064] The switching device 40 has a first operating mode in which there is a first fluid flow rate from the inlet 20 to the first chamber 50a. In the first operating mode, the fluid enters the front chamber 41 through the port 42 and travels to the first chamber 50a through the first channel 70a and then to the first selection 30a of the outlet. A portion of the fluid driving flow flowing through the first channel 70a passes through the first feedback loop 43a and returns into the front chamber 41. This disrupts the flow from the port 42 to the first channel 70a, thereby switching the switching device 40 to the second operating mode.

[0065] In the second operating mode, there is a second fluid flow rate from the inlet 20 to the second chamber 50b. The second fluid flow rate can be equal to the first fluid flow rate or different from the first fluid flow rate. In the second operating mode, the fluid enters the front chamber 41 through the port 42 and travels to the second chamber 50b through the second channel 70b. A portion of the fluid driving flow flowing through the second channel 70b passes through the second feedback loop 43b and returns to the front chamber 41. This interferes with the flow from the port 42 to the second channel 70, thereby switching the switching device 40 back to its first operating mode. In this way, during the use of the fluid delivery device 10, the switching device 40 is continuously cycled between the first operating mode and the second operating mode. The fluid delivery device 10 does not rely on any moving parts to continuously cycle between the first operating mode and the second operating mode.

[0066] The switching device 40 is not powered, and is switched only by the fluid flow through the fluid delivery device 10. This can reduce or minimize the complexity, manufacturing cost, and energy consumption of such devices while improving safety for the user. In this way, the cycle of the switching device 40 between the first operating mode and the second operating mode can be automatic and continuous.

[0067] The fluid flow rate to each of the first chamber 50a and the second chamber 50b is determined by the inlet water pressure and the configuration of the two feedback loops 43a, 43b and the front chamber 41. For example, changing the diameter, length or curvature of the first feedback loop 43a and the second feedback loop 43b can change the period of switching between operating modes, thereby changing the resultant flow pattern of the fluid delivery device 10.

[0068] Figure 5 Shows Figure 3 2. The cross-sectional view of the section of the fluid delivery device 10 in FIG. As shown, the fluid delivery device 10 includes a plurality of fluid delivery outlets 30a, 30b that are in fluid communication with the inlet 20. The first chamber 50a is arranged to supply fluid to the first selection 30a of the plurality of outlets 30a, 30b, and the second chamber 50b is arranged to supply fluid to the second selection 30b of the plurality of outlets 30a, 30b. The fluid delivery device 10 further includes a detachable spray plate 90, which has a spray face 90a, and a plurality of outlets 30a and 30b are arranged in the spray face 90a. In an alternative arrangement, on the contrary, the spray plate 9 can be integrally constructed with the main body 8 so that it is non-detachable. Each of the plurality of outlets 30a, 30b includes a through hole extending through the entire thickness of the spray face 90a. In this way, each of the first selection 30a of the outlet is fluidly connected to the first chamber 50a, and each of the second selection 30b of the outlet is fluidly connected to the second chamber 50b. One or more of the outlets 30a, 30b may include a nozzle (not shown).

[0069] The continuous switching between the first mode of operation and the second mode of operation provided by the switching device 40 can advantageously produce a pulsating flow from the first option 30a of the outlet and the second option 30b of the outlet. This can provide the user with an appropriate water pressure feel while minimizing the total water consumption. The switching device 40 can be configured so that the interval between pulses is about 300 milliseconds. Other intervals between pulses can be used within the scope of the present disclosure. Short pulse interval times can prevent the user from noticing that the flow rate from each outlet is fluctuating. Providing two options 30a, 30b of outlets with flow rate changes offset over time can further mask the flow rate changes to the user of the fluid delivery device 10.

[0070] The shower plate 90 is generally planar and circular, but other shapes may also be used within the scope of the present disclosure. The back of the shower plate 90 opposite the shower face 90a partially defines the first chamber 50a and the second chamber 50b. The shower plate 90 includes a series of first protrusions 90b, which extend from the back in a direction generally away from the shower face 90a. The outermost protrusions 90b are connected to the inner surface of the body 80 to form, for example, a press-fit connection. This connection can allow the shower plate 90 to be replaced, for example, by an alternative shower plate 90 having a different style or number of outlets 30a, 30b. This can improve the customization level of the fluid delivery device 10.

[0071] The body 80 includes a series of second protrusions 80b, which extend away from the rest of the body 80 toward the spray face 90a. Each first protrusion 90b is configured to cooperate with a corresponding second protrusion 80b of the body 80. The body 80, the back of the spray plate 90, and the first series of protrusions 90b and the second series of protrusions 80b together form the first chamber 50a and the second chamber 50b. A seal can be positioned between each first protrusion 90b of the spray face 90 and the corresponding second protrusion 80b of the body 80 to prevent fluid from escaping from the first chamber 50a and / or the second chamber 50b during use. In an alternative exemplary embodiment, the protrusion can extend only from the spray plate 90 or the body 80, and the seal is positioned between the protrusion and another corresponding face of the spray plate 90 or the body 80.

[0072] The body 80 includes a top plate 81, which forms a top surface of at least a portion of the switching device 40. In this example, the top plate 81 forms the top surface of the front chamber, the first feedback loop, the second feedback loop, the first channel, the second channel, the first chamber 50a, and the second chamber 50b. Other parts of the body 80 can alternatively form the top surface of the front chamber, the first feedback loop, the second feedback loop, the first channel, the second channel, the first chamber 50a and / or the second chamber 50b. The top plate 81 is selectively connected to the rest of the body 80 by one or more snap-on connectors, but in some exemplary embodiments, a screw-type adhesive connection can also be used. This can allow the fluid delivery device 10 to be more customizable because the top plate 81 can be replaced by different top plates with different features (such as shape, material, color, finish).

[0073] like Figure 5 As shown, the first chamber 50a and the second chamber 50b extend downward toward the shower plate 90 through the first borehole 51a and the second borehole 51b, respectively. The first chamber 50a is configured to extend at least partially below the switching device 40. In this way, the configuration of the first chamber 50a and the second chamber 50b in contact with the shower plate 90 can be selected independently of the shape and size of the switching device 40. For example, Figure 5 As shown, this may allow part or all of the first selection of outlets 30a to be located directly below the switching device 40.

[0074] refer to Figure 6 , 7A 7B, which shows an enlarged cross-sectional view of a catheter assembly 100 for a fluid delivery device. The catheter assembly 100 includes a catheter 101 configured to transport a fluid flow.

[0075] The catheter assembly 100 further comprises a flow restrictor 102 configured to restrict the flow of a fluid stream along the catheter 101 , thereby creating a pressure drop in the fluid stream downstream of the flow restrictor 102 in use.

[0076] A flow restrictor 102 is arranged inside the conduit 101. In this embodiment, the flow restrictor 102 comprises a thin sheet oriented perpendicular to the longitudinal axis 1001 of the conduit 101. The thin sheet is perforated with a plurality of holes 103. The plurality of holes 103 are arranged in two rings close to the periphery of the disc.

[0077] Alternative orientations and configurations of the flow restrictor 102 are contemplated within the scope of the present disclosure. For example, the configuration of the plurality of holes 103 may be varied to produce a desired level of inflation.

[0078] In this example, the plurality of holes 103 includes 32 holes arranged in two rings near the perimeter of the disk, but other configurations of holes 103 may be used depending on the desired inflation level.

[0079] Since the total flow area through the plurality of holes 103 is substantially smaller than the flow area of ​​the conduit 101, in use, the restrictor 102 generates a pressure drop in the fluid flow downstream of the restrictor 102. It will be apparent to those skilled in the art that other restrictor configurations may be employed without departing from the scope of the present disclosure. The restrictor may have any suitable configuration to generate a pressure drop in the fluid flow downstream thereof.

[0080] The conduit 101 is composed of two generally tubular parts: a first part 101a and a second part 101b, which are configured to be selectively coupled to each other. In this example, the first part 101a is located upstream of the second part 101b. One end of the first part 101a close to the second part 101b has a reduced radius portion 105a, and the reduced radius portion 105a has an outer radius smaller than the remaining part of the first part 101a. A threaded portion is provided on the outer surface of the reduced radius portion 105a. One end of the second part 101b close to the first part 101a has an increased radius portion 105b, and the increased radius portion 105b has an inner radius greater than the remaining part of the second part 101b. The threaded portion is provided on the inner surface of the increased radius portion 105b. The reduced radius portion 105a of the first part 101a is configured to fit at least partially within and threadably engage with the increased radius portion 105b to selectively couple the first and second parts 101a, 101b of the conduit 101. The sealing member 163 in the form of an O-ring is configured to provide a fluid seal between the first and second parts 101a, 101b of the conduit 101.

[0081] In other example embodiments, the catheter 101 may be integrally formed, or the first part 101a and the second part 101b may be connected in other ways including, but not limited to, welding, fusion welding, snap fit, and / or using adhesives.

[0082] The flow restrictor 102 forms one end of a hollow insert 106 that is located within the reduced radius portion 105a of the first part 101a. The hollow insert 106 includes a rim 107 that projects radially away from the flow restrictor 102. The rim 107 is sandwiched between the reduced radius portions 105a of the first part 101a and the second part 101b. This configuration prevents the hollow insert 106 from translating along the conduit 101.

[0083] The duct assembly 100 further includes at least one (including eight in this exemplary embodiment) air introduction channel 130 for transporting the flow of air outside the duct 101 into the duct 101. The eight air introduction channels 130 are substantially evenly distributed on the circumference of the duct 101, and other configurations may also be adopted. In this example, each of the eight air introduction channels 130 includes one of the first group of air introduction passages 131 and one of the second group of air introduction passages 132, the first group of air introduction passages 131 passing through the first part 101a of the duct 101, and the second group of air introduction passages 132 passing through the hollow insert 106.

[0084] The first group of air introduction passages 131 includes eight air introduction passages regularly spaced around the circumference of the reduced radius portion 105a. The second group of air introduction passages 132 includes eight air introduction passages regularly spaced around the circumference of the hollow insert 106 near the restrictor 102. Each of the second group of air introduction passages 132 is arranged to receive air from a corresponding one of the first group of air introduction passages 131 and provide air to the interior of the hollow insert 106.

[0085] The sealing member 160 is disposed on the outer surface of the hollow insert 106 on either side of the second set of air introduction passages 132. In the example shown in the figure, each of the sealing members (e.g., the sealing member 160 of the duct assembly 100) is an O-ring. The sealing member 160 prevents fluid from leaking from the inside of the duct assembly 100 along the first set of air introduction passages 131 to the outside of the duct assembly 100. Similarly, the sealing member 160 also serves to prevent air from entering the duct assembly 100 upstream of the restrictor 102.

[0086] The duct assembly 100 is configured so that air can enter the hollow insert 106 immediately downstream of the flow restrictor 102. At this point, a pressure drop occurs in the duct 101 and the fluid flow is at a high velocity. This will help ensure that air is drawn along the air intake passage 130 and that effective mixing of the air with the fluid flow is achieved to form an aerated fluid flow.

[0087] Applicants have recognized that it may be beneficial to allow selection between different flow characteristics of the fluid delivery device 10'. To this end, the catheter assembly 100 includes an air introduction channel closing device that is operable to actuate the delivery of air along the air introduction channel 130. In the illustrated example, the air introduction channel closing device includes a sleeve 120 that is operable to translate relative to the catheter 101 parallel to the longitudinal axis 1001 of the catheter 101. The sleeve 120 is substantially tubular and surrounds the outer circumference of the reduced radius portion 105a. The inner radius of the sleeve 120 is just greater than the outer radius of the reduced radius portion 105a to produce a tight fit between the two workpieces. The outer radius of the sleeve 120 is substantially equal to: the outer radius of the rest of the first part 101a; and the increased radius portion 105b. In this way, the sleeve 120 is flush with the first part 101a and the second part 101b of the catheter 101.

[0088] The junction between the reduced radius portion 105a and the rest of the first part 101a forms a step, which forms a first contact surface 140a for interacting with the sleeve 120 and serves as an end stop for the sleeve 120 to translate in a first direction 151. The end surface of the increased radius portion 105b adjacent to the first part 101a forms a second contact surface 140b for interacting with the sleeve 120 and serves as an end stop for the sleeve 120 to translate in a second direction 152 opposite to the first direction 151. The sleeve 120 is operable to translate between two end points respectively determined by the first end stop and the second end stop, which respectively define a first state and a second state of the air intake passage closing device.

[0089] Sleeve 120 further includes ridge 170 that enables a user to actuate sleeve 120 between states of sleeve 120. Ridge 170 projects away from catheter 101 toward fluid delivery device 10'. Ridge 170 may be substantially arcuate (e.g., providing a crescent shape configured to fit a user's thumb).

[0090] Fig. 7A The catheter assembly 100 is shown, wherein the sleeve 120 is in a first state. In this state, the rear end of the sleeve 120 contacts the first contact surface 140a of the first part 101a. The front end of the sleeve 120 does not contact the second contact surface 140b of the second part 101b. Therefore, there is a gap between the front end of the sleeve 120 and the second part 101b, opening the air introduction channel 130. Two sealing members 161 and 162 are arranged on the outer surface of the reduced radius portion 105a on either side of the first group of air introduction passages 131. The first of the two sealing members 161 (the one away from the second part 101b) acts to prevent air from entering the catheter 101 via the gap between the rear end of the sleeve 120 and the first contact surface 140a. The inner radius of the sleeve 120 increases toward the front end of the sleeve 120. This configuration ensures that in the first state, there is a gap between the second of the two sealing members 162 and the sleeve 120. In this state, the pressure drop of the fluid flow downstream of the restrictor 102 causes air drawn in through the open air intake passage 130 to mix with the fluid flow in the hollow insert 106 to form an aerated fluid flow. Fig. 7A The dashed arrows in illustrative figures show the flow of air passing through the air introduction passage 130 .

[0091] Figure 7BThe catheter assembly 100 is shown, wherein the sleeve 120 is in a second state. In this state, the front end of the sleeve 120 contacts the second contact surface 140b of the second part 101b, sealing the front end of the sleeve 120 on the second part 101b. Therefore, the air introduction channel 130 is closed, and no air flow enters the catheter 101 from the outside of the catheter 101 along the closed air introduction channel 130. In this state, the fluid flow downstream of the restrictor 102 is not an aerated fluid flow. There is a gap between the rear end of the sleeve 120 and the first contact surface 140a of the first part 101a. In this configuration, each of the two sealing members 161, 162 can inhibit the fluid (such as air or water) from passing between the reduced radius portion 105a and the sleeve 120. The second sealing member 162 near the second part 101b serves to prevent air from entering the catheter 101 between the front end of the sleeve 120 and the second contact surface 140a.

[0092] In an alternative configuration (not shown), instead, the sealing member 162 may be disposed on the inner surface of the sleeve 120, and a groove may be disposed in the reduced radius portion 105a of the first part 101a. In this alternative configuration, the groove may be configured to: align with the sealing member 162 when the sleeve is in its first state to provide a gap between the sealing member 162 and the reduced radius portion 105a; and to be misaligned with the sealing member 162 when the sleeve is in its second state so that there is no gap between the sealing member 162 and the reduced radius portion 105a.

[0093] Sleeve 120 can have one or more intermediate states between the first state and the second state. In this intermediate state, a small gap may exist between the inner surface of sleeve 120 and sealing member 162. When sleeve 120 is so positioned, air introduction channel 130 may be considered as partially opened, and synthetic fluid flow may be inflated to a smaller degree than when sleeve is in the first state. Providing this intermediate state may allow the user to more finely control the degree of inflation of fluid flow.

[0094] Conventional actuation devices (e.g., those that rely on relative rotation of two parts) may cause difficulties for users whose hands may be wet. Typically, such rotational actuation requires two hands, one of which is used to hold each piece. In contrast, in this example, actuation can be achieved by user-controlled translation of sleeve 120 relative to catheter 101 (with the aid of gripping assisted by ridge 170). Due to the positioning of sleeve 120 on handle portion 110 of fluid delivery device 10', and the provision of ridge 170 to assist gripping, the user can easily actuate catheter assembly 100 by simply grasping handle portion 110 with one hand using their palm and fingers and sliding sleeve 120 with the thumb. In this way, catheter 101 can provide an inflation device that can be easily actuated by the user without excessive complexity that results in high manufacturing costs.

[0095] Fig. 8A A fluid delivery device 1000 is shown. Figure 8B A cross-sectional view of fluid delivery device 1000 is shown.

[0096] Fluid delivery device 1000 comprises a handle for use in a shower, comprising a grip portion 110 and a head portion 10 ′.

[0097] The first end of the handle portion 110 includes a threaded portion for connecting the handle portion 110 to a fluid supply conduit (not shown) in use. The handle portion 110 includes a catheter assembly 100. The catheter 101 is configured to transport a fluid flow through the handle portion 110 to the head portion 10'. The inlet 20' of the catheter assembly 100 is located at the first end of the handle portion 110. The catheter assembly 100 is shown in more detail in FIG. Figure 6 , Fig. 7A and Figure 7B and related instructions.

[0098] The head portion 10' comprises one or more internal chambers (not shown) in fluid communication with the conduit 101 and a spray face with a plurality of outlets for delivering fluid to a user in use. The head portion 10' may comprise any suitable head portion for a handle for a shower.

[0099] In an exemplary implementation, fluid delivery device 1000 may include fluid delivery device 1 or 10 described above downstream of catheter assembly 100. For example, any or all features of fluid delivery device 1 or 10 described above may be at least partially disposed within head portion 10'.

[0100] Fig. 93 shows a cross-sectional view of a fluid delivery device 300. In this example, the fluid delivery device 300 includes a shower head 350 for a shower, but may alternatively include other devices (such as a faucet). Fig. 8A and Figure 8B The fluid delivery device 1000 in FIG. Fig. 8A and Figure 8B Similar to the fluid delivery device 1000 in FIG. 1 , the fluid delivery device 300 includes a catheter assembly 400 .

[0101] The conduit assembly 400 is configured to couple to a fluid supply conduit (not shown) and the showerhead 350. The showerhead 350 includes one or more internal chambers 351 in fluid communication with the conduit assembly 400 and a spray face with a plurality of outlets 352 for delivering fluid to a user in use.

[0102] The main difference between these devices is that fluid delivery device 300 is a fixed overhead showerhead, while fluid delivery device 1000 is a handheld showerhead. Fig. 9 As shown, the conduit assembly 400 is integrated into a support pipe 410, and the support pipe 410 fixes the fluid delivery device 300 in the shower room where the fluid delivery device 300 is installed. Fig. 8A and Figure 8B This is in contrast to the illustrated fluid delivery device 1000 in which the catheter assembly 100 forms part of the handle 110 .

[0103] The conduit assembly 400 includes a conduit 401 configured to transport a fluid flow from a fluid supply conduit to a showerhead 350. The conduit 401 is composed of two generally tubular parts: a first part 401a and a second part 401b configured to be selectively coupled to each other. In this example, the first part 401a is located upstream of the second part 401b and is configured to be coupled to the fluid supply conduit. One end of the first part 401a near the second part 401b has a reduced radius portion 405a, and the reduced radius portion 405a has an outer radius smaller than the rest of the first part 401a. A threaded portion is provided on the outer surface of the reduced radius portion 405a. The threaded portion 405b is provided on the inner surface of the second part 401b. The reduced radius portion 405a of the first part 401a is configured to at least partially fit within and threadedly engage with the threaded portion 405b of the second part 401b to selectively couple to the first and second parts 401a, 401b of the catheter 401.

[0104] The first part 401a comprises a flow restrictor 402 configured to restrict the flow of a fluid stream along the conduit 401, thereby generating, in use, a pressure drop in the fluid stream downstream of the flow restrictor 402. The flow restrictor 402 comprises a disk perpendicular to the longitudinal axis 1002 of the conduit 401 and perforated with a plurality of holes 403. In this example, the plurality of holes 403 comprises 32 holes arranged in two rings near the periphery of the disk.

[0105] Since the total flow area through the plurality of holes 403 is substantially less than the flow area of ​​the conduit 401, in use, the restrictor 402 produces a pressure drop in the fluid flow downstream of the restrictor 402. It will be apparent to those skilled in the art that other restrictor configurations may also be employed without departing from the scope of the present disclosure. The restrictor may have any suitable configuration to produce a pressure drop in the fluid flow downstream thereof.

[0106] The first part 401a further includes a plurality of air introduction channels 430 for conveying a flow of air from the outside of the duct 401 into the duct 401. The air introduction channels 430 are distributed around the circumference of the duct 401 substantially evenly.

[0107] The conduit assembly 400 is configured so that air can enter the conduit 401 immediately downstream of the flow restrictor 402. At this point, a pressure drop occurs in the conduit 401 and the fluid flow is at a high velocity. This will help ensure that air is drawn along the air intake channel 430 and that effective mixing of the air with the fluid flow is achieved to form an aerated fluid flow.

[0108] The duct assembly 400 includes an air intake passage closing device that is operable to actuate the delivery of air along the air intake passage 430. In the illustrated example, the air intake passage closing device includes a sleeve 420 that is operable to translate relative to the duct 401 parallel to the longitudinal axis 1002 of the duct 401. The sleeve 420 is substantially tubular and surrounds the outer circumference of the first part 401a. The inner radius of the sleeve 420 is just larger than the outer radius of the first part 401a so that a tight fit is produced between the two parts.

[0109] A step is formed on the outer surface of the first part 401a, which forms a first contact surface 440a for interacting with the sleeve 420 and serves as an end stop for the sleeve 420 to translate in the first direction. Another step is formed at the junction between the first part 401a and the second part 401b, and the second part 401b forms a second contact surface 440b for interacting with the sleeve 420. The second contact surface 440b serves as an end stop for the sleeve 420 to translate in a second direction opposite to the first direction. The sleeve 420 is operable to translate between two end points respectively determined by the first end stop and the second end stop, which respectively define the first state and the second state of the air introduction passage closing device.

[0110] The sleeve 420 further includes a ridge 470 that enables a user to actuate the sleeve 420 between states of the sleeve 420. The ridge 470 protrudes around the circumference of the sleeve 420 away from the catheter 401.

[0111] Fig. 9 The duct assembly 400 is shown when the sleeve 420 is in a first state. In this state, the rear end of the sleeve 420 contacts the first contact surface 440a of the first part 401a. The front end of the sleeve 420 does not contact the second contact surface 440b of the second part 401b. Therefore, there is a gap between the front end of the sleeve 420 and the second part 401b, opening the air introduction channel 430.

[0112] When the sleeve 420 is in the second state, the front end of the sleeve 420 contacts the second contact surface 440b of the second part 401b, sealing the front end of the sleeve 420 on the second part 401b. Therefore, in this state, the air introduction channel 430 is closed, and no air flow is transported from the outside of the conduit 401 to the conduit 401 along the closed air introduction channel 430. The fluid flow downstream of the restrictor 402 is not an aerated fluid flow. There is a gap between the rear end of the sleeve 420 and the first contact surface 440a of the first part 401a.

[0113] A sealing member (not shown) such as an O-ring is provided on the outer surface of the first piece 401a on either side of the air introduction passage 430. The sealing member functions to prevent air from entering the duct assembly 400 when the sleeve 420 is in the second state.

[0114] Conventional actuation devices (e.g., those that rely on relative rotation of two parts) may cause difficulty for users whose hands may be wet. Typically, such rotational actuation requires two hands, one of which is used to hold each part. In contrast, in this example, actuation can be achieved by user-controlled translation of sleeve 420 relative to catheter 401 (with the aid of a grip assisted by ridge 470). In this way, catheter assembly 400 can provide an inflation device that can be easily actuated by a user without excessive complexity that results in high manufacturing costs.

[0115] Fig.10 5 shows a cross-sectional view of a fluid delivery device 500. The fluid delivery device 500 includes a shower head 550 for showering and is provided with a shower head 550 having a plurality of shower heads 550 and a plurality of shower heads 550. Fig. 9 The fluid delivery device 500 operates in a similar manner to the fluid delivery device 300. The fluid delivery device 500 includes a catheter assembly 600 that is configured to be coupled to a fluid supply conduit (not shown).

[0116] In this example, the showerhead 550 includes Figures 1 to 3 The showerhead 550 further includes: one or more internal chambers 551 in fluid communication with the switching device 553; and a spray face 554 with a plurality of outlets 552 for delivering fluid from the one or more internal chambers 551 to a user. The conduit assembly 600 is integrated into the showerhead 550 and is completely disposed within the showerhead 550. As with the previous embodiments, the conduit assembly 600 is operable to selectively aerate the flow traveling therethrough.

[0117] As described below, the catheter assembly 600 is configured to Fig. 9 For example, the air introduction passage closing device of the duct assembly 400 includes a sleeve 420, while the air introduction passage closing device of the duct assembly 600 does not include a sleeve, but actuates the inflation of the flow via the rotation of the movable plate 620.

[0118] The conduit assembly 600 includes a conduit 601. The conduit 601 is configured to transport a fluid flow from a fluid supply pipeline to the switching device 553.

[0119] The conduit assembly 600 includes a restrictor 602, which is configured to limit the flow of the fluid stream along the conduit 601, thereby generating a pressure drop in the fluid stream downstream of the restrictor 102 in use. The restrictor 602 includes a section of the conduit 601, wherein the cross-sectional area gradually narrows along the direction 1003 of the fluid stream. It will be apparent to those skilled in the art that other restrictor configurations may also be employed without departing from the scope of the present disclosure. The restrictor may have any suitable configuration to generate a pressure drop in the fluid stream downstream thereof.

[0120] Immediately downstream of the restrictor 602, the conduit 601 is perforated with one or more air intake passages 630 for conveying an air flow from outside the conduit 601 into the conduit 601. At this point, there is a pressure drop in the conduit 601 and the fluid flow is at a high velocity. This will help ensure that air is drawn along the one or more air intake passages 630 and that effective mixing of the air with the fluid flow is achieved, thereby forming an aerated fluid flow.

[0121] As previously mentioned, the duct assembly 600 includes an air intake passage closing device that is operable to actuate the delivery of air along one or more air intake passages 630. In the illustrated example, the air intake passage closing device includes a movable plate 620 that forms a rear exterior surface of the showerhead 550. The movable plate 620 is operable to move relative to the one or more air intake passages 630. In this example, the movable plate 620 is operable to rotate relative to the rest of the fluid delivery device 500 about an axis 1004 of the fluid delivery device 500 upon user actuation. The axis 1004 passes through the center of the spray face 554 and is substantially vertically aligned therewith.

[0122] The movable plate 620 is perforated with one or more through-thickness holes 640 arranged to selectively align with one or more air intake passages 630 .

[0123] The movable plate 620 is operable to actuate between a first state and a second state. Fig.10 The duct assembly 600 is shown with the movable plate 620 in a first state. In this state, the movable plate 620 is arranged so that the one or more through-thickness holes 640 are at least partially aligned with the one or more air intake channels 630, thereby allowing air flow into the one or more air intake channels 630. Thus, in this state, the air intake channels 630 are open and air can be transported along the one or more air intake channels 630 from the outside of the duct 601 into the duct 601. In this state, the fluid flow downstream of the restrictor 602 is referred to as an aerated fluid flow.

[0124] When the movable plate 620 is arranged in the second state, the one or more through-thickness holes 640 are completely misaligned with the one or more air intake passages 630, thereby preventing air flow from entering the one or more air intake passages 630. Therefore, in this state, the one or more air intake passages 630 are closed and air cannot be transported from the outside of the duct 601 to the duct 601 along the one or more air intake passages 630. Therefore, in this state, the fluid flow downstream of the restrictor 602 is not an aerated fluid flow.

[0125] The movable plate 620 may include a handle (not shown) to enable a user to actuate the movable plate 620 between the first state and the second state. This configuration may allow the movable plate to be set to either the first state or the second state during assembly, thereby limiting the number of different parts required to produce showerheads with different resultant flow characteristics.

[0126] Fig.11 A cross-sectional view of a fluid delivery device 201 is shown. In this example, Fig.11 The fluid delivery device 201 and Figure 1 The fluid delivery device 1 shown in is substantially similar. The difference between the fluid delivery device 201 and the fluid delivery device 1 is that the fluid delivery device 201 has a device for adjusting the position of the switching device relative to the inlet of the first channel and the second channel. This is achieved by providing an actuator assembly 200 in which the switching device is integrated.

[0127] The fluid delivery device 201 includes a body 208 having an inlet 202 and a plurality of fluid delivery outlets 203a, 203b, the inlet 202 being configured to be coupled to a fluid supply conduit (not shown) and receive fluid from the fluid supply conduit, and the plurality of fluid delivery outlets 203a, 203b being in fluid communication with the inlet 202. The fluid delivery device 201 also includes a first chamber 205a and a second chamber 205b, the first chamber 205a leading to a first selection 203a of the plurality of outlets 203a, 203b, and the second chamber 205b leading to a second selection 203b of the plurality of outlets 203a, 203b. At least one of the first selection 203a of the outlet and the second selection 203b of the outlet includes more than one outlet.

[0128] The actuator assembly 200 forms part of the handle of the fluid delivery device 201. The actuator assembly 200 is arranged in the fluid path between the inlet 202 and the plurality of outlets 203a, 203b and is configured to receive fluid from the fluid supply pipeline (when used). The actuator assembly 200 includes a switching device 204, which is operable to control the fluid flow to the plurality of outlets 203a, 203b.

[0129] The switching device 204 is configured such that it has a first operating mode and a second operating mode, in which there is a first fluid flow rate from the inlet 202 to the first chamber 205a, and in which there is a second fluid flow rate from the inlet 202 to the second chamber 205b. In the first operating mode, the fluid flow rate from the inlet to the second chamber is not equal to the second fluid flow rate. During use of the fluid delivery device 201, the switching device 204 is caused to continuously cycle between the first operating mode and the second operating mode.

[0130] In this example, the first selection of outlets 203a and the second selection of outlets 203b each include more than one outlet. The first selection of outlets 203a and the second selection of outlets 203b each include a plurality of outlets radially arranged in a ring around the central axis 206 of the fluid delivery device 201. The central axis 206 passes through the center of the spray face 209a and is perpendicular to the spray face 209a at this point. Figure 1 The cross-sectional view of shows only two outlets of each of the first selection of outlets 203a and the second selection of outlets 203b.

[0131] The first chamber 205a is connected to the inlet 202 and the switching device 204 via one or more channels 207a (referred to as first channels 207a). Similarly, the second chamber 205b is connected to the inlet 202 and the switching device 204 via one or more channels (referred to as second channels, not shown).

[0132] The body 208 includes two first channels 207a and two second channels (not shown). The first channels 207a and the second channels are alternately spaced around a portion of the body 208 such that the two first channels 207a are opposite to each other and the two second channels are also opposite to each other.

[0133] In this example, the switching device 204 is a movable element that rotates relative to the body 208. The switching device 204 can be a turbine or a helical threaded rod, and can partially or completely close the opening to the first channel 207a and / or the second channel at certain positions. Alternatively, the switching device 204 can not completely close the opening of the first channel 207a and / or the second channel at any position during its rotation. This can ensure that the flow rate through the first channel 207a and the second channel is always non-zero. In this example, the switching device 204 is a turbine arranged in the fluid path between the inlet 202 and the multiple outlets 203a, 203b, and is coaxial with the inlet 202.

[0134] In this example, the switching device 204 is a turbine with two folded symmetries down its axis. The configuration of the switching device 204 and the arrangement of the first channel 207a and the second channel enable the phase of the flow in one of the two first channels 207a to be the same as the phase of the flow in the other of the first channels 207a. Similarly, the phase of the flow in one of the two second channels can be the same as the other of the second channels.

[0135] The fluid flow rate of each of the first and second channels 207a is defined by the inlet water pressure and the size of the opening between the switching device 204 and the respective channel. The relevant opening is located between the respective channel 207a and the turbine blades which shield said channel 207a.

[0136] exist Fig.11 In the figure, the fluid delivery device 201 is shown so that the switching device 204 is in a first operating mode. In this mode, the fluid flow rate from the inlet 202 to the first chamber 205a is the first fluid flow rate. The fluid flow rate from the inlet 202 to the second chamber 205b is not equal to the second fluid flow rate. When the switching device 204 rotates, the switching device 204 switches from its first operating mode to its second operating mode, and the opening between the blades of the turbine and the first channel 207a and the second channel changes. The fluid flow rate from the inlet 202 to the second chamber 205b becomes the second fluid flow rate. The fluid flow rate from the inlet 202 to the first chamber 205a also changes so that it is not equal to the first fluid flow rate.

[0137] As the turbine continues to rotate, the switching device (turbine) 204 continuously cycles between the first operating mode and the second operating mode. This can be beneficial because a pulsed flow can be achieved, which can provide the user with a suitable water pressure sense while minimizing the total water consumption. The fluid delivery device 201 can be configured so that in use, the switching device 204 can rotate at approximately 200 revolutions per minute. The short pulse interval time can prevent the user from noticing that the flow rate from each outlet is fluctuating. Providing two options 203a, 203b of an outlet with a flow rate change that shifts over time can further mask the flow rate change to the user of the fluid delivery device 201.

[0138] In this embodiment, the switching device 204 is not powered, although it may be powered in other embodiments. The switching device 204 is driven only by the fluid flow through the fluid delivery device 201. This can minimize the complexity, manufacturing cost, and energy consumption of such devices while improving safety for the user. In this way, the cycle of the switching device 204 between the first operating mode and the second operating mode can be automatic and continuous.

[0139] The resulting flow pattern of fluid delivery device 201 may be altered by changing the shape and number of turbine blades of switching device 204. For example, the number or spacing of blades may change the pulse spacing period for a given inlet fluid pressure.

[0140] The actuator assembly 200 includes a first workpiece 210, a second workpiece 220, and a third workpiece 230. In the present example, the first workpiece 210 and the second workpiece 220 are both generally tubular. The second workpiece 220 is received in the first workpiece 210 such that the first workpiece 210 surrounds the second workpiece 220. The switching device 204 is received in the second workpiece 220. An end of the second workpiece 220 away from the inlet 202 includes an end plate 222. The end plate 222 includes a series of perforations, each of which is aligned with one of the first channel 207a and the second channel to allow fluid to flow therebetween. The end plate 222 further includes a central protrusion 223, which is arranged to axially support the switching device 204 when the switching device 204 rotates in use. The central protrusion 223 is circular and is maintained in a line with the central axis 260 of the actuator assembly 200. The protrusion 223 extends from a plane (defined by the inlet 207a') including the first channel 207a and the second channel. Fig.11 BB line in FIG. 2 (shown) extends toward the inlet 202. After assembly, the protrusion 223 is received in the hollow portion 204a of the switching device 204.

[0141] The third workpiece 230 of actuator assembly is positioned in the third workpiece 220, and comprises shaft 231 and halo 232. Shaft 231 is positioned along the central axis of actuator assembly 200. The first end of shaft 231 near inlet 202 is fixed on supporting halo 232 by one or more pillars 234. Halo 232 is generally tubular, and is configured to be adapted in the inner surface of second workpiece 220 and be connected to the inner surface of second workpiece 220. One or more passages 235 are formed between halo 232 and shaft 232. Passage 235 allows fluid flow from inlet 202 to switching device 204.

[0142] The second end of the shaft remote from the inlet 202 forms an additional protrusion 233 which further supports the turbine while allowing the switching device 204 to rotate relative to the third part 230 .

[0143] The fluid delivery device 201 may be configured to allow replacement of the switching device 204 and / or the actuator assembly 200. This may allow the flow pattern of the fluid delivery device 201 to be selected for a given application.

[0144] In this example, the actuator assembly 200 is separable from the body 208. The inlet 202 is configured to selectively couple to a fluid supply conduit or an adapter thereon (not shown) by means of a helical thread. The fluid delivery device is configured to allow the third workpiece 230 and the switching device 204 to be removed / inserted from / into the inlet 202. This enables easy assembly and disassembly of the actuator assembly, thereby allowing the switching device 204 to be replaced with an alternative switching device when necessary.

[0145] like Fig.11 As shown, the fluid delivery device 201 further includes a detachable spray plate 209, which includes a spray face 209a, and a plurality of outlets 203a and 203b are arranged in the spray face 209a. Each of the plurality of outlets 203a, 203b can be connected to a corresponding through hole across the entire thickness of the spray plate 209. In this way, each of the first selection 203a of the outlet can be fluidly connected to the first chamber 205a, and each of the second selection 203b of the outlet can be fluidly connected to the second chamber 205b. The spray plate 209 may include a plurality of nozzles (not shown), each of the plurality of nozzles being fluidly connected to a corresponding one of the plurality of outlets 203a, 203b.

[0146] The spray plate 209 is generally planar and circular, with a flange 291 extending from its periphery in a direction away from the spray face 209a. The inner surface of the flange 291 is threaded and coupled to a corresponding threaded portion of the outer surface of the body 208. This can allow the spray plate 209 to be replaced, for example, by an alternative spray plate 209 having a different style or number of outlets 203a, 203b. This can improve the level of customization of the fluid delivery device 201.

[0147] The back side of the shower plate 209 opposite to the shower face 209a partially defines the first chamber 205a and the second chamber 205b. The shower plate 209 includes a series of first protrusions 209b extending from the back side in a direction generally away from the shower face 209a. Similarly, the body 208 includes a series of second protrusions 208b extending away from the rest of the body 208 toward the shower face 209a. Each first protrusion 209b is configured to cooperate with a corresponding second protrusion 208b of the body 208. The body 208, the back side of the shower plate 209, and the first series of protrusions 209b and the second series of protrusions 208b together form the first chamber 205a and the second chamber 205b. A seal 289 (eg, an O-ring) may be positioned between each first protrusion 209b of the spray face 209 and a corresponding second protrusion 208b of the body 208 to prevent fluid from escaping from the first chamber 205a and / or the second chamber 205b during use. The second chamber 205b extends in an annular shape around the first chamber 205a.

[0148] Fig.12 2 is an enlarged view of a cross section of the actuator assembly 200. As shown, the second workpiece 220 and the third workpiece 230 are operable to translate relative to the first workpiece 210. In this example, the second workpiece 220 and the third workpiece 230 are operable to translate along the central axis 260 of the actuator assembly 200. This translation Fig.12 This is shown by double arrow 240 .

[0149] The second workpiece 220 includes a handle 221 for user actuation of the actuator assembly 200. In this example, the handle 221 includes a protrusion that extends outside the first workpiece 210, enabling a user to slide the second workpiece 220 and the third workpiece 230 relative to the first workpiece 210. The handle 221 is received by the latch 211, which is arranged parallel to the central axis 260 of the actuator assembly 200. When in use, the latch 211 serves to prevent rotation of the first part 210 relative to the second part 220. The latch 211 has a first end 211a and a second end 211b, each of which limits the extent of axial sliding between the two parts 210, 220.

[0150] The first workpiece 210 is fixedly coupled to the body 208. Thus, translation of the second workpiece 220 and the third workpiece 230 along the central axis 260 changes the relative position of the switching element 204 and the inlets 207a' of the first and second channels.

[0151] exist Fig.12, the actuator assembly 200 is shown in a first terminal position, where the handle 221 has slid into contact with the first end 211a of the slot 211. In this position, there is a minimum gap between the switching device 204 and the plane including the first channel 207a and the entrance 207a' of the second channel (as shown by line BB). In this example, the actuator assembly 200 is configured so that in the first terminal position, there is no gap between the switching device 204 and the plane BB.

[0152] This arrangement may provide different pulses to each of the first channel 207a and the second channel as the switching device 204 continues to rotate during use.

[0153] Fig.13 A cross-sectional view of the actuator assembly 200 in the second end position is shown. In this figure, one of the second channels 207b of the body 208 can be seen.

[0154] In the second terminal position, the handle 221 has been slid into contact with the second end 211b of the slot 211. There is a maximum gap 250 between the switching device 204 and the plane including the inlets 207a', 207b' of the first channel 207a and the second channel 207b (as shown by line BB). The maximum gap 250 may be greater than or equal to 3mm, 5mm or 10mm. The maximum gap 250 may be less than or equal to 5mm, 10mm or 20mm.

[0155] This arrangement can provide diffuse pulses to each of the first channel 207a and the second channel 207b when the switching device 204 is continuously rotated during use. Therefore, as the switching device 204 rotates, the flow to each of the first chamber and the second chamber can vary less over time than when the actuator assembly 200 is in the first terminal position.

[0156] The actuator assembly 200 may be operable at any number of positions between the first end position and the second end position. This may allow a user to select from a continuous range of diffusivities of the flow pulsations.

[0157] Fig.14A bathing system 700 is shown that includes a fluid delivery device 701. The fluid delivery device 701 can be any suitable fluid delivery device within the scope of the present disclosure, such as fluid delivery device 1, fluid delivery device 10, or fluid delivery device 10'. The bathing system 700 further includes a fluid supply conduit 702 that is fluidically connected to the fluid delivery device 701. The fluid supply conduit 702 can be releasably connected to the fluid delivery device 701 by means of any suitable device (e.g., a cooperating spiral thread or a snap-on connector). The fluid supply conduit 702 is configured to supply a fluid from a fluid source (e.g., a mixing valve 703) to the fluid delivery device 701.

[0158] One or more panels 704 may partially or completely define the bathing system 700. In this example, the fluid delivery device 701 is a shower head and the bathing system 700 is a shower system. The panels 704 at least partially define a shower enclosure. One or more panels 704 may comprise a wall of a bathing environment.

[0159] Bathing system 700 may be any suitable bathing system, and it will be appreciated that the teachings of the present disclosure may be applied to other plumbing systems (eg, fire sprinkler systems).

[0160] A first aspect provides a fluid delivery device, comprising: an inlet for receiving fluid from a fluid supply pipe; a plurality of outlets, the plurality of outlets being fluidly connected to the inlet; two or more chambers, the two or more chambers comprising a first chamber and a second chamber, the first chamber being arranged to supply fluid to a first selection of the plurality of outlets, the second chamber being arranged to supply fluid to a second selection of the plurality of outlets; and a switching device, the switching device being arranged between the inlet and the two or more chambers, the switching device being operable to control the flow of fluid to the plurality of outlets; wherein the switching device is configured so that it has a first operating mode and a second operating mode, in the first operating mode, there is a first fluid flow rate from the inlet to the first chamber, and in the second operating mode, there is a second fluid flow rate from the inlet to the second chamber; wherein, in the first operating mode, the fluid flow rate from the inlet to the second chamber is not equal to the second fluid flow rate; and wherein, during use of the fluid delivery device, the switching device is caused to cycle between the first operating mode and the second operating mode.

[0161] By cycling (e.g., continuously) between the first mode of operation and the second mode of operation, the showerhead can provide an appropriate sense of fluid pressure during use. If the cycling between the first mode of operation and the second mode of operation is fast enough, the user may not notice the cycling between the first mode of operation and the second mode of operation, and may notice that they are experiencing water from both the first selection of multiple outlets and the second selection of multiple outlets. By cycling between the first mode of operation and the second mode of operation, the showerhead can provide an appropriate sense of fluid pressure to the user during use while reducing or minimizing the total fluid usage.

[0162] At least one of the first selection of multiple outlets and the second selection of multiple outlets may include multiple outlets.

[0163] The second fluid flow rate may be less than the first fluid flow rate.

[0164] Alternatively, the second fluid flow rate may be greater than or equal to the first fluid flow rate.

[0165] The fluid delivery device may be configured such that in the second mode of operation, a fluid flow rate from the inlet to the first chamber is not equal to the first fluid flow rate.

[0166] The first fluid flow rate and the second fluid flow rate may be non-zero.

[0167] The fluid delivery device may be configured such that in the first operating mode, there is a non-zero fluid flow from the inlet to the second chamber. Additionally, or alternatively, the fluid delivery device may be configured such that in the second operating mode, there is a non-zero fluid flow from the inlet to the first chamber.

[0168] In the first mode of operation, there may be no fluid flow from the inlet to the second chamber.

[0169] In the second mode of operation, there may be no fluid flow from the inlet to the first chamber.

[0170] Either the first selection of multiple outlets or the second selection of multiple outlets may consist of a single outlet.

[0171] At least one of the plurality of outlets may be common to a first selection of the plurality of outlets and a second selection of the plurality of outlets.

[0172] None of the plurality of outlets may be common to both the first selection of the plurality of outlets and the second selection of the plurality of outlets.

[0173] The cycling between the first mode of operation and the second mode of operation may be driven by purely structural means without the use of computer logic.

[0174] The first chamber and / or the second chamber may have any suitable shape.

[0175] The first chamber and / or the second chamber may be at least partially arcuate and may extend around a periphery of the fluid delivery device.

[0176] One of the first chamber and the second chamber may be partially or completely circumferentially received within the other of the first chamber and the second chamber.

[0177] The fluid flow device may comprise one or more other selections of the plurality of outlets.The fluid flow apparatus may be configured such that the supply of fluid to one or more other selections of the plurality of outlets bypasses the switching device.

[0178] The fluid delivery device may include one or more other chambers, wherein one or more of the other chambers are configured to provide fluid flow from the switching device to one of one or more other selections of the plurality of outlets.

[0179] In one implementation, the switching device and / or any parts thereof must not move relative to the rest of the fluid delivery device by translation, rotation or otherwise during continuous cycling between the first mode of operation and the second mode of operation.

[0180] The switching device may be a fluid oscillator.

[0181] The fluid delivery device may include two or more channels, each channel configured to fluidly connect the switching device to a respective one of the two or more chambers.

[0182] In at least one operating mode, the switching device may be fluidically connected to the first chamber via a first channel. In at least one operating mode, the switching device may be fluidically connected to the second chamber via a second channel.

[0183] The switching device may include a front chamber, the front chamber being connected to the first chamber through a first channel fluid in one or more channels. The front chamber may be connected to the second chamber through a second channel fluid in one or more channels. The switching device may include a first feedback loop, the first feedback loop providing a path for fluid flow from the first channel to the front chamber. The switching device may include a second feedback loop, the second feedback loop providing a path for fluid flow from the second channel to the front chamber.

[0184] The first channel and the second channel can be connected to different sides (e.g., opposite sides) of the antechamber. The first feedback loop and / or the first channel can be connected to a first side of the antechamber. The second feedback loop and / or the second channel can be connected to a second side of the antechamber.

[0185] The switching device may be configured such that fluid flow from the first feedback loop interferes with fluid flow to the first channel, thereby switching the switching device from its first mode of operation to its second mode of operation. The switching device may be configured such that fluid flow from the second feedback loop interferes with fluid flow to the second channel, thereby switching the switching device from its second mode of operation to its first mode of operation.

[0186] The first feedback loop may be configured such that during use, fluid flow from the first feedback loop enters the front chamber in a direction substantially pointing toward the side of the front chamber or the second side of the front chamber. The second feedback loop may be configured such that fluid flow from the second feedback loop enters the front chamber in a direction substantially pointing toward the side of the front chamber or the first side of the front chamber.

[0187] In one implementation, the switching device may include or be composed of a movable element, which is configured to at least partially block and at least partially clear the flow of fluid from the inlet to the first chamber and the flow of fluid from the inlet to the second chamber in a continuous cycle, so that in use, the switching device continuously cycles between the first operating mode and the second operating mode.

[0188] The movable element may be non-powered. Movement of the movable element may be driven solely by fluid flow from the inlet.

[0189] Alternatively, the movable element may be powered. For example, the movement of the movable element may be driven by a motor.

[0190] The movable element may be rotatable.

[0191] The movable element may comprise or consist of a turbine. The turbine may comprise or consist of one or more curved blades fixedly connected to a shaft oriented parallel to the axis of rotation of the turbine.

[0192] The movable element may be removable.

[0193] In a first operating mode, the switching device partially or completely closes the opening to the first channel. In a second operating mode, the switching device partially or completely closes the opening to the second channel.

[0194] The fluid delivery device comprises two or more chambers (including a first chamber and a second chamber). For example, the fluid delivery device may comprise three, four, five or ten chambers.

[0195] The plurality of outlets comprises two or more selections of outlets (comprising a first selection of the plurality of outlets and a second selection of the plurality of outlets). For example, the plurality of outlets may comprise three, four, five or ten selections of the plurality of outlets.

[0196] The switching device may be configured so that it has three or more operation modes (including the first operation mode and the second operation mode).For example, the switching device may be configured so that it has three, four, five or ten operation modes.

[0197] Each of the three or more operating modes can be associated with a corresponding one of the two or more chambers. The switching device can be configured so that in any given operating mode of the three or more operating modes, there is a given non-zero fluid flow rate from the inlet to one of the two or more chambers associated with the operating mode. For example, when the switching device is in a third operating mode of the three or more operating modes, there can be a third fluid flow rate from the inlet to a third chamber of the two or more chambers. When the switching device is in a fourth operating mode of the three or more operating modes, there can be a fourth fluid flow rate from the inlet to a fourth chamber of the two or more chambers.

[0198] The valve device may be configured such that in any given one of three or more operating modes:

[0199] a. there is a given fluid flow rate from the inlet to a chamber of three or more chambers associated with a given operating mode; and

[0200] b. For each of the remaining chambers of the three or more chambers, there is a corresponding alternative fluid flow rate from the inlet to that one of the remaining chambers. The alternative fluid flow rate may be less than or greater than, but not equal to, a given non-zero fluid flow rate that occurs when the switching device is operated in one of the three or more operating modes associated with the remaining chambers. Some or all of the alternative fluid flow rates may be zero.

[0201] During use of the fluid delivery device, the switching device may be caused to cycle (eg, continuously cycle) between each of the three or more operating modes.

[0202] By cycling between three or more operating modes (eg, continuously cycling), the showerhead may provide the user with an appropriate fluid pressure feel during use while reducing or minimizing overall fluid usage.

[0203] Each of the two or more channels may be connected at a different location along an edge (eg, base edge) of the front chamber.

[0204] The switching device may be configured to cause fluid flow from the first feedback loop and / or the second feedback loop to interfere with fluid flow to some of the two or more channels, thereby causing the switching device to switch between operating modes.

[0205] In one implementation, the movable element may be configured to at least partially block and at least partially clear fluid flow from the inlet to each of the two or more chambers in a cycle (e.g., a continuous cycle) such that, in use, the switching device cycles between operating modes (e.g., a continuous cycle).

[0206] The fluid delivery device may include a spray plate having a spray face in which one or more of the outlets are disposed. The spray plate may be a removable spray plate.

[0207] The fluid delivery device may include a showerhead (eg, a showerhead for a shower or a faucet).

[0208] The fluid delivery device can be configured such that the switching device switches between its first operating mode and second operating mode at a rate of up to or at least 100 Hz, up to or at least 50 Hz, up to or at least 20 Hz, up to or at least 10 Hz, up to or at least 8 Hz, up to or at least 5 Hz, up to or at least 4 Hz or up to or at least 3 Hz.

[0209] The fluid may include or consist essentially of water, although other fluids may be used in different exemplary embodiments.

[0210] The inlet of each of the two or more channels may be arranged on a common plane.

[0211] The fluid delivery device may include an actuator assembly configured to adjust a position of the switching device relative to inlets of the two or more channels.

[0212] The actuator assembly may be disposed in a fluid path between an inlet of the fluid delivery device and an inlet of each of the two or more channels. The actuator assembly is operable to receive fluid from a fluid supply conduit and supply fluid to the two or more channels via the switching device.

[0213] The switching device may be received within the actuator assembly.

[0214] The actuator assembly may include one or more passages for fluid flow from the inlet to the switching device.

[0215] The actuator assembly may include a first workpiece that forms an outer surface of the fluid delivery device.

[0216] The actuator assembly may include a second workpiece that fits at least partially within the first workpiece.

[0217] The actuator assembly may include a third workpiece configured to support the switching device.

[0218] The second work piece may be fixed relative to the third work piece.

[0219] The actuator assembly may be configured such that the second workpiece and the third workpiece are movable relative to the first workpiece. For example, the second workpiece and the third workpiece are operable to translate along a central axis of the actuator assembly.

[0220] The second workpiece may include a handle for user actuation of the actuator assembly. The handle may include a protrusion extending outside of the first workpiece to enable a user to slide the second workpiece and the third workpiece relative to the first workpiece.

[0221] The actuator assembly may be configured to prevent rotation of the second workpiece and the third workpiece relative to the first workpiece.

[0222] The first part may include a latching slot arranged to receive the protrusion. The latching slot may be configured to prevent rotation of the first part relative to the second part. The latching slot may be arranged parallel to a central axis of the actuator assembly.

[0223] Translation of the second workpiece and the third workpiece along the central axis may change the relative position of the switching element and the inlets of the two or more channels.

[0224] Changing the relative position of the switching element to the inlets of the two or more channels may change one or more characteristics of the flow from the plurality of outlets.

[0225] The slot may have a first end and a second end opposite the first end. The handle may be operable between a first terminal position, in which the handle has been slid to contact the first end of the slot, and a second terminal position, in which the handle has been slid to contact the second end of the slot.

[0226] When the handle is in the first terminal position, there may be a minimum gap between the switching device and the entrances to the two or more passages. For example, when the handle is in the first terminal position, there may be no gap between the switching device and the entrances to the two or more passages.

[0227] When the handle is in the first end position, the fluid delivery device may provide different pulses to each of the two or more channels during use as the switching device is rotated (eg continuously rotated).

[0228] When the handle is in the second terminal position, there may be a maximum gap between the switching device and the entrances of the two or more channels. The maximum gap may be greater than or equal to 3 mm, 5 mm or 10 mm. The maximum gap may be less than or equal to 5 mm, 10 mm, 20 mm or 30 mm.

[0229] When the handle is in the second end position, the fluid delivery device may provide diffuse pulses to each of the two or more channels as the switching device is rotated (eg continuously rotated) during use.

[0230] The handle may be operable in any of a number of positions between the first end position and the second end position. This may allow a user to select from a continuous range of diffusivities of the flow pulse.

[0231] The second workpiece may be substantially tubular and positioned within the first workpiece.The third workpiece and / or the switching device may be received within the second workpiece.

[0232] The second or third workpiece may include an end plate at an end remote from the inlet of the fluid delivery device. The end plate may include a series of perforations, each perforation being aligned with one of the two or more channels to allow fluid to flow therebetween.

[0233] The end plate may comprise a central protrusion arranged to axially support the switching device when the switching device is rotated in use.

[0234] The central protrusion may be circular and aligned with the central axis of the actuator assembly.

[0235] The third workpiece may include a shaft located along the central axis of the actuator assembly. The third workpiece may include a light ring member fixed to the shaft by one or more struts. The light ring member may be generally tubular and configured to fit within and be coupled to the inner surface of the second workpiece.

[0236] One or more passage halos of the actuator assembly may be formed between the halos and the shaft.

[0237] In an alternative configuration, the switching device may be translationally fixed relative to the first workpiece, and the entrance to one or more channels may be operable to translate. In this configuration, the second workpiece may be fixed relative to the entrances to two or more channels, so that sliding the handle causes the entrances to the two or more channels to translate, thereby adjusting the position of the switching device relative to the entrances to the first channel and the second channel.

[0238] The second workpiece and the third workpiece may be integrally formed and consist of a single component. Alternatively, the second workpiece and the third workpiece may be two different components fixedly connected (eg, by an adhesive).

[0239] The fluid delivery device may be configured to allow replacement of the switching device and / or the actuator assembly. This may allow the flow pattern of the fluid delivery device to be selected for a given application.

[0240] The actuator assembly may form part of a handle of the fluid delivery device.

[0241] A second aspect provides a conduit assembly, comprising: a conduit configured to transport a fluid flow; a flow restrictor configured to restrict the flow of the fluid flow along the conduit, thereby generating a pressure drop in the fluid flow downstream of the flow restrictor during use; one or more air inlet channels, the one or more air inlet channels being used to transport a flow of air from outside the conduit into the conduit at one or more positions downstream of the flow restrictor; and an air inlet channel closing device, the air inlet channel closing device being operable between a first state and a second state, in the first state, one or more of the air inlet channels are opened, and in the second state, one or more of the air inlet channels are closed; wherein: when the air inlet channel closing device is in the first state, the pressure drop of the fluid flow downstream of the flow restrictor causes one or more flows of air to be sucked in along the open air inlet channels, wherein the one or more flows of air are mixed with the fluid flow in the conduit to form an aerated fluid flow; and when the air inlet channel closing device is in the second state, no flow of air is transported from the outside of the conduit into the conduit along the closed air inlet channels.

[0242] The air intake passage closing device may be operable to translate relative to the conduit. For example, the air intake passage closing device may be operable to translate relative to the conduit in a direction parallel to the longitudinal axis of the conduit.

[0243] In one implementation, the air intake passage closing device may include a sleeve.

[0244] The air inlet passage closing device may further include a handle device to facilitate manual actuation between the first state and the second state.

[0245] The gripping means may comprise a ridge. The ridge may at least partially have a crescent or arc shape.

[0246] The catheter assembly may be comprised of two parts, such as a first part and a second part, which are configured to be selectively coupled to one another.

[0247] Either or both of the first part and the second part may be substantially tubular.

[0248] An end of the first part proximate the second part may form a reduced radius portion having a smaller outer radius than the remainder of the first part.

[0249] An end of the second part proximate to the first part may form an increased radius portion having an inner radius greater than a remaining portion of the second part.

[0250] One or more threaded portions may be provided on the outer surface of the reduced radius portion and / or the inner surface of the increased radius portion.

[0251] The first part may be configured to at least partially fit within the second part to selectively couple the first and second parts of the catheter.

[0252] The flow restrictor may form one end of the hollow insert.

[0253] The catheter assembly may be configured such that the hollow insert is located within the first part. For example, the hollow insert may be located within the reduced radius portion.

[0254] The hollow insert may include a rim projecting radially away from the flow restrictor.

[0255] The catheter assembly may be configured such that the edge is clamped between the first part and the second part.

[0256] The one or more air introduction passages may include a first set of air introduction passages perforating a first section of the conduit.

[0257] The one or more air introduction channels may include a second set of air introduction passages perforating the hollow insert.

[0258] Each of the second set of air intake passages may be arranged to receive air from a corresponding one of the first set of air intake passages and provide air to an interior of the hollow insert.

[0259] Each of the first group of air introduction passages and the second group of air introduction passages may include one or more air introduction passages. For example, the first group of air introduction passages may include greater than or equal to 2, greater than or equal to 4, greater than or equal to 8, greater than or equal to 10, or greater than or equal to 16 air introduction passages and / or less than or equal to 32, less than or equal to 18, less than or equal to 16, less than or equal to 10, or less than or equal to 8 air introduction passages. The second group of air introduction passages may include greater than or equal to 2, greater than or equal to 4, greater than or equal to 8, greater than or equal to 10, or greater than or equal to 16 air introduction passages and / or less than or equal to 32, less than or equal to 18, less than or equal to 16, less than or equal to 10, or less than or equal to 8 air introduction passages.

[0260] The first set of air intake passages may be regularly distributed around the circumference of the first part (optionally, the reduced radius portion). The second set of air intake passages may be regularly distributed around the circumference of the second part (optionally, the increased radius portion). In other exemplary embodiments, irregular distribution of air intake passages may be used.

[0261] The conduit assembly may be configured such that air may enter the hollow insert immediately downstream of the flow restrictor.Alternative locations may be employed in some exemplary embodiments.

[0262] The duct assembly may be configured such that when the air introduction passage closing device is in the first state, a gap exists between a front end of the air introduction passage closing device near the second part and the second part, thereby opening the air introduction passage.

[0263] The duct assembly may be configured such that when the air intake passage closing device is in the second state, the front end of the air intake passage closing device contacts the second part, thereby sealing the front end of the air intake passage closing device to the second part.

[0264] Two sealing members may be provided on the outer surface of the reduced radius portion on either side of the first set of air intake passages. The first of the two sealing members (the one away from the second part) may act to prevent air from entering the duct via the gap between the rear end of the air intake passage closing device and the first part.

[0265] The inner radius of the air introduction passage closing device may increase toward the front end of the air introduction passage closing device. When the air introduction passage closing device is in the first state, a gap may exist between the second of the two sealing members and the air introduction passage closing device.

[0266] When the air introduction passage closing device is in the second state, each of the two sealing members may inhibit or prevent a fluid (eg, air or water) from flowing between the reduced radius portion and the air introduction passage closing device.

[0267] When the air intake passage closing device is in the second state, the second sealing member may function as a secondary seal to prevent air from entering the conduit between the front end of the air intake passage closing device and the second part.

[0268] The conduit assembly may be integrated into a support conduit configured to secure the fluid delivery device relative to a shower enclosure in which the fluid delivery device is mounted.

[0269] The conduit assembly may be configured to be integrated into a showerhead of a fluid delivery device.

[0270] The flow restrictor may comprise a section of conduit wherein the cross-sectional area gradually narrows in the direction of fluid flow.

[0271] The conduit may be perforated by one or more air introduction channels for conveying an air flow from outside the conduit into the conduit.

[0272] The air intake passage closing device may include a movable plate. The movable plate may be operable to actuate the transport of air along one or more air intake passages.

[0273] The movable plate may form a rear exterior surface of the showerhead.

[0274] The movable plate can be operated to move relative to one or more air introduction channels. For example, the movable plate can be operated to rotate around the axis of the fluid delivery device. The axis can pass through the center of the spray face of the shower head and be substantially vertically aligned therewith.

[0275] When the air intake channel closing device is in the first state, the movable plate may be arranged so that one or more through-thickness holes are at least partially aligned with one or more air intake channels, thereby enabling airflow to enter the one or more air intake channels. Thus, in this state, the air intake channels may be open.

[0276] When the air intake passage closing device is in the second state, one or more through-thickness holes may be completely misaligned with one or more air intake passages, thereby preventing airflow from entering one or more air intake passages. Therefore, in this state, one or more air intake passages may be closed.

[0277] The movable plate may include a handle to enable a user to actuate the movable plate between the first state and the second state.

[0278] The fluid delivery device of the first aspect may include the catheter assembly of the second aspect.

[0279] The fluid delivery device may include or consist essentially of a handheld showerhead or a fixed overhead showerhead.

[0280] The fluid delivery device may include a shower head for showering.

[0281] The conduit assembly may be integrated into a support conduit that secures the fluid delivery device relative to a shower enclosure in which the fluid delivery device is installed.

[0282] The flow restrictor may comprise a section of conduit wherein the cross-sectional area gradually narrows in the direction of fluid flow.

[0283] The conduit may be perforated by one or more air introduction channels for conveying an air flow from outside the conduit into the conduit.

[0284] The air intake passage closing device may include a movable plate. The movable plate may be operable to actuate the transport of air along one or more air intake passages.

[0285] The movable plate may form a rear exterior surface of the showerhead.

[0286] The movable plate can be operated to move relative to one or more air introduction channels. For example, the movable plate can be operated to rotate around the axis of the fluid delivery device. The axis can pass through the center of the spray face of the shower head and be substantially vertically aligned therewith.

[0287] When the air intake channel closing device is in the first state, the movable plate may be arranged so that one or more through-thickness holes are at least partially aligned with one or more air intake channels, thereby enabling airflow to enter the one or more air intake channels. Thus, in this state, the air intake channels may be open.

[0288] When the air intake passage closing device is in the second state, one or more through-thickness holes may be completely misaligned with one or more air intake passages, thereby preventing airflow from entering one or more air intake passages. Therefore, in this state, one or more air intake passages may be closed.

[0289] The movable plate may include a handle to enable a user to actuate the movable plate between the first state and the second state.

[0290] A third aspect provides a pipeline system, comprising: the fluid delivery device according to the first aspect; and a fluid supply pipeline configured to fluidically connect the fluid delivery device to a fluid source.

[0291] The fluid source may include a mixing valve or a tankless water heater.

[0292] The plumbing system may be a bathing system, such as a shower system or a tap system.

[0293] The bathing system may be at least partially disposed within a shower and / or bathtub cubicle.

[0294] The skilled person will appreciate that, except where mutually exclusive, the features or parameters described in any one of the above aspects may be applied to any other aspect. In addition, except where mutually exclusive, any features or parameters described herein may be applied to any aspect described herein and / or combined with any other features or parameters.

[0295] The present disclosure should be understood that any separable features or elements of the disclosed invention, in any of its various exemplary configurations, are intended to be combinable, unless the context clearly dictates otherwise.

[0296] It is obvious to those skilled in the art that the fluid delivery device according to the present disclosure can have any arrangement of outlets distributed on at least a portion of a shower plate of any size and / or shape. For example, the outlets can include one or more selections of outlets arranged so as to form an arc, a ring, a stripe, a zigzag, or any other shape.

[0297] Throughout this disclosure, the term "turbine" is used to refer to a rotatable element having blades through which a fluid flows to cause the turbine to rotate.

[0298] It is to be understood that the present invention is not limited to the above-described embodiments. Various modifications and improvements may be made without departing from the concepts disclosed herein. Except where mutually exclusive, any feature may be used alone or in combination with any other feature, and the disclosure of the present invention extends to all combinations and sub-combinations of one or more features disclosed herein.

Claims

1. A fluid delivery device, comprising: an inlet for receiving fluid from a fluid supply conduit; a plurality of outlets in fluid communication with the inlet; two or more chambers, the two or more chambers comprising a first chamber and a second chamber, the first chamber supplying fluid to a first selection of the plurality of outlets and the second chamber supplying fluid to a second selection of the plurality of outlets; as well as a switching device disposed between the inlet and the two or more chambers, the switching device controlling fluid flow to the plurality of outlets; wherein the switching device has a first operating mode and a second operating mode, in which the first operating mode there is a first fluid flow rate from the inlet to the first chamber, and in which the second operating mode there is a second fluid flow rate from the inlet to the second chamber; wherein, in the first operating mode, a fluid flow rate from the inlet to the second chamber is not equal to the second fluid flow rate; and Wherein, during use of the fluid delivery device, the switching device cycles between the first operating mode and the second operating mode.

2. The fluid delivery device of claim 1, wherein at least one of the first selection of the plurality of outlets and the second selection of the plurality of outlets comprises a plurality of outlets.

3. The fluid delivery device of claim 1, wherein the second fluid flow rate is less than the first fluid flow rate.

4. The fluid delivery device of claim 1, wherein in the second operating mode, a fluid flow rate from the inlet to the first chamber is not equal to the first fluid flow rate.

5. The fluid delivery device according to claim 1, wherein in the first operation mode, any of the following conditions exists: a non-zero fluid flow from the inlet to the second chamber; or There is no fluid flow from the inlet to the second chamber.

6. The fluid delivery device of claim 1, wherein in the second operating mode, there is non-zero fluid flow from the inlet to the first chamber.

7. The fluid delivery device of claim 1, wherein in the second operating mode, there is no fluid flow from the inlet to the first chamber.

8. The fluid delivery device of claim 1, wherein the first selection of the plurality of outlets or the second selection of the plurality of outlets consists of a single outlet.

9. The fluid delivery device of claim 1, wherein at least one of the plurality of outlets is common to the first selection of the plurality of outlets and the second selection of the plurality of outlets.

10. The fluid delivery device of claim 1, wherein the switching device and / or any part thereof does not move relative to the rest of the fluid delivery device by translation or rotation or otherwise during cycling between the first operating mode and the second operating mode.

11. The fluid delivery device of claim 1 , further comprising two or more channels, each channel fluidically connecting the switching device to a respective one of the two or more chambers, wherein the two or more channels comprise: a first passage, the first passage being located between the switching device and the first chamber; A second passage is located between the switching device and the second chamber.

12. The fluid delivery device of claim 11, comprising an actuator assembly capable of adjusting the position of the switching device relative to the inlets of the two or more channels. 13 . The fluid delivery device of claim 11 , wherein the switching device comprises a front chamber that is fluidly connected to the first chamber through the first passage and is fluidly connected to the second chamber through the second passage.

14. A fluid delivery device according to claim 13, wherein the switching device includes a first feedback loop and a second feedback loop, wherein the first feedback loop provides a path for the fluid flow from the first channel to the front chamber, and the second feedback loop provides a path for the fluid flow from the second channel to the front chamber.

15. A fluid delivery device according to claim 14, wherein fluid flow from the first feedback loop interferes with fluid flow to the first channel, thereby switching the switching device from its first operating mode to its second operating mode; and wherein, Fluid flow from the second feedback loop disrupts fluid flow to the second passage, thereby switching the switching device from its second mode of operation to its first mode of operation.

16. The fluid delivery device according to claim 1 further includes a movable element, which selectively at least partially blocks the fluid flow from the inlet to the first chamber and from the inlet to the second chamber in a circulating fluid flow, so that in use, the switching device cycles between the first operating mode and the second operating mode.

17. The fluid delivery device of claim 16, wherein: Movement of the movable element is driven solely by fluid flow from the inlet; or The movable element is energized.

18. The fluid delivery device of claim 14, wherein: In at least one operating mode, the switching device is fluidly connected to the first chamber via a first passage; In at least one operating mode, the switching device is fluidly coupled to the second chamber via a second passage; In the first operating mode, the switching device partially or completely closes an opening to the first passage; And in the second operating mode, the switching device partially or completely closes the opening to the second channel.

19. The fluid delivery device of claim 1, further comprising one or more other selections of said plurality of outlets, wherein: the one or more other selected fluid supplies to the plurality of outlets bypassing the switching device; and / or The fluid delivery device comprises one or more other chambers, wherein each of the one or more other chambers provides fluid flow from the switching device to one of the one or more other selections of the plurality of outlets.

20. The fluid delivery device of claim 1, further comprising three or more chambers, wherein the switching device has three or more operating modes, and wherein during use of the fluid delivery device, the switching device cycles between each of the three or more operating modes.

21. The fluid delivery device of claim 19, wherein each of the three or more operating modes is associated with a corresponding one of the three or more chambers; wherein there is a given fluid flow rate from the inlet to a chamber of the three or more chambers associated with a given operating mode; as well as For each of the remaining ones of the three or more chambers, there is an alternative fluid flow rate from the inlet to that one of the remaining chambers.

22. The fluid delivery device of claim 1, further comprising a catheter assembly, the catheter assembly comprising: catheter; a flow restrictor which restricts the flow of a fluid stream along the conduit so as to produce, in use, a pressure drop in the fluid stream downstream of the flow restrictor; one or more air intake passages for conveying a flow of air from an exterior of the conduit into the conduit at one or more locations downstream of the flow restrictor; as well as an air intake passage closing device operable between a first state in which one or more of the air intake passages are open and a second state in which one or more of the air intake passages are closed; in: When the air intake passage closing device is in the first state, a pressure drop in the fluid flow downstream of the flow restrictor causes one or more streams of air to be drawn along the open air intake passage, wherein the one or more streams of air mix with the fluid flow in the conduit to form an aerated fluid flow; as well as When the air introduction passage closing device is in the second state, no flow of air is transported into the duct from the outside of the duct along the closed air introduction passage.

23. The fluid delivery device of claim 22, wherein the air intake passage closing device translates relative to the conduit.

24. A piping system comprising: Entrance; a plurality of outlets in fluid communication with the inlet; a first chamber in fluid communication with a first selection of the plurality of outlets and a second chamber in fluid communication with a second selection of the plurality of outlets; as well as a switching device located between the inlet and the two or more chambers, the switching device controlling fluid flow to the plurality of outlets; wherein the switching device has a first operating mode and a second operating mode, in which the first operating mode there is a first fluid flow rate from the inlet to the first chamber, and in which the second operating mode there is a second fluid flow rate from the inlet to the second chamber, wherein in the first operating mode the fluid flow rate from the inlet to the second chamber is not equal to the second fluid flow rate; and wherein the switching device cycles between the first mode of operation and the second mode of operation; and A fluid supply conduit is configured to fluidly connect the inlet to a fluid source.

25. The plumbing system of claim 24, wherein the fluid source comprises a mixing valve or a tankless water heater.

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