CN107438455B

CN107438455B - Fluid dispensing apparatus

Info

Publication number: CN107438455B
Application number: CN201580076818.4A
Authority: CN
Inventors: W·R·A·布朗; P·库莫尔
Original assignee: Angloco Ltd
Current assignee: Angloco Ltd
Priority date: 2014-12-24
Filing date: 2015-12-22
Publication date: 2020-11-20
Anticipated expiration: 2035-12-22
Also published as: PL3237079T3; EP3237079A1; ES2791151T3; EP3237079B1; AU2015370671B2; WO2016102957A1; CN107438455A; AU2015370671A1

Abstract

The present invention relates to an apparatus and method for dispensing a fluid. In particular, but not exclusively, the apparatus is configured to provide a plurality of alternative dispensing modes, for example, a dual mode comprising dispensing a jet or stream of fluid (e.g. water) and a mist of the fluid simultaneously. Certain embodiments of the present invention relate to a hand-held spray gun and a fixed, e.g., vehicle-mounted, nozzle for extinguishing fires. The present invention also includes methods of dispensing fluids (e.g., water), including methods of dispensing fluids, such as in a fire fighting situation.

Description

Fluid dispensing apparatus

Technical Field

The present invention relates to an apparatus and method for dispensing a fluid. In particular, but not exclusively, the device is configured to provide a plurality of selectable dispensing modes, including for example a dual mode which dispenses both a jet (jet) or stream (stream) of fluid (e.g. water) and a mist (mist) of fluid (mist). Certain embodiments of the present invention relate to a hand-held spray gun (branch) and a fixed, e.g., vehicle-mounted, nozzle for extinguishing fires. The present invention also includes methods of dispensing fluids (e.g., water), including methods of dispensing fluids, such as in a fire fighting situation.

Background

To extinguish a fire, a hand-held or mounted device, such as a nozzle or lance, is typically connected to a fluid source (e.g., a water source, etc.) and is used to direct fluid discharged from the source. The device is typically provided with an on/off mechanism for controlling the discharge of fluid from the nozzle or lance.

Generally, fire fighting nozzles or lances may be used to dispense a jet of fluid. These spray guns typically produce relatively large droplets in an annular O-shaped spray. The fluid distribution pattern (pattern) can be varied between a wide spray pattern and a concentrated jet pattern.

Generally, known spray guns produce only a water mist. The water mist can be produced in several ways. One such technique is to use a high or ultra-high pressure fluid source to force a fluid (e.g., water) through a small orifice to atomize the spray. Other methods involve the use of pairs of interfering jets to generate the water mist.

Water mist is considered to be a more effective fire extinguishing medium than the larger droplets of the spray stream dispensed by conventional spray guns because the larger surface area to volume ratio of the smaller water mist particles causes the water mist to absorb more energy from the fire. More water becomes steam and less water is needed to produce the same effect on a fire. As a result, the size and flow rate of the lance or nozzle may be reduced accordingly.

The prior art systems that generate only water mist have several disadvantages associated with their use. Where very small orifices are used, they may be susceptible to clogging. Furthermore, water mist projection (i.e., the distance over which the water mist is propelled to be able to suppress the flame) is limited compared to projection of larger droplets dispensed in a jet or spray pattern, and so firefighters carrying hand-held devices must be closer to the flame to direct water to the flame, or stationary systems, such as vehicle-mounted systems, may be limited in their reach. Both of these situations can be dangerous and life threatening. Thus, in some cases, firefighters are reluctant to use a lance mechanism that produces a water mist, despite the potentially higher fire fighting efficiency compared to a jet or spray lance mechanism.

It is an object of the present invention to at least partially alleviate the above problems.

Certain embodiments of the present invention aim to provide an apparatus configured to dispense a fluid water mist such that it enables improved projection of the fluid water mist.

Certain embodiments of the present invention are directed to an apparatus configured to be switchable between a plurality of allocation modes when desired by a user.

Certain embodiments of the present invention are directed to a multi-mode handheld or fixed location fire suppression system having at least three modes of operation that may be effectively operated by a fire fighter, either directly or remotely.

Disclosure of Invention

In a first aspect of the invention there is provided apparatus for dispensing a fluid at a desired location, comprising:

a delivery device, comprising:

a first fluid communication path and an additional fluid communication path;

at least one first fluid outlet port and at least one additional fluid outlet port at least partially surrounding the first fluid outlet port, wherein a first fluid communication path is used to connect each first fluid outlet port to a first fluid source and an additional fluid communication path is used to connect each additional fluid outlet port to an additional fluid source;

a first control member for selectively connecting a first fluid source to the first fluid outlet port; and

an additional control member for selectively connecting an additional fluid source to the additional fluid outlet port.

In certain embodiments, the delivery device is a handheld device.

Suitably, the delivery device is configured to be mounted on a vehicle. Alternatively, the delivery device is configured to be fixedly disposed.

In certain embodiments, the first fluid outlet port and the additional fluid outlet port are configured to discharge a fluid, e.g., water.

Suitably, the apparatus further comprises a first fluid source and an additional fluid source. In an embodiment, the first fluid source and the additional fluid source comprise a common fluid source. In another embodiment, the first fluid source is separate and distinct from the additional fluid source.

In certain embodiments, the first fluid source and the additional fluid source are configured to supply fire suppression liquid to the respective first fluid outlet port and the additional fluid outlet port, respectively. Suitably, the fire suppression liquid is water.

Suitably, the delivery device is operable to dispense fluid in a plurality of dispensing modes. In certain embodiments, the delivery device includes a first actuation member operatively connected to the first control member to selectively connect or disconnect the first fluid source to the first fluid outlet port.

Suitably, the first fluid communication path comprises a first conduit and wherein the first control member comprises a first valve member disposed in the first conduit.

In certain embodiments, the first valve member is movable between an open position and a closed position to selectively connect the first fluid source to the first fluid outlet port.

Suitably, the delivery device comprises a pistol-like body. In certain embodiments, the first actuation member is a trigger-type member, and the first valve member is movable between the open position and the closed position by actuation of the trigger-type member.

In another embodiment, a delivery device includes a generally elongated body. Suitably, the first valve member is movable between the open and closed positions by actuation of a first, non-triggered, actuation member (e.g. a handle member).

Suitably, the device comprises an additional actuating member operatively connected to the additional control member to selectively connect the additional fluid source to the additional fluid outlet port or disconnect the additional fluid source from the first fluid outlet port.

In an embodiment, the additional fluid communication path comprises an additional conduit, and wherein the additional control member comprises an additional valve member disposed in the additional conduit.

Suitably, the additional valve member is movable between an open position and a closed position to selectively connect an additional fluid source to the additional fluid outlet port. In certain embodiments, the additional valve member comprises a first portion comprising the first through-hole and an additional portion comprising the additional through-hole. In some embodiments, the additional valve member is rotatable between an open position in which the first through hole and the additional through hole are each axially aligned with a respective longitudinal axis of the annular portion of the additional conduit, and a closed position in which the first through hole and the additional through hole are disposed substantially perpendicular to the respective longitudinal axis of the annular portion of the additional conduit.

In some embodiments, the additional valve member includes a central portion having a smaller diameter than the first portion and the additional portion. Suitably, the central portion connects the first and second portions. Suitably, the narrow central portion is located in the first conduit. Suitably, the narrow portion is configured to allow fluid to be dispensed through the first conduit when the additional valve member is in the open position or the closed position relative to the additional conduit.

In certain embodiments, the first valve member includes a central portion including a first central throughbore, wherein the central portion is positionable in the first conduit. In some embodiments, the first valve member is rotatable between an open position in which the first central throughbore is axially aligned with the longitudinal axis of the first conduit and a closed position in which the first central throughbore is disposed substantially perpendicular to the longitudinal axis of the first conduit.

In some embodiments, the first valve member includes a first narrow portion and an additional narrow portion, the first narrow portion and the additional narrow portion being connected by a central portion. Suitably, the first narrow portion and the additional narrow portion have a diameter smaller than the diameter of the central portion. Suitably, the first narrow portion and the additional narrow portion are positioned in respective annular portions of the additional conduit.

Suitably, the narrow portion is configured to allow fluid to be dispensed through the annular portion of the additional conduit when the first valve member is in the open position or the closed position relative to the first conduit.

Suitably, the delivery device comprises a body and the additional actuation member is a handle member. In certain embodiments, the handle member may be actuatable to selectively move the valve member between the open position and the closed position. In one embodiment, the body is a pistol-like body.

Suitably, the handle member is pivotally connected to the further valve element, and rotation of the handle member about the pivot axis selectively connects the further fluid source to the further fluid outlet port.

In certain embodiments, the delivery device comprises a body portion, and wherein the additional control member comprises a rotatable sleeve member mounted on the body portion.

Suitably, the first conduit and the additional conduit are arranged coaxially. Suitably, the first conduit and the additional conduit are provided in a substantially parallel arrangement. In an embodiment, the first conduit and/or the additional conduit is provided with at least one bend.

In an embodiment, the additional fluid outlet port is annular and entirely surrounds the first fluid outlet port. Suitably, the first fluid outlet port is configured to dispense fluid in the first dispensing mode, and wherein the additional fluid outlet port is configured to dispense fluid in the additional dispensing mode.

In one embodiment, the first dispensing mode provides a mist pattern. In one embodiment, the first dispensing mode provides a spray pattern. In one embodiment, the first dispensing mode provides a jet pattern. In an alternative embodiment, the first dispensing mode provides a mist or spray pattern and the additional dispensing mode provides a mist pattern. Suitably, the external mist pattern may provide a protective barrier between the fire and a user of the apparatus.

Suitably, the water mist form comprises fluid droplets having an average diameter of less than about 100 microns, such as less than 65 microns, for example less than 45 microns. Suitably, the droplets in the form of a water mist have an average diameter of less than about 1 micron.

Suitably, the device is configured to selectively dispense fluid in the first dispensing mode and/or the additional dispensing mode. In an embodiment, the device is configured to dispense fluid simultaneously in the first dispensing mode and the additional dispensing mode.

Suitably, the first distribution pattern comprises a mist pattern entrained by a spray pattern of the additional distribution pattern.

In an embodiment, the device comprises a body portion housing at least a portion of the first fluid communication path and at least a portion of the additional fluid communication path.

Suitably, the device further comprises a gripping member extending from the body portion. In one embodiment, the handle member extends from the body portion.

Suitably, the device further comprises a form sleeve rotatably coupled to the body portion, and wherein the first dispensing mode may comprise a plurality of forms, the fluid form being generated by the rotational position of the form sleeve relative to the body.

In an embodiment, the additional control member comprises a control sleeve rotatably coupled to the body portion. Suitably, the control sleeve and the form sleeve are the same.

Suitably, the device further comprises a flow control element.

In certain embodiments, the device further comprises at least one filter element. Suitably, the filter element prevents clogging of the one or more apertures of the first fluid outlet port. Suitably, the device further comprises a filter element positioned in an inlet region of the first fluid communication path. In certain embodiments, the filter element comprises a mesh comprising a plurality of apertures, each aperture having a diameter that is less than a diameter of one or more apertures provided by the first fluid outlet port. Suitably, the filter element acts to prevent material that may block the aperture of the first fluid outlet port from entering the first fluid outlet port. Suitably, the filter element may be arranged to flush captured material by fluid flow in a second fluid communication path adjacent thereto.

Thus, certain embodiments provide a method of removing material (e.g., particulate debris) from one or both fluid communication paths that may otherwise block the path from fluid (e.g., water) exiting the device. Thus, certain embodiments may provide a device that is low in failure in potentially dangerous fire conditions.

In certain embodiments, the additional fluid outlet port is a second fluid outlet port, and wherein the device comprises a third fluid outlet port at least partially surrounding the second fluid outlet port.

In certain embodiments, the additional fluid communication path is a second fluid communication path and the additional fluid source is a third fluid source, and wherein the device further comprises a third fluid communication path for connecting the third fluid communication path to the third fluid source. The third fluid source may be separate from the first and second fluid sources, or may be a common fluid source.

In certain embodiments, the additional dispensing mode is a second dispensing mode and the third fluid outlet port is configured to provide a third dispensing mode. Suitably, the third distribution mode provides a profile selected from a mist profile, a spray profile or a jet profile.

Suitably, the device is a fire gun or fire monitor. Suitably, the device is for dispensing one or more fire suppression liquids. Suitably, the fire suppression liquid is water.

In another aspect of the invention, a method of extinguishing a fire is provided, comprising the steps of:

selectively dispensing fluid from the delivery device at a desired location in the fire by selecting one of at least three possible dispensing modes, comprising:

delivering a fluid water mist solely through at least one central fluid outlet port of the delivery device;

delivering fluid individually in a jet or spray through at least one annular fluid outlet port, wherein at least one annular fluid outlet port at least partially surrounds the central fluid outlet port; and

simultaneously delivering a fluid mist through the central fluid outlet port and a fluid jet or fluid spray through the annular fluid outlet port.

Suitably, the method further comprises:

the selected one of the modes of operation is selected by selectively actuating one or both of the first control member and the additional control member of the delivery device. Suitably, the spray is a frusto-conical (frusto-conical) spray.

Suitably, the fluid delivered through the at least one annular fluid outlet port is adjustable between a jet and a spray. Suitably, the jet is a dense stream of fluid. Suitably, the fluid is water.

Suitably, the delivery device is a delivery device as described herein. Suitably, the central fluid outlet port is a first fluid outlet port as described herein. Suitably, the annular fluid outlet port is an additional fluid outlet port as described herein.

Certain embodiments of the present invention provide an apparatus, such as a spray gun having only two manually selectable actuators, that can provide a spray or jet pattern alone or a mist pattern alone, or both, wherein the mist pattern is entrained by the surrounding spray or jet pattern to enhance the projection and effect of the mist.

Certain embodiments of the present invention provide an apparatus, such as a lance or a lance tower, mounted on a vehicle or deployed from the ground.

In certain embodiments, the device is configured to provide a single mode of fluid dispensing. For example, a user may wish to dispense fluid in a mist mode only or a jet mode only. Thus, the devices of certain embodiments described herein provide the advantage that a single device can be used to dispense fluids in multiple dispensing configurations. For example, the same device may be used to dispense fluids in different modes when conditions change. For example, in a fire rescue situation, water mist may be suitable at the beginning, but environmental conditions may change, e.g. wind speed may be increased, which will make the water mist less effective and thus it becomes more suitable to perform the jet mode. A user may operate the control member of the device of some embodiments to switch from one dispensing mode to another without having to replace a different device or replace the fluid source.

In another aspect of the present invention, there is provided an apparatus for delivering a fluid or powder at a desired location, comprising:

a fluid delivery device comprising at least a first fluid outlet port and at least an additional fluid outlet port;

a first fluid delivery conduit provided with a central bore for delivering a first fluid from a first fluid source to a first fluid outlet port; and

an additional fluid delivery conduit disposed coaxially with the first fluid delivery conduit for at least a portion of the length of the first fluid delivery conduit, an annular channel being defined between the first fluid delivery conduit and the additional fluid delivery conduit for communicating an additional fluid to an additional fluid outlet port.

Suitably, the fluid is a gas.

Suitably, the apparatus comprises a hose connectable to the fluid transfer device, the hose comprising a first hose conduit and an additional hose conduit, each hose having a substantially cylindrical shape when fluid is communicated along the length of the hose. In an embodiment, the first fluid transfer conduit is integrally formed with the hose conduit.

In an embodiment, the additional fluid conveying conduit is integrally formed with the additional hose conduit, wherein the first hose conduit is disposed within the additional hose conduit. Thus, in certain embodiments, the first fluid source and the additional fluid source are coaxially arranged.

Suitably, the first hose conduit and the additional hose conduit are flexible and collapsible, respectively.

Suitably, the first hose conduit and the additional hose conduit are made of reinforced rubber or reinforced plastic material. Suitably, the hose comprises an outer layer of metal, for example steel or aluminium.

In certain embodiments, the apparatus comprises:

at least one delivery device connecting member at the connecting end of the fluid delivery device; and

at least one hose connector member at an end of the hose for connecting the hose to a delivery device; wherein

The first hose passage and the additional hose passage may be positioned in fluid communication with a respective one of the central bore and the annular passage of the fluid transfer device when the hose is connected to the transfer device.

Certain embodiments of the present invention provide an apparatus capable of delivering one or more (e.g., two) fluids to a target location. The first fluid may be dispensed via a first fluid outlet port, and the additional fluid may be dispensed via an additional fluid outlet port. The fluids may be different or the same. The first and second fluids may be dispensed substantially simultaneously or may be dispensed sequentially.

Certain embodiments of the present invention provide an apparatus for dispensing at least two fire suppression liquids to a desired location. In one embodiment, the first fluid or the additional fluid is water. Suitably, the water comprises one or more additives. Exemplary additives include, for example, surfactants, gelling agents, foaming agents, and/or abrasive materials.

In one embodiment, the fluid may be a gas, for example, carbon dioxide. Suitably, the gas is air. In one embodiment, the apparatus is used to deliver powder to a desired location.

Certain embodiments of the present invention provide a multi-mode fluid distribution system for completely or at least partially extinguishing a fire at a desired location. Certain embodiments of the present invention may provide a handheld fluid delivery device (e.g., spray gun) that may provide any of at least three distinct and distinct modes of operation through a convenient-to-use selection system. Suitably, the delivery device is pistol-shaped.

The coaxial arrangement of the apparatus of certain embodiments enables the use of a single hose or other fluid source to dispense two or more fluids from the device. Thus, the use of two or more hoses, which may be heavy and heavy for a user to handle and transport, may be avoided. This is particularly important in potentially dangerous situations, for example, where fire fighters must be able to move quickly to cope with environmental changes and changes in the fire they are trying to extinguish. Suitably, the fluid is water.

In another aspect of the invention, a vehicle is provided comprising an apparatus as described herein. Suitably, the vehicle is a fire truck or a fire truck. Suitably, the vehicle is a marine vehicle, for example a boat.

Certain embodiments of the invention are described further below.

Drawings

Embodiments of the invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 illustrates a portion of an apparatus according to some embodiments of the invention;

figure 2 illustrates an outlet region of the apparatus in a first dispensing mode according to certain embodiments of the present invention;

figure 3 shows the outlet area of the device in another dispensing mode according to certain embodiments of the present invention;

figure 4 shows the outlet area of the device in a further dispensing mode according to some embodiments of the present invention;

FIG. 5 illustrates a schematic diagram of an apparatus according to some embodiments of the invention;

FIG. 6 is a schematic view of a portion of an apparatus in a first dispensing mode according to certain embodiments of the present invention;

FIG. 7 is a schematic view of a portion of an apparatus in another dispensing mode according to certain embodiments of the present invention;

FIG. 8 is a schematic view of a portion of an apparatus in yet another dispensing mode according to certain embodiments of the present invention;

FIG. 9 illustrates one of certain embodiments of the invention;

FIG. 10 illustrates a coaxial arrangement of certain aspects of the present invention;

FIG. 11 illustrates a coaxial catheter according to some embodiments of the invention;

FIG. 12A illustrates an apparatus according to some embodiments of the inventions;

FIG. 12B shows a cross-sectional view of the device shown in FIG. 12A;

FIG. 13A shows the device of FIG. 12A in another dispensing mode;

FIG. 13B shows a cross-sectional view of the device in the dispensing mode shown in FIG. 13A;

FIG. 14A shows the device in another dispensing mode;

FIG. 14B shows a cross-sectional view of the device in the dispensing mode shown in FIG. 14A;

FIG. 15A shows the device in another dispensing mode;

FIG. 15B shows a cross-sectional view of the device in the dispensing mode shown;

FIG. 16 illustrates a control element in a closed position according to some embodiments of the invention;

FIG. 17 illustrates a control element in an open position according to certain embodiments of the present invention;

FIG. 18A schematically illustrates an apparatus according to some embodiments of the inventions;

FIG. 18B is a cross-sectional view of the device shown in FIG. 18A;

FIG. 19A schematically illustrates an apparatus in another dispensing mode, in accordance with certain embodiments of the present invention;

FIG. 19B is a cross-sectional view of the device shown in FIG. 19A;

FIG. 20A schematically illustrates an apparatus in another dispensing mode, in accordance with certain embodiments of the present invention;

FIG. 20B is a cross-sectional view of the device shown in FIG. 20A;

FIG. 21A schematically illustrates an apparatus in another dispensing mode, in accordance with certain embodiments of the present invention;

FIG. 21B is a cross-sectional view of the device shown in FIG. 21A; and

FIG. 22 illustrates a flow control element according to some embodiments of the inventions.

Detailed Description

Certain embodiments of the present invention relate to an apparatus for dispensing a fluid. In certain embodiments, the apparatus is used to dispense fire suppression fluid. Suitably, the fire suppression liquid is water. Alternatively, or in addition, the fluid source may be a combined source of foaming agent and water. Thus, in some embodiments, the apparatus is for dispensing an aqueous foam mixture. Fire fighting foam agents are well known in the art and may be, for example, protein-based agents or foam sprays. Alternatively, the device may be used to dispense a water additive composition.

Suitably, the apparatus comprises a device as described herein. The device may be a hand-held device, such as a spray gun or nozzle. In certain embodiments, the delivery device is a spray gun, spray tower, spray gun, or spray nozzle. In certain embodiments, the device is a spray gun. The term "lance" is common general knowledge in the art.

In certain embodiments, the device is a mounted or fixed structural device, such as a spray tower or spray gun. The device can be positioned on a surface and operated automatically without the need for a firefighter. The device may be mounted to and operated by, for example, a vehicle or a boat. In use, the apparatus further comprises a fluid source connected to the device. For example, the fluid source may be a water source.

Suitably, the device may be actuated using a variety of different actuation methods including manual, electrical, hydraulic or radio frequency control, etc.

In certain embodiments, the fluid is dispensed through a dispensing modality. Suitably, the terms "dispensing configuration" and "configuration" as used herein are used to describe the configuration resulting from dispensing a fluid in progress.

In certain embodiments, for example, the dispensing configuration may be a jet configuration. A jet pattern is formed when a relatively large droplet or dense stream of fluid is dispensed from the device in a restricted manner. The droplets dispensed by the jet formation can have an average diameter greater than about 100 microns, for example, about 150 microns, 200 microns, 300 microns, 400 microns or more, or be a dense stream.

The term "average diameter" as used herein refers to an average diameter of at least about 90% of the droplets dispensed in a particular dispensing pattern.

A spray pattern is formed when relatively large droplets of fluid are dispensed from the device in a restricted manner. The droplets dispensed by the spray pattern can have an average diameter greater than about 100 microns, for example, about 150 microns, 200 microns, 300 microns, 400 microns, or more.

When small fluid droplets are dispensed from the device, a mist pattern is formed. The term "small" is relative to the size of the droplets produced in the jet or spray pattern. Further, the size of the fluid droplets dispensed by the water mist form may be determined, as appropriate, according to the type of apparatus. For example, the handheld device may be configured to dispense mist droplets, wherein the mist droplets have an average diameter of less than about 100 microns, e.g., 90 microns, 80 microns, 70 microns, or 60 microns. In one embodiment, the mist droplets have an average diameter of between less than about 1 micron and about 60 microns.

The average diameter of the mist droplets dispensed by a device larger than a hand-held spray gun, such as a gun or tower, may be larger. For example, in certain embodiments, the mist droplets have an average diameter of greater than about 100 microns and less than about 1000 microns.

In certain embodiments, the apparatus is configured to dispense fluid in a mist form and a spray form simultaneously. Suitably, the dispensing of the mist of fluid is from a first outlet port provided in the annular additional outlet port. Suitably, the spray or jet distribution is from an annular additional outlet port which surrounds the outlet periphery provided at the first outlet port. Thus, when the mist and the spray or jet are dispensed simultaneously, the spray or jet acts to entrain the mist, which increases the distance the mist can travel. Thus, certain embodiments of the present invention may allow a user, i.e., a firefighter, to be located farther from the flame than what is allowed by prior art spray guns that generate only water mist.

The water source may deliver water to the device at a pressure of about 2 bar to 1000 bar or more. In certain embodiments, for example, when the apparatus is used to dispense fluid in only a fog mode, the fluid source may provide fluid by high or ultra high pressure. Suitably, the high pressure may be considered to be about 20-50 bar. Suitably, the very high pressure is about 50-100 bar and the ultra high pressure may be greater than 100 bar.

In one embodiment, the device is adapted to receive a fluid, such as water, at two or more different pressures. Suitably, the water source delivers water at two or more pressures. In certain embodiments, the water source is a plurality of water sources.

Referring to the embodiment shown in the drawings, there is shown in figure 5a spray gun apparatus 1. The device 1 comprises a body portion 3 comprising an outlet area 5. The device further comprises an inlet region 7 connecting the device to a fluid source (not shown).

The device may be configured to connect one or more fluid sources at its inlet region. In certain embodiments, the device may be connected to two fluid sources simultaneously, for example, a high or ultra-high pressure fluid source and a low pressure source. As described further below, the connection may be a coaxial connection.

The device further comprises a gripping member 9 for the user to grip the device. The gripping member extends downwardly from the main body portion 3. The gripping member may be a gun grip, as shown in fig. 5. Certain embodiments of the present invention contemplate and incorporate other types of grips or handles.

The device further comprises a handle member 11. The handle member 11 extends generally upwardly from the body portion. The handle member may be pivotally mounted on an outer surface of the body portion and may be rotated by a user. In certain embodiments, the handle member is a bale arm (ball arm) control member. The handle member may be used to selectively control the flow of fluid from the fluid source to the outlet region. More details of the control member will be described below.

The device may also include additional control elements, such as control member 13. As shown in fig. 5, the control member 13 is a trigger-type control member. The trigger control member is connected to one or more additional control members housed in the main body portion, as described in more detail below.

For example, the outlet region of the device is shown in detail in fig. 1. The outlet region comprises a first fluid outlet port 15 having an outer surface 16. The first fluid outlet port 15 has a circular cross-section and is substantially solid. For example, as shown in fig. 6, the first fluid outlet port is in fluid communication with the first conduit. The first fluid outlet port includes an outer surface 16, the outer surface 16 including a plurality of small orifices 19 for dispensing fluid therefrom. For example, as shown in fig. 1, the orifices may be arranged in pairs. The pair of apertures may provide an interference pattern for fluid discharged from the first fluid outlet port, thereby forming a mist of fluid. Alternatively, the first fluid outlet port may comprise one or more apertures sized to atomize the fluid dispensed therefrom.

In another alternative embodiment (not shown), the first fluid outlet may comprise a central bore instead of having a substantially solid surface as described above. In this embodiment, an atomizing tip element may be fixedly disposed on the outer surface of the first fluid outlet port. The first fluid outlet port may comprise a thread corresponding to a thread provided on the atomizing tip element for detachably securing the atomizing tip element to the first fluid outlet port. Alternatively, the atomizing tip element may be fixed to the first fluid outlet port by a bayonet fitting.

The atomizing tip element may include one or more orifices for dispensing fluid from the first conduit, the orifices being sized and shaped to dispense fluid as a mist.

The outlet region also comprises a second fluid outlet port 21. The second (or additional) fluid outlet port 21 is annular and surrounds the first fluid outlet port, for example as shown in fig. 1 and 5. Thus, the second fluid outlet port has an annular cross-sectional area. The second fluid outlet port is disposed at a periphery of the first fluid outlet port. The second fluid outlet port may be separated from the first fluid outlet port by a solid annular region 23.

The outlet region may also comprise a collar 25. The collar 25 provides the outer longitudinal surface of the outlet area. The collar is rotatable and when rotated causes the sleeve to slide longitudinally downstream from the end of the outlet zone. When fluid is provided to the device, the sleeve is slid to switch the dispensing mode of the second outlet port between the jet and spray modes. In certain embodiments of the present invention, for example, as shown in fig. 9, rotation of the collar may also control fluid flow to the second outlet port, and thus may prevent or force fluid discharge from the second outlet port depending on the direction of rotation. In this embodiment, the collar and sleeve together form an additional or second control member as described herein, the sleeve being rotatable between a "closed" position in which fluid is not dispensed and an "open" position in which fluid is dispensed.

The second outlet port may also comprise an annular structure comprising a plurality of spaced-apart toothed elements 140, as shown, for example, in fig. 9. The annular structure may surround an outer periphery positioned at the first outlet port and extend outwardly from the end surface of the outlet region. The toothed element may be rotated during use to break up droplets of fluid flowing out of the second fluid outlet port. This may reduce the size of the fluid droplets exiting the second fluid outlet and may also cause the fluid to be dispensed at a wider angle of divergence.

The teeth may be angled or angled so that the water applies uneven pressure to rotate the ring-shaped structure. Each tooth-like element is fixed to or is an integral part of an annular structure located in a recessed annular groove region in the end surface of the fluid outlet region.

Alternatively, the ring structure may be fixed and non-rotatable.

The device provides one or more fluid communication paths. Suitably, the device comprises a first conduit 27 having an aperture, as shown in figure 6. Fig. 6-8 illustrate control members and fluid flow controls of various embodiments of the present invention, and are not to scale.

The first conduit 27 has a first end 29 that is proximate to and connectable to a fluid source. The first conduit 27 may include a filter element (not shown) at a first (inlet) end thereof. A first conduit 27 terminates at the other end of the outlet region and is in fluid communication with the first fluid outlet port. A first conduit connects the first fluid outlet port with a fluid source to deliver and dispense fluid to the first fluid outlet port. The embodiment shown in fig. 6 shows a first conduit that includes at least one bend. The first conduit may include a curve or bend therein to accommodate a control member provided in the second conduit as described below. The first conduit may be entirely contained within the body portion, or alternatively, at least a portion of the first conduit may be disposed outside of the body portion.

Suitably, the first conduit comprises one or more control members for selectively controlling the flow of fluid from the fluid source to the first fluid outlet port. As shown in fig. 6, the exemplary control member includes a valve element 33. The valve element 33 may be, for example, a ball valve. Suitably, the valve element 33 is movable between the open and closed positions by operation of the trigger member 13 (shown in figure 5). Thus, when the trigger member is in the first position, the valve is in the first position, e.g., in the open position. When the trigger member is in the second position, i.e. when it is actuated and moved towards (or away from) the grip member, movement of the trigger member moves the valve to the second position, e.g. to the closed position. Further, movement of the trigger member between the first and second positions may be used to control the flow of fluid. When the valve element is in the closed position, fluid is prevented from flowing to the first fluid outlet port and thus fluid is not dispensed.

The valve element 33 may be, for example, a ball valve, as shown in fig. 6. Suitably, the ball valve comprises a spherical portion having a bore 39 extending through a diameter thereof. When the valve is in the open position, the aperture 39 is generally axially aligned with the longitudinal axis of the conduit 27 to allow fluid to pass along the conduit.

For example, by actuating the trigger member to move the valve to the closed position, the ball is rotated so that the aperture is no longer aligned with the longitudinal axis of the catheter. Instead, the holes are generally perpendicular to the longitudinal axis of the conduit, thereby not allowing fluid to flow along the conduit.

Flow may be reduced by the ball valve, but flow is not completely prevented by partial rotation of the ball valve. Suitably, the valve element is formed from any suitable material, for example stainless steel.

It will be appreciated that in alternative arrangements, the valve element 33 is operated by a movement of an alternative control member instead of a trigger, for example a handle member as described herein.

As shown in fig. 6, the device further comprises a second conduit 35 comprising a control element for controlling the flow of fluid in the second conduit. The second conduit may be housed in the body portion of the device. Suitably, the conduit is made of an aluminium alloy, bronze or a composite material.

As shown in fig. 6, the control element includes a second valve element 37. The second valve element may be a ball valve comprising a through hole 41 as described above in relation to the first valve element. Thus, rotation of the ball valve 37 controls the flow of fluid to the second fluid outlet port.

The second control element may also include an element that can be actuated to move the second valve element between the open position and the closed position. In an embodiment, the movement of the second valve element between the open and closed positions is controlled by movement of the handle member 11. In an alternative embodiment, the second valve element may be actuated by an alternative control member, such as the trigger member 13. In this embodiment, the first valve element may be actuated by a control member other than the trigger member.

In fig. 6, the first valve element disposed in the first conduit is in a closed position and the second valve element is in an open position. Thus, fluid is only allowed to flow from the fluid source along the second conduit to the second fluid outlet port. In this embodiment, the device dispenses the fluid by means of a jet or spray pattern. The dispensing configuration resulting from the arrangement of figure 6 is shown in figure 2. The collar may be rotated as required to change the dispensing configuration between the jet and spray configurations.

Fig. 7 illustrates an embodiment in which the first valve element is in an open position, allowing fluid to flow along the first conduit from the fluid source to the first fluid outlet port. The second valve element is in a closed position blocking fluid flow to the second outlet port.

Thus, in the dispensing mode shown in fig. 7, fluid is dispensed only from the first fluid outlet port. The first fluid outlet port is configured to dispense fluid through a mist pattern, so only mist dispensing occurs. The dispensing configuration resulting from this arrangement is shown in figure 3.

Fig. 8 illustrates an embodiment in which both the first and second valve elements are in an open position and thus fluid flows along the first and second conduits to the respective fluid outlet ports. In this embodiment, the apparatus dispenses the fluid simultaneously in two different dispensing configurations, one of which is a water mist configuration. This arrangement has the advantage that once the dispensed mist is propelled by the jet or spray, it can travel a greater distance than a mist dispensed without an external "O-spray" of fluid jets or sprays. The dispensing configuration resulting from this arrangement is shown in figure 4.

Fig. 9 shows an alternative embodiment in which the device 100 comprises a body portion 110 in which a first valve element (not shown) is actuated by a handle member 120. The handle member is pivotally mounted on the body portion. The handle member actuates a valve element in the first conduit to control the flow of fluid from a fluid source (not shown) to the first fluid outlet port 140. As described above, the first fluid outlet port is configured to dispense fluid in the form of a mist.

Control of fluid from the fluid source to the second fluid outlet port 150 is controlled by a control member comprising a rotatable collar 160. Rotation of the collar changes the dispensing profile of fluid dispensed from the second fluid outlet port between the jet and spray profiles and controls flow between "on" and "off. The device 1100 may also include a flow control element. For example, the flow control element may be an adjustable collar 180 circumferentially mounted on the body portion.

In certain embodiments, the device may further comprise a pressure reducing valve or a pressure balancing valve, which may be provided in the first and/or additional fluid communication paths (not shown). Pressure relief valves are known in the art.

Fig. 6-8 illustrate an embodiment in which the first conduit and the additional conduit are disposed in a generally parallel and spaced apart relationship along at least a portion of their respective lengths. In an alternative embodiment, the first and second conduits may be coaxially arranged. The coaxial arrangement of the first conduit and the additional conduit is described below with reference to fig. 10 and 11.

Accordingly, a fluid delivery device is provided comprising at least a first fluid outlet port and at least an additional fluid outlet port. The first fluid delivery conduit is provided with a central bore for communicating the first fluid from a first fluid source to the first fluid outlet port. The apparatus further comprises an additional fluid delivery conduit arranged coaxially with the first fluid delivery conduit for at least a portion of the length of the first fluid delivery conduit, an annular channel being defined between the first fluid delivery conduit and the additional fluid delivery conduit for communicating an additional fluid to the additional fluid outlet port. In an alternative embodiment, the one or more fluids may instead be a powder. In an alternative embodiment, one or more fluids may instead be a gas.

This arrangement is shown in figure 10. The first fluid transport conduit 200 is positioned within the second fluid transport conduit 210. The first fluid transport conduit is provided with an aperture for the first fluid 220 to flow through. The second fluid 230 flows between the outer surface of the first fluid transport conduit 200 and the inner surface of the second fluid transport conduit.

It should be understood that the coaxial arrangement shown in fig. 10 may be applied to devices other than the apparatus for transporting fluids described herein.

Fig. 11 shows the arrangement shown in fig. 10 of a device for dispensing fluid as described herein. The first conduit 300 is provided with holes along which fluid can flow. As shown, the first conduit is in fluid communication with a first fluid outlet port 310. The second conduit 320 is in fluid communication with a second fluid outlet port 330, the second fluid outlet port 330 being annular and dispensing fluid in an "O-shaped" jet or stream. The first and

second conduits

300, 320 are integrally formed with one or more hose conduits (not shown) along which fluid may travel. The hose conduit may comprise a corresponding coaxial arrangement such that only a single hose conduit is required to provide both fluid paths and may therefore be used to provide both fluids simultaneously. In the embodiment shown in fig. 11, the first conduit and the second conduit are in a coaxial relationship along only a portion of their lengths. The first conduit includes a curve or bend to accommodate a valve disposed in the second conduit. In an alternative embodiment, the first and second conduits are arranged coaxially along their respective lengths.

Another embodiment is shown in fig. 12 to 15. These figures illustrate an apparatus 1000 according to an alternative embodiment. The device 1000 includes a housing 1005 and a pistol grip handle 1010 as described above. The apparatus further includes a first conduit 1020, the first conduit 1020 being disposed in a coaxial arrangement with a second conduit 1030. The second conduit at least partially surrounds the first conduit. A first conduit connects a first fluid supply (not shown) to the first outlet port 1040. The second conduit connects an additional fluid supply (not shown), which may be the same or different from the first fluid supply, to the second fluid outlet portion 1050.

The device may include a first handle 1060 that may be rotatably connected to the housing about an axis at right angles to the flow path of the device. According to some embodiments of the invention, the first handle is connected to the control element 1070. The control element 1070 is positioned within the first and second conduits and is configured to control, e.g., allow, reduce, or prevent the flow of fluid along one or both of the first and second conduits.

The control elements are shown in more detail in figures 16, 17 and 22. The control element 1070 includes a first cylindrical element 1080, the first cylindrical element 1080 including a throughbore 1090 positionable in a first portion of a second conduit. The control element further includes a second cylindrical element 1110, the second cylindrical element 1110 being positionable in a portion of a second conduit disposed on the other side of the first conduit. The second cylindrical element includes a through bore 1120 positionable in the second conduit.

The control element also includes a third cylindrical portion 1130 that may be positioned in the first conduit. The third cylindrical portion 1130 includes a narrowed waist portion 1140. The first cylindrical portion, the second cylindrical portion, and the third cylindrical portion may be integrally formed.

The control element further comprises a pair of

lugs

1150, 1160, the

lugs

1150, 1160 being located in

corresponding recesses

1170, 1180 in the housing. The lug is connected to the first handle such that when the handle is actuated, i.e., rotated, the flow control member is also rotated.

Fig. 16 shows the control element in a first position, in which the first and second cylindrical elements are positioned such that their respective through-holes are perpendicular to the long axis of the second conduit. As a result, the sidewall of the cylindrical element is positioned within the lumen of the second conduit to block fluid flow along the second conduit.

The third cylindrical element 1140 includes a narrow waist that is smaller than the area of the first catheter lumen, thereby allowing fluid to flow through the control element in the first catheter. Thus, in this position, the control element prevents fluid flow along the second conduit, but allows fluid flow along the first conduit. As a result, fluid is discharged only via the first (inner) outlet port. The fluid may be sprayed in the form of a jet, spray or mist, depending on the control of the size of the fluid droplets (as described above). Fig. 14B schematically shows a single allocation pattern. Fig. 14A shows the positioning of the handle.

Rotation of the handle about its axis rotates the control member from the first position, as shown in fig. 6, to the second dispensing position, as shown in fig. 12B and 17. Thus, the first and second cylindrical elements are rotated to align their respective through-holes with the long axis of the second conduit portion. In this position, fluid is allowed to flow along the second conduit to the second outlet port. The fluid may then be discharged from the second outlet port, for example, in the form of a jet, spray or mist. In this dispensing mode, fluid is allowed to flow along the first conduit because the diameter of the narrow waist is smaller than the diameter of the first conduit. Therefore, the allocation pattern shown in fig. 12B is a double allocation pattern.

As shown in fig. 12-15, a second handle 1190 is provided which controls the flow of fluid in the first conduit. In the illustrated embodiment, the second handle is disposed downstream of the first handle, although it is contemplated that in other embodiments, the second handle may be upstream of the first handle.

The second handle is rotatably connected to the housing and to the second control element 1200. The second control element comprises a first cylindrical element 1210 located in a first portion of the second conduit and a second cylindrical element 1220 located in a second portion of the second conduit. Each of the first and second cylindrical elements includes a narrow waist having a diameter less than a diameter of a corresponding portion of the second conduit. As a result, fluid is allowed to flow along the second conduit and through the narrow waist to the second outlet port. The second control element further comprises a third cylindrical portion 1230 comprising side walls defining a through hole.

Fig. 13A and 13B illustrate a dispensing mode in which the second handle is rotated to a position that rotates the second control element and causes the through bore of the third cylindrical member to be perpendicular to the long axis of the first conduit. In this position, the third cylindrical element prevents fluid flow through the first conduit so that no or minimal fluid is discharged from the first fluid outlet port. The first and second cylindrical elements allow the passage of fluid due to the respective waisted portions. Whether fluid passes through the second fluid outlet port will depend on whether the first control element is positioned to allow fluid to pass through, as described above.

Thus, the embodiment shown in fig. 12-15 provides multiple dispensing modes depending on the actuation of the first and/or second handles. The device may be in a dual dispense mode wherein fluid is discharged from the first fluid outlet and the second fluid outlet. Alternatively, the device may be in a single dispense mode, wherein fluid is delivered to either the first fluid outlet port or the second fluid outlet port. Yet another dispensing mode is provided in which fluid is prevented from passing through the first and second fluid outlet ports.

Fig. 18-21 illustrate a device 2000 according to some embodiments, wherein control of fluid flow along the first conduit 2005 is controlled by a trigger element 2010. The trigger element 2010 is mounted on the housing and is connected to or integrally formed with a valve element disposed in the first conduit 2005. Movement of the trigger, for example in a linear direction toward or away from the pistol grip, moves the valve element 2020 into the lumen of the first catheter. The valve element 2020 includes an elongated portion 2040 and a bulbous portion 2050. The lumen of the first catheter may include an inner surface having a constricted region 2060. The lumen of the first catheter has a diameter in the constricted region that is smaller than the diameter of the adjacent region of the catheter.

When the trigger is actuated, i.e., moved toward the grip portion, the valve element 2020, and the entrained spherical portion 2050, move away from the constricted region, as shown in fig. 19B and 21B. Suitably, movement of the spherical portion away from the constricted region allows fluid to flow through the constricted region and exit the device via the first fluid outlet port. Thus, fig. 19B shows the device in a dispensing mode, in which the valve element 2020 is moved away from the constricted region, thereby allowing fluid transport via the first conduit.

Actuating the trigger in the opposite direction, e.g., as a result of the user releasing pressure on the trigger, will move the valve element toward the constricted region. The valve element abuts the constricted region such that fluid flow through the constricted region of the first conduit is restricted such that fluid cannot flow to the first fluid outlet port to be expelled. The trigger operated mechanism is known in the art and other arrangements are envisaged.

As shown in fig. 18-21, a control system including a trigger and a valve element may be provided in combination with the handle system described above to control fluid flow in the second conduit. Thus, the handle 2070 may be actuated to restrict or allow fluid flow along the second conduit 2080 while the trigger element may be actuated to restrict or allow fluid flow along the first conduit. Thus, the device of fig. 18 to 21 can provide a variety of dispensing modes, which the user can select for use depending on the environmental conditions.

Throughout the description and claims of this specification, the words "comprise" and "comprise", and variations of the words "comprise" and "comprising", mean "including but not limited to", and are not intended to exclude (and not exclude) other moieties, additives, components, types or steps. In the specification and claims of this specification, the singular encompasses the plural unless the context otherwise requires. In particular, where the indefinite article is used, the description will be understood to refer to the plural as well as the singular, unless the context requires otherwise.

Features, types, characteristics, or groups described in connection with a particular aspect, embodiment, or example of the invention should be understood to apply to any other aspect, embodiment, or example described herein unless incompatible therewith. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and/or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive. The invention is not limited to any of the details of any of the foregoing embodiments. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification (including any accompanying claims, abstract and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed.

The reader's attention is directed to all papers and documents which are filed concurrently with or related to this specification in connection with this application, and all papers and documents which are referred to in this specification in connection with this disclosure and the contents of all such papers and documents are incorporated herein by reference.

Claims

1. Apparatus for dispensing a fluid at a desired location, comprising;

a delivery device, comprising:

a first fluid communication path and an additional fluid communication path;

at least one first fluid outlet port and at least one additional fluid outlet port at least partially surrounding the first fluid outlet port, wherein the first fluid communication path is for connecting each first fluid outlet port to a first fluid source and the additional fluid communication path is for connecting each additional fluid outlet port to an additional fluid source;

a first control member for selectively connecting the first fluid source to the first fluid outlet port; and

an additional control member for selectively connecting the additional fluid source to the additional fluid outlet port;

wherein the first fluid outlet port is configured to dispense fluid in a first dispensing mode, the first dispensing mode providing a water mist pattern, and wherein the additional fluid outlet port is configured to dispense fluid in an additional dispensing mode, the additional dispensing mode providing a jet or spray pattern;

wherein the delivery device is capable of selectively providing a spray or jet pattern alone or a mist pattern alone, or both, wherein the mist pattern is entrained by the surrounding spray or jet pattern to enhance the projection of the mist;

wherein the device comprises a body portion housing at least a portion of the first fluid communication path and at least a portion of the additional fluid communication path;

wherein the device further comprises a form sleeve rotatably coupled to the body portion, and wherein the first dispensing mode comprises a plurality of forms, a fluid form being generated by a rotational position of the form sleeve relative to the body portion.

2. The apparatus of claim 1, wherein the delivery device is a handheld device.

3. The apparatus of claim 1, wherein the delivery device is configured to be mounted on a vehicle or secured to a structure.

4. The apparatus of claim 1, wherein the first fluid source and the additional fluid source comprise a common fluid source.

5. The apparatus of claim 1, wherein the first fluid source is separate and distinct from the additional fluid source.

6. The apparatus of claim 1, wherein the delivery device is operable to dispense fluid in a plurality of dispensing modes.

7. The apparatus of claim 1, wherein the delivery device includes a first actuating member operatively connected to the first control member to selectively connect or disconnect the first fluid source to the first fluid outlet port.

8. The apparatus of claim 7, wherein the first fluid communication path includes a first conduit, and wherein the first control member includes a first valve member disposed in the first conduit.

9. The apparatus of claim 8, wherein the first valve member is movable between an open position and a closed position to selectively connect the first fluid source to the first fluid outlet port.

10. The apparatus of claim 9, wherein the delivery device includes a pistol-like body, the first actuation member is a trigger-type member, and the first valve member is movable between an open position and a closed position by actuation of the trigger-type member.

11. The apparatus of claim 1, wherein the device includes an additional actuating member operatively connected to the additional control member to selectively connect or disconnect the additional fluid source to the additional fluid outlet port.

12. The apparatus of claim 1, wherein the additional fluid communication path comprises an additional conduit, and wherein the additional control member comprises an additional valve member disposed in the additional conduit.

13. The apparatus of claim 12, wherein the additional valve member is movable between an open position and a closed position to selectively connect the additional fluid source to the additional fluid outlet port.

14. The apparatus of claim 11, wherein the delivery device comprises a pistol-like body and the additional actuation member is a handle member.

15. The apparatus of claim 14, wherein the handle member is actuatable to selectively move the valve member between the open position and the closed position.

16. The apparatus of claim 15, wherein the additional fluid communication path comprises an additional conduit, and wherein the additional control member comprises an additional valve member disposed in the additional conduit; wherein the handle member is pivotably connected to the additional valve member and rotation of the handle member about a pivot axis selectively connects the additional fluid source to an additional fluid outlet port.

17. The apparatus of claim 1, wherein the delivery device includes a body portion, and wherein the additional control member includes a rotatable sleeve member mounted on the body portion.

18. The apparatus of claim 1, wherein the first fluid communication path comprises a first conduit, and wherein the first control member comprises a first valve member disposed in the first conduit; wherein the additional fluid communication path comprises an additional conduit and wherein the additional control member comprises an additional valve member disposed in the additional conduit; and wherein the first conduit and the additional conduit are coaxially arranged.

19. The apparatus of claim 1, wherein the first fluid communication path comprises a first conduit, and wherein the first control member comprises a first valve member disposed in the first conduit; wherein the additional fluid communication path comprises an additional conduit and wherein the additional control member comprises an additional valve member disposed in the additional conduit; and wherein the first conduit and the additional conduit are disposed in a substantially parallel arrangement.

20. The apparatus of claim 1, wherein the additional fluid outlet port is annular and entirely surrounds the first fluid outlet port.

21. The apparatus of claim 1, wherein the water mist pattern comprises dispensing droplets having an average diameter between less than 1 micron and 100 microns.

22. The apparatus of claim 1, wherein the device further comprises a gripping member extending from the body portion.

23. The apparatus of claim 15, wherein the handle member extends from the body portion.

24. The apparatus of claim 1 for dispensing fire suppression fluid, and wherein the device is a fire gun or fire monitor.

25. A method of extinguishing a fire using the apparatus of claim 1, the method comprising the steps of:

selectively dispensing fluid from the delivery device at a desired location in the fire by selecting one of at least three suitable dispensing modes, comprising:

delivering fluid individually in a jet or spray through at least one annular fluid outlet port, wherein the at least one annular fluid outlet port at least partially surrounds the central fluid outlet port; and

26. The method of claim 25, further comprising:

the selected one of the modes of operation is selected by selectively actuating one or both of the first control member and the additional control member of the delivery device.

27. The method of claim 25 or 26, wherein the spray is a frustoconical spray.

28. The method of claim 25, further comprising regulating the fluid delivered through the at least one annular fluid outlet port between the jet and the spray.

29. The method of claim 25, further comprising: