Patent Publication Number: US-2021180816-A1

Title: Field replaceable fluid element methods and systems for fluidic processors

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation-in-part of U.S. patent application Ser. No. 16/044,711, filed Jul. 25, 2018, claims the benefit of U.S. Provisional Patent Application 62/536,537 filed on Jul. 25, 2017, the disclosures of which are hereby incorporated by reference in their entirety. 
    
    
     FIELD OF THE INVENTION 
     This invention relates to fluidic elements for fluidic processors and more particularly to the design and implementation of field replaceable fluidic elements for fluidic processors such as electrode humidifier cylinders for humidifiers. 
     BACKGROUND OF THE INVENTION 
     A humidifier is a device that increases humidity (moisture) in a single room or an entire building. Point-of-use humidifiers are commonly used to humidify a single room, while whole-house or furnace humidifiers, which connect to a building&#39;s home&#39;s heating, ventilation and air conditioning (HVAC) system, provide humidity to the building. Large humidifiers are used in commercial, institutional, or industrial contexts, often as part of a large HVAC system. 
     The need for humidifiers arises in low humidity environments which may occur in hot, dry desert climates, or indoors in artificially heated spaces. In winter, especially when cold outside air is heated indoors, the humidity may drop as low as 10-20%. This low humidity can cause adverse health effects for humans and animals within these environments either as workers, visitors, or residents. Industrial humidifiers may also be used when a specific humidity level must be maintained to achieve specific requirements such as preventing static electricity buildup or preserving material properties (e.g. art galleries, museums, libraries, and their associated storage). Whilst evaporative humidifiers, natural humidifiers, vapourizing humidifiers, impeller humidifiers and ultrasonic humidifiers are all common types, it is the vapourizing humidifier (or vapourizer, steam humidifier, warm mist humidifier) that dominates the industry for most commercial humidification systems. 
     In operation, a vapourizing humidifier comprises a water tank that is at least partially filled with water, creating a water reservoir and a vapour region above the water reservoir within water tank. Heat for heating the water within the water tank is provided by a means such as from an electrical immersion heater or mains voltage electrodes immersed in the water on smaller domestic units or a heat exchanger transferring heat from hot combustion gases of oil or gas in larger commercial units. The water vapour, or steam, forms within water tank in the vapour region above the water reservoir. This vapour region is fluidly connected to a steam tube or steam nozzle that passes through the upper region of the water tank. 
     However, humidification systems historically were associated with time-consuming and costly maintenance required to remove the minerals typically left behind when water is boiled. Operators require a humidifier that can create clean steam and sustain long-term efficient operation. Accordingly, over forty years Nortec established electrode based humidifiers with a disposable cylinder to meet client expectations. As clean steam is produced, the in-steam cylinder minerals are removed in intervals and through an automatic drain system. Nortec&#39; s patented auto-adaptive control system is designed to produce rated output capacity until the very end of a functioning cylinder life is reached. Once a cylinder is no longer functioning it is effortlessly removed and replaced with a new powerful, clean cylinder. In many humidifiers complete disassembly is required for cleaning through the use of hazardous cleaning substances to fully remove the minerals. In Nortec&#39;s designed humidifiers the cylinder is removed and replaced so that customer maintenance costs are reduced. Further, when the cylinders are produced of inert plastics and retain only the water borne minerals, disposal problems are minimal. 
     However, such field replacement of steam cylinders is still not a straight-forward operation and there is significant risk and potential for damage to the replacement cylinder and the humidifier as fluidic seals for the water inlet and steam outlet must be unmade and made for the old and new cylinder as well as electrical connections for heater elements, level sensors etc. Similar issues exist with other elements disposed within fluidic processing systems. 
     Accordingly, it would be beneficial to provide consumers and maintenance personnel with means to deploy replacement cylinders etc. for domestic, retail, and commercial systems that reduces the likelihood of damage to the fluidic seals, electrical connectors etc. which can at a minimum damage the replacement cylinder requiring that another replacement cylinder be acquired and deployed. Potentially, the damage is to the main unit&#39;s fluidic connections and/or electrical connections requiring that these be repaired or potentially a complete new system installed. Such damage thereby increasing downtime, costs, etc. as well as requiring maintenance personnel. 
     It would beneficial for embodiments of the invention to operate not only with water/steam but with other materials that are evaporated for subsequent transfer in gaseous state and employed within a range of applications within the medical, chemical, environmental fields etc. It would be further beneficial for embodiments of the invention to work with cylinders/cartridges etc. other than humidifiers such as filters, etc. 
     Other aspects and features of the present invention will become apparent to those ordinarily skilled in the art upon review of the following description of specific embodiments of the invention in conjunction with the accompanying figures. 
     SUMMARY OF THE INVENTION 
     It is an object of the present invention to address fluidic elements for fluidic processors and more particularly to the design and implementation of field replaceable fluidic elements for fluidic processors such as electrode humidifier cylinders for humidifiers. 
     In accordance with an embodiment of the invention there is provided a device comprising:
     a first fluidic assembly for coupling to a first fluid port of a replaceable cylinder for at least one of providing and receiving a first fluid to the cylinder; and   a second fluidic assembly for coupling to the second fluid port for receiving a second fluid from a second fluid port of the replaceable cylinder.   

     In accordance with an embodiment of the invention there is provided a device comprising:
     a first fluidic assembly for coupling to a first fluid port of a replaceable cylinder for at least one of providing and receiving a first fluid to the cylinder; and   a second fluidic assembly for coupling to the second fluid port for receiving a second fluid from a second fluid port of the replaceable cylinder; wherein   the first fluidic assembly comprises:
       a coupling for mating to the first fluid port; and   a mounting for coupling the first fluidic assembly to a support within a system of which the cylinder forms part; wherein   the mounting and support allow the first fluidic assembly to tilt such that at least one of the first fluidic assembly can be titled away from the system to allow the cylinder to be removed from the system or the first fluidic assembly can be tilted towards the system after a cylinder has been mounted to the first fluidic assembly for installation to the system.   
       

     In accordance with an embodiment of the invention there is provided a device comprising:
     a first fluidic assembly for coupling to a first fluid port of a replaceable cylinder for at least one of providing and receiving a first fluid to the cylinder; and   a second fluidic assembly for coupling to the second fluid port for receiving a second fluid from a second fluid port of the replaceable cylinder; wherein   the first fluidic assembly comprises:
       a coupling for mating to the first fluid port; and   a mounting for coupling the first fluidic assembly to a support within a system of which the cylinder forms part; wherein   the mounting and support allow the first fluidic assembly to be moved and tilted such that at least one of the first fluidic assembly can be moved and titled away from the system to allow the cylinder to be removed from the system or the first fluidic assembly can be moved tilted towards the system after a cylinder has been mounted to the first fluidic assembly for installation to the system.   
       

     In accordance with an embodiment of the invention there is provided a device comprising:
     a first fluidic assembly for coupling to a first fluid port of a replaceable cylinder for at least one of providing and receiving a first fluid to the cylinder; and   a second fluidic assembly for coupling to the second fluid port for receiving a second fluid from a second fluid port of the replaceable cylinder; wherein   the first fluidic assembly comprises:
       a third fluid port;   a coupling;   a mounting for coupling the first fluidic assembly to a support within a system of which the cylinder forms part; and   a means for moving the coupling from a first position to a second position; wherein   in the first position the coupling is lowered away from the cylinder allowing the cylinder to be inserted and removed from a system comprising the cylinder; and   in the second position the coupling is raised providing a fluidic coupling between the first fluid port and the third fluid port.   
       

     In accordance with an embodiment of the invention there is provided a device comprising:
     a first fluidic assembly for coupling to a first fluid port of a replaceable cylinder for at least one of providing and receiving a first fluid to the cylinder; and   a second fluidic assembly for coupling to the second fluid port for receiving a second fluid from a second fluid port of the replaceable cylinder; wherein   at least one of:   the first fluidic assembly comprises:
       a third fluid port;   a coupling;   a mounting for coupling the first fluidic assembly to a support within a system of which the cylinder forms part; and   a means for moving the coupling from a first position to a second position; wherein   in the first position the coupling is lowered away from the cylinder allowing the cylinder to be inserted and removed from a system comprising the cylinder; and   in the second position the coupling is raised providing a fluidic coupling between the first fluid port and the third fluid port; and   
       the second fluidic assembly comprises:
       a fourth fluid port;   a coupling;   a mounting for coupling the second fluidic assembly to a support within a system of which the cylinder forms part; and   a means for moving the coupling from a first position to a second position; wherein   in the first position the coupling is raised away from the cylinder allowing the cylinder to be inserted and removed from a system comprising the cylinder; and   in the second position the coupling is lowered providing a fluidic coupling between the first fluid port and the third fluid port.   
       

     In accordance with an embodiment of the invention there is provided a device comprising:
     a first fluidic assembly for coupling to a first fluid port of a replaceable cylinder for at least one of providing and receiving a first fluid to the cylinder; and   a second fluidic assembly for coupling to the second fluid port for receiving a second fluid from a second fluid port of the replaceable cylinder; wherein   at least one of:
       removal of the cylinder from at least one of mating with at least one of the first fluidic assembly and the second fluidic assembly automatically disconnects at least one electrical connection of a plurality of electrical connections to the cylinder; and   insertion of the cylinder to at least one of mating with at least one of the first fluidic assembly and the second fluidic assembly automatically connects at least one electrical connection of a plurality of electrical connections to the cylinder.   
       

     In accordance with an embodiment of the invention there is provided a device comprising:
     a first fluidic assembly for coupling to a first fluid port of a replaceable cylinder for at least one of providing and receiving a first fluid to the cylinder; and   a second fluidic assembly for coupling to the second fluid port for receiving a second fluid from a second fluid port of the replaceable cylinder; wherein
       a system comprising the first fluidic assembly and the second fluidic assembly also comprises at least one fitting of a plurality of fittings, each fitting having a predetermined geometry matching a predetermined portion of the external geometry of the cylinder; and   the at least one fitting of the plurality of fittings aligns at least one of the first fluid port of the replaceable cylinder with the first fluidic assembly and the second first fluid port of the replaceable cylinder with the second fluidic assembly.   
       

     In accordance with an embodiment of the invention there is provided a device comprising a first fluidic assembly for coupling to a first fluid port of a replaceable cylinder for providing a first fluid to the cylinder. 
     In accordance with an embodiment of the invention there is provided a method of accessing a replaceable cylinder within a fluidic processing system comprising mounting the replaceable cylinder upon a first mount which allows the replaceable cylinder to be pivoted away from the system allowing a user to remove the cylinder without interference from a shell of the system by lifting it away from the first mount. 
     Other aspects and features of the present invention will become apparent to those ordinarily skilled in the art upon review of the following description of specific embodiments of the invention in conjunction with the accompanying figures. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Embodiments of the present invention will now be described, by way of example only, with reference to the attached Figures, wherein: 
         FIG. 1  depicts a humidifier with replaceable cylinder according to the prior art; 
         FIGS. 2A and 2B  depict a mechanism according to an embodiment of the invention for engaging and disengaging a cylinder within a fluidic system; 
         FIG. 3  depicts a mechanism according to the embodiment of the invention depicted in  FIGS. 2A and 2B  for engaging and disengaging a cylinder within a fluidic system at either end; 
         FIGS. 4 and 5  depict a mechanism according to an embodiment of the invention for engaging and disengaging a cylinder within a fluidic system; 
         FIG. 6  depicts a mechanism according to an embodiment of the invention for engaging and disengaging a cylinder within a fluidic system; 
         FIGS. 7A to 9  depict a mechanism according to an embodiment of the invention for engaging and disengaging a cylinder within a fluidic system; 
         FIG. 10  depicts a mechanism according to an embodiment of the invention for engaging and disengaging a cylinder within a fluidic system; 
         FIGS. 11A to 12B  depict a mechanism according to an embodiment of the invention for engaging and disengaging a cylinder within a fluidic system; and 
         FIGS. 13A to 14B  depict a mechanism according to an embodiment of the invention for engaging and disengaging a cylinder within a fluidic system. 
     
    
    
     DETAILED DESCRIPTION 
     The present invention is direct to humidifiers and more particularly to the design and implementation of fluid carry-over barriers within steam nozzles. 
     The ensuing description provides representative embodiment(s) only, and is not intended to limit the scope, applicability or configuration of the disclosure. Rather, the ensuing description of the embodiment(s) will provide those skilled in the art with an enabling description for implementing an embodiment or embodiments of the invention. It being understood that various changes can be made in the function and arrangement of elements without departing from the spirit and scope as set forth in the appended claims. Accordingly, an embodiment is an example or implementation of the inventions and not the sole implementation. Various appearances of “one embodiment,” “an embodiment” or “some embodiments” do not necessarily all refer to the same embodiments. Although various features of the invention may be described in the context of a single embodiment, the features may also be provided separately or in any suitable combination. Conversely, although the invention may be described herein in the context of separate embodiments for clarity, the invention can also be implemented in a single embodiment or any combination of embodiments. 
     Reference in the specification to “one embodiment”, “an embodiment”, “some embodiments” or “other embodiments” means that a particular feature, structure, or characteristic described in connection with the embodiments is included in at least one embodiment, but not necessarily all embodiments, of the inventions. The phraseology and terminology employed herein is not to be construed as limiting but is for descriptive purpose only. It is to be understood that where the claims or specification refer to “a” or “an” element, such reference is not to be construed as there being only one of that element. It is to be understood that where the specification states that a component feature, structure, or characteristic “may”, “might”, “can” or “could” be included, that particular component, feature, structure, or characteristic is not required to be included. 
     Reference to terms such as “left”, “right”, “top”, “bottom”, “front” and “back” are intended for use in respect to the orientation of the particular feature, structure, or element within the figures depicting embodiments of the invention. It would be evident that such directional terminology with respect to the actual use of a device has no specific meaning as the device can be employed in a multiplicity of orientations by the user or users. 
     Reference to terms “including”, “comprising”, “consisting” and grammatical variants thereof do not preclude the addition of one or more components, features, steps, integers or groups thereof and that the terms are not to be construed as specifying components, features, steps or integers. Likewise, the phrase “consisting essentially of”, and grammatical variants thereof, when used herein is not to be construed as excluding additional components, steps, features integers or groups thereof but rather that the additional features, integers, steps, components or groups thereof do not materially alter the basic and novel characteristics of the claimed composition, device or method. If the specification or claims refer to “an additional” element, that does not preclude there being more than one of the additional element. 
     A “vapourizer” as used herein and throughout this disclosure, refers to a system designed to provide a source of a predetermined material or materials within the gaseous state. Accordingly, a vapourizer may include, but not be limited to, a humidifier for providing steam within an air conditioning application. 
     A “scaffold” or “scaffolds” as used herein, and throughout this disclosure, refers to a structure that is used to hold up, interface with, or support another material or element(s). This includes, but is not limited to, such two-dimensional (2D) structures such as substrates and films, three-dimensional (3D) structures such as geometrical objects, non-geometrical objects, combinations of geometrical and non-geometrical objects, naturally occurring structural configurations, and manmade structural configurations. A scaffold may be solid, hollow, and porous or a combination thereof. A scaffold may contain recesses, pores, openings, holes, vias, and channels or a combination thereof. A scaffold may be smooth, textured, have predetermined surface profiles and/or features. A scaffold may be intended to support one or more other materials, one or more elements, one or more structures etc. A scaffold may include, but not be limited to, a spine of a device and/or a framework, for example, which also supports elements disposed within the scaffold either partially or completely. A scaffold may include, for example, a ring around an opening of an upper portion of a humidifier cartridge body such that the wall of the humidifier cartridge body extends up and around from the ring and over enclosing the upper portion of the chamber. A scaffold may include, for example, a ring around an opening of a lower portion of a humidifier cartridge body such that the wall of the humidifier cartridge body extends down and around from the ring and enclosing the lower portion of the chamber. 
     A “plastic” as used herein, and throughout this disclosure, refers to a material consisting of any of a wide range of synthetic or semi-synthetic organic compounds that are malleable and can be molded. Plastics are typically organic polymers of high molecular mass, but may contain other substances. They are usually synthetic, most commonly derived from petrochemicals, but many are made from renewable materials. Accordingly a plastic may include, but not be limited to, polyester, polyethylene terephthalate, polyethylene, high-density polyethylene (HDPE), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), low-density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), high impact polystyrene (HIPS), polyamides (PA), nylons, acrylonitrile butadiene styrene (ABS), polycarbonate (PC), polyurethanes (PU), maleimide/bismaleimide, melamine formaldehyde (MF), phenolics (PF) or (phenol formaldehydes), polyetheretherketone (PEEK), polyetherimide (PEI), polyimide, polymethyl methacrylate (PMMA), polytetrafluoroethylene (PTFE), and polysulfone. It would be evident that the plastics available for a specific application may be a subset of these as well as others not identified wherein the plastic may be specified based upon factors including, but not limited to, the required operating temperatures, chemical(s) vapourised, cost, and manufacturability. 
     A “polyester” as used herein, and throughout this disclosure, refers to a category of polymers that contain the ester functional group in their main chain. This includes, but is not limited to polyesters which are naturally occurring chemicals as well as synthetics through step-growth polymerization, for example. Polyesters may be biodegradable or not. Polyesters may be a thermoplastic or thermoset or resins cured by hardeners. Polyesters may be aliphatic, semi-aromatic or aromatic. Polyesters may include, but not be limited to, those exploiting polyglycolide, polylactic acid (PLA), polycaprolactone (PCL), polyhydroxyalkanoate (PHA), polyhydroxybutyrate (PHB), polyethylene adipate (PEA), polybutylene succinate (PBS), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), and polyethylene naphthalate (PEN). 
     A “thermoplastic” or “thermosoftening plastic” as used herein and throughout this disclosure, refers to a category of polymers that become pliable or moldable above a specific temperature and solidify upon cooling. Thermoplastics may include, but not be limited, polycarbonate (PC), polyether sulfone (PES), polyether ether ketone (PEEK), polyethylene (PE), polypropylene (PP), poly vinyl chloride (PVC), polytetrafluoroethylene (PTFE), polyimide (PI), polyphenylsulfone (PPSU), polychlorotrifluoroethene (PCTFE or PTFCE), florinated ethylene propylene (FEP), and perfluoroalkoxy alkane (PFA). it would be evident that the thermoplastics available for a specific application may be a subset of these as well as others not identified wherein the plastic may be specified based upon factors including, but not limited to, the required operating temperatures, chemical(s) vapourised, cost, and manufacturability. 
     A “plastic”, “polyester” or “thermoplastic” as used herein may refer to the material in an unfilled or filled state, i.e. 100% material or X % material and (100-X) % filler. A filler may be a single material or a combination of materials. Examples of fillers may include, but not be limited to, graphite particles, glass particles, carbon particles/fibers, graphite particles/fibers, glass particles/fibers, quartz particles/fibers, boron particles/fibers, ceramic particles/fibers or whiskers such as alumina and silica, metal-coated particles/fibers, ceramic-coated particles/fibers, diamond-coated particles/fibers, carbon nanotubes, aramid particles/fibers such as Kevlar™, poly-phenylenebenzobisoxazole (“PEO”) particles/fibers such as Zylon™, metal particles/fibers, polythenes, polyacrylates, liquid crystalline polymers, and aromatic polyesters such as Vectran™. 
     A “metal” as used herein, and throughout this disclosure, refers to a material that has good electrical and thermal conductivity. Such materials may be malleable and/or fusible and/or ductile. Metals may include, but not be limited to, aluminum, nickel, copper, cobalt, chromium, silver, gold, platinum, iron, zinc, titanium, and alloys thereof such as bronze, stainless steel, stainless steel, brass, and phosphor bronze. It would be evident that the metals and/or alloys available for a specific application may be a subset of these as well as others not identified wherein the plastic may be specified based upon factors including, but not limited to, the required operating temperatures, chemical(s) vapourised, cost, and manufacturability. 
     A “silicone” as used herein, and throughout this disclosure, refers to a polymer that includes any inert, synthetic compound made up of repeating units of siloxane. 
     An “elastomeric” material or “elastomer” as used herein, and throughout this disclosure, refers to a material, generally a polymer, with viscoelasticity. Elastomers may include, but not be limited to, unsaturated rubbers such as polyisoprene, butyl rubber, ethylene propylene rubber, silicone rubber, fluorosilicone rubber, fluoroelastomers, perfluoroelastomers, and thermoplastic elastomers. 
     The term “flexible,” as used herein, refers to the ability of a body that is capable of being bent or flexed. Something that is flexible can be, for example, resilient or malleable. The term “resilient,” as used herein, refers to the ability of a body that has been subjected to an external force to recover, or substantially recover, its original size and/or shape, following deformation. The term “malleable,” as used herein, refers to the ability of a body that has been subjected to an external force to deform and maintain, or substantially maintain, the deformed size and/or shape. 
     Within the following descriptions in respect of  FIGS. 1 to 8  embodiments of the invention are described with respect to steam humidification systems and FL-COBs for steam nozzles forming part of such systems. However, it would be evident that the concepts described and depicted may be applied to other vaporisation systems and vapours/fluids, e.g. vapours/fluids other than steam/water. 
       FIG. 1  depicts a humidifier  100  with replaceable cylinder  130  according to the prior art. As depicted the humidifier  100  comprises a front cover  150 , shell  160 , REplaceable HUmidifier Cylinder (REHUC)  130 , CYlinder Plugs (CYPs)  110  for connection to REHUC  130  electrodes/sensors etc., flexible hose  120  with hose clamp, drain and power switch  170 , outlet pipe  180  and cover screws  140 . In order to replace the REHUC  130  the user disconnects the electrical mains power at the external disconnect before any servicing. The inside of the humidifier cabinet  160  contains high voltage components and wiring. The existing cylinder is drained by switching the drain and power switch  170  to the ON or Drain position. Alternatively, draining of the cylinder may be performed automatically due to detection of a fault or expiration of the cylinder life. 
     Once the REHUC  130  is drained the user turns the drain and power switch  170  to the off position and then turns off the water supply at the shut off valve. Next the screws  140  securing the front cover  150  to the shell  160  are undone allowing the cover  150  to be removed. Next the cylinder plugs  110  are removed from the electrical contacts on the top of the REHUC  130 . 
     Next, the hose clamp is undone allowing the flexible hose to be decoupled from the outlet pipe  180 . The user can now remove the REHUC  130  by lifting/tipping the REHUC  130  out from the inlet water and/or drain connection (not shown). It is during this stage that the user can damage the inlet water connection of the humidifier as well as damage other electrical interfaces to the REHUC  130 . Installation of the new REHUC  130  requires that the user inserts the bottom connection of the REHUC  130  into the inlet water and/or drain connection which is achieved by lifting/tilting the REHUC  130  and then positioning/dropping the REHUC  130 . In order to ensure a fluidic seal an O-ring is typically employed which may be placed onto the lower inlet of the REHUC  130  to fit between the REHUC  130  inlet and the inlet water and/or drain connection or may be part of the inlet and/or drain connection assemblies. This O-ring may be supplied discretely with the REHUC  130  for the user to attach or the O-ring may be part of the drain valve system such that replacement is only required in the event of damage. The user then re-attaches the flexible hose to the outlet of the REHUC  130  and outlet pipe  180  once the REHUC  130  has been position and tightens the hose clamps. Next the cylinder plugs  110  are attached to the appropriate electrical contacts on the top of the REHUC  130 . 
     At this point the user replaces the humidifier cover  150  and secures with the screw  140  before turning back on the electrical power at the external disconnect and turning the water shut off valve back on. Finally, the user turns the drain switch to on such that the REHUC  130  fills and the electrical heaters generate steam. In order to provide compact humidifiers, the manufacturer will typically make the shell  160  as small as possible relative to the REHUC  130 . This coupled with the outlet pipe  180 , electrical cabling, controller, power supply etc. lead to the available space for manipulating the REHUC  130  being minimal. Accordingly, damaging one or more of the inlet water and/or drain connection, bottom inlet of the REHUC  130 , O-ring, and O-ring retaining groove is easy. Equally, visibility when inserting the REHUC  130  may be limited so that distortion/movement of the O-ring may not be evident until the REHUC  130  is inserted freeing the user to view or when the humidifier is re-started through a leaking connection. 
     Within some embodiments of the invention the inlet fluid may require a valve be closed. In other embodiments of the invention an inlet valve may default to closed position without any power. 
     Referring to  FIG. 2A  there are depicted first to third views  200 A to  200 C of a mechanism according to an embodiment of the invention for engaging and disengaging a REHUC such as cylinder  2000  within a fluidic system. As depicted the cylinder  2000  comprises a lower portion  211  with inlet/drain connection  214  and upper portion  212  with steam outlet  213 . Also depicted is a movable coupling assembly (MCA)  220  comprising a body  221 , fluidic-mechanical coupling  222 , handle  223  and movable sleeve  224 . As evident in uncoupled image  300 A and coupled image  300 B the handle  223  raises/lowers the movable sleeve  224  relative to the body  221  and fluidic-mechanical coupling  222  together with the steam outlet  213  and upper portion  212  of cylinder  2000 . Accordingly, the movable sleeve  224  allows for the coupling between the outlet portion of the humidifier (coupled via the fluidic-mechanical coupling  222 ) and the steam outlet  213  to be made/broken without requiring the cylinder  2000  be moved. Whilst a gap G is depicted within uncoupled image  200 C and coupled image  200 D in  FIG. 2B  it would be evident to one skilled in the art that this gap may be zero or a predetermined value. Optionally, the movable sleeve  224  may have a profile at the top allowing the steam outlet  213  of the cylinder  2000  to be slid into the moveable sleeve which is then raised to put the steam outlet  213  within the sealed joints between it and the movable sleeve  224  and the movable sleeve  224  and the fluidic-mechanical coupling  222 . 
     Now referring to  FIG. 3  there are depicted first and second three-dimensional (3D) perspective images  300 A and  300 B wherein the movable coupling assembly (MCA)  220  is disposed at the top of the REHUC, such as cylinder  2000 , as depicted in respect of  FIGS. 2A  and  2 B, for engaging and disengaging with fluidic output port with the steam outlet  214  and at the bottom of the REHUC for engaging and disengaging with fluidic inlet/drain connection  214  according to embodiments of the invention. In the second configuration in second image  300 B the REHUC, such as cylinder  2000 , within the fluidic system is inserted into the fluidic system and installed with its weight pushing it down such that its inlet/drain connection  214  engages the fluidic inlet port of the fluidic system. The MCA  220  is then raised such that it engages the steam outlet  214 . Beneficially, the embodiments of the invention depicted in  FIGS. 2A to 3  provide a fluidic connection through pressure along the axis of the fluidic connection closing the joint rather requiring a radial pressure through a clamp or clamps applied to a hose or hoses fitting over the inlet and/or outlet. 
     Within  FIGS. 4 and 5  there are depicted first to fourth images  400 A to  400 D respectively for a mechanism according to an embodiment of the invention for engaging and disengaging a cylinder within a fluidic system. Accordingly, first image  400 A depicts the REHUC cylinder comprising outlet  410 , upper body portion  420 , lower body portion  430  and inlet-drain  440 . Second image  400 B depicts the mechanism comprising outlet coupling  450 , handle  460 , inlet-drain assembly  470  and housing  480 . Accordingly, the assembled cylinder—mechanism as configured when the REHUC is in use is depicted in third image  400 C. Referring to  FIG. 4D  movement of the handle  460  results in cams  485  rotating and moving the inlet-drain assembly  470  vertically via guides  490  and frame elements  490  of housing  480 . Accordingly, removal of the cylinder is accomplished by pulling the handle down thereby lowering the inlet-drain assembly  470  (and cylinder if decoupled at the upper end) wherein the cylinder can be lifted out vertically from the inlet-drain assembly  470  avoiding any tipping/tilting and forced removal of the old REHUC and/or insertion of the new REHUC. Once the new REHUC is has its inlet-drain  440  inserted into the inlet-drain assembly  470  the handle can be raised thereby lifting the cylinder and inlet-drain assembly  470  back vertically allowing connection of the steam outlet. 
     Now referring to  FIG. 6  there are depicted first to third images  600 A to  600 C relating to a mechanism according to an embodiment of the invention for engaging and disengaging a cylinder within a fluidic system. As depicted a cylinder  610  with an inlet  630  is attached to a base  620  which has inlet/drain connections  640  and  650  respectively. The base  620  may be designed to fit a base element within the humidifier such that the base  620  is slid into the base element and fluidic connections are made to the inlet/drain connections  640  and  650  respectively such as via sliding inner tubes designed to engage the inlet/drain connections  640  and  650  respectively with O-ring seals for example. Such a design being essentially the inverse of the movable sleeve  224  in  FIGS. 2A through 3  respectively wherein the inner tube moves relative to a fixed external tube rather than an outer tube moves relative to a fixed internal tube. Base  620  may be retained in position relative to the base element by a mechanical fixture or fixtures. Optionally, the inlet/drain connections  640  and  650  respectively may project outside the footprint of the base  620  allowing a flexible hose to be attached and retained via a hose clamp. 
     Now referring to  FIGS. 7A to 9  there are depict if first to eighth images  700 A- 700 D,  800 A- 800 B, and  900 A- 900 B a mechanism according to an embodiment of the invention for engaging and disengaging a cylinder within a fluidic system. Referring to first and second images  700 A and  700 B respectively in  FIG. 7A  there are depicted three-dimensional (3D) perspective views of the mechanism in “closed” (cylinder installed within humidifier) and “open” (where the cylinder has been pivoted forward during installation/removal). Two-dimensional (2D) side elevations of the mechanism in the “open” and “closed” positions are depicted in fifth and sixth images  800 A and  800 B respectively in  FIG. 8 . As depicted the cylinder  710  comprises an outlet  720  which engages with steam tube  730  when the cylinder  710  is pivoted into the humidifier. The cylinder  710  being mounted to an inlet-drain assembly  740  which is mounted to base plate  750  via guides  755 . Within the 2D side elevation views in  FIG. 14  the steam tube  730  is covered by the housing  770 . 
     Referring to  FIG. 7B  there are depicted third and fourth images  700 C and  700 D respectively 3D perspective views of the mechanism in the “closed” position wherein the cylinder  710  is vertical and the outlet  720  engaged with the steam tube  730 . In third image  700 C the majority of the housing  770  has been removed except the electrical connectors  785  which engage the electrical feed-throughs  780  through the upper portion of the cylinder  710 . Accordingly, as the cylinder is tilted from the “open” to the “closed” position and vice-versa the electrical feed-throughs  780 , which connect to electrodes, sensors etc. within the cylinder  710 , connect/disconnect respectively with the electrical connectors  785  so that the electrical connections to the cylinder are made concurrently with the fluidic connections. Also visible is a flange  735  of the steam tube  730 . Fourth image  700 D depicts the upper portion of the mechanism and cylinder  710  with the housing  770  in place wherein access ports  775  are visible at the rear allowing the electrical feed-throughs  780  to move through the wall of the housing  770 . 
     Now referring to  FIG. 9  the inlet-drain assembly  740  and base plate  750  are depicted without the cylinder  710  etc. in the “closed” and “open” positions in seventh and eighth images  900 A and  900 B respectively. Accordingly, as the user pulls/pushes the cylinder the inlet-drain assembly  740  moves along the guides  755  within the base plate  750 . Accordingly, to remove a REHUC the user pulls the cylinder  710  which removes the end of the outlet  720  from within the end of the steam tube  730  and allows the cylinder to be lifted away from the humidifier without the humidifier interfering. Hence, to insert a new REHUC the user couples the fluid coupling at the bottom of the cylinder  710  to the inlet-drain assembly  740  and then pushes the cylinder  710  wherein the guides raise and align it with respect to the steam tube  730  to make the output fluid connection. 
     Referring to  FIG. 10  there are depicted first to third images  1000 A to  1000 C respectively for a mechanism according to an embodiment of the invention for engaging and disengaging a cylinder within a fluidic system. As depicted the cylinder  1010  has first and second fluid couplings  1020  and  1030  respectively together with a handle  1040 . Accordingly, the cylinder  1010  may be slid into the humidifier making the fluidic connections or alternatively flexible hoses may be coupled to the first and second fluid couplings  1020  and  1030  respectively and the cylinder  1010  positioned within the humidifier. 
       FIGS. 11A to 12B  there is depicted a mechanism according to an embodiment of the invention for engaging and disengaging a cylinder within a fluidic system. Referring to  FIG. 11A  there are depicted first to third images  1100 A to  1100 C respectively for a REHUC mechanism according to an embodiment of the invention for engaging and disengaging a cylinder within a fluidic system. Accordingly, first image  1100 A depicts the REHUC cylinder comprising outlet  1110 , upper body portion  1120 , lower body portion  1130  and inlet-drain assembly  1140  together with steam tube comprising coupling  1150 A and tube  1150 B (with a plurality of steam outlets disposed along its length). The steam tube being coupled to the RHUC cylinder via tubing  1160  which is mounted to the outlet  1110  by first attachment  1170 A and to the coupling  1150 A via second attachment  1170 B. Second and third images  1100 B and  1100 C depict the REHUC mechanism in two different 3D perspective views. 
     Within  FIG. 11B  there are depicted first to third images  1100 D to  1100 F respectively. First image  1100 D being a close-up 3D perspective view of the REHUC cylinder outlet and steam tube coupling depicting the upper body portion  1120  of the REHUC cylinder with outlet  1110  together with the injector comprising coupling  1150 A, tube  1150 B, and abutment plate  1150 C. These being joined by tubing  1160  which is mounted to the outlet  1110  by first attachment  1170 A and to the coupling  1150 A via second attachment  1170 B. Second image  1100 E depicts the injector in isolation comprising coupling  1150 A, tube  1150 B, and abutment plate  1150 C whilst third image  1100 C depicts the REHUC cylinder comprising outlet  1110 , upper body portion  1120 , lower boy portion  1130  and inlet  1180 . The inlet  1180  coupling to the inlet-drain assembly  1140  when the REHUC cylinder is mounted to it and positioned. 
     Referring to  FIG. 12A  first and second image  1200 A and  1200 B depict a 3D perspective views of the lower portion of the assembly. First image  1200 A comprising inlet-drain assembly and REHUC cylinder coupled together whilst second image  1200 B depicts only the inlet-drain assembly. In first image  1200 A the REHUC cylinder is depicted only by lower body portion  1120  whereas the inlet-drain assembly comprises a tray  1140 E, a first mounting  1140 A, a fluidic coupler  1140 C and valve controller  1140 D. In second image  1200 B these are also depicted together with second mounting  1140 B and inlet receptacle  1140 F. The inlet receptacle  1140 F being dimensioned to fit around the outer diameter of the inlet of the REHUC cylinder when it is inserted. Fluid (e.g. water) flow into the REHUC cylinder from the source, e.g. water reservoir, during vapour fluid generation (operation of REHUC) or cleaning cycles and fluid flow from the REHUC cylinder during a drain sequence of a cleaning cycle or REHUC removal being via the fluidic coupler  1140 C which is controlled via valve controller  1140 D. The fluidic coupler  1140 C receiving fluid from external fluid system via controller inlet port  1140 G wherein it is coupled to the inlet receptacle  1140 F and therein the inlet  1180  of the REHUC cylinder when mounted under the control of the valve controller  1140 D. The fluidic coupler  1140 C also draining fluid from the REHUC cylinder via the inlet receptacle  1140 F under the control of the valve controller  1140 D wherein the fluid being drained is directed to drain  1140 I of the tray  1140 E via controller outlet port  1140 H. 
     Referring to  FIG. 12B  there is depicted a 3D perspective view of the inlet-drain assembly depicting the controller inlet port  1140 G, drain  1140 I, inlet receptacle  1140 F, valve controller  1140 D, fluidic coupler  1140 C as described and depicted in  FIG. 12A . Also depicted are first mounting  1140 A, which comprises first coupler mount  1210  and first support  1215 , and second mounting  1140 B, which comprises second coupler mount  1220  and second support  1225 . The first and second supports  1215  and  1225  being attached to the tray and allowing insertion/retention of the assembly (comprising controller inlet port  1140 G, inlet receptacle  1140 F, valve controller  1140 D, fluidic coupler  1140 C etc. to the tray) as well as rotation of the assembly relative to the tray. Accordingly, the assembly is vertically and laterally positioned by the heights of the first and second supports  1215  and  1225  and laterally restrained by flexible support  1240  which is pushed aside as the assembly is lowered and slid into first mounting  1140 A. Rotation of the assembly with respect to the tray is prevented in one direction by arm  1230  on the fluidic coupler  1140 C engaging stop  1235  on the base of the tray. Accordingly, the assembly can rotate in one direction. 
     At initial installation of the REHUC cylinder the assembly is rotated away from substantially parallel to the tray, the REHUC cylinder mounted such that the inlet  1180  is within the inlet receptacle  1140 F, and then the assembly with REHUC cylinder rotated till the arm  1230  engages the stop  1235 . Once in this position the tubing  1160  is attached to the outlet  1110  of the REHUC cylinder by first attachment  1170 A and to the coupling  1150 A of the injector by second attachment  1170 B. Subsequently, when the REHUC cylinder is to be removed and a replacement fitted, then the first and second attachments  1170 A and  1170 B are undone, the tubing  1160  removed and then the REHUC cylinder can be pivoted upon the assembly away such that the REHUC cylinder can be removed without potential impact to the injector. 
     Now referring to  FIGS. 13A and 13B  there is depicted a mechanism according to an embodiment of the invention for engaging and disengaging a cylinder within a fluidic system. Referring to  FIG. 13A  there are depicted first to third images  1300 A to  1300 C respectively for a REHUC mechanism according to an embodiment of the invention for engaging and disengaging a cylinder within a fluidic system. Accordingly, first image  1300 A depicts the REHUC cylinder comprising outlet  1310 , upper body portion  1320 , lower body portion  1330  and inlet-drain assembly  1340  together with steam tube comprising coupling  1350 A and tube  1350 B (with a plurality of steam outlets disposed along its length). The steam tube being coupled to the RHUC cylinder outlet  1310  directly rather than via a tubing  1160  in  FIGS. 11A and 11B  respectively. Second and third images  1100 B and  1100 C depict the REHUC mechanism in two different 3D perspective views. 
     Within  FIG. 13B  there are depicted first to third images  1300 D to  1300 F respectively. First image  1300 D being a close-up 3D perspective view of the REHUC cylinder outlet and steam tube coupling depicting the upper body portion  1320  of the REHUC cylinder with outlet  1310  together with the injector comprising coupling  1150 A and tube  1150 B. Second image  1100 E depicts the injector in isolation comprising coupling  1150 A and tube  1150 B whilst third image  1100 C depicts the REHUC cylinder comprising outlet  1310 , upper body portion  1320 , lower boy portion  1330  and inlet  1380 . The inlet  1380  coupling to the inlet-drain assembly  1340  when the REHUC cylinder is mounted to it and positioned. 
     Referring to  FIG. 14A  first and second image  1400 A and  1400 B depict a 3D perspective views of the lower portion of the assembly. First image  1400 A comprising inlet-drain assembly and REHUC cylinder coupled together whilst second image  1400 B depicts only the inlet-drain assembly. In first image  1400 A the REHUC cylinder is depicted only by lower body portion  1320  whereas the inlet-drain assembly comprises a tray  1340 E, a first mounting  1340 A, a fluidic coupler  1340 C and valve controller  1340 D. In second image  1400 B these are also depicted together with second mounting  1340 B and inlet receptacle  1340 F. The inlet receptacle  1340 F being dimensioned to fit around the outer diameter of the inlet of the REHUC cylinder when it is inserted. Fluid (e.g. water) flow into the REHUC cylinder from the source, e.g. water reservoir, during vapour fluid generation (operation of REHUC) or cleaning cycles and fluid flow from the REHUC cylinder during a drain sequence of a cleaning cycle or REHUC removal being via the fluidic coupler  1340 C which is controlled via valve controller  1340 D. The fluidic coupler  1340 C receiving fluid from external fluid system via controller inlet port  1340 G wherein it is coupled to the inlet receptacle  1340 F and therein the inlet  1380  of the REHUC cylinder when mounted under the control of the valve controller  1340 D. The fluidic coupler  1340 C also draining fluid from the REHUC cylinder via the inlet receptacle  1340 F under the control of the valve controller  1340 D wherein the fluid being drained is directed to drain  1340 I of the tray  1340 E via controller outlet port  1340 H. 
     Referring to  FIG. 14B  there is depicted a 3D perspective view of the inlet-drain assembly depicting the controller inlet port  1340 G, drain  1340 I, inlet receptacle  1340 F, valve controller  1340 D, fluidic coupler  1340 C as described and depicted in  FIG. 14A . Also depicted are first mounting  1340 A, which comprises first coupler mount  1410  and first support  1415 , and second mounting  1340 B, which comprises second coupler mount  1420  and second support  1425 . The first and second supports  1415  and  1425  being attached to the tray and allowing insertion/retention of the assembly (comprising controller inlet port  1340 G, inlet receptacle  1340 F, valve controller  1340 D, fluidic coupler  1340 C etc. to the tray) as well as rotation of the assembly relative to the tray. Accordingly, the assembly is vertically and laterally positioned by the heights of the first and second supports  1415  and  1425  and laterally restrained by flexible support  1440  which is pushed aside as the assembly is lowered and slid into first mounting  1340 A. Rotation of the assembly with respect to the tray is prevented in one direction by arm  1430  on the fluidic coupler  1340 C engaging stop  1435  on the base of the tray. Accordingly, the assembly can rotate in one direction. 
     At initial installation of the REHUC cylinder the assembly is rotated away from substantially parallel to the tray, the REHUC cylinder mounted such that the inlet  1380  is within the inlet receptacle  1340 F, and then the assembly with REHUC cylinder rotated till the arm  1430  engages the stop  1435 . As the REHUC cylinder and assembly are rotated the outlet  1310  of the REHUC cylinder engages the coupling  1350 A of the injector. Subsequently, when the REHUC cylinder is to be removed and a replacement fitted, then the REHUC cylinder can be pivoted upon the assembly away such that the REHUC cylinder can be removed without potential impact to the injector. Accordingly, the outlet  1310  automatically engages and disengages the coupling  1350 A of the injector as the REHUC cylinder and assembly are pivoted in contrast to the configuration depicted in  FIGS. 11A to 12B  wherein the connection from the outlet  1110  of the REHUC cylinder to the coupling  1150 A of the injector must be physically made/unmade when the REHUC cylinder is in the correct position. 
     It would be evident that in each assembly configuration depicted within  FIGS. 2A to 14B  with each instance of removal—installation electrical connections are made/unmade which are not explicitly described with respect to embodiments of the invention. These electrical connections can include, but are not limited to, heating element(s), temperature sensor(s), fluid level sensor(s), etc. Within embodiments of the invention these electrical connections may be made discretely one by one, all at once through a connector, in subsets through multiple connectors. Within embodiments of the invention these may be connected/disconnected as a separate step to that of the fluidic connections in the removal/installation process or they may be made concurrently through appropriate electrical connectors supporting insertion/removal of a plug or socket from a socket or plug which may have retention elements that can be engaged/disengaged to allow removal/insertion and maintenance of electrical connections during use. 
     Whilst the cylinders depicted in respect of  FIGS. 2A to 14B  are circular in external geometry at the base it would be evident that other external geometries may be employed including, but not limited to, square, rectangular, hexagonal, and octagonal or a combination thereof. For example, a predominantly circular external geometry may be merged with a square geometry such that edges of the square engage with features within the humidifier aligning the cylinder with the humidifier. Alternatively, such features aligning the cylinder with the humidifier may be disposed further up the body of the cylinder. 
     Whilst the cylinders described and depicted in respect of  FIGS. 2A to 14B  exploit a single inlet-drain connection and a single outlet it would be evident to one of skill in the art that multiple inlets and/or outlets may be employed without departing from the scope of the invention. For example, a single fluid inlet may be employed, e.g. for water, with a steam outlet port and a second outlet port for draining. 
     Whilst the cylinders and embodiments of the invention described and depicted in respect of  FIGS. 2A to 14B  relate to humidification systems it would be evident to one skilled in the art that the concepts may be applied to a variety of other fluid processing and/or fluid management systems including replaceable filters for water purification systems, air conditioning systems, chemical treatments, dehumidification systems, electrostatic purification systems, ultraviolet purification systems, refrigeration systems, chemical systems, heating systems, air conditioning systems, filtering systems, electrical humidifiers, ultrasonic humidifiers, etc. 
     It would be evident to one skilled in the art that the body of the cylinders, inlet port(s), outlet port(s), connectors, fluidic assemblies, system casing, connectors, etc. may be formed from one or more plastics, metals, alloys, glasses etc. according to the functionality of the cylinder, the fluid(s) coupled to the cylinder, the fluid(s) coupled from the cylinder, operating temperature etc. 
     The foregoing disclosure of the exemplary embodiments of the present invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many variations and modifications of the embodiments described herein will be apparent to one of ordinary skill in the art in light of the above disclosure. The scope of the invention is to be defined only by the claims appended hereto, and by their equivalents. 
     Further, in describing representative embodiments of the present invention, the specification may have presented the method and/or process of the present invention as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. As one of ordinary skill in the art would appreciate, other sequences of steps may be possible. Therefore, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. In addition, the claims directed to the method and/or process of the present invention should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the present invention.