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US7A1 - Additive manufactured tube assembly - Google Patents Connect public, paid and private patent data with Additive manufactured tube assembly Info Publication number US7A1 Authority US Grant status Application Patent type Prior art keywords tube assembly void additive tubes Prior art date 2014-07-03 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Pending Application number US14790907 Inventor Joe Ott John J. Shawn Stempinski Stanley J. Funk Dennis M. Moura Lyutsia Dautova Roger O.

Coffey Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) United Technologies Corp Original Assignee United Technologies Corp Priority date (The priority date is an assumption and is not a legal conclusion. Manufacturing of tube assemblies such as those containing tubes within tubes (or concentrically located tubes), as one example, require the manufacture of several individual parts then assembly to create the final product. In some examples, air within an annular void defined between the two concentrically located tubes acts as a thermal insulator for fluid that may be flowing through the inner tube. Sealing of this void (i.e. Complete encapsulation) to enhance the thermal properties of the surrounding air is difficult from a manufacturing perspective and not typically accomplished, and if such were accomplished, it would require yet further parts thus limiting feasibility.

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1 illustrates a fuel nozzle for a gas turbine engine as one, non-limiting, example of an additive manufactured tube assembly 20. The fuel nozzle 20 is part of a combustor 22 that may be annular in shape and concentrically disposed to an engine axis A.

The combustor 22 may further include a bulkhead assembly 24, an outer wall 26, an inner wall 28, and a diffuser case module 34. The outer and inner walls 26, 28 project axially in a downstream direction from the bulkhead assembly 24, and radially define an annular combustion chamber 30 therebetween.

An annular cooling plenum 32 is generally defined radially between the outer diffuser case module 34 and a diffuser inner case 36 of the engine. The bulkhead assembly 24 and walls 26, 28 are located in the cooling plenum 32 immediately downstream from a compressor section 38, and upstream from a turbine section 40 of the engine. The annular bulkhead assembly 24 may extend radially between and is secured to the forward most ends of the walls 26, 28. Assembly 24 generally includes an annular hood 42, a wall or heat shield 44 that defines the axial upstream end of the combustion chamber 30, and a plurality of swirlers 46 (one shown) spaced circumferentially about engine axis A and generally projecting or communicating through the wall 44. A plurality of circumferentially distributed hood ports 48 accommodate a respective plurality of the fuel injectors or nozzles 20 as well as direct compressed air C into the forward end of the combustion chamber 30 through the associated swirler 46. Each fuel nozzle 20 may receive fuel from at least one fuel manifold 50 generally located radially outward of the case module 34. The elongated fuel nozzle 20 may substantially extend longitudinally along a centerline 52 and in a radial inward direction with respect to the engine axis A, through the case module 34 and into the plenum 32.

The centerline 52 and thus the nozzle 20 then bends (i.e. See bend 54) and projects in an axial downstream direction, extending through the hood port 48 and into the swirler 46 where fuel is then dispensed and atomized from the nozzle 20. Referring to FIG. 2, the tube assembly 20 (i.e.

A simplified fuel nozzle in the present example) may have a first or inner tube 56 co-extending with and surrounded by (e.g. Concentrically located) to a second or outer tube 58. The outer tube 58 may be spaced radially outward from the inner tube 56 thereby defining a substantially annular void 60, there-between. Void 60 may generally be sealed (i.e. Completely encapsulated) from the plenum 32 and/or surrounding environment to act as a thermal insulator for any fluid (see arrow 62) flowing through the inner tube 56. To enhance the thermal insulating properties, the void 60 may be under a negative atmospheric pressure and may further contain an inert gas such as nitrogen (N2), Argon or any other gas compatible with the material composition of the surrounding structures.

Although liquid fuel in the present example, it is contemplated and understood that the fluid 62 may also be a gas, liquid such as oil and water, or even a solid material (e.g. Powder) capable of flow. It is further understood that the term “tube” also refers to conduits, casings, pipes and other structures capable of fluid flow and/or encasement of a thermal insulating gas. Such fuel nozzles 20 flowing liquid fuel and operating in hot environments like the plenum 32 where temperatures may exceed 1,700 degrees Fahrenheit (927 degrees Celsius) are susceptible to fuel varnishing and coking due to high temperatures of more traditional fluid bearing tube(s). This coking can lead to decreased flow capacity of the nozzle and decreased quality of fuel delivery.

To manage the temperature of the tube 56 and thus the fluid or fuel 62 and prevent coking, the void 60 is employed to break the thermal conduction path from the hot external environment to the inner tube 56. It is further contemplated and understood that other portions of a fuel delivery system of the gas turbine engine may employ the same type of assembly 20. For instance, the fuel manifold 50 may be susceptible to similar coking issues leading to unintentional mal-distribution of fuel in the system, and thus benefit from the same means of insulating a tube bearing fluid flow. The inner and outer tubes 56, 58 may each have at least one respective bend 64, 66 that generally corresponds with the bend(s) 54 of the centerline 52 and such that the void 60 is generally maintained (i.e. Spacing between tubes).

The bends 64, 66 may be such where longitudinal insertion of the inner tube 56 into the outer tube 58 (and if the tubes were separate pieces) is not possible. With such fitting difficulties, additive manufacturing the tubes 56, 58 generally together and/or simultaneously is advantageous. As an example of such insertion difficulties that the additive manufacturing process resolves, the outer tube 58 may be lacking any line-of-site through the tube and the inner tube 56 is too large to freely fit completely into the outer tube 58. More specifically, the outer tube 58 may have an inner diameter (see arrow 68) and two substantially straight portions 70, 72 projecting outward from respective opposite ends of the bend 66. The straight portions 70, 72 and have respective longitudinal lengths (see respective arrows 74, 76) that are substantially longer than the inner diameter 68. The inner tube 56 may similarly have substantially straight portions 78, 80 projecting outward from respective ends of the bend 64.

The straight portions 78, 80 may have respective longitudinal lengths (see respective arrows 82, 84) that are each longer than the inner diameter 68 of the outer tube 58. In such a dimensional relationship, fitting of the inner tube 56 into the outer tube 58 may be difficult if not impossible.

Alternatively, each tube may have multiple bends along the centerline 52 that may be directed in different directions, this multiple bend configuration would also make fitting or insertion of the inner tube 56 into the outer tube 58 difficult, if not impossible. The fuel nozzle 20 may further have a pressure release or maintenance feature 86 supported by and communicating through the outer tube 58 for creating and maintaining the vacuum or negative atmospheric pressure in the void 60. The feature 86 may further assist in restoring the vacuum after a repair procedure or rupture of the outer tube 58. The feature 86 may be additive manufactured as one unitary piece to the assembly or may be adhered and/or brazed to the outer wall 58 after additive manufacturing is completed. The negative atmospheric pressure may be about three pounds per square inch (21 kPa). The fuel nozzle 20 may include at least one support structure 88 for properly locating the inner tube 56 with respect to the outer tube 58.

The support structure 88 may be generally located at one or both of the distal ends of the fuel nozzle 20 (e.g. The distal joinder of the inner tube 56 to the outer tube 58. Alternatively, or in addition thereto, the support structure 88 may be a plurality of pylons that traverse the void 60 and connect the inner tube 56 to the outer tube 58.

Such pylons are spaced axially and circumferentially with respect to the centerline 52, may be additively manufactured as one unitary piece to both of the tubes 56, 58, and are minimal in mass to limit thermal conduction from the outer tube to the inner tube. The number of pylons are dictated by the structural needs of the fuel nozzle or assembly 20 and may be about 0.004 inches (0.102 millimeters) in diameter, or the minimal production capability of the additive manufacturing process. Referring to FIG. 3, a second embodiment of a tube assembly is illustrated wherein like elements have like identifying numerals except with the addition of a prime symbol. The tube assembly 20′ of the second embodiment has a support structure 88′ that is generally of a honeycomb orientation. The honeycomb may function to divide the annular void 60′ into a plurality of individually sealed void portions 90. It is further contemplated and understood that use of the term “honeycomb” may include a vascular and/or lattice structure, strut configurations, and/or a generally porose material.

Yet further, the density of the honeycomb may be increased where additional support strength is needed. The supports may also be solid or organic in shape. Referring to FIG. 4, a third embodiment of a tube assembly is illustrated wherein like elements have like identifying numerals except with the addition of a double prime symbol. The tube assembly 20″ of the third embodiment has a support structure 88′ that is girder-like. That is, a plurality of pylons may be paired such that the ends of two pylons 92, 94 and the inner tube 56 connect to one-another at a junction 96 and the opposite ends of the respective pylons 92, 94 are spaced from one-another and individually connect to the outer tube 58.

In this way, minimal contact is made with the inner tube 56, thereby reducing thermal conduction. Examples of additive manufacturing processes include, but are not limited to, laser powder bed, electron beam melting, free form fabrication laser powder deposition and electron beam wire deposition, amongst others. Additive manufacturing systems include, for example, Additive Layer Manufacturing (ALM) devices, such as Direct Metal Laser Sintering (DMLS), Selective Laser Melting (SLM), Laser Beam Melting (LBM) and Electron Beam Melting (EBM) that provide for the fabrication of complex metal, alloy, polymer, ceramic and composite structures by the freeform construction of the workpiece, layer-by-layer. The principle behind additive manufacturing processes may involve the selective melting of atomized precursor powder beds by a directed energy source, producing the lithographic build-up of the workpiece. The melting of the powder occurs in a small localized region of the energy beam, producing small volumes of melting, called melt pools, followed by rapid solidification, allowing for very precise control of the solidification process in the layer-by-layer fabrication of the workpiece. These devices are directed by three-dimensional geometry solid models developed in Computer Aided Design (CAD) software systems. One example of an additive manufacturing system 100 capable of manufacturing the tube assembly 20 is schematically illustrated in FIG.

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The additive manufacturing system 100 has a build table 102 for supporting the assembly 20 and generally holding a powder bed 104, a particle spreader, wiper or sprayer 106 for spreading, spraying or otherwise placing the powder bed 104 over the manufacture portion of the assembly 20 and build table 102, an energy gun 108 for selectively melting regions of a layer of the powder bed, a powder supply hopper 110 for supplying powder to the spreader 106, and a powder surplus hopper 112. The additive manufacturing system 100 may be constructed to build the assembly 20, or any portions thereof, in a layer-by-layer fashion. The powder bed 104 is composed of the same material composition as the assembly being additively manufactured. A controller 114 of the additive manufacturing system 100 may include a computer 116 for entering data and that contains software for programming automated functions in accordance with inputted three dimensional computer aided design models of the assembly 20. The model may include a breakdown of the assembly 20 into a plurality of slices 118 additively built atop one-another generally in a vertical or z-coordinate direction.

Each solidified slice 118 corresponds to a layer 120 of the powder bed 104 prior to solidification and each layer 120 is placed on top of a build surface 122 of the previously solidified slice 118. The controller 114 generally operates the entire system through a series of electrical and/or digital signals 124 sent to the system 100 components. For instance, the controller 114 may send a signal 124 to a mechanical piston 126 of the supply hopper 110 to push a supply powder 128 upward for receipt by the spreader 106. The spreader 106 may be a wiper, roller or other device that pushes (see arrow 130) or otherwise places the supply powder 128 over the build surface 122 of the assembly 20 (or any portion thereof) by a pre-determined thickness that may be established through downward movement (see arrow 132) of the build table 102 controlled by the controller 114.

Any excess powder 128 may be pushed into the surplus hopper 112 by the spreader 106. 100481 Once a substantially level powder layer 120 is established over the build surface 122, the controller 114 may send a signal 124 to the energy gun 108 that energizes a laser or electron beam device 134 and controls a directional mechanism 136 of the gun 108. The directional mechanism 136 may include a focusing lens that focuses a beam (see arrows 138) emitted from device 134 which, in-turn, may be deflected by an electromagnetic scanner or rotating mirror of the mechanism 136 so that the energy beam 138 selectively and controllably impinges upon selected regions of the top layer 120 of the powder bed 104.

The beam 138 moves along the layer 120 melting region-by-regions of the layer 120 at a controlled rate and power, melting each region into pools that then form with, or sinter to, the adjacent build surface 122, solidify, and ultimately form the next top slice 118. The process then repeats itself where another powder layer 120 is spread over the last solidified slice 118 and the energy gun 108 melts at least a portion of that layer along with a meltback region (i.e. Sintering) of the previously solidified slice 118 to form a uniform and homogeneous assembly 20, or portion thereof. It is understood that relative positional terms such as “forward,” “aft,” “upper,” “lower,” “above,” “below,” and the like are with reference to the normal operational attitude and should not be considered otherwise limiting. It is also understood that like reference numerals identify corresponding or similar elements throughout the several drawings.

It should be understood that although a particular component arrangement is disclosed in the illustrated embodiment, other arrangements will also benefit. Although particular step sequences may be shown, described, and claimed, it is understood that steps may be performed in any order, separated or combined unless otherwise indicated and will still benefit from the present disclosure. The foregoing description is exemplary rather than defined by the limitations described. Various non-limiting embodiments are disclosed; however, one of ordinary skill in the art would recognize that various modifications and variations in light of the above teachings will fall within the scope of the appended claims. It is therefore understood that within the scope of the appended claims, the disclosure may be practiced other than as specifically described.

For this reason, the appended claims should be studied to determine true scope and content. Claims ( 20). The method of manufacturing the tube assembly set forth in claim 18, wherein the tube assembly is modeled into a plurality of slices each slice having a portion of the first and second tubes, and a first slice of the plurality of slices is manufactured before proceeding to the manufacture of a next successive slice of the plurality of slices.

RELATED COPENDING APPLICATIONS Co-pending U.S. 11/382,114 filed May 8, 2006 and titled “Bottle Cap And Method Of Use With A Liquid Dispensing Apparatus And System” (“the Bottle Cap Invention”) is hereby incorporated by reference in its entirety into this disclosure, as is U.S. 11/468,342, filed Aug. 30, 2006 and titled “Liquid Dispensing Apparatus And System” (“the Liquid Dispensing Invention”). BACKGROUND OF THE INVENTION The present invention generally relates to a bottled water cooler and, more specifically, to a water cooler that loads bottles at a position below the dispensing spout, in a bottom portion of the cooler. SUMMARY OF THE INVENTION In a preferred embodiment, a liquid dispensing apparatus such as a water cooler is provided, which includes a dispenser for dispensing liquid to a user, and a liquid container such as a water bottle located below the dispenser. The liquid container may be removably attached to a pivoting cradle engaging the liquid container.

The cradle may be permitted to pivot, such as about an axis located adjacent an exit location for liquid within the liquid container. The exit location may be the neck of a water bottle, for example. Alternatively, the cradle may pivot about an axis parallel to the longitudinal axis of the liquid dispensing apparatus. A filling device, such as a skirt for supporting the water bottle and an upstanding hollow feedstock or probe, may be located below the liquid container, for engaging the liquid container (such as for engaging a bottle cap engaged to a water bottle) in fluid communication with a reservoir(s), such as cold and hot water tanks in the water cooler. Dispensing of the liquid from the dispenser spout, for example, may be controlled by a manually accessible push-button located adjacent the dispenser. Preferably, pivoting of the cradle engaged to the liquid container closes the water cooler door and also causes the liquid container to automatically be placed in fluid communication with the filling device. A PCB or other on-board computer, solenoid valve(s), temperature sensors and one or more pumps may be provided in electrical communication with the hot and cold tanks, enabling a user to indirectly control dispensing of hot, room-temperature and/or cold water or other beverages.

A device for boiling water within the hot tank may also be provided. Devices, such as an insta-boil sensor, venting valve(s) and emergency reservoir, may also be provided for removing excess water and/or vapor created by boiling water and for storing this excess water and/or vapor in the reservoir.

One or more baffles may be associated with the cold and/or hot tanks. A method for dispensing a liquid from a liquid dispensing apparatus (e.g., a water cooler) also forms part of the present invention.

In this method, a dispenser is provided for dispensing the liquid to a user, and a liquid container is also provided, located below the dispenser and removably attachable to a pivoting cradle engaging the liquid container. The liquid container is engaged to the cradle, and the cradle is then pivoted about a pivot device, such as a skirt/probe combination, which may be located below the liquid container. The pivot axis may be generally perpendicular or generally parallel to a longitudinal axis of the dispensing apparatus.

If generally perpendicular, the pivot axis may be located adjacent an exit location (e.g., a bottle neck) for liquid within the liquid container, so that the liquid container's neck faces down. The step of pivoting the cradle preferably causes the liquid container to be placed in automatic fluid communication with the filling device. BRIEF DESCRIPTION OF THE DRAWINGS The novel features which are characteristic of the invention are set forth in the appended claims. The invention itself, however, together with further objects and attendant advantages thereof, can be better understood by reference to the following description taken in connection with the accompanying drawings, in which: FIG. 1 is a front and side perspective view of a bottom load water cooler according to one preferred embodiment of the present invention, shown during loading of the water bottle; FIG. 2 is an enlarged, partial sectional and partial perspective view of the skirt for partially supporting the water bottle and the probe for penetrating and being in fluid communication with the water bottle, of the preferred embodiment of the present invention; FIG.

3 is a side perspective view of the bottom load water cooler shown in FIG. 4 is a sectional view showing the neck of the water bottle engagement to the probe of the water cooler; FIG. 5 is a partial (lower) front and side perspective view of the bottom load water cooler shown in FIGS. 1 and 3; FIG. 6 is a partial side and front perspective view of the bottom load water cooler of FIG. 1, shown during the bottle loading process; FIG.

7 is a partial, enlarged, side perspective view of FIG. 8 is a view similar to FIG. 7, showing the water bottle in a fully raised condition, engaged and in fluid communication with the water cooler; and FIG.

9 is a schematic view showing one flow diagram useful with a preferred embodiment bottom loader water cooler of the present invention. The components in the drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the present invention. In the drawings, like reference numerals designate corresponding parts throughout the several views. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Set forth below is a description of what are believed to be the preferred embodiments and/or best examples of the invention claimed.

Future and present alternatives and modifications to this preferred embodiment are contemplated. Any alternatives or modifications which make insubstantial changes in function, in purpose, in structure, or in result are intended to be covered by the claims of this patent. Referring first to FIGS. 1, 3 and 5- 8, in a preferred embodiment of the present invention, a bottom load water cooler, generally designed by reference numeral 10, is shown. Bottom load water cooler 10 may include upstanding frame 11, an alcove 12 for liquid dispensing, a lower compartment 13, and a base 14.

Lower compartment 13 may be opened such as by opening pivoting door 17 to accommodate the entry and exit of a water bottle 15, such as a 5-gallon water bottle. Condenser coils 27 may be located behind the engaged water bottle. Bottle 15 may include graspable handle 18. A cradle may include structural members 22, such as bent metal tubes, attached to door 17 via retaining members or flange 23, such as a cylindrical metal flange 23. Clasps 24 may be attached to flange 23.

Metal struts (spacers) 19 may be used to secure the cradle to the door. Once the water bottle has been secured to cradle 20, the door may be pivoted upward and closed in the direction of the arrows. The door and cradle should be made of sufficient rigidity and strength to support the water bottle weight. The pivot point for the door may be located at an end portion of the cradle, and may rest (directly or indirectly) on the base and transfer the load/weight to the base during door closure, as further explained below. The pivoting point for the door/cradle is preferably located at an end portion of cradle 20, and may lie adjacent and/or on base 14 and transfers the load/weight to the base.

To use the bottom load cooler of the present invention, a user may roll or carry a bottle containing liquid such as water to a front end of the open door/cradle from a storage area, place the bottle upright, tip over the bottle toward the door/cradle, and push the bottle into the direction of the bottom of the door/cradle. The bottle may be permitted to glide smoothly onto the cradle and engage the dispensing interface device, described below. A variety of retaining devices, such as flexible rubber, plastic or metal clasps (shown) and/or a bungee cord (not shown) may be used if desired to secure the bottle's bottom area (opposite the neck) to the cradle, while the bottle's neck area has been secured to a filling device such as a hollow probe, as discussed below. It will be appreciated that because the lifting point for door closure is preferably located at the distal end of the door/cradle opposite the bottle neck, a user may only need to lift about half of the bottle weight to close the bottle/cradle due to the leverage advantage. Referring to FIG. 5, a compressor 27 a for the POU unit may be provided. A conventional drip tray (not shown) may be provided below dispenser spout 121 ( FIG.

Referring now to FIGS. 2 and 4, a preferred dispensing interface device is described. A water cooler base 50 (see FIG.

6) may be secured to an upstanding feedstock or probe 60. Probe 60 may have a probe base 32 and threaded proximal portion 31 for connection to an upper reservoir 450 (see FIG. A skirt or bottle guard 35 may surround the probe (see also FIGS. 6-8), designed to carry the weight of the bottle via bottle neck 40 when the cradle is pivoted to an upright condition such that probe 60 is placed in fluid communication with bottle cap 45.

A conventional bottle cap may be employed. However, preferably, a bottle cap is employed such as shown in FIG.

2 of the Bottle Cap Invention, for example. In this embodiment, a cap plug 225, having an attached tether 226 and ring 228, is also provided. Ring 228 may be placed over the outer surface of inner wall 227.

Cap plug 225 may then be inserted within inner wall 227 of bottle cap 40. A rib on the outer surface of cap plug 225 may be designed to provide a liquid-tight seal with an engaging lip on inner wall 227. Another seal occurs at cap sealing fin 236 against bottle cap 40.

During dispensing, liquid may be permitted to flow from the liquid source down through the bottle neck and bottle cap 40, down through cap plug 225 (a pinhole, not shown, may be provided in the closed top for this purpose), through hollow probe 222. When the liquid source (e.g., water bottle) is empty, and is removed from the probe, bottle cap 40 with cap plug 225 intact may be removed as an integral piece from the probe, for example. A conventional probe may be used to engage the water bottle, such as disclosed in U.S.

5,289,854 to Baker et al., while bottle caps of the type disclosed in U.S. 5,232,125 to Adams and U.S. 5,957,316 to Hidding et al., may be employed. The disclosures of these three patents are hereby incorporated by referenced herein in their entirety. However, a probe providing separate air and water flow paths 60 a, 60 b may be preferred ( FIG.

7), such as disclosed in the Liquid Dispensing Invention. Referring now to FIG. 9, one preferred liquid flow path for the bottom load water cooler of the present invention is shown. In this embodiment, cold tank 115 and hot tank 117 are positioned above water bottle 15.

In order to fill and prime the tanks, water may be caused to flow along conduit A in the direction of the arrows from bottle 15, under pressure from water pump 113, into cold tank 115. Air flowing from the atmosphere through breathing check valve 137, preferably positioned close to the water bottle, may flow into bottle 15, avoiding air-lock and allowing continued dispensing. A vent solenoid valve 141 may be positioned at the top of cold tank 115, normally open, for switching the system open and closed, to render the cold tank an open system when necessary. Near valve 141, an emergency safety valve 143 may be employed to release the pressure inside the system in case the vent solenoid valve is malfunction.

Cold tank temperature sensor 119 and hot tank temperature sensor 123 may be used to monitor and/or maintain temperatures in the tanks. Water sensor 123 may be used along with emergency reservoir 124 to send water along conduit D from the cold water tank to prevent overflows. 3-way solenoid 118 communicates along the flow path with spout 121, so that cold water may be provided from conduit B while hot water may be provided from conduit C.

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Baffle 127 may be provided within the tanks. Insta-boil sensor 129 may be located adjacent the baffle and within cold tank 115.

Bottle sensor 131 may be used to sense bottle installation, triggering the start-up procedure. In practice, and still referring to FIG. 9, as an example, a user may depress a water dispensing button, allowing a PCB (not shown) to transmit a signal to close vent solenoid valve 141 to render the system closed. 3-way solenoid valve 118 opens conduit B or C and water pump 113 starts pumping water up into cold tank 115, and dispenses water from spout 121.

When the user releases the water dispensing button, the PCB transmits a signal to open vent solenoid valve 141 and render the system an open system. 3-way solenoid valve is closed to stop water dispensing, and water pump 113 ceases pumping. Using the insta-boil feature (e.g., an electric dispensing pot available from Zojirushi, Japan), the hot tank can boil water when desired by the user; excessive water/vapor generated by the boiling function may be bled from the system using the vent solenoid valve 141, emergency safety valve 143 and emergency reservoir 124. The above description is not intended to limit the meaning of the words used in the following claims that define the invention. Other systems, methods, features, and advantages of the present invention will be, or will become, apparent to one having ordinary skill in the art upon examination of the foregoing drawings, written description and claims, and persons of ordinary skill in the art will understand that a variety of other designs still falling within the scope of the following claims may be envisioned and used. For example, the cradle may pivot along an axis either generally parallel or generally perpendicular to the longitudinal axis of the water cooler frame. Further, the cradle may, but need not be, attached to the door of the unit.

Also, consumable liquids other than water, such as but not limited to carbonated beverages, may be dispensed. It is contemplated that these or other future modifications in structure, function or result will exist that are not substantial changes and that all such insubstantial changes in what is claimed are intended to be covered by the claims. The following terms are used in the claims of the patent as filed and are intended to have their broadest meaning consistent with the requirements of law. Where alternative meanings are possible, the broadest meaning is intended.

All words used in the claims are intended to be used in the normal, customary usage of grammar and the English language. Patent Citations Cited Patent Filing date Publication date Applicant Title Feb 23, 1915 Sep 25, 1917 Charles Doering Jr Water-dispensing device. Oct 26, 1915 Dec 4, 1917 George D Pogue Container for drinking-water. Non-Patent Citations Reference 1. Bottom Loading Water Dispenser, by Shenzhen Angel Aquaworks Co., Ltd., China; Dec. 14, 2004; 2 pages. 2 Ebac Eddy Water Cooler for the Home: Discount Store UK.; Ebac Eddy is a Refreshing New Way to Enjoy a Health Lifestyle; 3 Home Spring Photos (14 images); 4 Latest News-Ebac Limited-Group Website.

Manufacturer of dehumidifiers and water c.; Ebac Group; Latest News; Ebac enters point of use market; 5 Watercoolers-Ebac Limited-Group Website. Manufacturer of dehumidifiers and water.; Ebac Group; Watercoolers; http://www.ebacgroup.com/?page=21. Referenced by Citing Patent Filing date Publication date Applicant Title. Oct 8, 2007 Oct 18, 2011 Scott David Green Slide valve for a bottle. Mar 26, 2008 May 15, 2012 Matthew Carrig Apparatus and system for liquid dispensing and storage.

Nov 19, 2009 Jun 18, 2013 Honda Motor Co., Ltd. Cassette gas cylinder mounting structure. Jan 9, 2013 Dec 9, 2014 E. Du Pont De Nemours And Company Device for dispensing pourable materials. Sep 22, 2006 Jun 21, 2007 C. Beverage dispenser. Mar 26, 2008 Oct 1, 2009 Matthew Carrig Apparatus and system for liquid dispensing and storage.

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Sep 4, 2008 Jan 14, 2010 Danene Jaffe Beverage Preservation, Chilling, and Dispensing System. Nov 19, 2009 May 27, 2010 Honda Motor Co., Ltd.

Cassette gas cylinder mounting structure. Nov 14, 2013 May 14, 2015 MTN Products, Inc Energy saving hot tank for water cooler. Oct 21, 2014 May 21, 2015 Mtn Products, Inc.

Energy saving hot tank for water cooler.