WO2023058055A1 - Additive delivery device for a flowing liquid and methods of operation - Google Patents

Abstract

An additive delivery device for imparting a carrier vapor into a flowing liquid and methods of operations. The device comprising a housing including an endcap having an aperture, a bottom portion including a fluid transport tube, and a Venturi ejector in-line therebetween. A first tube extending into the housing interior is connected to the Venturi ejector, and a second tube extends within the interior to the exterior, establishing communication with atmospheric air outside of the device. A volatile fluid within the device interior fills a portion of the interior, such that the volatile fluid does not enter the first tube. The volatile fluid produces carrier vapors upon establishment of a pressure differential within the Venturi ejector and the housing interior, and the carrier vapors are capable of entering a flowing liquid between a fluid ingress and a fluid egress as a function of flow rate to a fluid delivery port.

Description

ADDITIVE DELIVERY DEVICE FOR A FLOWING LIQUID AND METHODS OF OPERATION

Background Of The Invention

1. Field of the Invention

[0001] The invention is related to devices for imparting additives to flowing liquid. Such applications include, but are not limited to, those used for fluid purification systems. Consumers often look for better taste and smell in liquids such as water without the need to introduce significant quantities of chemicals such as sugars, salts, flavoring compounds, and the like to the liquid. The addition of these chemicals in any appreciable amount often adds carbohydrates or even fats to the liquid, which is undesirable. The present invention is directed to an apparatus and method of adding a treatment to a flowing liquid, which could be used for adding better taste to water and other flowing liquids by adding infinite decimal quantities of natural or synthetic flavors, fragrances, nutrients or other additives.

2. Description of Related Art

[0002] Due to regulations on water purification in certain countries to limit water waste during filtration, the use of reverse osmosis (RO) water purifiers is becoming increasingly restricted, thereby limiting uses of RO systems for water purification. For example, the National Green Tribunal of India has directed the Ministry of Environment to issue a ban use of all RO purifiers in situations where the total dissolved solids (TDS) of an inlet source is less than or equal to 500mg/L. This is the result of petitioning that unregulated, indiscriminate use of RO systems is leading to huge wastage of water.

[0003] In situations where these RO systems cannot be used, ultra-violet filtration (UV) may be substituted. Though substitutable, UV systems are not without their shortcomings. Namely, UV systems are used for microbiological disinfection and do not affect the TDS of a fluid source. As a result of the higher TDS in the fluid compared to RO systems, a perceptible taste will exist in the water that is often distasteful to consumers. Therefore, a need exists to create a water flavor or aroma treatment apparatus that can mask undesirable flavor or smell when a higher TDS is present in potable water for consumers, such as when RO systems cannot be used. A consequence of establishing a delivery system for flowing liquid are the applications of the delivery system for treating the liquid other than for taste and odor. Such treatments are performed in-situ, with quantities imparted as a function of the flowing liquid.

Summary of the Invention

[0004] Bearing in mind the problems and deficiencies of the prior art, it is therefore an object of the present invention to provide a device for adding consistent perceptible flavor or aroma to drinking water for water purification systems.

[0005] Yet another object of the present invention is to provide a means to impart desired taste, flavor, or aroma to flowing liquid, such that any undesirable taste, smell, or flavor within the liquid is masked.

[0006] A further object of the present invention is to provide a system to impart desired taste, smell, or flavor which can readily be used in residential and commercial drinking water purification units, including refrigeration units.

[0007] It is another object of the present invention to provide a method and apparatus for imparting perceptible flavor or aroma to flowing fluid without the aid of any electromechanical device and without directly dissolving additive-bearing substances into the fluid.

[0008] It is a further object of the present invention to impart perceptible flavor or aroma to running water as a function of the flow of liquid, such that the flavor inducement is substantially constant over a volume of liquid.

[0009] It is yet another object of the present invention to treat a flowing liquid with an additive utilizing an in-situ treatment process, imparted as a function of the flowing liquid velocity.

[0010] Still other objects and advantages of the invention will in part be obvious and will in part be apparent from the specification. [0011] In one aspect, the present invention is directed to an additive delivery device for imparting a carrier vapor into a flowing liquid comprising: a housing having a top portion including an endcap having an aperture, a bottom portion including a fluid transport tube having a fluid ingress, a fluid egress, and a Venturi ejector in-line therebetween; a first tube having a first end connected to the Venturi ejector, the first tube extending within an interior portion of the housing and having a predetermined height, the first tube having a second end within the interior portion containing an opening; a second tube located within the interior portion of the housing and extending therein, the second tube having a first end located at a bottom region of the interior portion of the housing, and a second end in fluid communication with the aperture on the endcap such that the interior portion of the housing is in fluid communication with atmospheric air outside of the housing; and a volatile fluid within the bottom region of the interior portion of the housing, the volatile fluid filling the interior portion up to an amount less than the height of the first tube, such that the volatile fluid does not enter the first tube. The volatile fluid may produce carrier vapors upon establishment of a pressure differential within the Venturi ejector and the interior portion of the housing, the carrier vapors capable of entering the flowing liquid between the fluid ingress and the fluid egress as a function of flow rate.

[0012] The volatile fluid may comprise volatile essential oils, microbiological interception agents, vitamins, nutrients, or any combination thereof. The additive delivery device aperture may comprise a high efficiency particulate filter. The second tube and/or the first tube may comprise a unidirectional valve. The bottom region of the additive delivery device may comprise a tapered portion. The additive delivery device may be integrated with a refrigerator water delivery line. The device may comprise a fluid filtration cartridge including fluid filter media, the fluid filtration cartridge proximate the additive delivery device and in fluid communication therewith. The device may achieve a degree of concentration (V_conc) of the carrier vapors within the fluid according to the following formula: V_conc⁼ f(P_Vac, Piw, D_ven); where V_conc is the concentration of carrier vapors within the flowing liquid, P_vac is the vacuum in terms of pressure (mm Hg), Pi_W is the pressure of the fluid (kg/cm²), and D_ven is the change in cross-sectional area of the Venturi ejector (m²). [0013] In another aspect, the present invention is directed to a fluid-treatment system for imparting a carrier vapor into a flowing liquid comprising a Venturi manifold comprising a manifold housing having a fluid ingress, a fluid egress, and a Venturi ejector therebetween; a replaceable delivery cartridge comprising a housing having a first end including an end cap having an aperture therethrough, a second end having an aperture to establish fluid communication with the Venturi ejector, an air entry tube having a first end in communication with the end cap aperture, a second end within a bottom portion of the interior portion of the delivery cartridge, and a length therebetween, and an air carrier tube having a first end in communication with the second end aperture, a second end within the interior portion of the delivery cartridge, and a length therebetween; a volatile fluid within the bottom portion of the interior portion of the delivery cartridge, the volatile fluid filling the interior portion of the delivery cartridge to an initial predetermined volume, the volume establishing a fluid level at a height within the interior portion less than a height of the air carrier tube second end; wherein the volatile fluid produces carrier vapors upon establishment of a pressure differential within the Venturi ejector and the interior portion of the housing, the carrier vapors capable of entering the flowing liquid between the fluid ingress and the fluid egress as a function of flow rate.

[0014] The aperture of the fluid-treatment system may comprise a high efficiency particulate filter. The second tube and/or the first tube may comprise a unidirectional valve. The system may be integrated with a refrigerator water delivery line, a sink delivery line, or shower water delivery line. The system may be integrated with a water treatment system comprising a carbon filter, a UV chamber, an RO filter, a pressure tank, or any combination thereof. The fluid-treatment system may further comprise a bypass manifold and/or bypass valve. The system may achieve a degree of concentration (V_conc) of the carrier vapors within the fluid according to the following formula: V_conc⁼ f(Pvac, Piw, D_ven); where V_conc is the concentration of carrier vapors within the flowing liquid, P_vac is the vacuum in terms of pressure (mm Hg), P_JW is the pressure of the fluid (kg/cm²), and D_ven is the change in cross-sectional area of the Venturi ejector (m²).

[0015] Yet another aspect of the present invention is to provide a method of imparting a carrier vapor into a flowing liquid comprising directing a flowing liquid along a flow path comprising a fluid ingress, a fluid egress, and a Venturi ejector therebetween; establishing a vacuum force at the Venturi ejector, such that the vacuum force is established within a replaceable delivery cartridge housing in fluid communication with the Venturi ejector, the delivery cartridge housing comprising an interior chamber; pulling atmospheric air from an exterior surface of the housing into the housing via a second tube, causing atmospheric air to form bubbles within a volatile fluid disposed within a bottom portion of the interior chamber, wherein the bubbles contain a portion of the volatile fluid as a vapor therein; filling the interior chamber with the vapors of the volatile fluid; and pulling the vapors from the housing interior chamber into the flowing liquid via the Venturi ejector, wherein the vapors will impart a flavor and/or aroma onto the flowing liquid.

[0016] Still another aspect of the present invention is to provide a replaceable additive delivery cartridge for imparting a carrier vapor into a flowing liquid comprising a housing having a top portion and a bottom portion, the top portion including an endcap having an aperture; a first tube having a first end having a first opening for connection with a manifold having a Venturi ejector, a second end within an interior portion of the housing, the second end including an opening, and a length therebetween; a second tube located within the interior portion of the housing having a first end located in a bottom region of the interior portion, a second end in communication with the aperture on the endcap, and a length therebetween, the aperture on the endcap in communication with atmospheric air on an exterior of the housing; and a volatile fluid within the bottom region of the interior portion of the housing, the volatile fluid filling the interior portion a volume having a distance less than distance a distance to the first tube opening; wherein the volatile fluid is capable of producing vapors upon establishment of a vacuum force within the Venturi ejector, the vapors capable of entering the flowing liquid between the fluid ingress and the fluid egress through the first tube.

[0017] The second tube and/or first tube of the delivery cartridge may comprise a unidirectional valve. The bottom region of the cartridge may comprise a tapered portion. The cartridge may be capable of insertion within a sump housing comprising at least one stanchion for fluid communication with the manifold Venturi ejector. [0018] Another aspect of the present invention is to provide an additive delivery system for imparting a carrier vapor into a flowing liquid comprising a moveable sump member having an interior portion, a bottom portion including at least one stanchion port, and a top portion including an endcap; a plurality of vapor delivery cartridges within the sump member interior portion, each of the plurality of vapor delivery cartridges comprising: a replaceable cartridge having a cartridge housing with a top portion and a bottom portion, the top portion including an endcap having an aperture, a first tube having a first end having a first opening for fluid communication with the at least one stanchion port upon insertion of the cartridge housing into the sump member interior portion, a second end within an interior chamber portion of the housing, the second end including an opening, and a length therebetween, a second tube located within the interior chamber portion of the housing having a first end located in a bottom region of the interior chamber portion, a second end in communication with the aperture on the endcap, and a length therebetween, the aperture on the endcap in communication with atmospheric air on an exterior of the cartridge housing, and a volatile fluid within the bottom region of the interior chamber portion of the housing, the volatile fluid filling the interior chamber portion a volume having a distance less than distance a distance to the first tube opening; and a manifold comprising a manifold housing having a fluid ingress, a fluid egress, and a Venturi ejector therebetween; wherein a one of the plurality of vapor delivery cartridges are capable of selection via the moveable sump member such that fluid communication between the at least one stanchion port, the one of the plurality of vapor delivery cartridges, and the Venturi ejector is established and wherein the volatile fluid produces carrier vapors upon establishment of a pressure differential within the Venturi ejector and the interior portion of the housing, the carrier vapors capable of entering the flowing liquid between the fluid ingress and the fluid egress as a function of flow rate.

[0019] The moveable sump member may be capable of rotational movement. The at least one stanchion port may further comprise a valve. In some embodiments, the moveable sump member may comprise a plurality of stanchion ports. Each of the plurality of vapor delivery cartridges may include a septum on the endcap such that the volatile fluid in each of the plurality of vapor delivery cartridges is refillable. Brief Description of the Drawings

[0020] The features of the invention believed to be novel and the elements characteristic of the invention are set forth with particularity in the appended claims. The figures are for illustration purposes only and are not drawn to scale. The invention itself, however, both as to organization and method of operation, may best be understood by reference to the detailed description which follows taken in conjunction with the accompanying drawings in which:

[0021] Fig. 1 is a cross-sectional plan view of the additive delivery device of the present invention;

[0022] Fig. 2 is a cross-sectional plan view of an embodiment of the additive delivery device of the present invention;

[0023] Fig. 3A is a cross-sectional plan view of an embodiment of the additive delivery device of the present invention;

[0024] Fig. 3B is a cross-sectional side view of the embodiment of the additive delivery device in Fig. 3 A;

[0025] Fig. 4 is a cross-sectional plan view of an embodiment of a Venturi manifold and additive delivery cartridge of the present invention;

[0026] Fig. 5 is a graph showing the relationship between inlet pressure and the vacuum observed of one or more embodiments of the additive delivery device of the present invention;

[0027] Fig. 6 is a cross-sectional plan view of an embodiment of the additive delivery device of the present invention used in-line with a flowing liquid source;

[0028] Fig. 7 is a cross-sectional plan view of the additive-delivery device of the present invention used in-line with a flowing liquid source; [0029] Fig. 8 is a schematic view of the additive delivery device of the present invention used with a RO filter;

[0030] Fig. 9 is a cross-sectional side view of the additive delivery device of an embodiment of the present invention;

[0031] Fig. 10 is a top plan view of an additive delivery device presenting four different additives or treatments for the flowing liquid;

[0032] Fig. 11 is a schematic view of an embodiment of multiple additive delivery devices working in parallel;

[0033] Fig. 12 is a schematic view of an embodiment of the additive delivery device of the present invention used in combination with a filtration system;

[0034] Fig. 13 is a schematic view of an embodiment of the additive delivery device of the present invention used in combination with a refrigerator filtration system;

[0035] Fig. 14 is a schematic view of an embodiment of an additive delivery device of the present invention used in combination with a refrigerator filtration system;

[0036] Fig. 15A is a top plan view of a fluid bypass manifold for use with the additive delivery device of an embodiment of the present invention;

[0037] Fig. 15B is a side view of the fluid bypass manifold of Fig. 15 A;

[0038] Fig. 15C is a cross-sectional side view of the fluid bypass manifold of Fig. 15 A, while the manifold is in an engaged position;

[0039] Fig. 15D is a cross-sectional side view of the fluid bypass manifold of Fig. 15A while the manifold is in a disengaged position; and

[0040] Fig. 16 depicts a cross-sectional plan view of an embodiment of the additive delivery device of the present invention.

Description of the Embodiment(s) [0041] In describing the embodiments of the present invention, reference will be made herein to FIGS. 1 through 16 of the drawings in which like numerals refer to like features of the invention.

[0042] Embodiments of the present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like numbers refer to like elements throughout.

[0043] It will be understood that, although the terms first, second, etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Also, as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. It will be further understood that the terms "include" and/or "including" when used herein, specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.

[0044] It will be understood that when an element is referred to as being "on" or extending "onto" another element, it can be directly on or extend directly onto the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" or extending "directly onto" another element, there are no intervening elements present. It will also be understood that when an element is referred to as being "connected", "coupled", "operatively coupled", or the like to another element, it can be directly connected, coupled, or operatively coupled to the other element or intervening elements may be present. Moreover, it can be removable or integral with the other element and/or intervening elements. In contrast, when an element is referred to as being "directly connected", "directly coupled", or "directly operatively coupled" to another element, there are no intervening elements present.

[0045] Relative terms such as "below," "above," "upper," "lower," "horizontal," "vertical," "top," "bottom," "rear," "front," "side," or the like may be used herein to describe a relationship of one element or component to another element or component as illustrated in the figures. It will be understood that these terms are intended to encompass different orientations of the device in addition to the orientation depicted in the figures.

[0046] Additionally, in the subject description, the words "exemplary," "illustrative," or the like are used to mean serving as an example, instance or illustration. Any aspect or design described herein as "exemplary" or "illustrative" is not necessarily intended to be construed as preferred or advantageous over other aspects or design . Rather, use of the words "exemplary" or "illustrative" is merely intended to present concepts in a concrete fashion.

[0047] The method and apparatus of the present invention imparts additives and/or treatments to a flowing fluid, such as for example desired taste, aroma, or flavor to drinking water and other flowing liquids, thereby masking any undesirable taste, smell, or flavor in the drinking liquid. Although the application is effective for drinking liquids, the capability of imparting an additive or otherwise treating a flowing liquid that is not drinkable or made for human consumption is also an advantageous function.

[0048] The present invention may be readily used in residential and commercial drinking water purification units, though other usages are not meant to be precluded, including treating fluid in portable fluid dispensing devices. The apparatus of the present invention may be utilized to impart minute quantities of other materials in their liquid state to the flowing fluid source and may not be limited solely to introducing flavor or aroma enhancements. The description herein shall focus on flavor and aroma enhancements; however, it should be understood that other additive may be induced into a flowing liquid. [0049] By dissolving additive-imparting vapors to a flowing liquid, the present invention can achieve desirable tastes without bulk addition of additive imparting fluids and substances to a fluid system. Thus, the present invention can add flavor/aroma to a flowing liquid utilizing the additive material in a vapor state without adding solids or liquids to the fluid.

[0050] The present invention can provide for a vapor which is infused into a fluid line. An additive delivery cartridge of the present invention generates vapors infused with a flavor/aroma, and imparts the vapor to a flowing liquid stream, where the amount of vapor imparted into the fluid stream is a function of the flow rate of the fluid stream. The vapor-infused fluid can then provide a desired taste, aroma, or flavor even towards the end of the cartridge life, which can be as much as six months since the additive introduction only occurs during fluid flow.

[0051] FIGS. 1 through 16 illustrate various embodiments of a device to impart additive enhanced vapor to a flowing fluid, such as an additive delivery device 1. While the one or more embodiments of the invention are illustrated with respect to certain features of additive-delivery devices, it should be understood that any of the embodiments and/or features thereof illustrated with respect to one embodiment may be utilized with any of the other embodiments and/or features thereof. Similarly, while the present invention is directed to additive-delivery devices in fluid purification systems, different modalities and applications for introducing fluid within a system are not meant to be precluded, and the present invention is meant to embrace such alternatives.

[0052] An embodiment of the present invention is depicted at FIG. 1, and is directed to an additive delivery device 1 comprising a housing 2 having a first end including a fluid ingress 5, a fluid egress 6, an interior portion 40 forming an airtight sump having a bottom region or lower portion 9, which in at least one embodiment forms a downwards pointing conical shaped structure. The end of housing 2 opposite fluid ingress/egress 5, 6 includes a top cap 3, sealing the sump 40 within delivery apparatus 1. The construction of top cap 3 is adapted for sealing housing 2 by ultrasonic welding, a threaded joint, or any other means known in the art capable of establishing an airtight fastener. Within sump 40 at the lower portion 9 is stored an additive such as a flavor/aroma imparting volatile fluid 15. Other fluids may be utilized, including those designed to impart, for example, volatile essential oils, microbiological interception agents, vitamins, nutrients, or combinations thereof to name a few types of carrier fluids, and the present invention is not limited only to flavor/aroma enhancement.

[0053] As depicted in Figs. 1 and 2, an attribute of a conically shaped lower portion 9 is that fluid contact air carrier tube 13 and volatile fluid 15 is ensured until depletion of volatile fluid 15 within additive delivery device 1 or 1’, thereby maximizing the life expectancy of device 1 or 1’.

[0054] It should be understood by a person skilled in the art that the conical geometry of the lower portion is for exemplary purposes only, and other configurations which allow for complete usage of volatile fluid 15 with the present design are not precluded. In some embodiments, the tapered constructions may be removed such that the bottom of the additive delivery devicel is flat. It should be noted that the positioning of the tapered end can be shifted from the center of the delivery device to the side based on the design requirements.

[0055] The volatile fluid 15 of the present invention may fill the additive delivery device 1,1’ to any degree. Preferably, the volatile fluid 15 should fill the interior sump 40 of delivery device 1 to a point below the input opening 13b of air carrier tube 13 (as shown in Fig. 1), which may preferably be at a level L, and which is preferably about 75% ± 3% of the interior height of the delivery apparatus interior. While a preferable range is stated, the present invention can operate at any amount of volatile fluid, so long as the volatile fluid does not enter the air carrier tube 13 (discussed below). In addition, volatile fluid 15 can be selected from any volatile fluid naturally or chemically synthesized, and in the exemplary embodiment, for example, with a specific flavor or aroma. These could be, for example, citrus flavors/aromas, menthol flavors/aromas, or other natural flavors/aromas including spices, medicinal herbs, or the like, to impart a flavor/aroma into the flowing fluid. [0056] During operation of the additive delivery device, a treatable fluid, such as water, (not shown) enters device 1 through fluid ingress 5 along fluid path 50, past Venturi ejector 7 and exits fluid egress 6. The Venturi ejector creates a constriction within the pipe (classically an hourglass shape) that varies the flow characteristics of the treatable fluid (either liquid or gas) travelling through the tube. The Venturi effect essentially holds that in a situation with constant mechanical energy, the velocity of a fluid passing through a constricted area will increase and its static pressure will decrease. The fluid force of fluid path 50 creates a static pressure decrease, which in turn establishes a suction force within the Venturi ejector 7. Air carrier tube 13 is sealed to the Venturi ejector 7 at a bottom portion 13a and terminated within the chamber 18 of the sump interior at opposing end having input opening 13b, such that the sealed chamber is capable of holding a partial vacuum. The height or depth of air carrier tube 13 within the sump 40 is such that input opening 13b does not come into fluid contact with volatile fluid 15, thereby keeping the container spill-proof with respect to the volatile fluid 15 when the additive delivery device 1 is installed in-line with the flowing, treatable liquid.

[0057] The Venturi ejector 7 establishes a negative pressure effect and creates a partial vacuum within the additive delivery devicel. In the Venturi ejector 7, the diameter of flow path 50 begins to narrow after fluid ingress 5 along tapered portion 7a as it approaches the center region of ejector 7. After coming to a minimum diameter D, the minimum diameter is maintained until reaching the opposing side of the center region of ejector 7 (along flow path 50). At this point the diameter of flow path 50 increases along tapered portion 7b, reaching the maximum diameter of flow path 50 before proceeding to fluid egress 6. As a result of the change in cross-sectional area along flow path 50, a negative pressure the center region of ejector 7 occurs. The ejector 7 of the present invention can establish a near-vacuum pressure at low inlet water pressure ratings, for example as low as 0.3 kg/cm². The minimum pressure rating is exemplary, and other inlet water pressure ratings are not precluded. For example, the diameter of various apertures of the device may be altered to provide operation of the apparatus at lower or higher operating pressure. For example, the operating pressure rating may be as high as 2 kg/cm². [0058] In Table 1 below, the relationship between inlet water pressure ratings and vacuum forces generated was observed. At low inlet pressure (e.g., 0.3 kg/cm2), additive delivery devicel was able to provide a vacuum force sufficient to impart vapors within the device efficiently to the treatment fluid source (e.g., 0.01kg/cm2). As increased inlet pressure ratings were provided, the present invention displayed an exponential increase of vacuum force, as high as 0.18kg/cm² at inlet pressure ratings of 2kg/cm². As shown in the graphical representation of Table 1 in FIG. 5, a line of best fit 202 taken from a plot of the experimental data 204 was shown to have the following relationship: y=5.4421e^{1 6048x}, where y is the pressure of vacuum observed in mm Hg, and x is the inlet pressure of the suction fluid in kg/cm². While not attempting to be bound by theory, it is believed that the concentration of the vapor added to the treatment fluid source is a function of the vacuum force created, which is impacted by not only the inlet water pressure rating, but also by the Venturi ejector dimensions of the present invention. The degree of vapor concentration (V_conc) of the additive delivery device 1 of the present invention can be described as a function of the vacuum in terms of pressure (P_Vac), input water pressure

(Piw), change in cross sectional area of the Venturi ejector (D_ven), and is demonstrated by the relationship:

V_Conc = f(P vac, PlW, Dven)

Table 1

Observed Relationship Between Inlet Pressure and Vacuum Generated

Vacuum as

Inlet Pressure Vacuum Observed Vacuum Observed Calculated from Best

(kg/cm²) (mm Hg) (kg/cm²) Fit Equation

(mm Hg)

0.3 10 0.01 9.07

0.8 20 0.03 20.2

1.25 40 0.05 41.54

1.4 50 0.07 52.82

1.8 100 0.14 100.26

2.0 130 0.18 138.14 [0059] A partial vacuum is then established between Venturi ejector 7 through air carrier tube end 13a and the interior of the additive delivery device housing or chamber 18 through air carrier tube opening 13b.

[0060] Once suction within Venturi ejector 7 has been established, air carrier tube 13 may begin to pull air out of chamber 18 within the sump interior 40 along flow path 51. As a result of the pressure change due to vacuum force within the sump interior 40, air entry port 8 will begin to pull atmospheric air from the exterior of apparatus 1. Air entry port 8 may be disposed on the top cap 3 of additive delivery device 1, or any other location acceptable to create communication between the interior and exterior environment of the device. As depicted in FIGS. 1 through 4, air entry port 8 feeds into air entry tube 10. While a central location of auxiliary port 8 on top cap is shown, this is for exemplary purposes only as other configuration are not intended to be precluded. Regardless of the location, air entry port 8 establishes with the ingress airway for air entry tube 10 on the sump interior 40 side of additive delivery devicel. In some embodiments of the present invention, the air entry port 8 may include a high efficiency particulate filter 11 for filtering the ingress atmospheric air, such as a HEPA filter. With or without filter 11, air entry port 8 allows for communication of air entry tube 10 with atmospheric air, thus exposing air entry tube 10 to initial atmospheric pressure during operation of additive delivery devicel, and preventing the collapsing of the sump interior 40 once Venturi ejector 7 establishes a vacuum force within chamber 18 of the sump interior.

[0061] After atmospheric air enters the sump interior 40 via air entry port 8 and air entry tube 10, the air travels down air entry tube 8 along path 52, being pulled down towards the bottom portion 9 of the sump 40. The atmospheric air subsequently exits air entry tube opening 10a, forming bubbles 53 within the volatile fluid 15. The bubbling causes vaporizing of a portion of volatile fluid 15, imparting bubbles 53 with the essence of the volatile fluid 15. Bubbles 53 subsequently travel to the surface level 16 of the volatile fluid 15. As a result of a difference in weight, the bubbles 53 will burst, resulting in the vaporized portion of the volatile fluid 15 within bubbles 53 being released as a vapor carrier 54. Vapor carrier 54 of the volatile fluid 15 may then begin to fill the vacuum chamber 18. Due to an established pressure differential resulting from the treatable fluid stream traversing through the Venturi ejector 7, carrier vapors 54 of volatile fluid 15 are capable of travel into the opening 13b of the air carrier tube end, down air carrier tube 13 along path 56 and subsequently join the treatable fluid stream as the vapors enter Venturi ejector 7 through the opposing tube end 13a, where the carrier vapor 54 may be dissolved within the stream, thereby imparting the additive, which may be a flavor/aroma enhancer of the volatile fluid 15 into the treatable fluid stream. Due to the nature of the Venturi ejector 7, the present invention can produce additive-enhanced fluid on-demand, which can result in the additive being injected into the flowing liquid, such as for example, a perceptible flavor or aroma within a flowing liquid. If treatable fluid is not moving through flow path 50, no pressure differential is established, thereby limiting the vapors within air carrier tube 13 and preserving the lifetime of the additive within the additive delivery device.

[0062] In an embodiment of the present invention depicted in FIG. 2, the air carrier tube 13 and air entry tube 10 may comprise unidirectional valves 14, 12, respectively. Upon establishing suction within Venturi ejector 7, unidirectional valve 14 on air carrier tube 13 may open, allowing vacuum communication with vacuum chamber 18 through opening 13b. As a result of the suction established within vacuum chamber 18, unidirectional valve 12 may subsequently open within air entry tube 10, thereby establishing communication of atmospheric air with the sump interior 40 through air entry port 8. Unidirectional valves 14, 12 completely ensure that no volatile fluid 15 is consumed or lost prior to operation of additive delivery devicel, which further ensures a spill-proof container where fluid may not enter tube 13. While the unidirectional valve is preferably a check valve, this is for exemplary purposes only, and other forms of unidirectional valves which would allow sealing of the cartridge are not precluded, such as a duckbill valve, gate valve, butterfly valve, pressure valve, or an electronic valve. In another embodiment of the present invention, a check valve or other similar valve system may be located at both ends of the air entry tube 10 and/or air carrier tube 13 to established further spill-proof features of the present invention. As depicted in FIG. 2, a second set of unidirectional valves 14', 12' is shown at the opposing ends 13a, 10a of the air carrier tube 13 and air entry tube 10 respectively.

[0063] Turning now to FIG. 4, another embodiment of the present invention is depicted relating to a Venturi manifold and a vapor injecting apparatus system in which additive delivery device 1" does not need to be attached in-line with a treatable fluid stream. As depicted in FIG. 4, Venturi manifold 19 comprises a Venturi ejector 7' containing a fluid inlet 5' and fluid outlet 6'. The Venturi ejector 7' contains an ejector port 27, extending generally perpendicular to the flow path 50' of the Venturi manifold. The ejector port 27 may further include, for example, a bypass or similar valve which prohibits a suction force within the Venturi manifold prior to insertion of device 1". Upon insertion of the additive aperture or port 25 of the additive delivery devicel" within the ejector port 27, a vacuum force is established within the apparatus interior 40'. In similar fashion to previous embodiments, air entry tube 10' may pull atmospheric air from air entry port 8' into a volatile fluid 15 within device 1" as a result of the vacuum force established within the sump interior 40'. After vaporizing a portion of the volatile fluid 15 within bubbles formed by the atmospheric air, the bubbles of the atmospheric air may travel to the surface level of volatile fluid 15 where they subsequently burst, allowing carrier vapors to transport the essence of volatile fluid 15 to fill the container. These carrier vapors may be drawn into the opening of air carrier tube 13' in the vacuum chamber 18' of sump interior 40'. The essence of the volatile fluid 15 may be carried by the carrier vapors into the Venturi ejector 7' of the ejector port 27, where it subsequently joins the treatment fluid, imparting the essence of the volatile fluid 15 within the treatment fluid. In effect, the system provides for an on-demand system which treats the fluid with an additive, e.g., capable of improving the taste of the treatment fluid. The vacuum strength is a function of the fluid flow through the Venturi ejector. In one embodiment additive port 25 may contain (along with ejector port 27) an additional bypass valve, such as a check valve or other similar valve to ensure vapors of volatile fluid 15 are not consumed prior to the initiation of the treatment fluid within the Venturi manifold flow path 50'.

[0064] Turning now to FIG. 3A and FIG. 3B, in another embodiment of the present invention additive delivery devicelOO has an alternative, inverted vertically mounted design. In this embodiment, the additive delivery devicelOO consists of a housing 102 of preferably generally cylindrical geometry having a bottom portion 109 which may include tapered side portions to a generally flat bottom. Located at the top portion 104 are diametrically opposed fluid inlet 105 and fluid outlet 106, disposed radially on the apparatus top portion 104. Between fluid inlet 105 and fluid outlet 106 Venturi ejector 107 may be located which connects air carrier tube 113, extending into an interior portion of the housing comprising the empty space of the chamber 118 of the sump interior 140 above the level of volatile fluid 15. At the terminal end of air carrier tube 113 within chamber 118 is opening 113a. In this portion, at the opposing end of air carrier tube 113 connecting to Venturi ejector 107, or both ends of air carrier tube 113 may be a check valve or similar unidirectional valve which prevents carrier vapors from being released from device 100 prior to creation of vacuum force within Venturi ejector 107 (when the system is in-line with the treatment fluid). Housing top portion 104 may further comprise air entry port 108, connected to air entry tube 110 at one end. Air entry tube 110 extends into the sump or housing interior from the top portion 104 towards the bottom portion 109. At one or more terminal ends of the air entry tube 110 (at the end closest to the bottom 109 or at the end closest to air entry port 108), may be a check valve or similar unidirectional valve to prevent atmospheric air from the exterior of the cartridge 100 or the volatile fluid 15 located in the bottom portion 109 from entering air entry tube prior to establishment of the vacuum force in the Venturi ejector 107. As with other embodiments, after installation of apparatus 100 in-line with treatable fluid stream fluid path 50, vacuum effect may be produced within Venturi ejector 107. The vacuum force may then be established within the housing interior 140, starting with chamber 118. Resultant to the vacuum force established in the interior 140 of the housing 102, air entry tube 110 may begin to pull atmospheric air from the exterior of apparatus 100 via air entry port 108. Exterior air pulled into air entry tube 110 travels and may egress at the air entry tube 110 end located in conical bottom portion 109, expelling atmospheric air into the volatile fluid 15. The air passing through volatile fluid 15 may form bubbles within volatile fluid 15, vaporizing a portion of the volatile fluid 15 in the process. Upon reaching the surface level, these bubbles burst, releasing the vapors of volatile fluid 15 in the vacuum chamber 118. These carrier vapors may subsequently migrate into air carrier tube 113 due to the negative pressure created by the Venturi ejector 107. Upon mixing with flowing fluid at flow path 50, these carrier vapors may dissolve into the treatable fluid, imparting the additive, e.g., flavor, aroma, or essence of the volatile fluid 15 within the treated fluid stream. In the illustrative example, the indirect additive-enhanced infusion will provide a sense of flavor/aroma to fluid that would normally not be present after water treatment measures.

[0065] While an inverted vertical structure is stated herein, other configurations of the filter cartridge are not precluded. In some embodiments, the additive delivery device and complimentary air entry/air carrier tubes may be of a horizontal configuration. Additionally, while air entry port 8 is generally located centrally to the top cap 3 of the cartridge housing 2, air entry port 8 may be placed anywhere on the housing 2 or top cap 3 and still produce intended results.

[0066] In the present design, there is no direct contact of flowing fluid and the volatile fluid. The vapor induced treatable fluid is produced on-demand, meaning that suction forces are only produced after the cartridge is in-line and a treatable fluid is flowing through the fluid transport tube. In an exemplary embodiment, for flavor/aroma enhancement, the vapors of the volatile fluid contain only the essence of flavor/aroma, which may be added treatable fluid to improve the taste/smell. Due to the nature of the flow of treatable fluid moving through the cartridge, the rate of vapors being added to the flow path of treatable fluid is a function of the flow rate of the treatable fluid, thereby creating a consistent concentration of vapor. In effect, any issue of accumulation of flavor/aroma in the initial quantity of treatable fluid when the device is operated after a rest period is mitigated. The prolonged life of the additive delivery device with minimum quantity of fluid is a unique feature which differentiates the present invention from other techniques of imparting carrier vapors to a fluid. While the present invention discloses a method of treating a fluid to add a sense of flavors/aromas through vapors, other forms of adding vapors to a fluid line, such as adding vapors which provide additional nutrients or minerals to the fluid line are not precluded.

[0067] The degree of additive vapor which is added to the treated fluid is thus controlled by the present invention. Due to the flow rate of the influent and effluent water source traveling through the filter cartridges of the present invention, a constant suction force is produced without the need for any electromechanical means such as a pump, solenoid valve, or the like. In effect, the present invention may provide for a consistent concentration of additive-induced vapor imparted on the treated fluid stream over the life of the filter. The present invention can be used both in-line with the treated fluid stream or through the use of a Venturi manifold or similarly dedicated system.

[0068] In one or more embodiments, like those depicted at FIGS. 9 and 10, the additive delivery device may comprise a single housing or sump member with a plurality of vapor delivery cartridges for multiple flavor/aroma options to enhancement of a liquid stream. FIGS. 9 and 10 depict the additive delivery device 1000 which comprises housings have a plurality of selectable additive delivery cartridges 1002, 1004, 1006, 1008 for enhancement of liquid moving between a Venturi manifold 19' comprising a Venturi ejector 7", input 5", and output 6". In some embodiments, the device 1000 may include a bypass setting 1010, which may be of particularly advantageous in situations where no additive addition is desired. Upon selection of one of the one or more additive delivery cartridges 1002, 1004, 1006, 1008, the interior portion of the selected cartridge is placed in fluid communication with the fluid input, output, and the Venturi ejector 7". Each of the additive delivery cartridges 1002, 1004, 1006, 1008 comprises internal components identical to that of the device of the previous embodiments, and further includes a stanchion port 98 to establish communication between the Venturi ejector 7" and the interior of the selected additive delivery cartridge. As seen in FIG. 9, the stanchion of a disconnected cartridge 98' is no longer in fluid communication with the Venturi ejector 7" and thus in a non-producing position. In some embodiments, each stanchion 98, 98' may comprise a valve, such as a duckbill valve, check valve, gate valve, or other similar valve which would prevent the production of volatile fluid bubbles when disconnected from communication with the Venturi ejector 7".

[0069] In order to select an additive-induing cartridge, mechanical movement of the housing 1000 relative to the Venturi manifold 19' will cause rotation, translation, or similar movement of the stanchions 98, 98' of additive delivery cartridges 1002, 1004, 1006, 1008 relative to the Venturi ejector 27'. Upon vertical alignment of a stanchion 98, 98' with the manifold Venturi ejector port 27', communication between the air carrier tube 13 and the Venturi manifold 19' may be established for additive enhancement of a liquid moving through the Venturi manifold in accordance with the embodiments previously described. In some embodiments, proper alignment of the Venturi ejector port 27' with the air carrier tube 13 provides a positive, tactile feedback to the user in the form of a latch, indicating proper sealing. The top portion of the housing 1000 may include indicia which would determine the currently engaged additive delivery cartridge with the Venturi manifold 19'.

[0070] The present invention is based on the change in pressure within a cross-sectional area of water flow path. When the water is flowing between ingress 5 and egress 6 (as depicted in FIG. 2), a negative pressure, or partial vacuum, is established at point 7 due to change in cross sectional area of the Venturi ejector 7 and ingress/egress ports 5, 6. The vacuum created at Venturi ejector 7 creates a suction in the vacuum chamber 18 through communication with the air carrier tube 13.

[0071] Optionally, the additive delivery device may be incorporated within a water filtration system either before a UV treatment chamber or after a UV treatment chamber. The fluid, while passing through a transport tube in fluid communication with the additive delivery device 1, is made to pass through a specific flow path created. An air carrier tube 13 raises above the level of fluid in the additive delivery devicel, allowing only vapors of volatile fluid 15 to enter the air carrier tube 13. The system may also be used in conjunction with any inline water filtration unit/system used in the art, for example RO treatment systems (FIG. 8), or other filtration systems such as carbon block filters (FIG. 12). [0072] Turning now to FIG. 8, an embodiment of the additive delivery device 1 is shown between a fluid supply 80 and a fluid delivery 82 which also comprises an RO filter 94 therebetween having an ingress 94a and egress 94b. A pressure tank 96 having tank ingress 96a and tank egress 96b may be incorporated to provide the necessary pressure to ensure proper operation of the system. While the additive delivery device 1 may be connected downstream of the RO filter 94 and pressure tank 96, other placements of the additive delivery device 1 relative to the RO filter and/or pressure tank are not meant to be precluded. While the delivery device may be a single, cartridge construction similar to the previous embodiments described above, in some embodiments, the fluid supply/delivery line may comprise the delivery device including a manifold similar to the embodiments depicted in FIG. 4. Additionally, the system may comprise bypass manifold 700 (e.g., FIG. 8) or other similar bypass device describe herein in order to prevent utilization of the additive device when used in-line with the RO.

[0073] In some embodiments, like those depicted in FIG. 11, multiple additive delivery devices may be included within a single treatment stream for selection by an end user. As depicted, at least one additive delivery cartridge 301, 401, 501 which is connected to a corresponding Venturi manifold 319, 419, 519 may be placed in-line between a fluid supply 80 and a fluid delivery 82. While the embodiment depicted in FIG. 11 incorporates three delivery devices, the present invention should not be precluded, and a person of skill in the art would understand that any number of delivery devices may be incorporated in-line between a fluid supply 80 and fluid delivery 82. Each of the at least one additive delivery cartridges 301, 401, 501 includes the components and features in accordance with the previous embodiments described herein. Each Venturi manifold 319, 419, 519 comprises a fluid input 305, 405, 505, Venturi ejector 307, 407, 507, Venturi ejector port 327, 427, 527 for connection with the cartridge, and fluid output 306, 406, 506. Each Venturi manifold 319, 419, 519 may comprise a valve 70 which may be a duckbill valve, check valve, gate valve, globe valve, or other similar valve which would be understood by a person of skill in the art. Upon selection of an additive-inducing volatile fluid within one of the at least one additive delivery cartridge 301, 401, 501, the corresponding valve 70 adjacent the selected input 305, 405, 505 will be opened, allowing flow of a treated stream to pass through the Venturi ejector 307, 407, 507 where the treated liquid stream will be enhanced by the at least one delivery cartridge 301, 401, 501 in accordance with the embodiments described herein. After additive enhancement, the treated stream will egress the system via fluid output 306, 406, 506 for utilization in a manner similar to that described in any of the embodiments herein. In applications where no liquid enhancement is required, valve(s) 70 will remain closed and the treatment stream will egress via the fluid delivery 82. In one or more embodiments, the fluid delivery 82 may at the same location as one or more of the fluid output(s) 306, 406, 506, but other delivery locations of the fluid output(s) 306, 406, 506 and the fluid delivery 82 are not meant to be precluded.

[0074] FIG. 12 depicts the additive delivery device 1' and Venturi manifold 19 in accordance with the previous embodiments incorporated between a fluid supply 80 and a fluid delivery 82. As depicted, the system can comprise a carbon filter 91 in fluid communication with the system via ingress portions 91a and egress portions 91b, and may also comprise a UV chamber 93 in fluid communication with the system via ingress portions 93a and egress portions 93b. While the additive delivery device 1' and Venturi manifold 19 is depicted between UV chamber 93 and carbon filter 91, other configurations of incorporating the present invention between fluid supply and delivery portions are not meant to be precluded. In some embodiments the additive delivery device may be connected downstream the UV chamber 93. Additionally, the system may comprise bypass manifold 700 or other similar bypass device describe herein in order to prevent utilization of the additive delivery device when used in-line with the UV chamber and/or carbon filter.

[0075] In one or more of the embodiments, the additive delivery device may further comprise an air filter or other similar filtration means on air entry port 8. While optional, air filter may be preferrable in operations in which the fluid treatment device is installed in-line in conjunction with a UV chamber, RO membrane, or both. As such, the present invention may be included into any system in which the purpose is to add constant vapor concentration to a flowing treatment source. The present invention is completely modular, meaning that it can be installed at any point within an in-line stream and still provide flavor/aroma enhancing effects on the treatable fluid stream.

[0076] In one or more embodiments of the present invention, the additive delivery device described above may be a replaceable cartridge which incorporates one or more fluid enhancing additives. While other additives may be utilized, including those designed to impart, for example, volatile essential oils, microbiological interception agents, vitamins, nutrients, or combinations thereof to name a few types of carrier fluids, it should be understood by a person of ordinary skill in the art that the present invention is not limited only to a single fluid enhancement operation. Thus, the embodiments of the present invention may provide fluid enhancing additives to any flowing liquid operation, including household applications such as depicted in FIG. 6 comprising a fluid supply 90 for use with showers, spas, and other similar devices. In such embodiments, the additive delivery device 1' may be incorporated in-line with the fluid supply 90 to an outlet 6', comprising elements akin to the previous embodiments described herein. Such embodiment may further comprise a fluid filter 89 which may be a shower filter, carbon filter, or other similar filter which is known in the art.

[0077] While the embodiment depicted utilizes a Venturi manifold 19 like those similar to the embodiments depicted in FIG. 4, other embodiments which do not require a manifold are not meant to be precluded. Similarly, the embodiments of the present invention may be utilized in applications such as those depicted in FIG. 7 comprising a fluid supply 92 for use with household faucets and the like, and may optionally comprise a manifold design to those described therein.

[0078] For applications in which an end user does not desire to utilize the fluid enhancement of the exemplary embodiments of FIGS. 6 and 7, the device 1 may optionally include a bypass feature 88. Such embodiments are desirable, allowing the user access to additives, such as for example, flavor/aroma applications on demand, and is further desirable to facilitate removal of the cartridge or maintenance operations, and further allows flow operations which would not be appropriate for use with the present invention. [0079] In one or more embodiments, the present invention may be designed for placement inside an enclosure, such as a refrigerator, where the production of flavor/aroma enhancing vapors is responsive to low pressure air circulation within the enclosure, or in-line with the refrigeration units water supply inlet. As depicted in FIGS. 13 and 14, the additive delivery device 1 is shown in-line within a refrigeration unit. As depicted, the additive delivery device 1 is placed between a fluid supply 80 and a fluid delivery 82. While a refrigerator filtration unit 95 is depicted upstream of device 1 (closer to the fluid supply 80), in other embodiments, where flavor or aroma is not the principal additive, the refrigerator filtration unit may be downstream of the device 1 (closer to the fluid delivery 82). Further, the additive delivery device may comprise the bypass manifold 700 described herein or other similar methods of bypassing the utilization of the additive delivery device of the embodiments of the present invention.

[0080] While the refrigerator filter 95 having ingress 95a and egress 95b is separate from the delivery device (as best seen in FIG.13), in other embodiments, as depicted in FIG. 14, the refrigerator unit may be integrated with an additive delivery device 601 such that the filter egress 95b is in fluid communication with the device input 605. The additive delivery device of this embodiment may be functionally and structurally similar to the additive delivery device of the previous embodiments, including a Venturi ejector 607 in communication with an air carrier tube 613 to inject volatile fluid bubbles within the liquid stream, as well as an output 606 which will deliver additive-enhanced liquids to the fluid delivery 82. As in the previous embodiments, an air entry tube 610 having an air entry port 608, which may additionally comprise a filtration media, is exposed to the exterior of the device 601 to produce the volatile fluid bubbles in accordance with the methods described in the previous embodiments. Similar to the embodiments described with illustrative FIG. 14, in some embodiments bypass manifold 700, or some other similar device may be utilized to bypass production of the additive-induce device when used in combination with a refrigerator filter.

[0081] Turning now to FIGS. 15A through 15D, a fluid bypass manifold may be incorporated into any of the embodiments described herein. FIGS. 15A and 15B depict top plan and side views, respectfully, of a bypass manifold 700 which may be incorporated for usage with the additive delivery devices of the present invention. Bypass manifold 700 includes a stanchion inlet port 706 and a stanchion outlet port 708 for connection in-line between a fluid supply 80 and a fluid delivery 82 comprising a bypass supply line 702 and a bypass delivery line 704. Preferably, the bypass supply line 702 and delivery line 704 may be secured within the bypass manifold 700 via a detent mechanism formed between a projection 718 on the bypass supply 702 and bypass delivery 704 and a ramped collet 716.

[0082] While secured by the detent mechanism, bypass manifold 700 is subject to extraction forces that tend to push the bypass manifold housing away from the bypass supply 702 and bypass delivery 704. These extraction forces result from resilient members 712 in each stanchion port 706, 708 that force shutoff plugs 714 into position in order to block the stanchion inlet port 706 and stanchion outlet port 708. Preferably, the resilient members 712 comprise a compression spring, although other resilient members, including rubber grommets, tension springs, torsion springs, spiral springs may be used to provide a similar result. Upon receiving an applied force in direction 710, the applied force may overcome the extraction forces, which may subsequently compress the resilient members 712 within the manifold 700, shifting shutoff plugs 714 further up each stanchion port 706, 708 such that inlet valve 720 is aligned with the stanchion ports 706, 708. The applied force thus locks the shutoff plugs 714 in an engaged position within the stanchion ports 706, 708, placing the manifold in a bypass position similar to that depicted in FIG. 15C, where flowing liquid will be pass from the fluid supply 80 into the manifold stanchion inlet port 706 via bypass supply 702, through the inlet valve 720 whereby the flowing liquid exits via stanchion outlet port 708, into the bypass delivery 704, to the fluid delivery 82. Upon a subsequent applied force to bypass manifold 700 in direction 710, the shutoff plugs 714 are disengaged within the stanchion ports 706, 708, and the manifold is urged to its original position such that shutoff plugs 714 may close the bypass inlet valve 720, similar to the embodiment depicted in FIG. 15D. As a result, bypass manifold 700 may be placed in a disengaged position, such that flowing liquid will proceed through the Venturi ejector 7, 7' for treatment by the additive inducing devices of the present invention. While usage of the bypass manifold 700 with the additive inducing device for redirection of a flowing liquid moving between a fluid supply 80 and a fluid delivery 82 is preferrable, other methods of incorporating a bypass for selective treatment of a flowing liquid are not meant to be precluded. In some embodiments, a valve 730 (FIG. 15 A) may be incorporated to perform bypass functions comprising a solenoid valve, pinch valve, or other bypass valve which would be used by a person of skill in the art.

[0083] One or more embodiments of the additive inducing device of the present invention may further comprise a removable septum 42 disposed on the endcap, allowing the user to refill the device 1 with additional additive-inducing volatile fluids (also seen in the exemplary view of FIG. 16, depicting septum 42 in connection with the embodiments utilizing a Venturi manifold 19 with a removable cartridge 1"). The septum 42 may comprise a rubber septum, threaded member having a gasket, or other similar device known in the art which would provide a removable, fluid-tight seal within the additive delivery device. The embodiments of the present invention are therefore capable of embracing utilization and installation within any flowing liquid line which imparting fluid enhancing additives is desirable.

[0084] Thus, the present invention provides one or more of the following advantages: achieving an additive-induced fluid without directly dissolving additive-bearing substances into the fluid. The additive delivery device can achieve flavors and fragrances by adding infinite decimal quantities of natural or synthetic flavors, fragrances, nutrients or other additives. The design of the present invention is scalable in terms of size and lifespan based on the requirements and specifications needed. The additive delivery device of the present invention provides for an affordable and consistent means to enhance a treatable fluid in a water filtration system, such that the taste/aroma of a treatable fluid may be improved, particularly in systems where the TDS would normally impart an undesirable taste or smell. The system can be adapted to be a single in-line system or even a system having a manifold and additive delivery device which provides for additive enhanced fluid streams. The configurations of the system are customizable to allow for usage of the cartridge in any water treatment system. [0085] While the present invention has been particularly described, in conjunction with one or more specific embodiments, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. It is therefore contemplated that the appended claims will embrace any such alternatives, modifications and variations as falling within the true scope and spirit of the present invention.

Thus, having described the invention, what is claimed is:

Claims

29 We Claim:

1. An additive delivery device for imparting a carrier vapor into a flowing liquid comprising: a housing having a top portion including an endcap having an aperture, a bottom portion including a fluid transport tube having a fluid ingress, a fluid egress, and a Venturi ejector in-line therebetween; a first tube having a first end connected to said Venturi ejector, said first tube extending within an interior portion of the housing and having a predetermined height, said first tube having a second end within said interior portion containing an opening; a second tube located within the interior portion of the housing and extending therein, said second tube having a first end located at a bottom region of said interior portion of the housing, and a second end in fluid communication with said aperture on said endcap such that said interior portion of the housing is in fluid communication with atmospheric air outside of said housing; and a volatile fluid within said bottom region of said interior portion of said housing, said volatile fluid filling the interior portion up to an amount less than the height of said first tube, such that said volatile fluid does not enter said first tube; wherein said volatile fluid produces carrier vapors upon establishment of a pressure differential within said Venturi ejector and said interior portion of the housing, said carrier vapors capable of entering the flowing liquid between said fluid ingress and said fluid egress as a function of flow rate.

2. The additive delivery device of claim 1 wherein said volatile fluid comprises volatile essential oils, microbiological interception agents, vitamins, nutrients, or any combination thereof. 30

3. The additive delivery device of claim 1 wherein said aperture comprises a high efficiency particulate filter.

4. The additive delivery device of claim 1 wherein the second tube and/or the first tube comprises a unidirectional valve.

5. The additive delivery device of claim 1 wherein the first tube comprises a unidirectional valve.

6. The additive delivery device of claim 1 wherein said bottom region comprises a tapered portion.

7. The additive delivery device of claim 1, wherein the device may be integrated with a refrigerator water delivery line.

8. The additive delivery device of claim 1, wherein the device further comprises a fluid filtration cartridge including fluid filter media, the fluid filtration cartridge proximate said additive delivery device and in fluid communication therewith.

9. The additive delivery device of claim 1 wherein the device achieves a degree of concentration (V_conc) of said carrier vapors within said fluid according to the following formula:

V_Conc = f(P vac? PlW, Dven)

Where:

Vconc = the concentration of carrier vapors within said flowing liquid, Pvac = vacuum in terms of pressure (mm Hg),

Piw ⁼ pressure of the fluid (kg/cm²), and D_ven= change in cross sectional area of the Venturi ejector (m²).

10. A fluid-treatment system for imparting a carrier vapor into a flowing liquid comprising: a Venturi manifold comprising a manifold housing having a fluid ingress, a fluid egress, and a Venturi ejector therebetween; a replaceable delivery cartridge comprising a housing having a first end including an end cap having an aperture therethrough, a second end having an aperture to establish fluid communication with said Venturi ejector, an air entry tube having a first end in communication with said end cap aperture, a second end within a bottom portion of said interior portion of said delivery cartridge, and a length therebetween, and an air carrier tube having a first end in communication with said second end aperture, a second end within the interior portion of said delivery cartridge, and a length therebetween; a volatile fluid within said bottom portion of said interior portion of the delivery cartridge, said volatile fluid filling the interior portion of the delivery cartridge to an initial predetermined volume, said volume establishing a fluid level at a height within the interior portion less than a height of said air carrier tube second end; wherein said volatile fluid produces carrier vapors upon establishment of a pressure differential within said Venturi ejector and said interior portion of the housing, said carrier vapors capable of entering said flowing liquid between said fluid ingress and said fluid egress as a function of flow rate.

11. The fluid-treatment system of claim 10 wherein said aperture comprises a high efficiency particulate filter.

12. The fluid-treatment system of claim 10 wherein the second tube and/or the first tube comprises a unidirectional valve.

13. The fluid-treatment system of claim 10, wherein the system may be integrated with a refrigerator water delivery line.

14. The fluid-treatment system of claim 10, wherein the system may be integrated with a sink or shower water delivery line.

15. The fluid-treatment system of claim 10, wherein the system may be integrated with a water treatment system comprising a carbon filter, a UV chamber, an RO filter, a pressure tank, or any combination thereof.

16. The fluid-treatment system of claim 10, further comprising a bypass manifold and/or bypass valve.

17. The fluid-treatment system of claim 10 wherein the system achieves a degree of concentration (V_conc) of said carrier vapors within said fluid according to the following formula:

V_Conc = f(P vac, PlW, Dven)

Where:

Vconc ⁼ the concentration of carrier vapors within said flowing liquid,

Pyac ⁼ vacuum in terms of pressure (mm Hg),

Piw = pressure of the fluid (kg/cm²), and

D_ven= change in cross sectional area of the Venturi ejector (m²).

18. A method of imparting a carrier vapor into a flowing liquid comprising: directing a flowing liquid along a flow path comprising a fluid ingress, a fluid egress, and a Venturi ejector therebetween; establishing a vacuum force at the Venturi ejector, such that the vacuum force is established within a replaceable delivery cartridge housing in 33 fluid communication with the Venturi ejector, said delivery cartridge housing comprising an interior chamber; pulling atmospheric air from an exterior surface of the housing into the housing via a second tube, causing atmospheric air to form bubbles within a volatile fluid disposed within a bottom portion of the interior chamber, wherein the bubbles contain a portion of said volatile fluid as a vapor therein; filling said interior chamber with said vapors of said volatile fluid; and pulling said vapors from the housing interior chamber into the flowing liquid via the Venturi ejector, wherein said vapors will impart a flavor and/or aroma onto the flowing liquid. eplaceable additive delivery cartridge for imparting a carrier vapor into a flowing liquid comprising: a housing having a top portion and a bottom portion, said top portion including an endcap having an aperture; a first tube having a first end having a first opening for connection with a Venturi manifold having a Venturi ejector, a second end within an interior portion of the housing, said second end including an opening, and a length therebetween; a second tube located within the interior portion of the housing having a first end located in a bottom region of said interior portion, a second end in communication with said aperture on said endcap, and a length therebetween, said aperture on said endcap in communication with atmospheric air on an exterior of said housing; and a volatile fluid within said bottom region of said interior portion of said housing, said volatile fluid filling the interior portion a volume having a distance less than distance a distance to said first tube opening; wherein said volatile fluid is capable of producing vapors upon establishment of a vacuum force within said Venturi ejector, said 34 vapors capable of entering the flowing liquid between said fluid ingress and said fluid egress through said first tube. replaceable additive delivery cartridge of claim 19 wherein the second tube and/or first tube comprises a unidirectional valve. replaceable additive delivery cartridge of claim 19 wherein said bottom region comprises a tapered portion. replaceable additive delivery cartridge of claim 19 wherein the cartridge is capable of insertion within a sump housing comprising at least one stanchion for fluid communication with the Venturi manifold Venturi ejector. additive delivery system for imparting a carrier vapor into a flowing liquid comprising: a moveable sump member having an interior portion, a bottom portion including at least one stanchion port, and a top portion including an endcap; a plurality of vapor delivery cartridges within the sump member interior portion, each of said plurality of vapor delivery cartridges comprising: a replaceable cartridge having a cartridge housing with a top portion and a bottom portion, said top portion including an endcap having an aperture, a first tube having a first end having a first opening for fluid communication with the at least one stanchion port upon insertion of the cartridge housing into the sump member interior portion, a second end within an interior chamber portion of the housing, said second end including an opening, and a length therebetween, a second tube located within the interior chamber portion of the housing having a first end located in a bottom region of said 35 interior chamber portion, a second end in communication with said aperture on said endcap, and a length therebetween, said aperture on said endcap in communication with atmospheric air on an exterior of said cartridge housing, and a volatile fluid within said bottom region of said interior chamber portion of said housing, said volatile fluid filling the interior chamber portion a volume having a distance less than distance a distance to said first tube opening; and a Venturi manifold comprising a manifold housing having a fluid ingress, a fluid egress, and a Venturi ejector therebetween; wherein a one of the plurality of vapor delivery cartridges are capable of selection via the moveable sump member such that fluid communication between the at least one stanchion port, the one of the plurality of vapor delivery cartridges, and the Venturi ejector is established and wherein said volatile fluid produces carrier vapors upon establishment of a pressure differential within said Venturi ejector and said interior portion of the housing, said carrier vapors capable of entering said flowing liquid between said fluid ingress and said fluid egress as a function of flow rate. additive delivery system of claim 23 wherein the moveable sump member is capable of rotational movement. additive delivery system of claim 23 wherein the at least one stanchion port includes a valve. additive delivery system of claim 23 wherein the moveable sump member includes a plurality of stanchion ports. 36 additive delivery system of claim 23 wherein each of the plurality of vapor delivery cartridges includes a septum on the endcap such that the volatile fluid in each of the plurality of vapor delivery cartridges is refillable.