Atmospheric humidity-to-liquid water conversion system

Abstract

The water harvesting system includes: an air processing subassembly; a moisture harvesting subassembly; a collection subassembly; and a water tank interface. The air processing subassembly includes: an air inlet; and a blower. The moisture harvesting subassembly includes an adsorption chamber containing a sorbent configured to: during an adsorption phase, capture water from the outdoor air flow; and during a desorption phase, release water to generate a humidified desorption flow. The collection subassembly includes: a refrigeration subsystem configured to condense harvested water from the humidified desorption flow; an air exhaust; and a water outlet. The water tank interface: is disposed within a through-bore of a water tank of the water dispenser; fluidically couples the water outlet to an internal volume of the water tank; and is configured to direct the harvested water from the water outlet into the internal volume of the water tank.

Description

AQUA-M02-PCT ATMOSPHERIC HUMIDITY-TO-LIQUID WATER CONVERSION SYSTEMCROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This Application claims the benefit of U.S. Provisional Application No. 63 / 746,994, filed on 18-JAN-2025, which is incorporated in its entirety by this reference.TECHNICAL FIELD

[0002] This invention relates generally to the field of water harvesting systems and more specifically to a new and useful indoor water harvesting system configured to cooperate with a water dispenser.BRIEF DESCRIPTION OF THE FIGURES

[0003] FIGURE 1 is a schematic representation of a water harvesting system;

[0004] FIGURE 2 is an exploded view representation of the water harvesting system;

[0005] FIGURE 3 is a schematic representation of the water harvesting system cooperating with a water dispenser;

[0006] FIGURE 4A is a schematic representation of the mounting bracket of the water harvesting system;

[0007] FIGURE 4B is a schematic representation of the water harvesting system; and

[0008] FIGURE 5 is a schematic representation of the water tank interface of the water harvesting system.DESCRIPTION OF THE EMBODIMENTS

[0009] The following description of embodiments of the invention is not intended to limit the invention to these embodiments but rather to enable a person skilled in the art to make and use this invention. Variants, variations, configurations, embodiments, implementations, example implementations, and examples described herein are optional and are not exclusive to the variants, variations, configurations, embodiments, implementations, example implementations, and examples they describe. The invention described herein can include any and all permutations of these variants, variations, configurations, embodiments, implementations, example implementations, and examples.

[0010] Generally, the term “can,” as utilized herein, indicates an action or attribute of the system, which may or may not be executed by or be applicable to the system, depending on the implementation or embodiment of the system.

[0011] Generally, the term “include,” as utilized herein, can mean “comprise,” “consist of,” or “consist essentially of,” and is not restricted to any one of the above interpretations throughout.AQUA-M02-PCT

[0012] Generally, the term “a set of,” as utilized herein, refers to one or more of the subject objects. Additionally, the terms “first,” “second,” “third,” etc., as utilized herein, do not imply an order but simply identify multiple instances of a step or component unless an order or series is otherwise implied.

[0013] Generally, the terms “planar,” “symmetric,” “coaxial,” “parallel,” “perpendicular,” and other terms characterizing the relative position defining characteristics of physical objects, as utilized herein, describe substantial adherence to the aforementioned concepts within mechanical tolerances. For example, if one component is “coaxial” with another, this indicates that the central axes of these components are aligned within a predefined tolerance. However, these components may define slightly different central axes relative to each other (e.g., due to play in an interface between these components, elasticity, and / or thermal expansion).

[0014] Generally, the term “defining,” as utilized herein, describes elements of a subject, is open-ended, and does not exclude additional unrecited elements or method steps.

[0015] Generally, the term “sorbent,” as utilized herein, describes any adsorbent material in various forms, including but not limited to powder, pellets, shaped bodies, composites, or monoliths.

[0016] Generally, the terms “extracting,” “generating,” and “harvesting,” as utilized herein, should be understood to be equivalent terms referring to the process of transforming air humidity into liquid water.

[0017] Generally, the terms “humidity,” “moisture,” and “water,” as utilized herein, each refer to H2O.

[0018] Generally, the terms “water bottle” and “water tank,” as utilized herein, should be understood to be equivalent terms.

[0019] The systems and methods described herein can be embodied and / or implemented at least in part as a machine configured to receive a computer-readable medium storing computer-readable instructions. The instructions can be executed by computer-executable components integrated with the application, applet, host, server, network, website, communication service, communication interface, hardware / firmware / software elements of a user computer or mobile device, wristband, smartphone, or any suitable combination thereof. Other systems and methods of the embodiment can be embodied and / or implemented at least in part as a machine configured to receive a computer-readable medium storing computer-readable instructions. The instructions can be executed by computer-executable components integrated by computer-executable components integrated with apparatuses and networks of the type described above. The computer-readable medium can be stored on any suitable computer-readable media,AQUA-M02-PCT such as RAMs, ROMs, flash memory, EEPROMs, optical devices (CD or DVD), hard drives, floppy drives, or any suitable device. The computer-executable component can be a processor, but any suitable dedicated hardware device can (alternatively or additionally) execute the instructions.

[0020] As a person skilled in the art will recognize from the following detailed description and from the figures and claims, modifications and changes can be made to the embodiments of the invention without departing from the scope of this invention as defined in the claims.1. System

[0021] As shown in FIGURE 3, the water harvesting system 100 is configured to cooperate with a water dispenser and includes: an air processing subassembly 102; a moisture harvesting subassembly 108; a collection subassembly 114; and a water tank interface 122. The air processing subassembly 102 includes: an air inlet 104 fluidically coupling the air processing subassembly 102 to an outdoor environment; and a blower 106 configured to direct an outdoor air flow 154 into the air inlet 104. The moisture harvesting subassembly 108 includes an adsorption chamber 110 containing a water adsorption sorbent configured to: during an adsorption phase, capture water from the outdoor air flow 154; and during a desorption phase, release water to generate a humidified desorption flow. The collection subassembly 114 includes: a refrigeration subsystem 116 configured to condense harvested water from the humidified desorption flow, resulting in a dehumidified desorption flow; an air exhaust 118 fluidically coupling the collection subassembly 114 to the outdoor environment and directing the dehumidified desorption flow from the refrigeration subsystem 116 toward the outdoor environment; and a water outlet. The water tank interface 122: is disposed within a through-bore 160 of a water tank 158 of the water dispenser; fluidically couples the water outlet to an internal volume of the water tank 158; and is configured to direct the harvested water from the water outlet into the internal volume of the water tank 158.2. Applications

[0022] Generally, the water harvesting system 100 (hereinafter “the system 100”) and the associated method for harvesting water from atmospheric humidity provide an integrated approach to harvesting moisture from outdoor atmospheric air and converting the moisture into liquid water. The water harvesting system 100 includes an air processing subassembly 102, a moisture harvesting subassembly 108, a collection subassembly 114, a controller, and a water tank interface 122 that operate in coordinated phases to adsorb moisture from conditioned inletAQUA-M02-PCT air, desorb the moisture through heating, condense the resulting humidified desorption air, and treat the condensate water through purification and mineralization stages.

[0023] The water harvesting system 100 provides reliable integration with a downstream water dispenser or tank via the water tank interface 122. The water tank interface 122 includes a sealing gasket 146, a water hose 144, and a fill level sensor 124 that together establish a leak-resistant connection to an external water tank 158 of a dispenser. For example, the water tank interface 122 can be configured to couple to a 5 -gallon water tank of a gravity-fed water dispenser, thereby filling the 5-gallon water tank with water harvested from outdoor air.

[0024] The water harvesting system 100 is configured to be installed within an indoor space without disturbing indoor environmental conditions. The air processing subassembly 102 includes an air inlet 104 and a blower 106 that draws outdoor atmospheric air from outside the building envelope, preventing the system 100 from dehumidifying or otherwise altering indoor air. The air filtration subsystem filters inlet air to remove particulates before the air enters the adsorption chamber 110, and the air exhaust 118 routes dehumidified exhaust air back to the outdoor environment. A mounting bracket 138 secures the system to an exterior wall or similar structure, and the collection subassembly 114, controller, and water tank interface 122 occupy a compact indoor footprint.

[0025] Further, the water harvesting system 100 addresses low efficiency and high energy consumption associated with conventional atmospheric water generators that rely solely on direct condensation or a basic desiccant system. The moisture harvesting subassembly 108 incorporates an adsorption chamber 110 containing sorbent trays loaded with sorbent (e.g., a sorbent) and an air flow path that exposes air to the sorbent in a manner that maximizes moisture capture before transitioning to a desorption phase. The heating subsystem heats the sorbent to release captured moisture as humidified desorption air, and the refrigeration subsystem 116 cools the humid stream to produce condensed water droplets with reduced energy expenditure compared to systems that continuously cool ambient air. The controller executes feedback control that adjusts operational parameters based on a real-time sensor data set acquired by a sensor array, enabling the system 100 to transition between adsorption and desorption phases at data-informed intervals rather than operating with standard adsorption and desorption phase durations. The data-informed feedback control thereby reduces the overall energy consumption of the water harvesting system 100 relative to direct-condensation atmospheric water generators.

[0026] The water harvesting system 100 is configured to maintain water production over a wide range of ambient humidity levels and environmental conditions. The sensor array monitors adsorption state by measuring inlet and outlet air properties, and the feedback control methodAQUA-M02-PCT executed by the controller uses adsorption metrics data to determine when the sorbent has reached a moisture-saturated sorbent bed configuration. The controller transitions between phases based on the active phase state and updated operational set-points derived from the real-time sensor data set, allowing the system 100 to adapt cycle timing to prevailing humidity conditions ranging from approximately five percent to ninety-five percent relative humidity. The inverting baffle redistributes airflow across the sorbent trays to ensure uniform moisture loading even when ambient humidity fluctuates, and the system-wide redundant sensor voting variant enhances measurement reliability by cross-checking sensor readings before triggering phase transitions.3. Atmospheric Humiditv-To-Liquid Water Conversion System

[0027] As shown in FIGURE 3, the water harvesting system 100 can extract liquid water from outdoor atmospheric air. Generally, the system 100 can include an air processing subassembly 102, a moisture harvesting subassembly 108, a collection subassembly 114, and / or a controller arranged in a modular architecture. The moisture harvesting subassembly 108 can capture moisture from inlet air using a sorbent and subsequently release captured moisture through controlled heating. The collection subassembly 114 can condense released water vapor and route condensed water through a collection pathway to a water tank interface 122. The controller can monitor and dynamically adjust operational parameters based on environmental conditions and / or system state. Thus, the modular architecture of the system 100 can address efficiency and energy consumption challenges by coordinating dedicated subassemblies for air processing, moisture harvesting, and collection.

[0028] The system 100 can be configured for indoor installation and operate on outdoor air while maintaining outdoor air isolation from the indoor environment. In one implementation, the system 100 can employ a split-duct arrangement and / or insulated chassis walls to perform water generation from outdoor air without materially altering the temperature or humidity of the indoor space. Exhaust air (e.g., dehumidified air output from the desorption process) is expelled outdoors, which can prevent latent heat release indoors. Additionally, the system 100 can include vibration-attenuated mounting to damp mechanical vibrations to a target sound level (e.g., below approximately 45 dBA at one meter), which can satisfy common office and / or residential noise standards. Thus, the indoor environmental isolation features of the system 100 can address challenges associated with integrating atmospheric water generators into indoor spaces without disturbing indoor environmental conditions.AQUA-M02-PCT 3.1. Mounting Bracket

[0029] Generally, as shown in FIGURE 4A, the water harvesting system 100 can include a mounting bracket 138 configured to mechanically support and align the system 100 with building infrastructure. More specifically, the mounting bracket 138 can define: an air inlet 104 port configured to align the air inlet 104 to an inlet duct of the indoor space (e.g., an HVAC inlet duct); and an air outlet port 142 configured to align the air exhaust 118 to the exhaust duct of the indoor space (e.g., an HVAC outlet duct). Therefore, the mounting bracket 138 supports: the air inlet 104 that is configured to engage with an inlet duct of the indoor space fluidically coupled to the environment; and the air exhaust 118 that is configured to engage with an exhaust duct of the indoor space fluidically coupled to the environment.

[0030] The mounting bracket 138 can position the air inlet 104 and the air exhaust 118 relative to an interior surface of the indoor space so that the air inlet 104 aligns with an inlet duct of the indoor space fluidically coupled to the environment and the air exhaust 118 aligns with an exhaust duct of the indoor space fluidically coupled to the environment. In one implementation, the mounting bracket 138 orients the air inlet 104 and the air exhaust 118 on a common mounting plane so that the air inlet 104 and the air exhaust 118 register with corresponding openings of existing HVAC ducting when the mounting bracket 138 is fixed to a wall, ceiling, and / or service chase. In another implementation, the mounting bracket 138 spaces the air inlet 104 and the air exhaust 118 along a horizontal axis or a vertical axis according to a predetermined pitch that corresponds to a standard center-to-center distance between an HVAC supply duct and an HVAC return duct of the indoor space.

[0031] In one implementation, the mounting bracket 138 can define flanged collars, sleeves, and / or circular cutouts around the air inlet port 140 and the air outlet port 142, sized to receive standardized duct fittings (e.g., round or rectangular ducts having exemplary diameters between 75 mm and 300 mm). In another implementation, the mounting bracket 138 supports adjustable adapter rings and / or telescoping duct stubs around the air inlet port 140 and the air outlet port 142 so that an installer of the system can extend the air inlet 104 and the air exhaust 118 to meet existing HVAC ducting. Additionally, the mounting bracket 138 can support gaskets, flexible couplings, and / or fastening features (e.g., screw holes, clips, and / or tabs) around the air inlet port 140 and the air outlet port 142 so that an installer can couple the air inlet 104 to an air supply or outdoor air duct and can couple the air exhaust 118 to a return or exhaust duct while maintaining an air-tight and vibration-damped interface with the HVAC ducting of the indoor space.

[0032] The mounting bracket 138 can be fabricated from rigid, corrosion-resistant materials (e.g., powder-coated steel and / or aluminum alloys) to provide mechanical stability andAQUA-M02-PCT environmental durability. In one implementation, the mounting bracket 138 can be configured to transfer the mechanical load of the system 100 to a wall, window frame, or other structural element, thereby enabling secure installation without requiring dedicated floor space. Additionally or alternatively, the mounting bracket 138 can provide vibration isolation through elastomer inserts and / or decoupling mounts that attenuate mechanical vibrations from components such as a refrigeration compressor and / or blower 106, thereby decreasing transmitted noise and prolonging structural integrity of adjoining walls or windows.

[0033] In one implementation, the mounting bracket can include a set of shelves. More specifically, the mounting bracket can define: a first shelf configured to removably receive and support the air processing subassembly; a second shelf configured to removably receive and support the moisture harvesting subassembly; and a third shelf configured to removably receive and support the collection subassembly. The set of the shelves of the mounting bracket is therefore enabled to separately support each subassembly, which can improve ease of installation and maintenance of the system 100.3.2. Air Processing Subassembly

[0034] As shown in FIGURES 2, 3, and 4B, the water harvesting system 100 includes an air processing subassembly 102 configured to receive ambient outdoor air and condition (e.g., direct and / or filter) the air for downstream moisture harvesting. The air processing subassembly 102 is configured to source and process outdoor atmospheric air without impacting the environmental conditions of the indoor space where the system 100 is installed. More specifically, the air processing subassembly 102 includes: an air inlet 104 fluidically coupling the air processing subassembly 102 to an outdoor environment; and a blower 106 configured to direct an outdoor air flow 154 into the air inlet 104. In one implementation, the air processing subassembly includes an insulated internal compartment configured to thermally isolate outdoor air from an indoor space where the system 100 is installed.

[0035] Generally, the air processing subassembly 102 can source outdoor air by drawing outdoor air through the air inlet and conveying the air into an internal compartment of the system 100 via insulated ducting. The insulated ducting can maintain thermal isolation during conveyance to prevent condensation and / or heat transfer losses to the indoor environment. Thus, the air processing subassembly 102 can source a continuous supply of untreated air for water harvesting irrespective of indoor conditions, addressing the challenge of maintaining consistent water production over a wide range of ambient humidity levels.AQUA-M02-PCT

[0036] Generally, the air processing subassembly 102 includes a blower 106 configured to draw outdoor air in through the air inlet 104 and direct airflow through the system 100. More specifically, the blower 106 can establish a controlled pressure differential between the air inlet 104 and downstream portions of the air processing subassembly 102 to define a target volumetric flow rate. Additionally, the blower 106 can operate according to one or more speed settings or a variable-speed drive controlled by the controller to adjust airflow in response to sensor feedback. In one embodiment, the blower 106 can modulate airflow to achieve a target residence time of the conditioned inlet air within the adsorption chamber 110, thereby promoting efficient moisture adsorption. In one implementation, the blower is a centrifugal blower configured to rotationally actuate a rotor and / or a set of blades to move air.

[0037] In one implementation, the air processing subassembly 102 can remove particulates and contaminants from the incoming air stream via an air filtration subsystem. More specifically, the air filtration subsystem can capture dust, pollen, and / or other airborne contaminants without substantially impeding the volumetric flow rate. In one embodiment, the air filtration subsystem can include a replaceable mechanical pre-filter configured to intercept larger particulates (e.g., fibers, insects, and coarse dust), followed by a finer particulate filter (e.g., a pleated media filter with an exemplary pore size range between 0.1 pm and 10 pm) to remove smaller particles. In another embodiment, the air filtration subsystem can include a high-efficiency particulate air-type filter element and / or an electrostatic filter element configured to enhance the removal of submicron-sized particulates while maintaining a target pressure drop across the filter element. The air filtration subsystem can further include an activated carbon stage and / or other sorbent media configured to reduce volatile organic compounds and odors in the incoming air stream. The air filtration subsystem can protect downstream sorbent media and refrigeration components from fouling, thereby preserving long-term system efficiency.

[0038] In one implementation, the air processing subassembly 102 can include a sensor array configured to provide real-time environmental sensing. More specifically, the sensor array can include temperature sensors, air flow sensors, humidity sensors, pressure sensors, and / or air quality monitors positioned downstream of the air inlet 104 to sense conditions of the outdoor air. The sensor array is configured to sense conditions of the outdoor air before, during, and / or after processing by the air processing subassembly 102. The sensor array can continuously measure environmental parameters and transmit data to a controller for dynamic optimization of adsorption and / or desorption schedules and blower speed. For example, the sensor array can include a humidity sensor, and the controller of the system 100 can dynamically change the residence time of the outdoor air in the adsorption chamber based on a humidity readingAQUA-M02-PCT captured by the humidity sensor (e.g., increase air residence time for higher humidity outdoor air and decrease air residence time for lower humidity outdoor air). Thus, the sensor array enables adaptive control of the system and operation parameters based on current environmental conditions.

[0039] In one implementation, the air processing subassembly 102 includes a heating element configured to heat the air flow within the air processing subassembly 102 before directing the airflow into the moisture harvesting subassembly 108. More specifically, the air processing subassembly 102 can include a heating element configured to heat an air flow directed toward the moisture harvesting subassembly 108 to a target desorption temperature to enable desorption of water from the sorbent material within the adsorption chamber 110 during a desorption phase. For example, the air processing subassembly 102 can include a positive temperature coefficient heating element arranged downstream of the air inlet 104 and upstream of an inlet to the moisture harvesting subassembly 108.3.2.1. Air Inlet

[0040] Generally, the air processing subassembly 102 includes an air inlet 104 configured to route intake air between an external environment and the air processing subassembly 102. The air inlet 104 can include one or more thermally insulated conduits that maintain thermal isolation between processed air streams and the surrounding environment, thereby minimizing thermal losses and / or preventing unwanted heat exchange between indoor and outdoor air. In one implementation, the air inlet 104 is configured to engage with an inlet duct of the indoor space fluidically coupled to the outdoor environment, such as an HVAC fresh air inlet duct of the indoor space. However, the air inlet 104 can also be configured to engage with an open window of the indoor space to source outdoor air.

[0041] In one implementation, the air inlet 104 can include a quick-connect collar and / or coupling to facilitate rapid installation, removal, and / or maintenance. The air inlet 104 can be fabricated from rigid and / or semi-rigid materials with integrated insulation layers, and can be dimensioned to support a target airflow rate while maintaining a low pressure drop relative to the physical dimensions and arrangement of the air inlet 104.

[0042] Additionally, the air inlet 104 can include HVAC-compatible mounting flanges configured to interface with standard building penetrations. In one implementation, the mounting flanges can include rectangular and / or circular flanges that align with common HVAC penetration sizes (e.g., 100 mm and / or 150 mm diameters). The flanges can include pre-punched slots for coupling to the mounting bracket 138 of the system 100, enabling flush and / or gasketedAQUA-M02-PCT connections to building envelopes without field fabrication. Thus, the HVAC-compatible mounting flanges can facilitate retrofit installations in residential and / or office environments.3.3. Moisture Harvesting Subassembly

[0043] As shown in FIGURE 2, 3, and 4B, the system 100 can include a moisture harvesting subassembly 108 configured to extract (or “harvest”) water vapor from atmospheric air. The moisture harvesting subassembly 108 can be positioned fluidically between an upstream air processing subassembly 102 and a downstream collection subassembly 114. Therefore, the moisture harvesting subassembly 102 can: receive a processed air flow from the air processing subassembly 102; extract moisture from the processed air flow; and direct a dehumidified air flow and volume of harvested water to the collection subassembly 114.

[0044] In one implementation, the moisture harvesting subassembly 108 includes an adsorption chamber 110 and a heating subsystem configured to support cyclic operation between adsorption and desorption phases. More specifically, the moisture harvesting subassembly 108 includes an adsorption chamber 110 containing a water adsorption sorbent configured to: during an adsorption phase, capture water from the outdoor airflow; and during a desorption phase, release water to generate a humidified desorption flow.

[0045] Generally, the moisture harvesting subassembly 108 can adsorb water vapor from outdoor air during an adsorption phase. In one implementation, the blower 106 can direct conditioned inlet air into the adsorption chamber 110 and through a set of sorbent trays, enabling hygroscopic media (e..g, a sorbent material) to capture water molecules from the gas stream via physisorption and / or chemisorption. In one implementation, the moisture harvesting subassembly 108 can include an inverting baffle geometry that increases contact area between the incoming air and the sorbent while reducing pressure drop across the subassembly. Thus, the moisture harvesting subassembly 108 can maximize vapor uptake per pass, which extends the interval before sorbent saturation and reduces the frequency of phase transitions required during continuous operation.

[0046] Additionally, the moisture harvesting subassembly 108 can desorb captured moisture as a humidity-saturated airflow during a desorption phase. The moisture harvesting subassembly 108 can include a heating subsystem configured to apply thermal energy to the sorbent trays to raise the temperature of the sorbent above an equilibrium point (e.g., a temperature sufficient to release sorbed water molecules). In one implementation, the heating subsystem defines a set of direct heating plates integrated with the sorbent trays and configured to provide temperature control during the desorption phase. The heating subsystem is configured to uniformly heat the sorbent within the sorbent trays while maintaining a target desorption efficiency. In oneAQUA-M02-PCT implementation, the heating subsystem includes a set of direct heating plates distributed between the sorbent trays in a heating plate distribution pattern to more uniformly distribute heat within the moisture harvesting subassembly 108 during the desorption phase. For example, the heating plate distribution pattern can define the position of heating plates within alternating sorbent trays or increase the density of heating plates within the sorbent trays near the bottom of the moisture harvesting subassembly 108 (e.g., near an end of the air flow path through the moisture harvesting subassembly 108) while decreasing the density of the heating plates near within the sorbent trays near the top of the moisture harvesting subassembly 108 (e.g., near a beginning of the air flow path through the moisture harvesting subassembly 108). However, the heating subsystem can include any suitable means for heating the sorbent within the adsorption chamber 100. In one implementation, the heating subsystem of the moisture harvesting subassembly 108 is configured to cooperate with the heating element of the air processing subassembly 102 to heat the air within the adsorption chamber and / or the sorbent material to a target desorption temperature during the desorption phase.

[0047] In one embodiment, the desorption phase generates an outlet air stream having a relative humidity exceeding a threshold value (e.g., approximately 90-99%), and directs the outlet air stream to an inlet of the downstream collection subassembly 114. Thus, the moisture harvesting subassembly 108 can enable uniform heating that minimizes thermal gradients and supports long-term durability of the sorbent.3.3.1. Adsorption Chamber

[0048] In one implementation, the adsorption chamber 110 can include a sealed enclosure configured to house a set of sorbent trays arranged in a parallel and / or stacked configuration. Generally, the adsorption chamber 110 can define an airflow path that promotes contact between incoming conditioned air and the sorbent. More specifically, the adsorption chamber 110 can incorporate internal inlet diffusers and / or a tapered cross-sectional geometry that substantially equalizes air velocity across the sorbent. In one embodiment, the cross-sectional area of the airflow path can vary along a length of the adsorption chamber 110 to promote uniform moisture adsorption throughout the sorbent. The uniform air distribution achieved by these features can mitigate channeling effects and ensure that substantially all segments of the sorbent participate in moisture capture, thereby addressing challenges associated with inconsistent water production across varying ambient humidity levels.

[0049] Generally, the adsorption chamber 110 can be configured to support thermal conditioning of the sorbent during desorption phases. In one implementation, the adsorption chamber 110 can integrate direct-contact heating elements distributed among the sorbent trays to enableAQUA-M02-PCT substantially uniform heating of the sorbent. Alternatively, in a jacketed heat-exchanger configuration, the adsorption chamber 110 can be surrounded by an external fluid jacket coupled to a heat source, such as a hot- water loop and / or waste-heat recovery system. The fluid jacket can indirectly raise the temperature of the sorbent, thereby reducing direct electrical consumption and enabling integration with renewable energy sources and / or building thermal systems. The sorbent thermal conditioning support can accelerate moisture release and shorten overall cycle time, which addresses the challenge of high energy consumption associated with conventional atmospheric water generators.3.3.2. Inverting Baffle

[0050] In one implementation, the adsorption chamber 110 can include an inverting baffle geometry configured to direct airflow along a path that alternates between leftward and rightward deflections as air traverses the chamber. The inverting baffle can define a succession of alternating left-hand and right-hand channel segments that produce a zigzag airflow path. Each segment can be bounded by planar baffle faces inclined at a predetermined deflection angle (e.g., between approximately 15 and 45 degrees) relative to an incoming flow axis.

[0051] In one implementation, the adsorption chamber 110 contains a set of sorbent trays arranged such that the inverting baffle geometry (i.e., a zigzag or oscillating path) is formed between them. The inverting air baffle increases air contact while reducing the pressure drop across the moisture harvesting subassembly 108. Generally, the system 100 is agnostic to sorbent and can operate while containing sorbents characterized by nano-, micro-, meso-, or macroporous structures within the sorbent trays. The system 100 can contain sorbents in various forms, including powder, pellets, shaped bodies, composites, or monoliths. In another implementation, the moisture harvesting subassembly 108 includes an adjustable arrangement of sorbent trays such that the air flow path can be modified based on the sorbents contained within the sorbent trays.

[0052] The zigzag airflow channel geometry can force the process air to invert direction multiple times, thereby renewing the boundary layer on the face of each sorbent tray and increasing the frequency with which air contacts fresh sorbent surfaces. The baffle structure can be machined or formed as an integral part of a tray-support frame to ensure positional accuracy and / or long-term dimensional stability under repeated thermal cycling. Additionally or alternatively, the baffle can be fabricated from corrosion-resistant materials compatible with the selected sorbent. Thus, the inverting baffle can increase air-sorbent contact area while managing pressure drop across the moisture harvesting subassembly 108.AQUA-M02-PCT

[0053] In another implementation, the adsorption chamber 110 can include a set of horizontally arranged parallel sorbent beds and a set of channels between the set of sorbent beds through which air can be directed by the blower. In one implementation, the set of channels is capped at a distal end to force air flow to diffuse through the horizontally arranged sorbent beds. However, the adsorption chamber 110 can include any arrangement of sorbent trays and / or sorbent beds configured to enable contact between inlet air and the sorbent material.3.4. Collection Subassembly

[0054] Generally, the collection subassembly 114 can: receive a humidified desorption air flow from the moisture harvesting subassembly 108; and convert water vapor from the humidified desorption flow into liquid water. As shown in FIGURE 3, the collection subassembly 114 can include a refrigeration subsystem 116, an outlet selection valve 130, a mineralization unit 132, and the air exhaust 118. More specifically, the collection subassembly 114 includes: a refrigeration subsystem 116 configured to condense harvested water from the humidified desorption flow, resulting in a dehumidified air flow; an air exhaust 118 fluidically coupling the collection subassembly 114 to the outdoor environment and directing the dehumidified desorption flow from the refrigeration subsystem 116 toward the outdoor environment; and a water outlet. The collection subassembly 114 can be constructed as a modular unit to facilitate maintenance and component replacement. Additionally, the collection subassembly 114 can utilize food-grade materials along water-contacting surfaces to maintain water purity. In one implementation, the collection subassembly 114 collects condensed water on a dripping tray, which subsequently directs the water to a staging container. A water pump subsystem of the collection subassembly 114 directs water flow from the dripping tray to a water outlet.

[0055] In one implementation, the collection subassembly 114 can condense the humidified desorption air by cooling the incoming airflow to below a dew point temperature. The collection subassembly 114 can employ a closed-loop vapor-compression cycle executed by the refrigeration subsystem 116 to achieve this cooling. In one implementation, the collection subassembly 114 can regulate an evaporator wall temperature and / or air residence time within the cycle to increase water yield per unit of energy consumed. Thus, the collection subassembly 114 addresses the challenge of maintaining consistent water production across varying ambient humidity levels while minimizing energy consumption.

[0056] Following condensation of the harvested water from the desorption flow, the collection subassembly 114 can expel cooled, dehumidified process air through the air exhaust 118. The air exhaust 118 can be adapted to interface with building HVAC penetrations and / or external venting pathways to direct the dehumidified process air (e.g., exhaust air) to the outdoorAQUA-M02-PCT environment. In this way, the collection subassembly 114 can prevent recirculation of dry, chilled air into the indoor space, thereby addressing the challenge of integrating atmospheric water generators into indoor environments without disturbing indoor environmental conditions.3.4.1. Refrigeration Subsystem

[0057] The collection subassembly 114 can include a refrigeration subsystem 116 configured to condense water vapor from the humidified desorption air received from the moisture harvesting subassembly 108. Generally, the refrigeration subsystem 116 can include a vapor-compression refrigeration circuit including an evaporator coil, a rotary compressor, an expansion valve, and / or an accumulator.

[0058] The evaporator coil can cool the humidified air stream to a temperature at or below a dew point temperature, thereby inducing phase change of the water vapor into condensed water droplets on the surface of the evaporator coil. The refrigeration subsystem 116 can further separate and channel the condensate toward a collection region via gravity-assisted drainage and / or airflow management structures integrated with the evaporator coil.

[0059] In one implementation, the refrigeration subsystem 116 can include an in-line moisture trap positioned downstream of the evaporator coil. In one implementation, the in-line moisture trap is configured to: capture entrained water droplets from the dehumidified desorption flow (e.g., before the dehumidified air exits toward the air exhaust 118); and direct the water droplets toward the water outlet.3.4.2. Outlet Selection Valve

[0060] In one implementation, the collection subassembly 114 can include an outlet selection valve 130 positioned downstream of the refrigeration subsystem 116. The outlet selection valve 130 can selectively route collected water to different destinations based on operational conditions. More specifically, the water outlet is fluidically coupled to the water tank interface 122 and an external reservoir 128. The water outlet can further include an outlet selection valve 130 operable in: a first configuration directing collected water toward the water tank interface 122; and a second configuration directing collected water toward the external reservoir 128. For example, in response to the fill level reading of a water tank indicating a fill level greater than or equal to a maximal fill level threshold, the controller is configured to actuate the outlet selection valve 130 to the second configuration to direct water to the external reservoir. In one implementation, in response to the fill level reading of a water tank indicating a fill level greater than or equal to a maximal fill level threshold, the controller is configured to operate the system to stop processing air and producing water such as via deactivating the air processing subassembly 102 to stop outdoor air intake.AQUA-M02-PCT

[0061] In one implementation, the outlet selection valve 130 includes a valve body with at least two outlet ports, wherein a first outlet port can be fluidically coupled to the water tank interface 122 and a second outlet port can be fluidically coupled to an external reservoir 128. The outlet selection valve 130 can receive actuation signals from the controller, which determines routing based on real-time sensor data, including tank fill-level reading and / or water quality parameters.

[0062] The outlet selection valve 130 can include an electronically actuated drive assembly configured to reposition a flow gate between the outlet ports (e.g., actuate the flow gate to enable flow through a target outlet port while blocking the non-target outlet port). In one implementation, the electronically actuated drive assembly includes a latching solenoid and / or a micro-stepping gear motor capable of achieving repositioning times. The drive assembly can accept low-voltage pulse-width modulation and / or logic-level control signals from the controller, enabling closed-loop scheduling synchronized with phase transitions of the water generation cycle.

[0063] The outlet selection valve 130 can provide dynamic overfdl prevention in cooperation with the fill level sensor 124. When the fill level sensor 124 detects a high-level threshold condition in a downstream tank, the outlet selection valve 130 can autonomously divert flow away from the tank to an alternative outlet port without user intervention. Thus, the outlet selection valve 130 can reduce the risk of tank overflow during operation of the system 100.3.4.3. Mineralisation Unit

[0064] In one implementation, the collection subassembly 114 can include a mineralization unit 132 configured to introduce dissolved minerals into the collected water. The mineralization unit 132 can be positioned downstream of the refrigeration subsystem 116 so that harvested water flows through mineral media prior to being outlet to a water tank or external reservoir. More specifically, the mineralization unit is configured to release minerals into the harvested water. In one implementation, the mineralization unit is implemented as a mineralization column as described in the U.S. Provisional Application No. 63 / 746,994.

[0065] The mineralization unit 132 can contain a replaceable cartridge holding food-grade mineral media, which may include calcium, magnesium, potassium, and / or other ions selected to achieve a target water hardness and / or flavor profile. In one implementation, the mineralization unit 132 can provide controlled mineral dosing by dissolving calibrated quantities of minerals as water passes through the media, thereby raising hardness and / or alkalinity to predefined set-points (e.g., between approximately 50 and 150 mg / L total dissolved solids). Additionally, the mineralization unit 132 can enhance water quality by imparting a balanced mineral profile toAQUA-M02-PCT condensed water that may otherwise be low in dissolved solids, thereby improving water properties and meeting consumer acceptance standards for drinking water.3.4.4. Air Exhaust

[0066] As shown in FIGURE 1, the collection subassembly 114 can include the air exhaust 118 configured to channel dehumidified air from the refrigeration subsystem 116 to an external environment. The air exhaust 118 can be fluidically coupled to an outlet of the refrigeration subsystem 116 and can be constructed from corrosion-resistant materials to withstand prolonged exposure to moisture-laden and / or moisture-depleted airstreams. More specifically, the air exhaust 118 is configured to engage with an exhaust duct of the indoor space fluidically coupled to the outdoor environment (e.g., a HVAC exhaust duct).

[0067] In one implementation, the air exhaust 118 incorporates acoustic insulation and / or anti-vibration mounts to reduce mechanical noise transmission, thereby supporting deployment in residential and / or commercial environments. Generally, the air exhaust 118 can interface with building ductwork via standardized flange geometry and / or a gasket configured to mate with existing residential and / or commercial exhaust duct. More specifically, the air exhaust 118 can create a sealed discharge path that prevents processed air from re-entering indoor spaces, thereby mitigating latent-heat reintroduction and / or sustaining thermal comfort within the installation environment. The cross-sectional area and / or length of the air exhaust 118 can be selected to minimize back pressure and ensure efficient airflow through the system 100.3.5. Water Tank Interface

[0068] As shown in FIGURES 1 and 5, the water harvesting system 100 can include a water tank interface 122 configured to fluidically couple the water outlet of the collection subassembly 114 to an internal volume of a water tank 158 of a companion water dispenser. Generally, the water tank interface 122 defines a continuous, low-restriction flow path that conveys harvested water into the water tank 158 while preventing intermediate exposure to ambient contaminants. More specifically, the water tank interface 122: is disposed within a through-bore 160 of a water tank 158 of the water dispenser; fluidically couples the water outlet to an internal volume of the water tank 158; and is configured to direct the harvested water from the water outlet into the internal volume of the water tank 158. Further, the water tank interface 122 includes: a water hose 144 fluidically connected to the water outlet and arranged through the through-bore 160 of the water tank 158; and a sealing gasket 146 configured to fluidically seal an interface between the water hose 144 and the through-bore 160 of the water tank 158. In one implementation, the water tank interface 122 is disposed (e.g., arranged, seated, and / or removably coupled) within a through-bore 160 arranged on a top surface of the water tank 158.AQUA-M02-PCT

[0069] The water tank interface 122 can include a bidirectional mounting flange configured to accommodate adaptive tank geometry. More specifically, the bidirectional mounting flange can include a symmetrical configuration with a multi-hole bolt pattern that supports both top-mount and side-mount orientations on differently shaped dispenser tanks. The bidirectional mounting flange can distribute mechanical loads across the mounting surface and / or simplify field alignment during installation. Additionally, the bidirectional mounting flange can permit retrofitting to legacy tanks without requiring secondary brackets and / or modification to upstream subassemblies.

[0070] The water tank interface 122 can include a fill level sensor 124 pocket configured to enable real-time fill level detection. In one implementation, the fill level sensor 124 pocket includes a dedicated recess and / or boss positioned adjacent to a hose entry that houses a level transducer, such as an optical and / or capacitive sensor. The fill level sensor 124 pocket can position the sensing element (e.g., a fill level sensor) in close proximity to the interior of the tank while isolating sensor electronics from direct water contact, thereby enabling accurate and / or long-term level measurement. Thus, the fill level sensor 124 pocket can facilitate automated initiation and / or termination of water generation cycles based on actual storage capacity.

[0071] The water tank interface 122 can include a food-grade sealing gasket 146 configured to maintain a fluid-tight connection at the interface. In one implementation, the food-grade sealing gasket 146 includes an elastomeric annulus fashioned from silicone and / or EPDM that encircles a water hose 144 within a through-bore 160. When compressed, the food-grade sealing gasket 146 can generate a circumferential compression seal that prevents leakage and / or ingress of contaminants. Additionally or alternatively, the food-grade sealing gasket 146 can dampen vibration transfer from the hose to the tank. The water tank interface 122 can further include an integrated hose coupling stub located on a system side of the interface that mates with a complementary quick-connect fitting on a supply hose, thereby enabling repeatable, tool-less attachment and / or establishing a defined flow cross-section that minimizes head loss.3.5.1. Sealing Gasket

[0072] As shown in FIGURE 5, the water tank interface 122 can include a sealing gasket 146 configured to provide a fluid-tight seal between the water hose 144 and a through-bore 160 of an external water tank 158. The sealing gasket 146 can include an elastomeric or polymeric material, such as food-grade silicone and / or EPDM, that creates a continuous liquid barrier between the outer surface of the water hose 144 and the through-bore 160 wall, thereby preventing leakage of harvested water during operation and / or handling.AQUA-M02-PCT

[0073] In one implementation, the sealing gasket 146 can be formed with an annular concentric geometry sized to seat concentrically around the outer diameter of the water hose 144 while nesting inside the through-bore 160 of the water tank 158. The concentric arrangement can produce uniform radial compression when the water hose 144 is inserted, establishing balanced sealing pressure that remains stable under varying internal water pressures.

[0074] Additionally or alternatively, the sealing gasket 146 can include a flanged seating shoulder including an outward-facing flange configured to abut the exterior surface of the water tank 158. The flanged seating shoulder can prevent over-insertion of the sealing gasket 146, distribute axial loads generated during movement of the water hose 144, and / or provide visual confirmation that the seal is correctly seated.3.5.2. Water Hose

[0075] Generally, the water tank interface 122 can include a water hose 144 configured to convey water from the water outlet of the collection subassembly 114 to a water tank 158 of a downstream dispensing unit. The water hose 144 can provide a leak-tight interface with a through-bore 160 of the tank, such that treated and / or mineralized water can be transferred without spillage or contamination. In one implementation, the water hose 144 cooperates with the sealing gasket 146 to establish a watertight junction at the tank interface, which can also preserve the accuracy of the fill level sensor 124 by preventing false level changes due to leakage.

[0076] In one implementation, the water hose 144 can include a food-grade polymer construction, such as silicone or thermoplastic elastomer, certified for potable-water contact. The inert composition of the water hose 144 can eliminate leachables that could otherwise compromise taste or mineral balance, thereby preserving the purity of water delivered to the dispenser tank.3.5.3. Fill Level Sensor

[0077] Generally, the water tank interface 122 can include a fill level sensor 124 configured to detect the volume and / or height of water present within a water tank 158 of the water harvesting system 100. More specifically, the water tank interface 122 further includes a fill level sensor 124 configured to sense the water level of the water tank 158. For example, the fill level sensor 124 can define a physical fill level sensor (e.g., a float sensor) or an optical sensor (e.g., an ultrasonic level sensor).

[0078] The fill level sensor 124 can repeatedly transmit water level data to the controller via a wired and / or wireless interface. In one implementation, the controller can utilize fill level readings to regulate operation of the moisture harvesting subassembly 108, including initiatingAQUA-M02-PCT or terminating water generation cycles, actuating the outlet selection valve 130 to direct water to an appropriate reservoir, and / or preventing overflow or dry operation. Thus, the fill level sensor 124 can enable closed-loop harvesting by allowing a control algorithm to synchronise adsorption-desorption cycles with user consumption patterns, thereby reducing redundant condensation events and / or lowering energy consumption per unit volume produced.

[0079] In one embodiment, the fill level sensor 124 can incorporate a non-contact sensing element selected from capacitive, ultrasonic, optical, and / or frequency-modulated radar transducers. Thus, the fill level sensor 124 can enable the controller to measure dielectric displacement and / or time-of-flight above a water surface; access a geometry of the water tank 158; and calculate a fill level or remaining volumetric capacity of the water tank 124.

[0080] Additionally or alternatively, the fill level sensor 124 can include a through-bore 160 mounting flange configured to mate with a through-bore 160 of the water tank 158. The through-bore 160 mounting flange can include a circular flange with dual o-ring grooves dimensioned to provide axial alignment, vibration isolation, and / or a sanitary barrier without requiring additional fasteners inside a wetted zone of the water tank 158.4. Controller and Method

[0081] Generally, the water harvesting system 100 can include a controller configured to coordinate the operation of the system 100. The controller can include a microprocessor-based printed circuit board assembly that receives real-time input from a sensor array and executes a control algorithm managing the timing and parameters of adsorption, desorption, and condensation phases. The controller can adjust operational variables such as air flow rate, heating intensity, and refrigeration cycle parameters based on sensor data, including temperature, humidity, pressure, and air quality measurements. The controller can interface with a user interface system and can be electrically connected to all major subassemblies for centralized system management, thereby addressing the challenge of maintaining consistent water production over a wide range of ambient conditions.

[0082] In one implementation, the controller can perform closed-loop adsorption feedback regulation during the adsorption phase. The controller can modulate blower speed and monitor inlet and outlet humidity to maintain a user-defined adsorption efficiency set-point (e.g., between approximately 70 and 95 percent). If the real-time efficiency falls below a threshold value, the controller can automatically lengthen the phase duration and / or adjust airflow until equilibrium is restored. This closed-loop regulation can prevent premature phase switching that would otherwise reduce total water yield.AQUA-M02-PCT

[0083] Additionally, the controller can implement adaptive blower speed modulation to compensate for changing pressure drop across the sorbent trays as the sorbent loads with moisture. The controller can execute a proportional-integral-derivative algorithm that adjusts the duty cycle of a variable-frequency drive associated with the blower 106. The algorithm can preserve a target linear velocity (e.g., between approximately 0.5 and 2.0 meters per second) through the inverting baffle, which can promote uniform sorbent utilization and reduce energy cost per unit volume of water produced. This adaptive modulation addresses the challenge of high energy consumption by dynamically modulating airflow rather than operating at fixed speeds.

[0084] Further, the controller can perform data logging and telemetry transmission for remote diagnostics and preventive maintenance. Operational parameters and performance statistics can be written to non-volatile memory at configurable intervals (e.g., between approximately 1 and 60 minutes). The logged data can be transmitted over a communication interface such as USB and / or a wireless module to an external device or network. The controller can log and highlight operational trends such as increasing pressure drop or declining sorbent capacity, thereby enabling timely service interventions that maintain system reliability and consistent water output quality.4.1. Feedback Control

[0085] In one implementation, the controller is configured to monitor and adjust operational parameters according to sensor data. More specifically, the controller monitors: the adsorption rate during the adsorption phase, the desorption rate during the desorption phase, and the condensation rate during the condensation phase, while monitoring energy consumption across all phases. The controller can, therefore, adjust system parameters to increase the energy efficiency of each phase and coordinate the timing of the transition between the adsorption and desorption phases.

[0086] In another implementation, the controller can monitor an inlet dew point and an outlet dew point for the moisture harvesting subassembly 108, enabling the system 100 to control the duration and intensity of both adsorption and desorption phases. More specifically, the controller can continue the adsorption phase until the controller detects less than a threshold inlet-outlet dew point difference. Alternatively, the controller can continue the adsorption phase until a threshold adsorption efficiency is reached (e.g., a minimum adsorption efficiency). Thus, the controller ensures high water production efficiency while reducing energy consumption.

[0087] Further, the controller can be configured to: access a fill level reading captured by the fill level sensor; and in response to the fill level reading indicating a fill level less than a minimal fillAQUA-M02-PCT level threshold, operate the air processing subassembly 102, the moisture harvesting subassembly 108, and the collection subassembly 114 to condense harvested water.

[0088] Generally, the controller can execute a feedback control protocol to acquire real-time data from the sensor array, including temperature sensors, humidity sensors, pressure sensors, and / or air quality monitors, to monitor environmental and internal system conditions. The feedback control protocol can compute dew-point differentials between the inlet and outlet of the moisture harvesting subassembly 108 to determine current adsorption and desorption efficiency. Based on these measurements, the feedback control protocol can dynamically adjust operational parameters, including the duration of adsorption, desorption, and / or condensation phases, the speed of the blower 106, and / or the set-points for the heating subsystem and / or the refrigeration subsystem 116. The feedback control protocol can implement a feedback loop that modulates operational parameters to maximize water production efficiency (e.g., measured as litres of water produced per kilowatt-hour of energy consumed). The controller can execute control logic, including, but not limited to, threshold-based phase transitions, proportional-integral-derivative control algorithms for blower speed and / or temperature regulation, and / or adaptive scheduling of phase cycles in response to changing environmental conditions. Thus, the feedback control protocol addresses low efficiency and high energy consumption by continuously optimizing operational parameters based on real-time conditions, while also enabling consistent water production across a wide range of ambient humidity levels.

[0089] More specifically, the feedback control protocol can include an adaptive phase scheduler. The adaptive phase scheduler can access a scheduler table stored in non-volatile memory that defines nominal durations for adsorption, desorption, and / or condensation phases. The adaptive phase scheduler can adaptively overwrite each entry in the scheduler table at runtime based on real-time efficiency metrics. In one implementation, the adaptive phase scheduler records cumulative litres-per-kWh for each phase and applies an exponential weighting algorithm to bias future schedules toward the most efficient patterns. The adaptive phase scheduler thereby delivers progressive self-optimization without external tuning, further reducing energy consumption and improving water production consistency under varying environmental conditions.

[0090] In one implementation, the controller can operate the system 100 to harvest an amount of water consistent with predicted water consumption patterns associated with a set of indoor and outdoor conditions. More specifically, the controller can predict water consumption patterns based on environmental parameters such as indoor temperature, indoor humidity, outdoor temperature, and outdoor humidity. In response to predicting an increased water consumptionAQUA-M02-PCT based on the environmental parameters, the controller can increase the rate of water harvesting by the system. For example, the controller can increase an outdoor air intake rate by increasing the blower speed of the air processing subassembly, thereby increasing the rate of water harvesting. More specifically, the controller can be configured to: predict a water consumption amount based on environmental parameters; and operate the air processing subassembly, the moisture harvesting subassembly, and the collection subassembly to harvest water corresponding to the water consumption amount. For example, the controller can predict the water consumption amount (e.g., a volume of water consumed over a target period of time), and operate the system to harvest water to yield at least the predicted water consumption amount over the target period of time.

[0091] Additionally, the feedback control protocol can interface with the fill level sensor 124 to prevent water-tank overfill. Input from the fill level sensor 124 can be averaged by the feedback control protocol. When the water column reaches a maximum threshold, the feedback control protocol can disable the condensation phase and / or actuate the outlet selection valve 130 to divert any additional condensate to an auxiliary reservoir. Thus, the controller can coordinate the feedback control protocol via the water tank interface 122, thereby addressing inadequate integration between water generation units and downstream water dispensers or tanks by providing reliable level sensing and automated overflow prevention.4.2. Method for Harvesting Water

[0092] Generally, a method for harvesting water from atmospheric humidity can include a set of controller-executed steps that operate components and subassemblies of the water harvesting system 100 to harvest water from outdoor air and deliver harvested water to a cooperating water dispenser and / or external reservoir 128.

[0093] In one implementation, the method can include, by a controller of the water harvesting system 100, operating an air processing subassembly 102 to source and condition inlet air from an outdoor environment. More specifically, the controller can operate a blower 106 of the air processing subassembly 102 to draw outdoor air through the air inlet 104, along a defined inlet airflow path extending from an outdoor environment and toward an interior region containing a moisture harvesting subassembly 108. Additionally, the controller can operate the air processing subassembly 102 to filter and / or otherwise condition the outdoor air prior to exposure of the outdoor air to a sorbent. For example, the controller can actuate an air filtration subsystem arranged along the airflow path to remove particulates and / or contaminants from the outdoor air and thereby generate filtered inlet air. In one implementation, the controller can adjust a blower speed, a damper position, and / or a bypass valve position to regulate a volumetric flow rate, aAQUA-M02-PCT static pressure, and / or a residence time of the filtered inlet air within the air processing subassembly 102 to generate conditioned inlet air exhibiting target flow and temperature characteristics.

[0094] Further, the method can include, by the controller, operating the moisture harvesting subassembly 108 to adsorb moisture from the conditioned inlet air into a sorbent within the adsorption chamber 110. More specifically, the controller can direct the blower 106 of the air processing subassembly 102 to maintain a pressure differential that drives the conditioned inlet air into the adsorption chamber 110 through an inlet opening of the adsorption chamber 110. In one implementation, the controller can regulate an airflow path within the adsorption chamber 110 by controlling a flow-directing element such as an inverting baffle, thereby forcing the conditioned inlet air to pass through one or more sorbent trays arranged in series and / or in parallel. The controller can thereby cause moisture within the conditioned inlet air to adsorb into a sorbent supported by the sorbent trays, such that the adsorption chamber 110 outputs dehumidified outlet air toward an exhaust region.

[0095] Additionally, the controller can operate a sensor array associated with the adsorption chamber 110 to monitor an adsorption state of the sorbent during passage of the conditioned inlet air. In particular, the method can include, by the controller, monitoring adsorption metrics data generated from the sensor array and determining whether a moisture-saturation condition exists in the adsorption chamber 110. In one implementation, the controller can calculate a running adsorption capacity value and compare the running adsorption capacity value to a moisture saturation threshold of the sorbent bed configuration. Additionally or alternatively, the controller can detect a change in humidity of the dehumidified outlet air that exceeds a threshold, and can thereby identify that the sorbent is approaching saturation. When the controller identifies that the running adsorption capacity value exceeds the moisture saturation threshold, the controller can transition the water harvesting system from a sorption phase to a desorption phase, as described below.

[0096] Further, the method can include, by the controller, operating a heating subsystem of the moisture harvesting subassembly 108 to desorb moisture from the sorbent into a humidified desorption flow. In one implementation, the controller can activate one or more electrical heaters and / or fluid-based heaters thermally coupled to the sorbent trays. The controller can modulate a heating power level, a duty cycle, and / or a flow rate of a heating fluid to raise the temperature of the sorbent throughout a target range (e.g., a temperature band suitable to release adsorbed water from the sorbent without degrading the sorbent). More specifically, the controller can execute a closed-loop temperature-control routine using temperature measurements from the sensor arrayAQUA-M02-PCT to maintain a desired desorption temperature profile over time. As the sorbent temperature increases, the controller can continue to operate the blower 106 and / or a dedicated desorption fan to drive process air through and / or along the heated sorbent, thereby generating a humidified desorption air stream that leaves the adsorption chamber 110 and travels toward a collection subassembly 114.

[0097] Additionally, the controller can adjust a sequence and / or grouping of sorbent trays that receive heating, such that a subset of trays undergoes desorption while another subset undergoes adsorption, in implementations that support staggered or multi-bed operation. Then, the method can include, by the controller, operating the collection subassembly 114 to condense moisture carried by the humidified desorption air and to collect condensate water. More specifically, the controller can command the blower 106 and / or another airflow-driving device to direct the humidified desorption flow from the adsorption chamber 110 into a refrigeration subsystem 116 of the collection subassembly 114. In one implementation, the controller can regulate a fan speed and / or flow-control devices between the adsorption chamber 110 and an inlet of the refrigeration subsystem 116 so that the humidified desorption flow arrives at the refrigeration subsystem 116 within target temperature and flow-rate ranges.

[0098] The controller can also operate the refrigeration subsystem 116 to cool the humidified desorption flow below a dew point temperature to generate condensed water droplets. For example, the refrigeration subsystem 116 can include a heat exchanger, a condenser, a compressor, and an expansion device, and the controller can regulate a compressor speed, a refrigerant expansion valve position, and / or an evaporator fan speed to achieve a target evaporator surface temperature and a target heat-extraction rate. The humidified desorption air can thereby contact the cooled surfaces of the refrigeration subsystem 116 and yield condensed water droplets that coalesce and form a raw condensate water stream.

[0099] In one implementation, the controller can concurrently operate one or more structural elements of the collection subassembly 114, such as channels, inclined surfaces, or baffles, to guide condensed water droplets toward a drainage region. For example, the controller can actuate a condensate collection tray, a tilting baffle, or a controllable flap to ensure that gravity-driven flow and / or capillary effects direct the condensed water into a collection region. The controller can then operate the collection subassembly 114 to separate and collect condensate, thereby producing raw condensate water and a dehumidified exhaust air stream.

[0100] Additionally, the controller can route the dehumidified exhaust air stream from the refrigeration subsystem 116 toward the air exhaust 118 of the collection subassembly 114. In one implementation, the controller can operate the blower 106 to direct the dehumidified exhaustAQUA-M02-PCT airflow through an air exhaust 118 through-bore 160 and toward the outdoor environment, and can optionally modulate the exhaust flow rate to manage acoustic output, backpressure, and thermal exchange with the environment.

[0101] Further, the method can include, by the controller, operating the collection subassembly 114 and downstream water-treatment components to treat the raw condensate water and generate liquid water suitable for delivery to the water dispensing unit. In one implementation, the controller can route the raw condensate water through a purification stage of the collection subassembly 114, such as a filtration module, an ultraviolet disinfection module, and / or a chemical-treatment module. The controller can regulate flow-control valves, pumps, and / or contact times to ensure that the raw condensate water achieves a target purification level and thereby becomes purified condensate water.

[0102] Additionally or alternatively, the controller can direct the purified condensate water through a mineralization unit 132 arranged within the collection subassembly 114, where the mineralization unit 132 can introduce dissolved minerals into the purified condensate water to form treated liquid water with a desired mineral content and taste profile. The controller can modulate a flow rate through the mineralization unit 132 to control a contact time with mineral media and thereby adjust mineralization.

[0103] The controller can operate an outlet selection valve 130 of the collection subassembly 114 to select an outlet path corresponding to the water hose 144, thereby configuring the outlet selection valve 130 in a selected outlet valve path configuration. The controller can then operate one or more pumps and / or gravity-fed flow paths so that the treated liquid water flows through the outlet selection valve 130, through the water hose 144, across the sealing gasket 146 interface, and into the water tank 158 of the water dispensing unit via the through-bore 160. Thus, by executing the above-described steps, the controller of the water harvesting system 100 can operate the air processing subassembly 102, the moisture harvesting subassembly 108, the collection subassembly 114, and the water tank interface 122 in a coordinated manner to harvest water from outdoor air, condense and treat the harvested water, and deliver the treated water to the water dispensing unit via a through-bore 160 arranged on the non-dispensing interface of the water tank 158.

Claims

AQUA-M02-PCT CLAIMSWe Claim:

1. A water harvesting system configured to cooperate with a water dispenser, the water harvesting system comprising:• an air processing subassembly comprising:o an air inlet fluidically coupling the air processing subassembly to an outdoor environment; ando a blower configured to direct an outdoor air flow into the air inlet;• a moisture harvesting subassembly:o comprising an adsorption chamber containing a water adsorption sorbent configured to:■ during an adsorption phase, capture water from the outdoor air flow; and ■ during a desorption phase, release water to generate a humidified desorption flow;• a collection subassembly comprising:o a refrigeration subsystem configured to condense harvested water from the humidified desorption flow, resulting in a dehumidified desorption flow; o an air exhaust:■ fluidically coupling the collection subassembly to the outdoor environment; and■ directing the dehumidified desorption flow from the refrigeration subsystem toward the outdoor environment; and o a water outlet; and• a water tank interface:o disposed within a through-bore of a water tank of the water dispenser; o fluidically coupling the water outlet to an internal volume of the water tank; and o configured to direct the harvested water from the water outlet into the internal volume of the water tank.

2. The water harvesting system of Claim 1 :• wherein the water tank interface further comprises:o a fill level sensor configured to sense a water level of the water tank;• further comprising a controller configured to:o access a fill level reading captured by the fill level sensor; andAQUA-M02-PCT o in response to the fill level reading indicating a fill level less than a minimal fill level threshold, operate the air processing subassembly, the moisture harvesting subassembly, and the collection subassembly to condense harvested water.

3. The water harvesting system of Claim 2, wherein:• the water outlet:o is fluidically coupled to:■ the water tank interface; and■ an external reservoir; ando further comprises an outlet selection valve operable in:■ a first configuration directing collected water toward the water tank interface; and■ a second configuration directing collected water toward the external reservoir; and• wherein the controller is further configured to, in response to the fill level reading indicating a fill level greater than or equal to a maximal fill level threshold, actuate the outlet selection valve to the second configuration.

4. The water harvesting system of Claim 1, wherein the collection subassembly further comprises a mineralization unit configured to release minerals into the harvested water.

5. The water harvesting system of Claim 1, wherein:• the air inlet is configured to engage with an inlet duct of the indoor space fluidically coupled to the environment; and• the air exhaust is configured to engage with an exhaust duct of the indoor space fluidically coupled to the environment.

6. The water harvesting system of Claim 1, further comprising a mounting bracket defining:• an air inlet port configured to align the air inlet to an inlet duct of the indoor space; and • an air outlet port configured to align the air exhaust to an exhaust duct of the indoor space.

7. The water harvesting system of Claim 6, wherein:AQUA-M02-PCT • the air inlet port defines an anti-vibration material configured to reduce mechanical noise transmission; and• the air outlet port defines the anti-vibration material.

8. The water harvesting system of Claim 1, wherein the water tank interface is disposed within a through-bore arranged on a top surface of the water tank.

9. The water harvesting system of Claim 1, wherein the water tank interface comprises: • a water hose:o fluidically connected to the water outlet; ando arranged through the through-bore of the water tank; and• a sealing gasket configured to fluidically seal an interface between the water hose and the through-bore of the water tank.

10. The water harvesting system of Claim 1, wherein the water tank interface comprises a fill level sensor mount configured to support a fill level sensor within a water tank.

11. The water harvesting system of Claim 1, further comprising a controller configured to:• predict a water consumption amount based on environmental parameters; and• operate the air processing subassembly, the moisture harvesting subassembly, and the collection subassembly to harvest water corresponding to the water consumption amount.

12. The water harvesting system of Claim 1, further comprising a mounting bracket defining:• a first shelf configured to removably receive and support the air processing subassembly • a second shelf configured to removably receive and support the moisture harvesting subassembly; and• a third shield configured to removably receive and support the collection subassembly.

13. The water harvesting system of Claim 1, wherein the air processing subassembly further comprises an insulated internal compartment configured to thermally isolate outdoor air from an indoor space.AQUA-M02-PCT 14. The water harvesting system of Claim 1, wherein the blower is further configured to modulate airflow to achieve a target residence time of the outdoor air flow within the adsorption chamber.

15. The water harvesting system of Claim 1, wherein the water harvesting subsystem further comprises a heating subsystem configured to apply thermal energy to the water adsorption sorbent.

16. The water harvesting system of Claim 1, wherein the collection subassembly further comprises a moisture trap configured to:• capture entrained water droplets from the dehumidified desorption flow; and• direct the water droplets toward the water outlet.

17. A method for operating a water harvesting system configured to cooperate with a water dispenser, comprising, by a controller of the water harvesting system:• operating a blower of an air processing subassembly to direct an outdoor air flow through an air inlet and into an adsorption chamber of a moisture harvesting subassembly;• operating the moisture harvesting subassembly to adsorb moisture from the outdoor air flow into a sorbent arranged within the adsorption chamber;• operating a heating subsystem of the moisture harvesting subassembly to desorb moisture from the sorbent into a humidified desorption flow;• operating the blower to direct the humidified desorption flow into a refrigeration subsystem of a collection subassembly;• operating the refrigeration subsystem to condense the humidified desorption flow to generate:o collected water; ando a dehumidified airflow;• operating the blower to direct the dehumidified airflow through an air exhaust and toward the outdoor environment; and• operating a water dispensing subsystem to direct the collected water into a water tank of the water dispenser.

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