Passive Fluid Dosing Capsule for Controlled Additive Diffusion

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Solution Overview

Problem

Conventional fluid dispensing systems face challenges in delivering consistent and controlled amounts of additives, often leading to inefficient consumption and overdosing due to complex sensor and pump requirements, degradation of additive materials, and incompatibility with existing systems.

Innovation Solution

A fluid dispensing system that passively doses a fluid with a consumable additive using a capsule within a reservoir, where the additive diffuses into a static fluid volume, allowing for controlled and consistent dispensing of a predetermined concentration, minimizing additive consumption and preventing overdosing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If active dosing with sensors and pumps is used, then desired concentration control is achieved, but device complexity and cost increase

Engineering Contradiction:

Improveconcentration controlVSAvoidsystem complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent extracts the dosing function from complex active systems (sensors and pumps) and implements it through a simple passive capsule structure. The capsule contains pre-measured additive amounts and releases them through diffusion, eliminating the need for electronic control components while maintaining concentration control.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The capsule system is self-regulating through diffusion principles. The capsule automatically controls additive release based on concentration gradients between its interior and the surrounding fluid, requiring no external sensors or pumps to maintain desired concentration levels.

Inventive Principle:

Principle #25Self-service

2Device complexity

If passive dosing with solid pellets is used, then device complexity is reduced, but additive consumption becomes inconsistent

Engineering Contradiction:

Improvesystem complexityVSAvoiddosing consistency

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent changes the physical parameters of the dosing system by enclosing additive material in a capsule with controlled porosity and surface area. This standardization ensures consistent diffusion rates and additive release, making passive dosing reliable without requiring complex active control mechanisms.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If high solubility additive is used for flowing water dosing, then dosing efficiency increases, but additive depletion occurs quickly

Engineering Contradiction:

Improvedosing efficiencyVSAvoidadditive life

Core Design Contradiction:

ProductivityVSDuration of action of moving object

Solution Approach 1:

The capsule system provides periodic dosing as fluid flows through it, with the additive releasing in controlled increments rather than all at once. This extends the functional life of the additive while maintaining dosing efficiency, as the capsule gradually depletes its contents over time rather than being quickly exhausted.

Inventive Principle:

Principle #19Periodic action

4Productivity

If capsule openings are enlarged to increase additive diffusion, then dosing rate increases, but pressure differential control becomes difficult

Engineering Contradiction:

Improveadditive diffusion rateVSAvoidpressure differential

Core Design Contradiction:

ProductivityVSStress or pressure

Solution Approach 1:

The patent applies local quality by creating multiple small openings distributed across the capsule surface rather than one large opening. This distributes the pressure differential across many points while maintaining adequate total diffusion area, allowing controlled additive release without excessive pressure buildup.

Inventive Principle:

Principle #3Local quality

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system simplifies additive delivery, conserves additive by isolating it from degrading fluid flow, and prevents overdosing by maintaining saturation equilibrium, ensuring consistent dosing and extended additive life.

Implementation Method 1

one or more openings configured to control a rate at which the additive material diffuses into the static fluid volume from a volume of fluid within the capsule

Methodology Applied

Scientific EffectDiffusion: Diffusion

Data Source

PatentUS11225423B1Systems and methods for passively dosing a fluid with consumable additives

Publication Date: 2022.01.18 MULTIPURE INT

AI summary

Systems and methods for passively dosing fluid with a consumable additive in a controlled and measured fashion. A capsule containing the additive is placed in a fluid reservoir and passively doses static water in the reservoir over time. Instead of directly exposing the additive to the dispensing system's fluid, fluid within the capsule's internal volume becomes saturated with dissolved additive and then diffuses to the dispensing system's fluid through one or more openings. The one or more openings are sized so the that the diffusion occurs at a predetermined rate, and are positioned on the capsule to prevent an undesirable fluid exchange which extends the life of the additive and maintains a constant diffusion rate. The size of the cartridge can be selected to control the volume of fluid that is passively dosed within the reservoir, thereby controlling an overall concentration of additive in the total volume dispensed.