Automatic Preservative Gas Replenishment via Compressible Bladder

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Solution Overview

Problem

Existing methods for preserving perishable substances like wine fail to effectively prevent degradation due to oxygen exposure, often requiring complex and expensive systems or introducing contaminants, and lack reliable methods for maintaining a vacuum or consistent gas supply.

Innovation Solution

A system using volumetric displacement between a flowable substance and a preservative gas, with a compressible bladder that can be automatically replenished, ensuring a consistent gas supply without pressurizing the bladder, and maintaining the integrity of the vessel's contents.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If pressurized systems are used to maintain preservative gas supply, then gas supply reliability is improved, but system complexity and cost increase

Engineering Contradiction:
Improvegas supply reliabilityVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the pressurization function from the gas supply system by using a flexible bladder that passively expands and contracts based on pressure differentials during dispensing, eliminating the need for active pressurized gas cylinders or pumps while maintaining reliable preservative gas supply to the vessel

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The system equalizes pressure conditions by allowing the preservative gas to flow freely between the reservoir and the vessel through pressure equalization ports, eliminating pressure differentials that would require complex pressurization mechanisms while ensuring continuous gas supply

Inventive Principle:
Principle #12Equipotentiality

2Reliability

If vacuum systems are used to prevent oxygen exposure, then preservation effectiveness is improved, but system complexity and cost increase

Engineering Contradiction:
Improvepreservation effectivenessVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent creates a protective inert atmosphere in the vessel by continuously supplying preservative gas that displaces oxygen, achieving effective preservation without requiring vacuum systems or complex sealing mechanisms, as the inert gas layer physically barriers oxygen contact with the liquid

Inventive Principle:
Principle #39Inert atmosphere (Inert environment)

3Reliability

If expandable bladders are used to displace oxygen, then oxygen displacement is improved, but contamination risk increases

Engineering Contradiction:
Improveoxygen displacement effectivenessVSAvoidcontamination risk
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a fluid exchange structure as an intermediary component that mediates between the preservative gas supply and the vessel, providing filtered pathways for gas flow while preventing direct contact between the bladder material and the liquid, thereby reducing contamination risk while maintaining oxygen displacement effectiveness

Inventive Principle:
Principle #24Intermediary (Mediator)

4Device complexity

If manual refilling of preservative gas is required, then system simplicity is maintained, but time loss and operational complexity increase

Engineering Contradiction:
Improvesystem simplicityVSAvoidrefilling time
Core Design Contradiction:
Device complexityVSLoss of time

Solution Approach 1:

The system implements self-service functionality through an automatic refilling mechanism where the bladder is automatically replenished with preservative gas from a reservoir when the gas level drops, eliminating manual intervention and time loss while maintaining overall system simplicity through passive pressure-driven operation

Inventive Principle:
Principle #25Self-service

5Productivity

If preservative gas is supplied under pressure, then gas flow rate is improved, but risk of overpressurization and leakage increases

Engineering Contradiction:
Improvegas flow rateVSAvoidoverpressurization risk
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent employs dynamic pressure regulation where the preservative gas flow rate automatically adjusts based on the dispensing rate of the liquid, with pressure equalization ports allowing the system to adapt to varying flow demands without overpressurization, maintaining optimal gas flow while preventing leakage through continuous pressure balancing

Inventive Principle:
Principle #15Dynamics

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

Effectively prevents substance degradation by maintaining a preservative gas atmosphere within the vessel, ensuring reliable preservation and avoiding the introduction of contaminants, while being affordable and user-friendly.

Implementation Method 1

preserving wines and other beverages and perishable substances by volumetric displacement between a flowable substance within an inner volume of a vessel and a preservative gas to permit a dispensing of a desired volume of the substance

Methodology Applied
Scientific EffectVolumetric displacement: Displacement

Implementation Method 2

A compressible bladder (314) for retaining a supply of preservative gas to be introduced into a vessel (200)

Methodology Applied
Scientific EffectCompressibility: Compression

Data Source

PatentEP3941849B1Automatic preservative gas replenishing system
Publication Date: 2025.09.17 BOSTON WINE DEVICES LLC
  • EP3941849B1 patent drawingFigure 1
  • EP3941849B1 patent drawingFigure 2A~2B
  • EP3941849B1 patent drawingFigure 3A~3B

AI summary

An automatic replenishing system (300) for automatically replenishing preservative gas within a compressible bladder (314) for supply to the inner volume of a vessel (200). A compressible bladder (314) has an outer wall and an inner volume. A supply conduit (306) receives preservative gas from a source (304), and a discharge conduit (332) supplies preservative gas to a vessel (200). An inflation detection system (316) detects a first condition wherein the compressible bladder (314) is inflated to a state of inflation and a second condition wherein the compressible bladder (314) is inflated below the state of inflation. A valve system (328) is operative to prevent preservative gas from flowing from the source of preservative gas (304) and into the compressible bladder (314) when the compressible bladder (314) is in the first condition and to permit preservative gas to flow from the source of preservative gas (304) and into the compressible bladder (314) when the compressible bladder (314) is in the second condition.