Gas Container Membrane Closure for Corrosion-Free Carbonation

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Solution Overview

Problem

Existing gas containers with integrated flavorings or aromatics suffer from corrosion and high manufacturing costs due to the use of ball valves, which also result in reduced carbon dioxide introduction into drinks, affecting the refreshing and invigorating effect.

Innovation Solution

A gas container design featuring a membrane closure that irreversibly opens with gas pressure, ensuring complete emptying of the gas container and eliminating corrosion risks by using a membrane that can be pierced, allowing full gas release and improved mixing with substances.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a ball valve closure is used in the substance capsule, then the flow opening can be closed to ensure separation of material from gas, but corrosion occurs to the spring and ball valve components reducing reliability

Engineering Contradiction:
Improveservice life of gas containerVSAvoidcorrosion of closure components
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The invention extracts and removes the problematic ball valve closure components (spring, ball) from the substance capsule, replacing them with a simple membrane closure that eliminates corrosion risks while maintaining the sealing function.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The membrane closure is designed as a simple, disposable component that is replaced rather than maintained, eliminating the need for corrosion-resistant materials and complex maintenance of metallic closure components.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

2Reliability

If a ball valve closure with spring is used in the substance capsule, then the flow opening can be controlled, but manufacturing costs increase due to multiple work steps and individual parts

Engineering Contradiction:
Improveseparation of material from gasVSAvoidmanufacturing cost of gas container
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The invention merges the closure function into a simple membrane that is integrated into the substance capsule structure, eliminating the need for separate ball, spring, and housing components, thereby simplifying manufacturing.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The membrane closure is a simple, inexpensive component that can be easily manufactured and replaced, significantly reducing manufacturing costs compared to complex ball valve assemblies.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

3Reliability

If a ball valve closure is used in the substance capsule, then the flow opening can be closed, but gas pressure must be high enough to overcome spring force leaving gas in the container

Engineering Contradiction:
Improveseparation of material from gasVSAvoidamount of gas that can be introduced into drink
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The invention extracts the spring force mechanism from the closure system, allowing gas pressure to directly open the membrane without needing to overcome mechanical resistance, enabling complete gas emptying.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The membrane closure allows complete gas discharge without the mechanical resistance of a spring, maximizing the quantity of gas that can be introduced into the drink.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

4Reliability

If multiple components (ball, spring, cap) are used to close the flow opening, then the closure can be controlled, but device complexity increases

Engineering Contradiction:
Improveseparation of material from gasVSAvoidstructure of closure mechanism
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The invention extracts and removes the complex ball valve mechanism (ball, spring, housing) from the substance capsule, replacing it with a simple membrane closure that maintains sealing functionality.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The invention uses a flexible membrane to close the flow opening, replacing rigid mechanical components with a thin film that can be easily sealed and opened by pressure differential.

Inventive Principle:
Principle #30Flexible shells and thin films

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

This design enhances gas mixing in prepared fluids, increases the fizzing effect, and extends the gas container's service life without additional components, reducing production costs and maintaining the refreshing quality of the drink.

Implementation Method 1

the closure can be irreversibly converted from a closed state to an open state by a gas pressure within the gas container

Methodology Applied
Scientific EffectGas pressure: Pressure Increase

Data Source

PatentEP3982031B1Gas container
Publication Date: 2023.11.29 ISI GMBH
  • EP3982031B1 patent drawingFigure 1~2
  • EP3982031B1 patent drawingFigure 3~4c
  • EP3982031B1 patent drawingFigure 5~6

AI summary

Gas container (1) with an internal volume for receiving gas (4), comprising a base body (2) with a base body head (3), wherein the base body (2) forms at least sectionally the internal volume and wherein at least in the region of the base body head (3) a material capsule (10) is arranged in the base body (2) which contains a material (11), wherein furthermore the base body head (3) and the material capsule (10) are closed by means of a cap (8), wherein the material capsule (10) has a flow opening (14) arranged opposite the cap (8), which is closed by means of a closure (12, 15) in order to ensure a separation of the material (11) from the gas (4).The closure (12, 15) is designed as a membrane (12) or as a flow-through closure (15) such that when the cap (8) is pierced, the closure (12, 15) can be irreversibly transferred from a closed state to an open state by a gas pressure inside the gas container (1) in order to allow complete emptying of the gas (4) from the gas container (1).