Double-Layer Liquid Container Preventing Gas Ingress
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Solution Overview
Problem
Existing liquid containers for degassed or oxidation-sensitive liquids face the challenge of gas mixing into the liquid during storage and transportation, leading to oxidation issues due to prolonged exposure.
Innovation Solution
A double-structure liquid container with an inner bag made of a film-shaped member and an outer container that includes a fluid supply system to deform the inner bag, preventing gas from entering and maintaining the liquid in a gas-free environment, using a check valve and gas supply system to manage fluid and gas exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the container is filled completely with liquid to eliminate gas space, then the liquid can be stored without oxidation, but the container cannot be deformed to feed out the liquid without introducing gas from exterior
Solution Approach 1:
The container is divided into two functional layers: an inner bag that holds the liquid and an outer container that provides structural support and deformation capability. This segmentation allows the inner bag to be flexible and deformable for liquid discharge while the outer container maintains the overall structure, eliminating the need to introduce external gas during discharge operations.
Solution Approach 2:
The inner bag is nested within the outer container, creating a dual-layer structure. The inner bag can deform independently within the outer container's protective envelope, enabling liquid feedout through deformation without requiring gas introduction from the exterior, thus maintaining liquid purity while enabling operation.
2Ease of operation
If the container is made flexible to allow deformation for liquid feedout, then liquid can be discharged easily, but gas may mix into the liquid during deformation and transportation
Solution Approach 1:
The inner bag containing the liquid is nested within the outer container, which provides structural support and protection. This nested structure allows the inner bag to deform flexibly for liquid discharge while the outer container prevents external gas from entering, thus enabling easy feedout while maintaining liquid purity.
Solution Approach 2:
The inner bag is constructed from flexible materials that allow deformation for liquid discharge, while the outer container provides a protective shell that prevents gas infiltration. This combination of flexible inner structure and protective outer shell enables both easy feedout and liquid purity maintenance.
3Productivity
If a gas supply system is added to inflate the inner bag for liquid discharge, then liquid can be fed out effectively, but the system complexity increases and gas may still mix into the liquid
Solution Approach 1:
Instead of inflating the inner bag with gas to discharge liquid (which would introduce contamination risk), the system inverts the approach by applying external pressure through the outer container's deformation. This pushes the liquid out without introducing gas, achieving efficient discharge while reducing system complexity and maintaining purity.
Solution Approach 2:
The harmful gas supply mechanism is extracted and replaced with a purely mechanical deformation approach. The outer container's structure is designed to deform and push liquid out directly, eliminating the need for gas supply systems and reducing overall system complexity while maintaining discharge efficiency.
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 gas from mixing with the liquid, reducing oxidation risks and maintaining the liquid in a pristine state during storage and transportation.
Implementation Method 1
a second opening for supplying a fluid into a space between the inner bag and an inner wall of the outer container. The inner bag with the liquid reserved therein is deformed by supplying the fluid, to thereby feed out the liquid from the inner bag to an outside.
Implementation Method 2
a check valve for preventing returning of the liquid to be fed out may be provided at the mouth of the inner bag.
Data Source
AI summary
A liquid container includes an inner bag that is made from a film-shaped member and reserves a liquid therein, and an outer container that accommodates the inner bag therein and has a first opening communicating with a mouth of the inner bag and a second opening for supplying a fluid into a space between the inner bag and an inner wall of the outer container.