Expandable Chamber Regulating One-Way Valve Pressure Equilibrium
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Solution Overview
Problem
One-way valves in containers, while effective in releasing gas pressure and preventing ingress, fail to maintain pressure equilibrium during temperature and pressure changes, leading to container expansion or collapse, and subsequent product spoilage due to oxygen exposure.
Innovation Solution
A regulating apparatus with a sealed and expandable chamber, such as a bladder, is associated with the one-way valve to maintain it in a closed or semi-closed configuration during elevated temperatures and reduced external pressures, using an expandable material to exert force and control gas release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a one-way valve is used to release gas pressure and prevent ingress, then the valve integrity and one-way function are improved, but the container fails to maintain pressure equilibrium during temperature and pressure changes, leading to expansion or collapse
Solution Approach 1:
A regulating apparatus is introduced as an intermediary component between the container interior and the one-way valve. This apparatus includes a chamber that can be expanded or contracted to regulate valve operation. When the chamber is expanded, it applies force to keep the valve closed; when contracted, it allows the valve to open for pressure release. This mediator enables precise control of the valve's opening/closing behavior without compromising the valve's one-way integrity.
Solution Approach 2:
The regulating apparatus transitions from a static to a dynamic system by using an expandable/contractible chamber whose volume changes in response to environmental conditions (temperature and pressure). This dynamic adjustment allows the system to adapt to varying transportation conditions, maintaining pressure equilibrium by actively regulating valve operation rather than relying on fixed valve characteristics.
2Object-affected harmful factors
If the one-way valve prevents air ingress effectively, then product protection is improved, but gas expulsion during high temperature or low pressure transportation causes vacuum state and container collapse
Solution Approach 1:
The regulating apparatus performs preliminary action by proactively controlling valve closure before vacuum conditions can develop. When environmental pressure decreases or temperature increases during transportation, the chamber expands to apply force on the valve, preemptively preventing gas expulsion. This anticipatory control avoids the formation of vacuum states that would otherwise cause container collapse upon opening.
Solution Approach 2:
The system changes physical parameters (chamber volume, applied force) in response to environmental parameter changes (temperature, pressure). The chamber expands when external pressure decreases or temperature increases, adjusting the force applied to the valve to maintain pressure equilibrium. This parameter coupling ensures the valve remains closed under transportation conditions that would otherwise cause harmful vacuum states.
3Stress or pressure
If the valve allows complete pressure release, then gas buildup is prevented, but rapid air ingress upon opening exposes product to oxygen and causes spoilage
Solution Approach 1:
The regulating apparatus implements a feedback mechanism where the chamber's expansion/contraction state responds to pressure differential conditions. When internal pressure exceeds external pressure (indicating gas buildup), the chamber contracts to allow controlled valve opening for pressure release. When pressures equalize or external pressure exceeds internal pressure, the chamber expands to close the valve, preventing rapid air ingress. This feedback control enables gradual, controlled pressure equalization rather than sudden rushes of air.
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
Prevents gas expulsion and ingress, maintaining container integrity and product quality by regulating valve operation based on environmental conditions, preventing expansion or collapse during transportation and storage.
Implementation Method 1
when said chamber is exposed to elevated temperatures and/or reduced external pressure said gas within said chamber expanding
Implementation Method 2
when said chamber is exposed to elevated temperatures and/or reduced external pressure said gas within said chamber expanding
Data Source
Figure 1~9
Figure 3~4
Figure 5~6
AI summary
A regulating apparatus for a pressure activated one-way valve. The one-way valve is for mounting on a container to permit the release of gas from within the container and to control the ingress of atmospheric air/. The regulating apparatus comprises a sealed and expandable chamber containing a gas. The chamber is operatively associated with the one-way valve such that when the chamber is exposed to elevated temperatures and/or reduced external pressure the gas within the chamber expands and exerts a force upon the one-way valve or portions thereof. The force tends to maintain the one-way valve in a closed or semi-closed configuration.