Self Venting Valve Closure for Kegs
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Solution Overview
Problem
Existing keg closure systems do not efficiently manage residual gas pressure after dispensing, posing safety risks during recycling or disposal, and often require manual operator intervention to release pressure.
Innovation Solution
A valve closure system with a self-venting mechanism that automatically vents residual dispensing gas after use, utilizing a rotatable valve member and a resiliently deflectable arm with a detent to interfere with the sealing of the dispensing gas port when the valve is closed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual pressure release systems are used, then operator control over pressure release is achieved, but safety risks remain due to reliance on operator intervention
Solution Approach 1:
The valve closure system automatically releases residual pressure through a self-venting mechanism that activates when the valve member returns to the closed position, eliminating the need for manual operator intervention and ensuring consistent safety without requiring human action
Solution Approach 2:
The spring-loaded detent mechanism is pre-positioned to automatically engage and release based on valve member position, ensuring pressure release occurs at the appropriate moment without requiring operator timing or intervention
2Extent of automation
If a self-venting mechanism is implemented, then automatic pressure release is achieved, but device complexity increases
Solution Approach 1:
The self-venting function is merged into the existing valve closure structure by integrating the detent mechanism with the valve member and closure body, allowing automatic pressure release without adding separate complex subsystems
Solution Approach 2:
The spring-loaded detent acts as an intermediary element that translates valve member position into automatic pressure release action, providing a simple mechanical linkage that achieves automation without complex control systems
3Reliability
If the valve closure maintains full sealing, then carbonation is preserved, but residual pressure cannot be released
Solution Approach 1:
The sealing system dynamically transitions between full sealing and controlled venting states based on valve member position, maintaining carbonation during normal operation while automatically releasing pressure when the valve closes after dispensing
Solution Approach 2:
The sealing function is segmented into two distinct operational modes: primary sealing for carbonation retention and secondary venting for pressure release, achieved through the detent mechanism that creates a controlled interference with the sealing surface
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 effectively maintains a sealed state after keg filling while automatically releasing residual gas pressure after dispensing, enhancing safety and reducing the reliance on manual operator intervention.
Implementation Method 1
a detent (23) carried by a resiliently deflectable arm (22)
Data Source
Figure 1
Figure 2
Figure 3~5
AI summary
A valve closure for a keg, e.g. incorporating an A-type valve arrangement, has a gas inlet port 11, a liquid dispensing port 12 and a valve member 6 to sealably close the gas inlet and liquid dispensing ports. A venting mechanism includes a detent 23 which can be activated by rotating the valve member 6 after the keg has been filled. This mechanism, when activated, primesa resiliently deflectable circumferential arm 22 to move thedetent between the sealing face of the valve member 6 and its valve seat when the valve is next connected for dispensing. When the mechanism is not activated it does not interfere with the normal opening and closing of the valve, e.g. during filling.