Valve Assembly for Continuous Adjustable Gas Blending
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gas blending systems for applications like draft beer systems are expensive, inaccurate, and limited to fixed ratios, lacking user adjustability and reliability, and often require external power and consumable components.
Innovation Solution
A valve assembly and fluid arrangement that alternately supplies blended gases from two sets of fluid storage chambers, using a fluid pressure operated valve controller to maintain continuous delivery and recharge depleted sources, allowing for user-adjustable ratios without external power or consumable components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional gas blending systems are used, then gas mixing functionality is provided, but the systems are expensive and include components subject to failure
Solution Approach 1:
The system divides the gas storage and delivery function into multiple separate tanks (first gas tank, second gas tank, third gas tank, fourth gas tank) instead of using a single complex blending system. Each tank operates independently, reducing the complexity of any single component while maintaining reliable gas supply through redundancy and alternation.
Solution Approach 2:
The system automatically switches between gas tanks based on pressure thresholds, discarding depleted tanks and recovering/recharging them separately. This allows continuous operation with high reliability while simplifying each individual tank design, as each tank only needs to handle single-gas storage rather than complex blending operations.
2Adaptability or versatility
If fixed ratio blending systems are used, then gas mixing is provided, but user adjustability is limited
Solution Approach 1:
The system dynamically adjusts gas ratios by automatically switching between different tank combinations based on user-selected ratio modes. Instead of requiring manual adjustment of complex valve mechanisms, the system changes the active gas sources dynamically to achieve different blending ratios, maintaining ease of operation while providing high adaptability.
Solution Approach 2:
The same four-tank infrastructure serves multiple functions: it can provide different gas ratios by activating different tank combinations, maintain continuous supply through automatic switching, and support various operating modes. This multi-functionality achieves high adaptability without complicating user operation, as the control system handles the complexity internally.
3Productivity
If continuous gas delivery is required, then uninterrupted supply is provided, but system complexity increases
Solution Approach 1:
The system employs periodic action through automatic, threshold-based switching between gas tanks. When pressure in active tanks drops below a threshold, the system periodically transitions to backup tanks, which have been recharging in parallel. This periodic switching mechanism ensures continuous delivery without requiring complex real-time blending controls, maintaining simplicity while achieving high productivity.
Solution Approach 2:
The system performs preliminary action by pre-charging backup gas tanks before they are needed. The fourth gas tank charges the first and second tanks, and the third gas tank charges the second and fourth tanks, ensuring that replacement tanks are ready before switching occurs. This eliminates delivery interruptions without requiring complex real-time response systems.
4Reliability
If external power and consumable components are used, then control functionality is provided, but reliability decreases and costs increase
Solution Approach 1:
The system uses self-service through pneumatic operation where gas pressure itself drives the switching mechanism and valve actuation. The high-pressure gas from the tanks provides the energy needed for system operation, eliminating external power requirements. This self-powered approach increases reliability by removing electrical components and consumables while reducing operational costs.
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
Enables accurate, reliable, and economical delivery of volumetrically proportioned gases with user-selectable ratios, ensuring consistent gas mixtures in draft beer systems and other applications, reducing costs and complexity.
Implementation Method 1
a fluid pressure operated valve controller adapted to automatically switch between alternate sources of volumetrically proportioned fluids
Implementation Method 2
a floating piston slidingly affixed about the shift rod, and segregating the piston chamber into first and second volumes; means to translate the shift rod between first and second operable states responsive to the relative fluid pressures of the first and second volumes
Data Source
AI summary
A valve assembly and fluid arrangement for continuous delivery of volumetrically proportioned gases or like fluids includes a valve assembly and a volumetric fluid storage bank, which has first and second sets of fluid storage chambers. The valve assembly alternately supplies a consumer with a blend of gases from the first set of fluid storage chambers while charging the second set of fluid storage chambers from pressurized gas sources, and, upon a threshold depletion of gases from the first set of chambers, supply the consumer with a blend of gases from the second set of fluid storage chambers while charging the first set of fluid storage chambers from the gas sources. Upon the threshold depletion of gases from the second set of chambers, the valve assembly again supplies mixed gases from the first set of chambers while charging the second set of chambers, and the process repeats.