Dual-Chamber Valve Closure Without Springs or Gas Venting
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Solution Overview
Problem
Existing beverage re-carbonation systems are complex, prone to accidental discharge, and require frequent maintenance due to numerous moving parts, which can lead to stress and potential freezer burn, and often vent to atmosphere during operation.
Innovation Solution
A valve design featuring two chambers with a movable member that utilizes differential gas pressures to control fluid communication, ensuring safe closure and reliable re-opening, eliminating the need for biasing members like springs, and incorporating a pressure reduction mechanism to prevent accidental discharge and venting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If numerous moving parts are used in re-carbonation systems, then the system can achieve desired functionality, but the device complexity increases and maintenance becomes more difficult
Solution Approach 1:
The patent combines multiple functions into a single integrated valve assembly. The valve body incorporates both the carbonation function and the pressure regulation function, eliminating the need for separate pressure relief valves and control mechanisms. This merging reduces the number of moving parts while maintaining full re-carbonation functionality.
Solution Approach 2:
The valve assembly is designed to perform multiple functions simultaneously: it controls gas flow into the beverage, regulates pressure differential, prevents accidental discharge, and provides pressure relief if needed. This multi-functionality eliminates the need for numerous specialized components, simplifying the overall system.
2Reliability
If spring biasing members are used to maintain valve closure, then the valve can remain closed during storage, but the system becomes prone to accidental discharge and requires frequent maintenance
Solution Approach 1:
The patent replaces the mechanical spring biasing system with a pressure-based closure mechanism. The valve remains closed during storage due to the pressure differential between the high-pressure gas source and the low-pressure beverage chamber, rather than mechanical spring force. This eliminates springs and associated moving parts that are subject to stress and failure.
Solution Approach 2:
The closure and opening of the valve is controlled by pneumatic pressure differentials rather than mechanical actuation. The high-pressure gas naturally maintains valve closure during storage, and the valve opens automatically when the pressure differential reaches the operating threshold, eliminating the need for spring-based mechanical biasing.
3Productivity
If the valve is designed to open at high pressure, then carbonation function is achieved, but venting to atmosphere occurs during normal operation
Solution Approach 1:
The patent changes the pressure parameter threshold for valve operation. The valve is designed to open only when a specific pressure differential is achieved during active carbonation, rather than opening at any high pressure condition. This selective parameter control ensures carbonation efficiency while preventing unwanted venting during normal operation.
Solution Approach 2:
The valve incorporates a feedback mechanism where the pressure differential itself controls the valve state. When the pressure differential indicates active carbonation is needed, the valve opens; when the differential returns to normal storage levels, the valve automatically closes. This feedback control prevents premature or accidental venting while maintaining carbonation functionality.
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 valve provides a safe, reliable, and simplified re-carbonation system that avoids accidental discharge and venting to atmosphere, reducing maintenance needs and preventing freezer burn, while maintaining control over gas flow and pressure.
Implementation Method 1
gas at a first pressure in the first chamber provides a closing force to a first surface area of the movable member to overcome an opening force provided by gas at a second pressure in the second chamber
Implementation Method 2
as the movable member moves to the closed position, the second surface area of the movable member exposed within the second chamber is reduced thus reducing the opening force provided by the gas at the second pressure
Data Source
AI summary
A valve comprising a first chamber (111) and a second chamber (112), wherein a movable member (204) is arranged to selectably bring the first and second chambers into and out of fluid communication with one another, the movable member arranged such that when in an open position wherein the first and second chambers are in fluid communication, gas at a first pressure in the first chamber provides a closing force to a first surface area (222) of the movable member to overcome an opening force provided by gas at a second pressure in the second chamber on a second surface area (223) of the movable member whereby the movable member moves to a closed position to isolate the first and second chambers, and further arranged wherein as the movable member moves to the closed position, the second surface area of the movable member exposed within the second chamber is reduced thus reducing the opening force provided by the gas at the second pressure and providing a bias towards the closed position.