Two-Chamber Valve Using Pressure Differential for Safe Reclosure
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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 normal operation.
Innovation Solution
A valve design featuring two chambers with a movable member that utilizes pressure differences across defined surface areas to control fluid communication, ensuring safe closure and reopening without biasing members like springs, thereby preventing accidental discharge and maintaining a reliable seal during storage and use.
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 complex control functions, but the device complexity increases and maintenance becomes more difficult
Solution Approach 1:
The patent combines multiple control functions into a single movable member (piston) that simultaneously responds to pressure differentials and temperature conditions. The piston integrates the functions of pressure regulation, temperature sensing, and flow control into one component, reducing the number of separate moving parts while maintaining complex control capabilities.
Solution Approach 2:
The movable member serves multiple functions: it acts as a pressure-regulated valve, a temperature-sensitive actuator, and a flow control mechanism. This multi-functionality reduces the need for separate components, simplifying the overall device while achieving sophisticated control over the re-carbonation process.
2Reliability
If the valve remains closed during storage, then accidental discharge is avoided, but the valve must reliably reopen during use
Solution Approach 1:
The valve is pre-configured with a piston positioned in a closed position during storage, establishing a reliable sealed state before use. The design ensures that the piston is already in the correct position to prevent accidental discharge, and the pressure differential mechanism is pre-set to automatically trigger reopening when needed.
Solution Approach 2:
The valve incorporates a feedback mechanism where the pressure differential between chambers automatically detects when reopening is needed. When the pressure in the first chamber drops below a threshold during use, the pressure differential drives the piston to open the valve, ensuring reliable automatic reopening based on real-time pressure conditions.
3Object-affected harmful factors
If pressure differential control is used without biasing members, then the valve avoids freezer burn and icing, but the control mechanism becomes more sensitive to pressure changes
Solution Approach 1:
The patent removes biasing members (springs, weights) from the valve mechanism, extracting the source of pressure sensitivity issues. By eliminating these components, the valve no longer experiences the pressure fluctuations and temperature sensitivity that cause freezer burn and icing, achieving more stable operation in cold environments.
Solution Approach 2:
The patent replaces mechanical biasing members with a pressure differential control system that uses fluid pressure relationships to control valve operation. This substitution eliminates the mechanical components that are sensitive to temperature and pressure changes, reducing the risk of freezer burn and icing while maintaining reliable control.
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 and reliable seal for storage, avoiding accidental discharge and maintaining control over venting, simplifying construction and maintenance while reducing wear and tear on components, ensuring consistent and predictable operation.
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
Data Source
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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.