Disc-Shaped Pressure Control Device for Packaging
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Solution Overview
Problem
Current pressure packaging systems, particularly those using propellants, face issues with non-constant pressure release, sensitivity to damage, and high production costs due to complex mechanisms and multiple parts, including the use of O-rings which can be damaged easily, leading to instability and inefficiency.
Innovation Solution
A disc-shaped pressure control device with a simplified and compact design that eliminates the need for O-rings and piston-stem mechanisms, allowing for easy assembly and improved sealing, enabling a robust and cost-effective pressure control system with reduced material usage and increased flexibility in container volume production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a piston with stem and O-ring valve mechanism is used for pressure control, then pressure control function is achieved, but the system becomes sensitive to damage and unstable due to O-ring damage during assembly
Solution Approach 1:
The patent removes the O-ring sealing element from the pressure control system. Instead of using a piston with stem moving through an O-ring, the invention employs a valve mechanism where the piston moves within a valve body that maintains sealing through direct contact between the piston surface and valve seat, eliminating the O-ring component that is prone to damage during assembly
Solution Approach 2:
The patent replaces the expensive and fragile O-ring sealing system with a simpler, more robust valve mechanism that uses direct mechanical contact for sealing. This approach accepts that the valve components may have limited life but eliminates the risk of assembly damage to delicate sealing elements, overall improving reliability
2Reliability
If a glass bell with complex valve mechanism is used for pressure control, then pressure control is achieved, but the production process becomes intensive and costly due to large number of parts
Solution Approach 1:
The patent integrates the pressure control valve mechanism directly into the container structure, eliminating the need for a separate glass bell component. The valve body becomes part of the container wall, and the piston mechanism is simplified to work within this integrated structure, dramatically reducing the total number of parts and simplifying the production process
Solution Approach 2:
The container structure serves multiple functions: it acts as both the storage vessel and the housing for the pressure control mechanism. The valve body is formed as part of the container, eliminating the need for separate components and reducing assembly complexity while maintaining pressure control functionality
3Reliability
If a fixed volume glass bell is used for pressure packaging, then pressure control is achieved, but production cost and changeover times increase due to requirement of different injection moulds for each volume
Solution Approach 1:
The patent employs a movable piston that can be positioned at different heights within the container to dynamically adjust the volume of the pressure control chamber. This dynamic adjustment capability allows the same container design to accommodate multiple volume requirements without requiring different injection molds, thereby maintaining adaptability while simplifying production
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 solution provides a robust, cost-effective, and environmentally friendly pressure control system that maintains constant pressure, reduces material consumption, and allows for a range of packaging volumes using a single injection mold, enhancing the reliability and efficiency of pressure packaging.
Implementation Method 1
a pressure control device for controlling a constant predetermined pressure when in use in a pressure packaging
Implementation Method 2
wherein the closing means for receipt in the pressure control device part is provided with one or more sealing means for closing off and releasing the fluid connection
Data Source
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AI summary
The invention provides a pressure control device for pressure packaging based on a disc with fluid connection and a collecting basin, with associated closing means. The closing mechanism in the pressure control device is no longer based on a cylinder with a central opening in the separation wall and closing-off of the opening by means of a piston with stem. The proposal is extremely simple, compact and easy to assemble. The use of O-rings is superfluous. The invention also relates to a method for manufacturing a pressure control system according to the invention and to a kit of parts for the assembly thereof.