Flexible Wall Pressure Package System for Frictionless Response

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Solution Overview

Problem

The existing pressure package systems require significant pressure differences to move the pressure control device, resulting in high friction and slow response to pressure changes, making them inefficient in maintaining constant working pressure.

Innovation Solution

Incorporating an elastic or flexible wall that moves without friction to separate the working pressure chamber and product chamber, allowing for quick adjustments to pressure differences and a compact design, with the option of using inert gases like nitrogen or carbon dioxide as propellants for safety and environmental friendliness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a rigid pressure control device is used to separate chambers, then structural strength is improved, but friction increases and response speed decreases

Engineering Contradiction:
Improvestructural strengthVSAvoidresponse speed
Core Design Contradiction:
StrengthVSSpeed

Solution Approach 1:

The patent replaces the rigid pressure control device with a flexible membrane that separates the product chamber and working pressure chamber. This membrane can move freely in response to pressure differences without the high friction associated with rigid mechanical components, thereby improving response speed while maintaining adequate structural integrity through the membrane's material properties and design.

Inventive Principle:
Principle #30Flexible shells and thin films

2Stability of the object's composition

If a rigid pressure control device is used to separate chambers, then structural stability is improved, but friction increases leading to slower pressure equalization

Engineering Contradiction:
Improvestructural stabilityVSAvoidenergy loss due to friction
Core Design Contradiction:
Stability of the object's compositionVSLoss of energy

Solution Approach 1:

The flexible membrane separator eliminates the sliding friction inherent in rigid pressure control devices. The membrane deforms and moves to equalize pressure between chambers without requiring overcomes of static or kinetic friction, significantly reducing energy loss while maintaining the structural separation needed for independent chamber pressure control.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The patent replaces the mechanical rigid pressure control system with a more compliant flexible membrane system. This substitution transitions from a high-friction mechanical interface to a low-friction flexible interface that responds elastically to pressure differences, reducing energy dissipation through friction.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Manufacturing precision

If a rigid pressure control device is used, then manufacturing precision is improved, but device complexity and weight increase

Engineering Contradiction:
Improvemanufacturing precisionVSAvoiddevice complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The flexible membrane provides a simpler structural solution compared to rigid pressure control devices. It requires fewer components, assembly steps, and precision mechanical tolerances, thereby reducing device complexity and weight while still achieving the necessary separation and pressure control functions through the membrane's inherent flexibility and sealability.

Inventive Principle:
Principle #30Flexible shells and thin films

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 achieves rapid and efficient pressure regulation with reduced friction, enabling quick reaction to pressure changes and a safer, more environmentally friendly operation, while also allowing for a lighter and more cost-effective pressure package design.

Implementation Method 1

a wall 7 which is of elastic and/or flexible design, a first side of the wall bounding the working pressure chamber 4 at least partly and a second side of the wall, facing away from the working pressure chamber, bounding the product chamber 3 at least partly

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

supply the propellant from the high-pressure chamber to the working pressure chamber with the aid of the pressure controller on the basis of a reference pressure, for maintaining the working pressure in the working pressure chamber

Methodology Applied
Scientific EffectPressure gradient: Pressure Gradient

Data Source

PatentUS8006873B2Pressure package system
Publication Date: 2011.08.30 I P S RES & DEV
  • US8006873B2 patent drawing
  • US8006873B2 patent drawing
  • US8006873B2 patent drawing

AI summary

A pressure package system for providing a working pressure on a fluid included in a pressure package, the system being provided with a pressure package in which a product chamber is included for holding the fluid and in which a working pressure chamber is included for keeping a propellant at the working pressure, the system being further provided with a pressure controller and a high-pressure chamber connected with the pressure controller for keeping the propellant in supply at a relatively high pressure, the pressure package system being further provided with a wall which is of elastic and/or flexible design, a first side of the wall bounding the working pressure chamber at least partly and a second side of the wall, facing away from the working pressure chamber, bounding the product chamber at least partly.