Temperature-Driven Valve Assembly for Stable Gas Spring Force
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Solution Overview
Problem
Conventional gas pressure springs experience significant temperature-dependent force variability, making it difficult to maintain doors open at low temperatures without excessive force at high temperatures, leading to potential damage and user safety issues.
Innovation Solution
A temperature-driven valve assembly that connects and disconnects fluid paths between two chambers using a bimetal spring and O-ring, providing an alternative fluid path to ensure reliable operation and reduce temperature-dependent force variability by engaging a secondary chamber at low temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a temperature-balancing valve is installed to reduce temperature dependency, then the force consistency across temperatures is improved, but the device complexity increases
Solution Approach 1:
The valve assembly uses a temperature-sensitive element that automatically changes its state based on temperature parameters. When temperature drops below a threshold, the element activates to connect the chambers; when temperature rises above the threshold, it deactivates to disconnect them. This automatic parameter-based control achieves force consistency without requiring complex external control systems.
2Volume of moving object
If the sealing means is positioned close to the switching element for compact design, then the device size is reduced, but the sealing reliability decreases when the switching element moves
Solution Approach 1:
The sealing means is arranged circumferentially around the channel wall in a radial dimension, rather than only in the axial direction. This circumferential sealing configuration provides multiple sealing contact points around the perimeter, ensuring reliable sealing even when the switching element moves axially, while maintaining a compact overall design.
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 assembly ensures a consistent and safe operation of gas pressure springs by maintaining sufficient force at low temperatures and reducing excessive force at high temperatures, enhancing reliability and user safety.
Implementation Method 1
at least one switching element having an opening configuration in an opening temperature range and a closing configuration in a closing temperature range, the switching element being, at least in sections, movable relative to the channel portion along an axis of movement in a temperature-driven manner
Data Source
AI summary
Provided is a temperature-driven valve assembly which can be manufactured in a cost-effective and simple manner as well as a gas pressure spring including the valve assembly which enables more reliable and safer operation of the gas pressure spring.