Compact Ignition System Internalization in Chemical Oxygen Generators
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Solution Overview
Problem
Conventional chemical oxygen generators have space constraints that limit the internalization of their ignition systems, resulting in reduced oxygen-generating capacity due to the majority of the ignition system being external to the generator body.
Innovation Solution
A compact ignition system is designed where the majority of the ignition components, including a spring, firing plunger, and mounting flange, are housed within the chemical oxygen generator's body, utilizing a recess in the core to minimize external height and maximize internal space for oxygen production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the ignition system is placed externally to the generator body, then the ignition components can be easily assembled and maintained, but the oxygen-generating capacity is reduced due to increased external height
Solution Approach 1:
The ignition system components (firing plunger, spring, anvil) are nested within a housing that is integrated into the generator body structure. The housing contains these components in a compact arrangement, allowing the ignition system to be self-contained while maintaining ease of assembly through modular design. This nesting approach eliminates the need for separate external mounting while preserving manufacturing simplicity.
2Quantity of substance
If the ignition system is internalized within the generator body, then the oxygen-generating capacity increases, but the device complexity increases due to integration requirements
Solution Approach 1:
The housing serves multiple functions: it contains the ignition components (firing plunger, spring, anvil), provides structural support for the generator body, and facilitates assembly through integrated features. By making the housing multi-functional, the design reduces the need for separate components and simplifies the overall integration process while achieving compact internalization of the ignition system.
3Length of moving object
If the overall length of the generator is constrained, then the generator fits within existing dimensional constraints, but the oxygen production duration is limited
Solution Approach 1:
Instead of extending the generator length to increase oxygen production capacity, the design utilizes the radial dimension by creating a recess in the core and placing the ignition system within this recessed area. This dimensional approach allows increased core volume for oxygen production without proportionally increasing the overall length, thereby extending oxygen production duration while maintaining compact dimensions.
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
This internalization of the ignition system increases the oxygen-generating capacity of the generator without increasing its overall length, allowing for extended oxygen production within existing dimensional constraints.
Implementation Method 1
A spring drives a firing plunger into a primer cap of the core to start the chemical reaction and generate the oxygen
Implementation Method 2
Chemical oxygen generators are configured to release oxygen created by a chemical reaction that is triggered inside the generator
Data Source
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AI summary
A compact ignition system for chemical oxygen generators for possible use in an aircraft. The chemical oxygen generator is configured such that a majority of the ignition system can be accommodated within an interior of the generator body. In some embodiments, the ignition system is positioned within a recess of an upper surface of the core of the generator. Housing a majority of the ignition system within the generator allows the overall oxygen-generating capacity of the generator to be increased without requiring a corresponding increase in the overall length of the generator.