Gas Generator Combustion Uniformity via Intermediary Flow Space
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Solution Overview
Problem
In gas generators, achieving uniform combustion of a gas generating agent is challenging due to the difficulty in uniformly disposing the gas generating agent around the igniter, especially when the igniter is positioned shifted from the center, leading to uneven combustion.
Innovation Solution
A gas generator configuration that includes a combustion chamber filled with a gas generating agent and a gas flow space not filled with the agent, where combustion products from the igniter are directed into the gas flow space and then back to the gas generating agent through communicating parts, ensuring uniform combustion regardless of the igniter's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the igniter is disposed at a position shifted from the center of the gas generating agent cluster, then the gas generator structure can accommodate the igniter, but the combustion of the gas generating agent becomes uneven
Solution Approach 1:
A gas flow space is introduced as an intermediary region between the combustion chamber and the external environment. This gas flow space allows combustion products to diffuse and redistribute before reaching the gas generating agent, thereby compensating for the non-uniform combustion caused by the shifted igniter position and achieving more uniform overall combustion
Solution Approach 2:
The problem is solved by adding a spatial dimension - creating a separate gas flow space region that is distinct from the combustion chamber. This additional spatial zone allows combustion products to travel through a different path and distribute more uniformly across the gas generating agent, compensating for the asymmetric igniter placement
2Stability of the object's composition
If the gas generating agent is uniformly disposed around the igniter, then combustion is uniform, but the gas generator structure cannot accommodate the shifted igniter position
Solution Approach 1:
The internal structure is segmented into distinct functional regions: a combustion chamber for burning the gas generating agent and a separate gas flow space for combustion product diffusion. This segmentation allows the igniter to be positioned flexibly while maintaining combustion uniformity through the intermediary gas flow space
Solution Approach 2:
The gas flow space serves as an intermediary region that decouples the igniter position from the gas generating agent distribution. This intermediary space allows combustion products to redistribute and achieve uniform combustion even when the igniter is not centrally positioned among the gas generating agent particles
3Productivity
If combustion products are directly discharged without passing through a gas flow space, then the structure is simple, but combustion products do not distribute uniformly to distal gas generating agent
Solution Approach 1:
The gas flow space acts as an intermediary channel that directs and distributes combustion products throughout the combustion chamber. This intermediary pathway ensures that combustion products reach both proximal and distal regions of the gas generating agent, enhancing overall combustion efficiency and gas generating capacity
Solution Approach 2:
The gas flow space enables continuous circulation and distribution of combustion products throughout the combustion chamber. This continuous action ensures that all regions of the gas generating agent, including distal areas, receive sufficient combustion products for complete and uniform combustion
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 configuration allows for rapid diffusion and distribution of combustion products, ensuring that both proximal and distal gas generating agents are burned uniformly and efficiently, enhancing the combustion gas generating capacity.
Implementation Method 1
a combustion product generated by combustion of the gas generating agent disposed proximal to the igniter is flowed into the gas flow space by a portion of a plurality of communicating parts that connect the combustion chamber and the gas flow space, and the combustion product flowing through the gas flow space is flowed out toward the gas generating agent disposed distal to an igniter by another portion of the plurality of communicating parts
Data Source
AI summary
A gas generator, includes an igniter, a housing provided with a gas discharge port, and including a combustion chamber to burn a gas generating agent, the igniter being shifted from a center of a cluster of the gas generating agent, an isolating part surrounding at least a portion of the cluster of the gas generating agent, and forms, between the isolating part and a predetermined area, a gas flow space serving and a plurality of communicating parts that are provided in the isolating part and connect the combustion chamber and the gas flow space, a portion of the plurality of communicating parts allowing a combustion product generated by combustion of the gas generating agent disposed proximal to the igniter to flow into the gas flow space, and another portion of the plurality of communicating parts allowing a combustion product flowing through the gas flow space to flow out toward the gas generating agent disposed distal to the igniter.