Gas Canister Cap with Deviation Surface for Inflatable Bag
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Solution Overview
Problem
Existing gas canister caps for personal protective devices do not adequately address the issue of reaction forces generated during rapid inflation, which can lead to damage or ejection of the gas canister, and do not uniformly distribute inflation fluid to prevent stress on the connection between the gas canister and the inflatable bag.
Innovation Solution
A cap for a gas canister featuring a deviation surface that deflects the inflation fluid, directing it along inclined paths to reduce reaction forces and uniformly distribute pressure within the inflatable bag, thereby minimizing stress on the connection between the gas canister and the inflatable bag.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the gas canister is designed to release inflation fluid quickly under high pressure, then the inflation speed of the bag is improved, but high reaction forces are generated that can damage the gas canister or connection elements
Solution Approach 1:
The cap is divided into multiple functional elements: a main body with multiple holes for fluid distribution, and a deviation surface that redirects gas flow. This segmentation allows the system to manage high-pressure fluid release by distributing it across multiple pathways and redirecting the force vectors, thereby reducing the net reaction force on the gas canister while maintaining rapid inflation capability.
Solution Approach 2:
The deviation surface redirects the inflation fluid flow from a linear path into a three-dimensional pattern by deflecting gas at angles. This dimensional change in flow direction disperses the reaction force across different spatial dimensions rather than concentrating it in one direction, reducing the harmful linear reaction force on the gas canister.
2Reliability
If the cap redirects inflation fluid to reduce reaction forces, then the safety of the gas canister is improved, but the uniformity of pressure distribution in the bag may be compromised
Solution Approach 1:
The cap incorporates multiple holes distributed across its surface, which segments the single high-pressure jet into multiple smaller streams. This segmentation, combined with the deviation surface that redirects these streams at various angles, creates a distributed pressure pattern that maintains relative uniformity in the bag while reducing peak reaction forces on the gas canister.
Solution Approach 2:
The deviation surface is positioned and angled to create localized flow redirection in specific regions of the cap. This local quality control allows different portions of the cap to redirect fluid in different directions, achieving both force reduction and pressure distribution optimization through spatially varying flow characteristics.
3Stability of the object's composition
If the cap is designed with multiple holes for fluid distribution, then the pressure uniformity in the bag is improved, but the device complexity increases
Solution Approach 1:
The cap merges multiple functions into a single integrated component: it serves as both the fluid distribution manifold (with multiple holes) and the flow redirection device (with deviation surface). This merging achieves pressure uniformity and force reduction without requiring separate additional components, thereby limiting the increase in device complexity.
Solution Approach 2:
The cap is designed as a multi-functional element that simultaneously distributes fluid through multiple holes, redirects gas flow to reduce reaction forces, and provides structural support. This universality allows a single component to achieve multiple objectives, avoiding the need for additional separate devices and limiting complexity increases.
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 cap effectively reduces reaction forces acting on the gas canister, minimizes stress on the connection between the gas canister and the inflatable bag, and ensures uniform pressure distribution within the inflatable bag, enhancing safety and performance during rapid inflation events.
Implementation Method 1
the cap (1) comprises an appendix (16) protruding from said main body (10). Said appendix (16) is provided with a deviation surface (18) which is arranged facing said at least one hole (14) so as to deflect a fluid exiting said at least one hole (14)
Implementation Method 2
when the inflation fluid comes out of the gas canister, even in the presence of the cap, a reaction force is generated according to Newton's third law of motion
Data Source
AI summary
A cap configured to be fastened to a gas canister. The cap includes a main body provided with at least one hole. The cap includes an appendix which protrudes from the main body. The appendix is provided with a deviation surface which is arranged facing the at least one hole so as to deflect a fluid exiting the at least one hole. Also provided is an assembly including a gas canister provided with the cap. Further provided is a personal protective device with an inflatable bag connected to said assembly.