Recessed Membrane Gas Vessel with Elongated Piercing Pin
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Solution Overview
Problem
High-pressure nitrogen gas cartridges are unsafe and unreliable to use in devices designed for carbon dioxide cartridges due to catastrophic failure risks and back pressure issues when attempting to pierce the membrane, leading to incomplete gas flow.
Innovation Solution
Designing a pressure vessel with a recessed pierceable membrane and an elongated pin mechanism that ensures safe piercing and proper sealing, preventing back pressure by extending the pin further than the membrane is recessed, allowing for reliable and safe operation of high-pressure nitrogen gas devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a prior art piercing mechanism is used with high-pressure nitrogen cartridges, then the device can operate at higher pressure, but catastrophic failure occurs and back pressure prevents complete piercing
Solution Approach 1:
The pin is pre-configured with an elongated shape that extends beyond the recessed membrane surface, ensuring that the piercing action can be completed fully before the cartridge is fully seated. This preliminary geometric configuration prevents the back pressure problem by ensuring the pin tip is already positioned to pierce through the membrane before compression forces build up during the seating process.
Solution Approach 2:
The invention changes the geometric parameters of the pin, specifically its length, to accommodate the recessed membrane configuration. The pin length is increased beyond what would be required for a flush membrane, allowing the piercing function to be completed successfully at high pressures without catastrophic failure.
2Object-affected harmful factors
If the membrane is recessed for safety, then catastrophic failure is prevented, but prior art pins cannot pierce the membrane completely due to back pressure
Solution Approach 1:
The elongated pin geometry is designed in advance to compensate for the recessed membrane position. The extra length ensures that when the cartridge is inserted, the pin tip reaches beyond the recessed surface and can pierce through the membrane completely before the sealing surface contacts the housing, eliminating back pressure issues.
Solution Approach 2:
The solution adds a dimensional aspect to the pin by extending it in the longitudinal direction beyond what would be required for a flush membrane. This dimensional change allows the pin to reach the recessed membrane surface and complete the piercing action without being constrained by the recess depth.
3Reliability
If an elongated pin is used to pierce recessed membranes, then reliable piercing is achieved, but the device complexity increases
Solution Approach 1:
The invention applies local quality by modifying only the pin component rather than the entire device architecture. The elongation is localized to the pin tip region, allowing it to reach the recessed membrane while the rest of the device housing and sealing mechanisms remain unchanged, thus minimizing overall device complexity.
Solution Approach 2:
The solution changes a single geometric parameter of the pin (its length) rather than introducing complex mechanical systems. This simple parameter modification achieves reliable piercing of recessed membranes without adding significant complexity to the overall device structure.
Data Source
AI summary
High pressure compressed gas pressure vessels and devices utilizing such vessels are disclosed herein. More particularly, aspects of the present invention are directed to high pressure (i.e., nitrogen or N2 based) pressurized gas cylinders with pierceable membranes recessed from the opening of the pressure vessel such that prior art piercing mechanisms cannot pierce the membrane for safety purposes. Additionally, aspects of the present invention are directed to pressurized gas operated devices with elongated pins for piercing pressure vessels with recessed pierceable membranes.