Valve Getter Cartridge for Trace Toxic Gas Removal
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Solution Overview
Problem
There is a challenge in removing traces of toxic gases that build up within the internal space of a cylinder valve prior to and during shipment and storage of cylinder packages containing highly toxic and/or flammable gases.
Innovation Solution
A getter cartridge is designed to be removably inserted into the throat of a valve port or gas discharge passageway of a cylinder valve. The cartridge includes a cylindrically shaped housing with a barrier member permeable to toxic gases and a toxic-gas absorbing means, such as a metal-based absorbent, to absorb and react with the toxic gases, thereby producing a solid reactant product that cannot escape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If cycle purging with inert gas is performed to remove toxic gas from valve cavity, then most toxic gas is removed, but traces of toxic gas remain in the internal spaces of the cylinder valve
Solution Approach 1:
The invention extracts the toxic gas removal function from the cycle purging process by introducing a getter cartridge that specifically targets and removes trace toxic gases from the valve cavity, separating the bulk removal (purging) from the trace removal (getter)
Solution Approach 2:
The getter cartridge acts as an intermediary substance between the toxic gas and the external environment, chemically reacting with trace toxic gases to convert them into harmless or contained forms that cannot escape the valve cavity
2Reliability
If end cap is sealed to prevent toxic gas exit, then gas containment is improved, but traces of toxic gas may still be inadvertently released upon end cap removal
Solution Approach 1:
The getter cartridge performs preliminary action by removing trace toxic gases from the valve cavity before the end cap is removed, ensuring that even when the end cap is taken off, no significant amount of toxic gas is present to be released
3Object-affected harmful factors
If restrictive flow orifice is installed to restrict toxic gas flow, then gas flow is restricted, but traces of toxic gas can still accumulate in valve outlet cavity
Solution Approach 1:
The invention converts the harmful accumulation of trace toxic gases into a beneficial situation by using the getter material to chemically react with and eliminate these traces, turning a potential hazard into a safe condition
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 getter cartridge effectively absorbs and removes traces of toxic gases from the cylinder valve, reducing the risk of accidental release during shipment, storage, or handling, and ensuring a safer handling environment.
Implementation Method 1
a barrier member permeable to the toxic gas contained within the cylinder package
Implementation Method 2
a toxic-gas absorbing means, such as a metal-based absorbent, to absorb and react with the toxic gases, thereby producing a solid reactant product
Data Source
AI summary
The present invention relates to cylinder packages utilized in the delivery of highly toxic and/or flammable compounds to semiconductor manufacturers. More specifically, the present invention provides a cartridge adapted to removably attach to the gas outlet of a gas discharge passageway in a cylinder valve provided on a toxic gas containing cylinder package, the cartridge comprising a cylindrically shaped housing having at least one end fitted with a barrier member permeable to the toxic gas contained within the cylinder package and the housing containing a toxic-gas getter material.