Patent ID: 6907740
Filing Date: 2005-06-21
Classification: F17C,Y02E

Abstract:
1. A gas charging system for charging of a gas storage and delivery apparatus including a gas storage and delivery vessel having an interior volume for holding gas for subsequent dispensing said gas charging system comprising: (a) a gas source of tire gas to be charged to the vessel; (b) a cryotrap; (c) a refrigerator unit coupled to the cryotrap and selectively actuatable to supply refrigeration to the cryotrap, and de-actuatable to terminate the supply of refrigeration to the cryotrap; (d) flow circuitry interconnecting the gas source and cryotrap, arranged for selective initiation of flow of gas from the gas source to the cryotrap, and selective termination of flow of gas from the gas source to the cryotrap, said flow circuitry further coupleable to a vessel to be charged with gas, to interconnect the cryotrap and said vessel, and said flow circuitry being operably arranged for flowing gas to the cryotrap and refrigerating the cryotrap by the refrigerator unit to liquefy gas in the cryotrap, while the flow circuitry is closed to flow between the cryotrap and the vessel, in a first phase of operation, and terminating refrigeration of the cryotrap by the refrigerator unit to warm the cryotrap arid gasify liquid therein, with the flow circuitry closed to flow of gas from the gas source to the cryotrap, and open to flow of gasified gas from the cryotrap to the vessel, in a second phase of operation, with the flow circuitry being operably arranged for repetitive first and second phases of operation until said vessel is charged with gas to a predetermined full fill state at a predetermined pressure, followed by termination of gas flow to the vessel and removal of said vessel from the flow circuitry for sealing of the vessel, whereby said vessel after said removal and sealing stores gas in said predetermined full fill state and at said predetermined pressure, for subsequent dispensing.