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US 7,913,497 B2Granted
Desiccant cartridge
AssigneeRespironics, Inc.
InventorBrian E. Dickerson
Life of this patent
Estimating the term…
Abstract
The present invention provides a removably attachable compact desiccant cartridge that is useful in lowering the dew point of a medically useful gas, which is liquefied by a cryogenic device. The desiccant cartridge of the present invention comprises a gas feedstream inlet, a dehumidifying zone which comprises a desiccant material, and a dehumidified gas feedstream outlet. The present invention also provides a method for using the same.
Claims21
A portable gas liquefaction system comprising:
- a compressor receiving a supply of gas and adapted to provide a supply of compressed gas from the supply of gas;
- a separator operatively coupled to the compressor to receive the supply of compressed gas, wherein the separator is adapted to provide a supply of oxygen enriched gas from the supply of compressed gas;
- a desiccant cartridge assembly configured and arranged so as to receive the supply of oxygen enriched gas from the separator, wherein the desiccant cartridge assembly is adapted to remove moisture from the supply of oxygen enriched gas to produce a supply of dehumidified oxygen enriched gas;
- and
- a liquefaction system configured and arranged so at to receive the supply of dehumidified oxygen enriched gas, wherein the liquefaction system is adapted to produce a supply of liquefied oxygen from the supply of dehumidified oxygen enriched gas.
2 more elements
A portable gas liquefaction system comprising:
- compressing means for generating a supply of compressed gas from a supply of gas;
- separating means for providing a supply of oxygen enriched gas from the supply of compressed gas;
- dehumidifying means for receiving and removing moisture from the supply of oxygen enriched gas to produce a supply of dehumidified oxygen enriched gas;
- and liquefying means for producing a supply of liquefied oxygen from the supply of dehumidified oxygen enriched gas, wherein the dehumidifying means is a desiccant cartridge assembly adapted to be removably coupled in a gas flow path between the separating means and the liquefying means.
1 more element
A method of providing liquefied oxygen, comprising:
- compressing a supply of gas to product a supply of compressed gas;
- generating a supply of oxygen enriched gas from the supply of compressed gas;
- providing the supply of oxygen enriched gas to a desiccant cartridge assembly;
- dehumidifying the supply of oxygen enriched in the desiccant cartridge assembly to produce a supply of dehumidified oxygen enriched gas;
- and
- providing the supply of dehumidified oxygen enriched gas to a liquefaction system;
- producing a supply of liquefied oxygen from the supply of dehumidified oxygen enriched gas using the liquefaction system.
4 more elements
Dependencies are inferred from the claim text.