Back to results
US 6,430,938 B1Granted
Cryogenic vessel system with pulse tube refrigeration
AssigneePraxair Technology, Inc.
InventorsJohn Henri Royal, Christian Friedrich Gottzmann, Arun Acharya, Gary D. Lang
Life of this patent
Estimating the term…
Abstract
A cryogenic vessel system for containing cryogenic fluid wherein heat leak into the vessel interior is counteracted by refrigeration generated from energy provided by a pulse generator.
Claims13
Method for providing refrigeration to a cryogenic vessel which contains insulation with a thermoshield and also contains cryogenic fluid comprising:
- (A) providing a pulse to a working gas to produce a compressed working gas, and cooling the compressed working gas to produce cooled working gas;
- (B) expanding the cooled working gas in a cold end of a pulse tube to generate refrigeration to produce further cooled working gas;
- and
- (C) providing refrigeration from the further cooled working gas directly to the insulation.
1 more element
A cryogenic vessel system comprising:
- (A) a vessel having an outer shell defining a vessel interior;
- (B) a pulse generator, a regenerator, a cold heat exchanger, means for passing a pressure wave through working gas from the pulse generator to the regenerator, and means for passing a pressure wave through working gas from the regenerator to the cold heat exchanger;
- and
- (C) a pulse tube having a cold end, said cold end being in flow communication with the cold heat exchanger, and said cold heat exchanger being at least in part within the vessel interior.
1 more element
Method for providing refrigeration to a cryogenic vessel having an outer shell defining a vessel interior and which contains cryogenic fluid comprising:
- (A) providing a pulse to a working gas to produce a compressed working gas, and cooling the compressed working gas to produce cooled working gas;
- (B) expanding the cooled working gas in a cold end of a pulse tube to generate refrigeration to produce further cooled working gas;
- and
- (C) providing refrigeration to the cryogenic vessel by passing refrigeration from the further cooled working gas to a cold heat exchanger which is at least in part within the vessel interior.
1 more element
Dependencies are inferred from the claim text.