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Brevets déposés : réfrigérateur cryogénique.

Patents alert: cryogenic refrigerator.

Auteurs : YUAN J., MAGUIRE J. F., SIDI-YEKHLEF A., et al.

Type d'article : Article

Résumé

A cryogenic refrigerator for cooling a rotating device includes a stationary regenerator, and a rotatable cold heat exchanger coupled to the stationary regenerator to rotate relative thereto. The cryogenic refrigerator is, for example, of the Gifford-McMahon type or pulse tube type. In the Gifford-McMahon type, a stationary cylinder houses the regenerator, and a rotatable cylinder mounted to the cold heat exchanger is concentrically arranged about the stationary cylinder. Alternatively, the rotatable cylinder is axially offset of the stationary cylinder. A seal, for example, a ferrofluidic seal, is located between the stationary and rotatable cylinders. In the pulse-tube type, a pulse tube is concentrically arranged about the regenerator, and the cold heat exchanger includes a stationary portion coupled to the regenerator and a rotatable portion coupled to the pulse tube. A back-up valve system is provided for increased reliability.

Détails

  • Titre original : Patents alert: cryogenic refrigerator.
  • Identifiant de la fiche : 2004-2076
  • Langues : Anglais
  • Source : Applied Thermal Engineering - vol. 23 - n. 18
  • Date d'édition : 12/2003

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