Refrigeration – Gas compression – heat regeneration and expansion – e.g.,...
Reexamination Certificate
2006-01-31
2006-01-31
Doerrler, William C. (Department: 3744)
Refrigeration
Gas compression, heat regeneration and expansion, e.g.,...
C062S051100, C062S048200
Reexamination Certificate
active
06990818
ABSTRACT:
In a device for the re-condensation of low-boiling gases evaporating from a liquid gas container having a tubular neck in which a cold head of a cryo-generator is supported, the cold head includes a pulse tube with a heat exchanger and a cold area having an annular projection extending into an annular recess formed in a heat transfer ring mounted in the tubular neck in closely spaced relationship with the walls of the annular recess so as to provide a gas passage therethrough and permitting relative axial movement between the cold head and the liquid gas container.
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G. Popsecu et al. “A Crtical Review of Pulse Tube Cryogenerator Research”,Int. J. of Refrigeration24 (2001) pp. 230-237.
Chao Wang, “Helium Liquefaction With a 4K Pulse Tube Cryocooler”,Cryogneics41 (2001) 491-496.
Bach Klaus J.
Doerrler William C.
Forschungszentrum Karlsruhe GmbH
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