EP 0747644 A2 19961211 - Joule-Thomson cryostat
Title (en)
Joule-Thomson cryostat
Title (de)
Joule-Thomson Kryostat
Title (fr)
Cryostat Joule-Thomson
Publication
Application
Priority
US 46916395 A 19950606
Abstract (en)
A load temperature regulated, adaptive-orifice, Joule-Thomson cryostat which controls refrigeration output by servo-controlled gas flow regulation at the Joule-Thomson cryostat expansion, or throttling, orifice. The mechanism consists of a variable aperture needle valve 19 with an expansion orifice that is controlled by a miniature, electrically driven transducer 41, using closed-loop feedback control 59 which monitors 51 the temperature at or on a thermal load point and adjusts the gas throughput so as to maintain a desired cold temperature constant at the load 15. <IMAGE>
IPC 1-7
IPC 8 full level
F16K 31/70 (2006.01); F25B 9/02 (2006.01)
CPC (source: EP)
F25B 9/02 (2013.01); F25B 2309/022 (2013.01)
Designated contracting state (EPC)
CH DE FR GB IT LI SE
DOCDB simple family (publication)
EP 0747644 A2 19961211; EP 0747644 A3 19990120; AU 5238396 A 19961219; CA 2178124 A1 19961207; CA 2178124 C 20020514; IL 118511 A0 19960912; JP H0932965 A 19970207; KR 100200255 B1 19990615
DOCDB simple family (application)
EP 96108475 A 19960528; AU 5238396 A 19960521; CA 2178124 A 19960604; IL 11851196 A 19960531; JP 14438796 A 19960606; KR 19960019972 A 19960605