EP 3477225 A1 20190501 - CRYOGENIC SYSTEM
Title (en)
CRYOGENIC SYSTEM
Title (de)
KRYOGENES SYSTEM
Title (fr)
SYSTÈME CRYOGÉNIQUE
Publication
Application
Priority
JP 2017206101 A 20171025
Abstract (en)
The efficiency of a cryogenic system is improved. A cryogenic system (10) includes a single-stage precooler (12) that includes a first-stage cooling stage (32a), and a two-stage precooler (14) that includes a first-stage cooling stage and a second-stage cooling stage (38b), and a JT cryocooler (16) that includes a first-stage precooling unit (50) to be cooled by the first-stage cooling stage (32a) of the single-stage precooler (12) and a second-stage precooling unit (52) to be cooled by the second-stage cooling stage (38b). The single-stage precooler (12) is a single-stage Stirling cryocooler or a single-stage Stirling type pulse tube cryocooler and is operated at a first operating frequency. The two-stage precooler (14) is a two-stage Stirling cryocooler or a two-stage Stirling type pulse tube cryocooler and is operated at a second operating frequency lower than the first operating frequency. The first-stage precooling unit (50) is thermally coupled to the first-stage cooling stage (32a) of the single-stage precooler (12) and is thermally isolated from the first-stage cooling stage (38a) of the two-stage precooler (14).
IPC 8 full level
F25B 9/10 (2006.01); F25B 9/14 (2006.01); F25D 19/00 (2006.01)
CPC (source: EP)
F25B 9/10 (2013.01); F25B 9/14 (2013.01); F25B 9/145 (2013.01); F25D 19/006 (2013.01); F25B 2309/1425 (2013.01)
Citation (applicant)
JP H0444202 A 19920214 - HITACHI LTD
Citation (search report)
- [I] JP 2003194428 A 20030709 - SUMITOMO HEAVY INDUSTRIES
- [I] US 2004187519 A1 20040930 - ZHU SHAOWEI [JP], et al
- [I] JP 2000074518 A 20000314 - AISIN SEIKI
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3477225 A1 20190501; EP 3477225 B1 20220302; JP 2019078481 A 20190523; JP 6975015 B2 20211201
DOCDB simple family (application)
EP 18201006 A 20181017; JP 2017206101 A 20171025