EP 4350249 A3 20240612 - METHOD FOR OPERATING CRYOCOOLER AND CRYOCOOLER
Title (en)
METHOD FOR OPERATING CRYOCOOLER AND CRYOCOOLER
Title (de)
VERFAHREN ZUM BETRIEB EINES KRYOKÜHLERS UND KRYOKÜHLER
Title (fr)
PROCÉDÉ DE FONCTIONNEMENT D'UN CRYORÉFRIGÉRATEUR ET CRYORÉFRIGÉRATEUR
Publication
Application
Priority
JP 2022161835 A 20221006
Abstract (en)
An initial cooling time of a cryocooler (10) is shortened. A method for operating a cryocooler 10 includes: connecting a second compressor 80 in series with a first compressor 12 on a high pressure line 63 or a low pressure line 64; connecting a buffer volume 70 to the low pressure line 64 via a supply valve 72; executing initial cooling for cooling an expander 14 from an initial temperature to a cryogenic temperature in a state where the second compressor 80 and the buffer volume 70 are connected to the cryocooler 10; and executing a steady operation of maintaining the expander 14 at the cryogenic temperature after the initial cooling. The execution of the initial cooling includes supplying a working gas to the expander 14 by using the first compressor 12 and the second compressor 80, and controlling the supply valve 72 to keep a pressure of the high pressure line 63 within a preset appropriate pressure range based on the measured pressure of the high pressure line 63.
IPC 8 full level
F25B 9/06 (2006.01); F17C 1/00 (2006.01); F25B 9/10 (2006.01); F25B 9/14 (2006.01); F25D 19/00 (2006.01)
CPC (source: CN EP US)
F25B 1/10 (2013.01 - CN); F25B 9/06 (2013.01 - EP US); F25B 9/10 (2013.01 - EP); F25B 9/14 (2013.01 - EP); F25B 9/145 (2013.01 - EP); F25B 31/00 (2013.01 - CN); F25B 41/20 (2021.01 - CN); F25B 41/30 (2021.01 - CN); F25B 49/02 (2013.01 - CN); F25B 49/022 (2013.01 - US); F25B 2309/005 (2013.01 - EP); F25B 2600/25 (2013.01 - US); F25B 2700/193 (2013.01 - EP US); F25B 2700/1933 (2013.01 - EP)
Citation (search report)
- [A] EP 3913300 A1 20211124 - SUMITOMO HEAVY INDUSTRIES [JP]
- [A] US 2022163030 A1 20220526 - TAKAHASHI KAKERU [JP]
- [A] US 2013232999 A1 20130912 - MATSUI TAKAAKI [JP]
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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4350249 A2 20240410; EP 4350249 A3 20240612; CN 117847815 A 20240409; JP 2024055145 A 20240418; US 2024118007 A1 20240411
DOCDB simple family (application)
EP 23196704 A 20230912; CN 202311163465 A 20230911; JP 2022161835 A 20221006; US 202318475195 A 20230926