EP 2211124 A1 20100728 - CRYOGENIC REFRIGERATOR AND CONTROL METHOD THEREFOR
Title (en)
CRYOGENIC REFRIGERATOR AND CONTROL METHOD THEREFOR
Title (de)
TIEFKÜHLER UND STEUERVERFAHREN DAFÜR
Title (fr)
RÉFRIGÉRATEUR CRYOGÉNIQUE ET SON PROCÉDÉ DE COMMANDE
Publication
Application
Priority
- JP 2008070108 W 20081105
- JP 2007298812 A 20071119
Abstract (en)
A cryogenic refrigerator (10) which generates a cryogenic temperature by compressing and expanding a working gas in a closed loop (11). The cryogenic refrigerator comprises a bypass line (22) allowing a high-pressure portion and a low-pressure portion to communicate with each other, a gas storage tank (24) located midway in the bypass line and having pressure regulation valves (23a, 23b) on the high-pressure side and the low-pressure side, respectively, and a pressure control unit (26) controlling the pressure regulation valves. The pressure control unit (26) controls the pressure regulation valves (23a, 23b) so that the pressure in the gas storage tank (24) is equal to the pressure in the closed loop at room temperature and in a stopped state and so that the pressure in the gas storage tank (24) is between the pressures in the high-pressure portion and in the low-pressure portion and is close to the pressure in the low-pressure portion in an operating state.
IPC 8 full level
F25B 9/06 (2006.01); F25B 9/00 (2006.01); F25J 1/00 (2006.01)
CPC (source: EP US)
F25B 9/06 (2013.01 - EP US); F25B 9/14 (2013.01 - EP US); F25J 1/005 (2013.01 - EP US); F25J 1/0062 (2013.01 - EP US); F25J 1/0065 (2013.01 - EP US); F25J 1/0248 (2013.01 - EP US); F25J 1/0276 (2013.01 - EP); F25J 1/0288 (2013.01 - EP); F25B 45/00 (2013.01 - EP US); F25B 2309/1401 (2013.01 - EP US); F25B 2400/16 (2013.01 - EP US); F25B 2500/27 (2013.01 - EP US); F25B 2600/2519 (2013.01 - EP US); F25J 2245/02 (2013.01 - EP US); F25J 2270/16 (2013.01 - EP US); F25J 2270/912 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
EP 2211124 A1 20100728; EP 2211124 A4 20150722; CN 101861500 A 20101013; CN 101861500 B 20120718; JP 2009121786 A 20090604; KR 101161339 B1 20120629; KR 20100087135 A 20100803; US 2010275616 A1 20101104; WO 2009066565 A1 20090528
DOCDB simple family (application)
EP 08851240 A 20081105; CN 200880116901 A 20081105; JP 2007298812 A 20071119; JP 2008070108 W 20081105; KR 20107009342 A 20081105; US 74354508 A 20081105