EP 0526320 B1 19950301 - Compression circuit for a gaseous fluid at a low pressure and temperature.
Title (en)
Compression circuit for a gaseous fluid at a low pressure and temperature.
Title (de)
Kompressionskreislauf eines Gasfluidums bei niedrigem Druck und Temperatur.
Title (fr)
Circuit de compression d'un fluide gazeux à basse pression et à basse température.
Publication
Application
Priority
FR 9109482 A 19910726
Abstract (en)
[origin: JPH05215421A] PURPOSE: To enhance efficiency of the entire system by disposed a heat exchanger being cooled by a fluid generated from a second container between two compressors in a circuit thereby enhancing safety of action while saving power. CONSTITUTION: A helium refrigeration system comprises a cycle compressor 1, a precooling stage 2, a cooling stage 3 and a final expansion unit 4 generating liquid helium in a container 5. Liquid in the container 5 is cooled by a heat exchanger 7, expanded by an expansion unit 8 and extracted to produce liquid and gaseous helium in a cryogenic container 9. Gaseous atmosphere in the container 9 is recompressed and reheated before being returned back to the cycle compressor 1. A first heat exchanger 16 is disposed between second and third compressors 12, 13 and cooled with a liquid taken out from a duct 6 through a passage 17 having a flow controller 170. A duct 17 extends to a second heat exchanger 18 disposed between fourth and fifth compressors 14, 15 and recirculates gas taken out toward the compressor 1. Gas temperature is stabilized in a duct 10 at the inlet the third compressor 13 and at the inlet of the fifth compressors 15.
IPC 1-7
IPC 8 full level
F25J 1/00 (2006.01); F25B 9/02 (2006.01); F25B 9/10 (2006.01); F25J 1/02 (2006.01)
CPC (source: EP US)
F25B 9/10 (2013.01 - EP US); F25J 1/0007 (2013.01 - EP US); F25J 1/0037 (2013.01 - EP US); F25J 1/004 (2013.01 - EP US); F25J 1/0042 (2013.01 - EP US); F25J 1/0065 (2013.01 - EP US); F25J 1/0202 (2013.01 - EP US); F25J 1/0276 (2013.01 - EP US); F25J 1/0292 (2013.01 - EP US); F25J 2230/04 (2013.01 - EP); F25J 2240/40 (2013.01 - EP); F25J 2270/912 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB LI NL
DOCDB simple family (publication)
EP 0526320 A1 19930203; EP 0526320 B1 19950301; DE 69201541 D1 19950406; DE 69201541 T2 19950713; FR 2679635 A1 19930129; FR 2679635 B1 19931015; JP H05215421 A 19930824; US 5265426 A 19931130
DOCDB simple family (application)
EP 92402160 A 19920727; DE 69201541 T 19920727; FR 9109482 A 19910726; JP 19370192 A 19920721; US 91802092 A 19920724