公开(公告)号：US20230296294A1

公开(公告)日：2023-09-21

申请号：US18040938

申请日：2021-08-03

申请人： Cryostar SAS

发明人： Guillaume PAGES

IPC分类号： F25B9/10 ,  F25B9/06 ,  F17C3/10

CPC分类号： F25B9/10 ,  F25B9/06 ,  F17C3/10 ,  F17C2221/033 ,  F17C2227/0355 ,  F17C2223/0161

摘要： Simplified closed loop refrigeration system adapted for cryogenic temperatures comprising: a gaseous refrigerant circulating inside the closed loop refrigeration system, a compression section for compressing the refrigerant with at least two compressor stages, at least one of the compressor stages being one centrifugal compressor, at least a motor producing mechanical power to drive at least one of the compressor stages, at least an after cooler after each compression stage, a first heat exchanger for additionally cooling the compressed refrigerant, at least one expansion turbine for expanding the compressed refrigerant, a second heat exchanger for exchanging heat between the expanded refrigerant and an external fluid, a heating section where the expanded refrigerant is heated in counter-current flow inside the first heat-exchanger by the compressed refrigerant, wherein at least one centrifugal compressor being driven only by the expansion turbine and the centrifugal compressors and the expansion turbine use magnetic bearings.

公开(公告)号：US20240219113A1

公开(公告)日：2024-07-04

申请号：US18563616

申请日：2022-06-20

申请人： Cryostar SAS

发明人： Guillaume PAGES ,  Nicolas BRUNNER

IPC分类号： F25J1/02 ,  F25J1/00

CPC分类号： F25J1/0254 ,  F25J1/0025 ,  F25J1/005 ,  F25J1/0204 ,  F25J1/0277 ,  F25J1/0072 ,  F25J2280/40 ,  F25J2290/34

摘要： The invention relates to a method and to a system for avoiding freezing of at least one component of a cryogenic fluid inside a cryogenic heat exchanger by measuring a physical property allowing to indirectly determine the risk of freezing of the least one component of the cryogenic fluid inside the cryogenic heat exchanger.

公开(公告)号：US20190003425A1

公开(公告)日：2019-01-03

申请号：US16071000

申请日：2017-01-09

申请人： CRYOSTAR SAS

发明人： Guillaume PAGES

IPC分类号： F02M21/02 ,  F04B39/00 ,  F04B25/00 ,  F04B49/22 ,  F04B49/06 ,  F04B39/06 ,  F25J1/00 ,  F25J1/02

CPC分类号： F02M21/0245 ,  F02M21/0209 ,  F04B15/08 ,  F04B25/00 ,  F04B39/0011 ,  F04B39/06 ,  F04B41/06 ,  F04B49/065 ,  F04B49/225 ,  F04B2015/081 ,  F25J1/0025 ,  F25J1/0244 ,  F25J1/027 ,  F25J2230/08 ,  F25J2230/22 ,  F25J2230/24 ,  F25J2230/60

摘要： A system for supplying compressed gas to several gas-fed devices is based on a liquid piston gas multistage compressor (100). Gas pressure measurements performed at a gas intake (10), an intermediate gas outlet (20) and at an end gas outlet (30) of the system allow controlling respective gas capacities of the compressor stages. Easy and reliable control can thus be obtained for the system operation. Varying the number of the compressor stages allows matching any pressure requirements for the gas delivery to all the gas-fed devices, and varying the gas capacities of the compressor stages allows easy adaptation to variable gas consumptions of the gas-fed devices.