公开(公告)号：EP1188025B1

公开(公告)日：2007-03-14

申请号：EP01930536.6

申请日：2001-04-16

申请人： IGC-APD Cryogenics, Inc.

发明人： GAO, Jin, Lin

IPC分类号： F25B9/00 ,  F25B9/14

CPC分类号： F25B9/145 ,  F25B9/10 ,  F25B2309/1408 ,  F25B2309/1411 ,  F25B2309/1418 ,  F25B2309/1424 ,  F25B2309/14241

摘要： A two-stage pulse tube refrigerator comprises a pressure wave generator-compressor (32), first stage (16) and second stage (18) regenerators, first stage (12) and second stage (14) pulse tubes, heat exchangers (20, 22, 24, 26) and a hybrid phase shift mechanism for the first (12) and second stage (14) pulse tubes. The second stage phase shift mechanism includes double fixed orifices (40, 42) while the first stage shifter is an arrangement including one of a) 4 valves, b) 5 valves, c) 2 active buffers or d) 3 active buffers. The double fixed orifice phase shifter is located either at room temperature or is thermally connected with the first stage cold end. Two-stage pulse tube refrigerators with a hybrid phase shifter have increased second stage regenerator performance at lower temperature. Pressure drop through the valves and compressor power consumption are decreased, and losses from phase interaction between each stage are eliminated.

公开(公告)号：EP1188025A4

公开(公告)日：2003-08-27

申请号：EP01930536

申请日：2001-04-16

申请人： IGC APD CRYOGENICS INC

发明人： GAO JIN LIN

IPC分类号： F25B9/00 ,  F25B9/14

CPC分类号： F25B9/145 ,  F25B9/10 ,  F25B2309/1408 ,  F25B2309/1411 ,  F25B2309/1418 ,  F25B2309/1424 ,  F25B2309/14241

摘要： A two-stage pulse tube refrigerator comprises a pressure wave generator-compressor (32), first stage (16) and second stage (18) regenerators, first stage (12) and second stage (14) pulse tubes, heat exchangers (20, 22, 24, 26) and a hybrid phase shift mechanism for the first (12) and second stage (14) pulse tubes. The second stage phase shift mechanism includes double fixed orifices (40, 42) while the first stage shifter is an arrangement including one of a) 4 valves, b) 5 valves, c) 2 active buffers or d) 3 active buffers. The double fixed orifice phase shifter is located either at room temperature or is thermally connected with the first stage cold end. Two-stage pulse tube refrigerators with a hybrid phase shifter have increased second stage regenerator performance at lower temperature. Pressure drop through the valves and compressor power consumption are decreased, and losses from phase interaction between each stage are eliminated.

公开(公告)号：EP0862715A4

公开(公告)日：2001-11-14

申请号：EP96940396

申请日：1996-11-11

申请人： APD CRYOGENICS INC

发明人： BOIARSKI MIKHAIL ,  YUDIN BORIS V ,  LONGSWORTH RALPH C ,  KHATRI AJAY N

IPC分类号： F25B1/00 ,  C09K5/04 ,  F25B9/00 ,  F25B19/02

CPC分类号： F25B9/006 ,  C09K5/042 ,  C09K2205/13 ,  C09K2205/132

摘要： Mixed refrigerants provide refrigeration at cryogenic temperatures with throttling cycles operating with a one-stage compressor. The refrigerants include noncondensable gases such as helium, neon, or hydrogen to increase the overall cooling capacity of a refrigeration system at the same refrigeration temperature which is attainable without such noncondensable gases. More refrigeration can be produced with existing systems at temperatures above the normal boiling point of nitrogen or argon by adding, for example, helium, than for refrigerant blends without helium. By increasing the return pressure value of the refrigeration cycle in relation to the molar percent of helium present in the refrigerant, a constant refrigeration temperature may be maintained which exhibits greater stability than prior systems operating at the same temperature without helium enrichment.

公开(公告)号：EP0835413A4

公开(公告)日：2001-11-14

申请号：EP96923365

申请日：1996-06-21

申请人： APD CRYOGENICS INC

发明人： LONGSWORTH RALPH CADY ,  BOIARSKY MIKHAIL J ,  KHATRI AJAY

IPC分类号： F25B1/00 ,  C09K5/04 ,  F17C13/00 ,  F25B9/00 ,  F25B41/06 ,  F25B19/00

CPC分类号： F25B9/006 ,  F17C13/006 ,  F17C2221/012 ,  F17C2221/017 ,  F17C2221/038 ,  F17C2223/0161 ,  F17C2223/033 ,  Y02E60/321

摘要： A closed cycle cryogenic refrigerating system (10) with a fixed restrictor (28) operates with a compressor inlet (22) pressure in a range of 0.1 Mpa and 2.5 Mpa. A basic cryogenic refrigerant mixture is used to which is added approximately 3 % to 25 % of helium, hydrogen and/or neon. A ratio of refrigerant density at the inlet of the fixed restrictor (28) between steady-state operation and operation at the beginning of cool-down is in an approximate range of 7 to 17. Relatively rapid cool-down is achieved and evaporator (3) temperature is maintained in an approximate range of 70K to 120K.

公开(公告)号：EP0650574B1

公开(公告)日：1999-10-27

申请号：EP94915944.6

申请日：1994-04-29

申请人： APD CRYOGENICS INC.

发明人： LONGSWORTH, Ralph, C.

IPC分类号： F25B19/02

CPC分类号： F25B9/02 ,  F25B9/006 ,  F25B31/004 ,  F25B2400/12

摘要： A closed cycle refrigerating system for cryogenic temperatures using a single stage compressor (12) with a refrigerant comprising a gas mixture. The refrigerating system includes a heat exchanger (28) having a throttling orifice (34) which is arranged to provide refrigeration, and a single stage oil lubricated compressor (12) for compressing the refrigerant. The compressor is typically of the rolling piston type. The refrigerant is a mixture of at least one cryogenic gas having a normal boiling point below 120 degrees K and at least two other gases having normal boiling point temperatures below 300 degrees K different from each other and from said one gas. There is also included means (18) for cooling the compressed refrigerant and for circulating the cooled refrigerant to the heat exchanger and its throttling orifice and then back to the compressor. The system does not require any cascaded heat exchangers or intermediate phase separators.

摘要翻译： 一种用于使用单级压缩机（12）的低温温度闭合循环制冷系统以及包括气体混合物的制冷剂。 该制冷系统包括具有布置成提供制冷的节流孔（34）的热交换器（28）和用于压缩制冷剂的单级油润滑压缩机（12）。 压缩机通常是滚动活塞式的。 制冷剂是至少一种具有低于120K的标准沸点的低温气体和至少两种具有彼此不同的低于300K的标准沸点温度的其他气体与所述一种气体的混合物。 还包括用于冷却压缩制冷剂并用于将冷却制冷剂循环到热交换器及其节流孔并然后返回到压缩机的装置（18）。 该系统不需要任何级联热交换器或中间相分离器。

公开(公告)号：EP0650574A4

公开(公告)日：1998-01-21

申请号：EP94915944

申请日：1994-04-29

申请人： APD CRYOGENICS INC

发明人： LONGSWORTH RALPH C

IPC分类号： F25B1/00 ,  F25B9/00 ,  F25B9/02 ,  F25B31/00 ,  F25B19/02

CPC分类号： F25B9/02 ,  F25B9/006 ,  F25B31/004 ,  F25B2400/12

摘要： A closed cycle refrigerating system for cryogenic temperatures using a single stage compressor (12) with a refrigerant comprising a gas mixture. The refrigerating system includes a heat exchanger (28) having a throttling orifice (34) which is arranged to provide refrigeration, and a single stage oil lubricated compressor (12) for compressing the refrigerant. The compressor is typically of the rolling piston type. The refrigerant is a mixture of at least one cryogenic gas having a normal boiling point below 120 degrees K and at least two other gases having normal boiling point temperatures below 300 degrees K different from each other and from said one gas. There is also included means (18) for cooling the compressed refrigerant and for circulating the cooled refrigerant to the heat exchanger and its throttling orifice and then back to the compressor. The system does not require any cascaded heat exchangers or intermediate phase separators.

摘要翻译： 一种用于使用单级压缩机（12）的低温温度闭合循环制冷系统以及包括气体混合物的制冷剂。 该制冷系统包括具有布置成提供制冷的节流孔（34）的热交换器（28）和用于压缩制冷剂的单级油润滑压缩机（12）。 压缩机通常是滚动活塞式的。 制冷剂是至少一种具有低于120K的标准沸点的低温气体和至少两种具有彼此不同的低于300K的标准沸点温度的其他气体与所述一种气体的混合物。 还包括用于冷却压缩制冷剂并用于将冷却制冷剂循环到热交换器及其节流孔并然后返回到压缩机的装置（18）。 该系统不需要任何级联热交换器或中间相分离器。

公开(公告)号：EP0811134A1

公开(公告)日：1997-12-10

申请号：EP96906641.0

申请日：1996-02-26

申请人： APD CRYOGENICS INC.

发明人： HILL, Dennis ,  LONGSWORTH, Ralph, C.

IPC分类号： G01R33 ,  F17C13 ,  F25B9 ,  F25D19 ,  G01J5

CPC分类号： F17C13/006 ,  F17C2223/0161 ,  F17C2227/0337 ,  F25D19/006 ,  G01J5/061

摘要： A cryogenic cold head (18) in a canister (14) is partially surrounded by an isolation mass (32). An open portion of the mass (32) permits access for connection of a vapor compression refrigeration unit (22) to the cold head (18), which is highly conductive. Straps (34) of braided copper suspend the isolation mass (32) from the cold head (18), made cold by the refrigeration unit (22). A temperature differential between the cold head (18) and a device-mounting interface (38) on the isolation mass (32) is preferably less than 2.5K per watt of heat transferred. For further vibration isolation, the device (12) is separated from the isolation mass (32) by another braided strap (24) and supported in the canister (14) by struts (16).

摘要翻译： 罐（14）中的低温冷头（18）被隔离块（32）部分地包围。 质量块（32）的开口部分允许进入蒸气压缩制冷单元（22）到高度导电的冷头（18）的连接。 编织铜带（34）将隔离块（32）从冷头（18）悬挂下来，由冷却单元（22）冷却。 冷头（18）与隔离质量块（32）上的设备安装接口（38）之间的温度差优选小于2.5K每瓦传递的热量。 为了进一步振动隔离，装置（12）通过另一编织带（24）与隔离质量块（32）分离并且通过支柱（16）支撑在罐（14）中。

公开(公告)号：EP0167161B1

公开(公告)日：1989-11-08

申请号：EP85108285.9

申请日：1985-07-04

申请人： APD CRYOGENICS INC.

发明人： Longsworth, Ralph Cady ,  Steyert, William Albert

IPC分类号： F25B9/02 ,  F25J1/02

CPC分类号： F28F13/08 ,  F25B9/02 ,  F25B2500/01 ,  F25J5/002 ,  F25J2215/30 ,  F25J2270/912 ,  F25J2290/42 ,  F25J2290/44

公开(公告)号：EP1965157A3

公开(公告)日：2008-09-17

申请号：EP08008753.9

申请日：2001-08-10

申请人： IGC-APD Cryogenics, Inc.

发明人： Longsworth, Ralph C.

IPC分类号： F25B43/02 ,  F25B31/00 ,  F04B39/04

CPC分类号： F04B39/16 ,  F04B39/04 ,  F25B9/14 ,  F25B31/004 ,  F25B43/003 ,  F25B43/02

摘要： In an oil-lubricated helium compressor unit (10), the adsorber (34) can retain all of the oil that might be transferred from the compressor (12) to the adsorber (34) before the system shuts down. No oil is ever transferred or transferable to, for example, the expander in a GM type refrigeration system connected to the unit (10). The compressor (12) itself will shut down because of a protective switch or seize for lack of oil before any oil carries outside the compressor unit (10). The unit (10) and the connected refrigeration system can run for more than a selected design life before the compressor (12) shuts down because the limit of oil in the adsorber (34) has been reached. The adsorber (34) can retain as much oil as might leave the compressor (12) over the life of the system plus a safety margin of at least 25%. The adsorber (34) need not be serviced or replaced for the life of the system.

公开(公告)号：EP1197711A2

公开(公告)日：2002-04-17

申请号：EP01119291.1

申请日：2001-08-10

申请人： IGC-APD Cryogenics, Inc.

发明人： Longsworth, Ralph C.

IPC分类号： F25B43/02 ,  F25B31/00 ,  F04B39/04

CPC分类号： F04B39/16 ,  F04B39/04 ,  F25B9/14 ,  F25B31/004 ,  F25B43/003 ,  F25B43/02

摘要： In an oil-lubricated helium compressor unit (10), the adsorber (34) can retain all of the oil that might be transferred from the compressor (12) to the adsorber (34) before the system shuts down. No oil is ever transferred or transferable to, for example, the expander in a GM type refrigeration system connected to the unit (10). The compressor (12) itself will shut down because of a protective switch or seize for lack of oil before any oil carries outside the compressor unit (10). The unit (10) and the connected refrigeration system can run for more than a selected design life before the compressor (12) shuts down because the limit of oil in the adsorber (34) has been reached. The adsorber (34) can retain as much oil as might leave the compressor (12) over the life of the system plus a safety margin of at least 25%. The adsorber (34) need not be serviced or replaced for the life of the system.

摘要翻译： 在油润滑氦压缩机单元（10）中，吸附器（34）可以在系统关闭之前将所有可能从压缩机（12）转移到吸附器（34）的油保留下来。 例如，连接到单元（10）的GM型制冷系统中的膨胀机不会传输或转移油。 压缩机（12）本身将由于保护开关而关闭，或者在任何油运载到压缩机单元（10）外部之前抓住缺少油的情况。 由于已达到吸附器（34）中的油的极限，因此在压缩机（12）关闭之前，单元（10）和所连接的制冷系统可运行超过选定的设计寿命。 吸附器（34）可以保留在整个系统的使用寿命期间离开压缩机（12）的油量加上至少25％的安全余量。 吸附器（34）不需要为系统的使用寿命进行维修或更换。