US20120240610A1 - Cooling device with controllable evaporation temperature - Google Patents

Cooling device with controllable evaporation temperature Download PDF

Info

Publication number
US20120240610A1
US20120240610A1 US13/413,678 US201213413678A US2012240610A1 US 20120240610 A1 US20120240610 A1 US 20120240610A1 US 201213413678 A US201213413678 A US 201213413678A US 2012240610 A1 US2012240610 A1 US 2012240610A1
Authority
US
United States
Prior art keywords
cooling
cooling device
liquefier
evaporator
divided
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/413,678
Other languages
English (en)
Inventor
Franco Sestito
Markus Mayer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bruker Biospin SAS
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Assigned to BRUKER BIOSPIN AG reassignment BRUKER BIOSPIN AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MAYER, MARKUS, SESTITO, FRANCO
Publication of US20120240610A1 publication Critical patent/US20120240610A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B6/00—Compression machines, plants or systems, with several condenser circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0403—Refrigeration circuit bypassing means for the condenser

Definitions

  • the invention concerns a cooling device for cooling a test sample, comprising at least two cascade cooling stages, each comprising at least one coolant line, one compressor, one relief throttle, one evaporator and one liquefier.
  • Devices having such properties are e.g. the device NMR90 of the company Millrock Technology, Springfield, N.Y., USA, the device ULSP90 of the company ULSP bv, Ede, NL and the device FTS XR Air Jet of the company RototecSpintec GmbH, Biebesheim, Germany.
  • This cold gas flow may be realized e.g. through evaporation of liquid gases or cooling a warm gas using heat exchangers that are immersed into liquefied gas. Provision or generation and storage of these liquefied gases requires complex logistics.
  • the warm gas may alternatively also be cooled using a coolant cycle process.
  • a suitable coolant is compressed in a compressor to a higher pressure and is thereby heated, then cooled (desuperheated) in a heat exchanger to a temperature below the liquefaction temperature that prevails at the obtained pressure, thereby dissipating heat, is further liquefied, thereby dissipating further heat, is relieved by a suitable throttle to a lower pressure, and evaporated again in a second heat exchanger, thereby absorbing heat from the gas to be cooled at the low evaporation temperature.
  • the coolant line is divided into n partial lines between the compressor and the liquefier of the last cascade cooling stage, wherein n ⁇ 2, the divided n partial lines can be blocked individually and independently of each other by means of at least n ⁇ 1 valves, the divided partial lines each comprise their own relief throttle, and the divided partial lines are both connected to the evaporator of the last cascade cooling stage.
  • the compressed coolant is divided into two or more parallel paths upstream of the first heat exchanger (liquefier) and guided in this fashion through the liquefier, through a separate respective throttle and to the second heat exchanger (evaporator).
  • the individual paths are selectively individually blocked by the valves thereof, one obtains an overall adjustable throttle effect. 2 n ⁇ 1 different throttle effects can be adjusted for n valves when the individual throttles are properly dimensioned. At least one valve has to be open at any time, and for this reason, one valve can be omitted.
  • the coolant is evaporated, thereby providing the desired cooling power in the second heat exchanger at the evaporation temperature of the coolant at this influenceable pressure, and for this reason, the cooling temperature can also be influenced.
  • the throttles of this device need not be adjustable themselves, which could be realized only with great technical expense in a cascade of cycle processes of a cycle process to be varied with a very low liquefying temperature and therefore low throttle temperature.
  • One particularly preferred embodiment of the inventive cooling device is characterized in that the divided partial lines are guided in parallel through the liquefier.
  • One further advantageous embodiment is characterized in that the evaporator of the last cascade cooling stage is designed as a heat exchanger, a gas to be cooled enters the heat exchanger through a gas inlet, dissipates heat and exits the heat exchanger again through a gas outlet, and the cooled cooling gas is guided to the test sample for cooling it.
  • the heat exchanger is simultaneously the transfer line for the cooling gas and the device can be designed in a simple and space-saving fashion.
  • the invention is particularly advantageous when the cooling device is part of a nuclear magnetic resonance spectroscopy apparatus, in which the cooled gas flow is heated to the desired temperature and higher temperatures can be achieved with less cooling and therefore also less heating, which simplifies control.
  • the inventive cooling device may alternatively also be part of an X-ray spectroscopy apparatus.
  • X-ray crystallography often requires cooling of the test samples.
  • the inventive cooling device is alternatively also advantageously part of an EPR apparatus.
  • FIG. 1 shows a schematic view of an embodiment of the inventive cooling device.
  • the cooling device shown by way of example in FIG. 1 includes a first cascade cooling stage with compressor 1 . 1 , safety pressure switch 1 . 2 , filter 1 . 3 , relief throttle 1 . 5 , and pressure compensating vessel 1 . 4 , and also a second cascade cooling stage with compressor 2 . 1 , safety pressure switch 2 . 2 , filter 2 . 3 , and pressure compensating vessel 2 . 5 .
  • a combined air heat exchanger with fan 5 is e.g. used as liquefier 3 for the first cascade cooling stage and as desuperheater 4 for the second cascade cooling stage.
  • a heat exchanger 6 is used as evaporator for the first cascade cooling stage and as liquefier for the second cascade cooling stage.
  • a heat exchanger 7 illustrated by way of example as transfer line, is used as evaporator for the second cascade cooling stage to provide the desired cooling power in that a gas to be cooled is guided from the inlet 7 . 1 to the outlet 7 . 2 .
  • the coolant line of the illustrated embodiment Downstream of the compressor 2 . 1 of the second cascade cooling stage, the coolant line of the illustrated embodiment is divided into two partial lines A, B. These are guided in parallel through the heat exchanger 6 downstream of the respective valves 2 . 7 , 2 . 8 . Each of the partial lines A, B, has its own relief throttle 2 . 5 , 2 . 6 . The two partial lines A, B, are subsequently guided into the heat exchanger 7 . The evaporation temperature can then be controlled via connecting or disconnecting a partial line A, B, by means of the valves 2 . 7 , 2 . 8 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Sampling And Sample Adjustment (AREA)
US13/413,678 2011-03-25 2012-03-07 Cooling device with controllable evaporation temperature Abandoned US20120240610A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011006174.6A DE102011006174B4 (de) 2011-03-25 2011-03-25 Kältevorrichtung mit steuerbarer Verdampfungstemperatur
DE102011006174.6 2011-03-25

Publications (1)

Publication Number Publication Date
US20120240610A1 true US20120240610A1 (en) 2012-09-27

Family

ID=46052213

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/413,678 Abandoned US20120240610A1 (en) 2011-03-25 2012-03-07 Cooling device with controllable evaporation temperature

Country Status (3)

Country Link
US (1) US20120240610A1 (de)
DE (1) DE102011006174B4 (de)
GB (1) GB2489568B (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6415619B1 (en) * 2001-03-09 2002-07-09 Hewlett-Packard Company Multi-load refrigeration system with multiple parallel evaporators
US20030024262A1 (en) * 2001-08-03 2003-02-06 Dieter Mosemann Arrangement for cascade refrigeration system
US6766652B2 (en) * 2002-12-18 2004-07-27 Gsle Development Corporation Dual independent chamber ultra-low temperature freezer
US6993918B1 (en) * 2004-02-12 2006-02-07 Advanced Thermal Sciences Thermal control systems for process tools requiring operation over wide temperature ranges
US20070151270A1 (en) * 2005-12-15 2007-07-05 Denso Corporation Refrigerating cycle
US20080302116A1 (en) * 2002-12-03 2008-12-11 Nihon Freezer Co., Ltd Refrigerating Control System Using Non-Azeotropic Refrigerant

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5669234A (en) * 1996-07-16 1997-09-23 Phillips Petroleum Company Efficiency improvement of open-cycle cascaded refrigeration process
CN201672739U (zh) * 2010-05-13 2010-12-15 中原工学院 一种具有气态中温热源及双低温热源的复叠式高温热泵

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6415619B1 (en) * 2001-03-09 2002-07-09 Hewlett-Packard Company Multi-load refrigeration system with multiple parallel evaporators
US20030024262A1 (en) * 2001-08-03 2003-02-06 Dieter Mosemann Arrangement for cascade refrigeration system
US20080302116A1 (en) * 2002-12-03 2008-12-11 Nihon Freezer Co., Ltd Refrigerating Control System Using Non-Azeotropic Refrigerant
US6766652B2 (en) * 2002-12-18 2004-07-27 Gsle Development Corporation Dual independent chamber ultra-low temperature freezer
US6993918B1 (en) * 2004-02-12 2006-02-07 Advanced Thermal Sciences Thermal control systems for process tools requiring operation over wide temperature ranges
US20070151270A1 (en) * 2005-12-15 2007-07-05 Denso Corporation Refrigerating cycle

Also Published As

Publication number Publication date
DE102011006174A1 (de) 2012-09-27
DE102011006174B4 (de) 2014-07-24
GB201204856D0 (en) 2012-05-02
GB2489568A (en) 2012-10-03
GB2489568B (en) 2017-11-15

Similar Documents

Publication Publication Date Title
US11215384B2 (en) System and method for cryogenic cooling
US20110277498A1 (en) Method and apparatus for controlling a regrigerant compressor, and use thereof in a method of cooling a hydrocarbon stream
US20170138651A1 (en) Branching means for a refrigerant flow of a refrigerant circuit
JP6612320B2 (ja) 極低温冷却装置を調整するための方法および対応する装置
US10816576B2 (en) Cooling device for semiconductor inspection apparatus to adjust temperature of inspection apparatus of semiconductor wafer
RU2017127006A (ru) Способ и устройство для охлаждения криогенного теплообменника и способ сжижения потока углеводородов
US20120240610A1 (en) Cooling device with controllable evaporation temperature
US20120240609A1 (en) Cooling device with controllable evaporation temperature
US20090188277A1 (en) Method and apparatus for controlling a refrigerant compressor, and method for cooling a hydrocarbon stream
US10677523B2 (en) Method for cooling a process flow
KR100927391B1 (ko) 반도체 공정설비용 칠러 장치 및 그 제어방법
US20120227418A1 (en) Cooling unit
JP2013091367A5 (de)
US9921009B2 (en) Dual-use ram-primary/regen hx
EP3830498A1 (de) Hochtemperatursupraleiterkühlsystem
CN109826781A (zh) 具备跨/亚临界测试功能的二氧化碳压缩机性能试验系统
US20230204258A1 (en) Apparatus and method for generating cryogenic temperatures and use thereof
US20240102728A1 (en) Installation and process for production of a cryogenic fluid
Perin et al. A new cryogenic test facility for large superconducting devices at CERN
Caillaud et al. Evolution of the Standard Helium Liquefier and Refrigerator Range Designed by Air Liquide DTA, France.
Dhard et al. Final acceptance tests of helium refrigerator for Wendelstein 7-X
CN117553465A (zh) 一种温控系统及其控制方法
Peterson et al. 650 MHz Cryomodules for Project X at Fermilab–Requirements and Concepts
Bhattacharya et al. Developing Control of Cryo-Pump Test Cold-Box System: Some Investigations
Yuksek et al. Performance validation of refrigeration recovery for experimental hall high target loads

Legal Events

Date Code Title Description
AS Assignment

Owner name: BRUKER BIOSPIN AG, SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SESTITO, FRANCO;MAYER, MARKUS;REEL/FRAME:028253/0716

Effective date: 20120228

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION