JP7366817B2 - ヘリウム循環システム、極低温冷凍方法、および生体磁気計測装置 - Google Patents
ヘリウム循環システム、極低温冷凍方法、および生体磁気計測装置 Download PDFInfo
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- JP7366817B2 JP7366817B2 JP2020051875A JP2020051875A JP7366817B2 JP 7366817 B2 JP7366817 B2 JP 7366817B2 JP 2020051875 A JP2020051875 A JP 2020051875A JP 2020051875 A JP2020051875 A JP 2020051875A JP 7366817 B2 JP7366817 B2 JP 7366817B2
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- 239000001307 helium Substances 0.000 title claims description 58
- 229910052734 helium Inorganic materials 0.000 title claims description 58
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims description 53
- 238000005259 measurement Methods 0.000 title claims description 14
- 238000007710 freezing Methods 0.000 title claims description 8
- 230000008014 freezing Effects 0.000 title claims description 8
- 238000000034 method Methods 0.000 title claims description 8
- 239000007789 gas Substances 0.000 claims description 215
- 238000011084 recovery Methods 0.000 claims description 101
- 239000003507 refrigerant Substances 0.000 claims description 86
- 239000007788 liquid Substances 0.000 claims description 30
- 238000001816 cooling Methods 0.000 description 39
- 238000012546 transfer Methods 0.000 description 22
- 230000003925 brain function Effects 0.000 description 16
- 238000010586 diagram Methods 0.000 description 8
- 150000002371 helium Chemical class 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 210000004556 brain Anatomy 0.000 description 3
- 230000010365 information processing Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 210000002569 neuron Anatomy 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001868 water Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000002582 magnetoencephalography Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000005062 synaptic transmission Effects 0.000 description 1
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
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
-
- 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
- F25B23/00—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect
- F25B23/006—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect boiling cooling systems
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
-
- 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
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
- F25J1/0062—Light or noble gases, mixtures thereof
- F25J1/0065—Helium
-
- 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/10—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point with several cooling stages
-
- 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
- F25B9/145—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle pulse-tube cycle
Description
10 ヘリウム循環システム
11 極低温冷凍機(冷凍機)
13 蒸発ガス回収部
14 蒸発ガス回収管(第二経路,第四経路)
14Ad,14Bc 開閉弁(流量調整手段)
15 保管ガス供給管(第三経路)
15c ポンプ(流量制御手段)
19 制御部
24 移送管(第一経路(第二経路))
26 温度計
100 生体磁気計測装置
101 脳機能測定装置(測定装置)
Claims (6)
- ガス冷媒を冷却して液体冷媒にする冷凍機と、
前記液体冷媒を保持するデュワと、
前記デュワにて蒸発した前記ガス冷媒を回収する蒸発ガス回収部と、
前記冷凍機から前記デュワに前記液体冷媒を送る第一経路と、
前記デュワから前記冷凍機を介して前記蒸発ガス回収部に前記ガス冷媒を送る第二経路と、
前記蒸発ガス回収部から前記冷凍機に前記ガス冷媒を送る第三経路と、
前記デュワから前記冷凍機を介さず前記蒸発ガス回収部に前記ガス冷媒を送る第四経路と、
前記冷凍機の駆動時に、前記第一経路により前記冷凍機から前記デュワに前記液体冷媒を送りつつ、前記第三経路により前記蒸発ガス回収部から前記冷凍機に前記ガス冷媒を送る一方で、前記冷凍機の停止時に、前記第二経路により前記デュワから前記冷凍機を介して前記蒸発ガス回収部に前記ガス冷媒を送りつつ、前記第四経路により前記デュワから前記冷凍機を介さず前記蒸発ガス回収部に前記ガス冷媒を送る制御部と、
を備える、ヘリウム循環システム。 - 前記第二経路と前記第四経路との前記ガス冷媒の流量を調整する流量調整手段と、
を備える、請求項1に記載のヘリウム循環システム。 - 前記冷凍機の温度を計測する温度計を備え、
前記制御部は、前記温度計が計測した温度に応じて前記流量調整手段を制御する、
請求項2に記載のヘリウム循環システム。 - 前記第三経路に、前記蒸発ガス回収部から前記冷凍機に送る前記ガス冷媒の流量を制御する流量制御手段を備える、請求項1から3のいずれか1項に記載のヘリウム循環システム。
- ガス冷媒を冷却して液体冷媒にする冷凍機と、
前記液体冷媒を保持するデュワと、
前記デュワにて蒸発した前記ガス冷媒を回収する蒸発ガス回収部と、
前記冷凍機から前記デュワに前記液体冷媒を送る第一経路と、
前記デュワから前記冷凍機を介して前記蒸発ガス回収部に前記ガス冷媒を送る第二経路と、
前記蒸発ガス回収部から前記冷凍機に前記ガス冷媒を送る第三経路と、
前記デュワから前記冷凍機を介さず前記蒸発ガス回収部に前記ガス冷媒を送る第四経路と、
を備える、ヘリウム循環システムを用い、
前記冷凍機の駆動時に、前記第一経路により前記冷凍機から前記デュワに前記液体冷媒を送りつつ、前記第三経路により前記蒸発ガス回収部から前記冷凍機に前記ガス冷媒を送る一方で、前記冷凍機の停止時に、前記第二経路により前記デュワから前記冷凍機を介して前記蒸発ガス回収部に前記ガス冷媒を送りつつ、前記第四経路により前記デュワから前記冷凍機を介さず前記蒸発ガス回収部に前記ガス冷媒を送る、極低温冷凍方法。 - 請求項1から4のいずれか1項に記載のヘリウム循環システムと、
前記ヘリウム循環システムの前記冷凍機から前記デュワに送られた前記液体冷媒により冷却される測定装置と、
を備える、生体磁気計測装置。
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JP2020051875A JP7366817B2 (ja) | 2020-03-23 | 2020-03-23 | ヘリウム循環システム、極低温冷凍方法、および生体磁気計測装置 |
US17/208,210 US20210293475A1 (en) | 2020-03-23 | 2021-03-22 | Helium circulation system, cryogenic refrigeration method, and biomagnetism measuring apparatus |
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JP2020051875A JP7366817B2 (ja) | 2020-03-23 | 2020-03-23 | ヘリウム循環システム、極低温冷凍方法、および生体磁気計測装置 |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2014527610A (ja) | 2011-07-14 | 2014-10-16 | カンタム デザイン, インコーポレイテッドQuantum Design, Inc. | 圧力制御された液化チャンバーを備える液化装置 |
JP6157982B2 (ja) | 2013-08-08 | 2017-07-05 | 株式会社東芝 | 電気車用電力変換装置 |
WO2019042684A1 (en) | 2017-08-30 | 2019-03-07 | Siemens Healthcare Limited | CRYOGENIC COOLING SYSTEM TOLERANT TO MALFUNCTIONS |
JP6602456B2 (ja) | 2016-03-03 | 2019-11-06 | 株式会社リコー | 磁気計測装置 |
Family Cites Families (5)
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CH644442A5 (de) * | 1980-04-29 | 1984-07-31 | Sulzer Ag | Vorrichtung zum erzeugen von kaelte. |
JP4145673B2 (ja) * | 2003-02-03 | 2008-09-03 | 独立行政法人科学技術振興機構 | 汚染物質排出機能を備えた循環式液体ヘリウム再液化装置、その装置からの汚染物質排出方法、その装置に使用する精製器およびトランスファーチューブ |
DE102004037173B3 (de) * | 2004-07-30 | 2005-12-15 | Bruker Biospin Ag | Vorrichtung zur kryogenverlustfreien Kühlung einer Kryostatanordnung |
WO2016055915A1 (en) * | 2014-10-09 | 2016-04-14 | Elekta Ab (Publ). | An apparatus and a method for helium collection and reliquefaction in a magnetoencephalography measurement device |
JP6626816B2 (ja) * | 2016-11-24 | 2019-12-25 | ジャパンスーパーコンダクタテクノロジー株式会社 | 超電導コイルの予冷方法及び超電導マグネット装置 |
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Patent Citations (4)
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JP2014527610A (ja) | 2011-07-14 | 2014-10-16 | カンタム デザイン, インコーポレイテッドQuantum Design, Inc. | 圧力制御された液化チャンバーを備える液化装置 |
JP6157982B2 (ja) | 2013-08-08 | 2017-07-05 | 株式会社東芝 | 電気車用電力変換装置 |
JP6602456B2 (ja) | 2016-03-03 | 2019-11-06 | 株式会社リコー | 磁気計測装置 |
WO2019042684A1 (en) | 2017-08-30 | 2019-03-07 | Siemens Healthcare Limited | CRYOGENIC COOLING SYSTEM TOLERANT TO MALFUNCTIONS |
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