JP2008267735A - パルス管冷凍機 - Google Patents
パルス管冷凍機 Download PDFInfo
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- JP2008267735A JP2008267735A JP2007113434A JP2007113434A JP2008267735A JP 2008267735 A JP2008267735 A JP 2008267735A JP 2007113434 A JP2007113434 A JP 2007113434A JP 2007113434 A JP2007113434 A JP 2007113434A JP 2008267735 A JP2008267735 A JP 2008267735A
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- tube refrigerator
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- 239000007789 gas Substances 0.000 claims abstract description 71
- 238000001816 cooling Methods 0.000 claims abstract description 58
- 239000001307 helium Substances 0.000 claims abstract description 22
- 229910052734 helium Inorganic materials 0.000 claims abstract description 22
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 229910052754 neon Inorganic materials 0.000 claims description 3
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 238000009826 distribution Methods 0.000 description 21
- 238000010586 diagram Methods 0.000 description 16
- 238000002595 magnetic resonance imaging Methods 0.000 description 14
- 238000012546 transfer Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011232 storage material Substances 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
- 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
-
- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1408—Pulse-tube cycles with pulse tube having U-turn or L-turn type geometrical arrangements
-
- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1412—Pulse-tube cycles characterised by heat exchanger details
-
- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1413—Pulse-tube cycles characterised by performance, geometry or theory
-
- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1418—Pulse-tube cycles with valves in gas supply and return lines
-
- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1421—Pulse-tube cycles characterised by details not otherwise provided for
-
- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1424—Pulse tubes with basic schematic including an orifice and a reservoir
- F25B2309/14241—Pulse tubes with basic schematic including an orifice reservoir multiple inlet pulse tube
-
- 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
- F25B2400/17—Re-condensers
-
- 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
- F25D19/006—Thermal coupling structure or interface
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
【解決手段】ヘリウム雰囲気内で用いられるパルス管冷凍機であって、1段目蓄冷器7と、2段目蓄冷器26と、1段目パルス管10と、2段目パルス管40Aと、1段目冷却ステージ30と、2段目冷却ステージ25とを有し、かつ、2段目パルス管40Aの途中位置の1段目冷却ステージ30と対応するステージ対応位置に、前記ステージ対応位置以外の部位に比べて熱交換効率を高めた熱交換部45を設ける。
【選択図】図1
Description
非真空雰囲気内で用いられるパルス管冷凍機であって、
作動ガスに対し圧力振動を発生させる圧力振動発生機と、
前記圧力振動発生機に高温側が接続された1段目蓄冷器と、
該1段目蓄冷器に高温側が接続された2段目蓄冷器と、
高温側が第1のバッファタンクに接続されると共に、低温側が前記1段目蓄冷器の低温側に接続された1段目パルス管と、
高温側が第2のバッファタンクに接続されると共に、低温側が前記2段目蓄冷器の低温側に接続された2段目パルス管と、
前記1段目蓄冷器と前記1段目パルス管との接続位置に設けられた1段目冷却ステージと、
前記2段目蓄冷器と前記2段目パルス管との接続位置に設けられた2段目冷却ステージとを有し、
かつ、前記2段目パルス管の途中位置で前記1段目冷却ステージと対応するステージ対応位置に、前記2段目パルス管内を流れる前記作動ガスの寒冷により、前記ステージ対応位置以外の部位に比べて熱交換効率を高めた熱交換部を設けたことを特徴とするパルス管冷凍機により解決することができる。
これにより、パルス管冷凍機を非真空雰囲気内で使用しても、2段目パルス管と蓄冷器との温度差に起因した対流損失が発生することを抑制することができる。
次に、2段目パルス管40Aに小径部45を設けたことによる作用,効果について、図3を用いて説明する。
先ず、1段目及び2段目蓄冷器7,26の温度分布Aに注目すると、2段目蓄冷器26の低温側端部である位置P0では、その温度は約4Kとなっている。この位置P0より高温側端部に向かう従い、1段目及び2段目蓄冷器7,26の温度は上昇する。
7 1段目蓄冷器
10 1段目パルス管
14 第1のバッファタンク
21 第2のバッファタンク
25 2段目冷却ステージ
26 2段目蓄冷器
30,140 1段目冷却ステージ
40A〜40E 2段目パルス管
43 上部パルス管
44 下部パルス管
45,141 小径部
51 高温側フランジ
60 クライオスタットハウジング
64 放射シールド
67 MRI磁石
70,71 整流器
80 単孔プラグ
81,91,131 流通孔
90 多孔プラグ
120 メッシュプラグ
130 連結部材
150 バイパス通路
Claims (7)
- 非真空雰囲気内で用いられるパルス管冷凍機であって、
作動ガスに対し圧力振動を発生させる圧力振動発生機と、
前記圧力振動発生機に高温側が接続された1段目蓄冷器と、
該1段目蓄冷器に高温側が接続された2段目蓄冷器と、
高温側が第1のバッファタンクに接続されると共に、低温側が前記1段目蓄冷器の低温側に接続された1段目パルス管と、
高温側が第2のバッファタンクに接続されると共に、低温側が前記2段目蓄冷器の低温側に接続された2段目パルス管と、
前記1段目蓄冷器と前記1段目パルス管との接続位置に設けられた1段目冷却ステージと、
前記2段目蓄冷器と前記2段目パルス管との接続位置に設けられた2段目冷却ステージとを有し、
かつ、前記2段目パルス管の途中位置で前記1段目冷却ステージと対応するステージ対応位置に、前記2段目パルス管内を流れる前記作動ガスとの熱交換により、前記ステージ対応位置以外の部位に比べて熱交換効率を高めた熱交換部を設けたことを特徴とするパルス管冷凍機。 - 前記熱交換部は、前記ステージ対応位置以外の部位の流路面積に比べ、前記ステージ対応位置の流路面積を小さくした構成であることを特徴とする請求項1記載のパルス管冷凍機。
- 前記熱交換部は、基部に流通孔を形成した構成であることを特徴とする請求項1記載のパルス管冷凍機。
- 前記熱交換部は、多孔性材料により構成されていることを特徴とする請求項1記載のパルス管冷凍機。
- 前記熱交換部の前記パルス管の長手方向に沿った長さをLとし、前記1段目冷却ステージの厚さをWとした場合、0.8×W≦L≦1.20×Wとなるよう設定したことを特徴とする請求項2乃至4のいずれか1項に記載のパルス管冷凍機。
- 前記熱交換部を挟んだ上下位置に、前記作動ガスの流れを整える整流器を設けたことを特徴とする請求項1乃至5のいずれか1項に記載のパルス管冷凍機。
- 前記非真空雰囲気は、ヘリウム、水素、ネオンの群から選択される少なくも一種のガスを含む雰囲気であることを特徴とする請求項1乃至6のいずれか1項に記載のパルス管冷凍機。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007113434A JP4279889B2 (ja) | 2007-04-23 | 2007-04-23 | パルス管冷凍機 |
GB0719140A GB2448783B (en) | 2007-04-23 | 2007-10-01 | Pulse tube cryocooler |
US11/905,432 US20080256958A1 (en) | 2007-04-23 | 2007-10-01 | Pulse tube cryocooler |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007113434A JP4279889B2 (ja) | 2007-04-23 | 2007-04-23 | パルス管冷凍機 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008267735A true JP2008267735A (ja) | 2008-11-06 |
JP4279889B2 JP4279889B2 (ja) | 2009-06-17 |
Family
ID=38701971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007113434A Active JP4279889B2 (ja) | 2007-04-23 | 2007-04-23 | パルス管冷凍機 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20080256958A1 (ja) |
JP (1) | JP4279889B2 (ja) |
GB (1) | GB2448783B (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015129592A (ja) * | 2014-01-06 | 2015-07-16 | 住友重機械工業株式会社 | パルス管冷凍機 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4843067B2 (ja) * | 2009-04-08 | 2011-12-21 | 住友重機械工業株式会社 | パルスチューブ冷凍機 |
JP6305219B2 (ja) * | 2014-06-05 | 2018-04-04 | 住友重機械工業株式会社 | スターリング型パルス管冷凍機 |
US10126023B2 (en) | 2015-02-19 | 2018-11-13 | The Aerospace Corporation | Multistage pulse tube coolers |
CN108344199B (zh) * | 2017-01-25 | 2020-11-27 | 同济大学 | 一种多级脉管制冷机装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3445910A (en) * | 1966-09-09 | 1969-05-27 | Gen Motors Corp | Method of manufacturing a wire cloth regenerator |
NL6701140A (ja) * | 1967-01-25 | 1968-07-26 | ||
US4359872A (en) * | 1981-09-15 | 1982-11-23 | North American Philips Corporation | Low temperature regenerators for cryogenic coolers |
CN1035788C (zh) * | 1992-01-04 | 1997-09-03 | 中国科学院低温技术实验中心 | 多路旁通脉冲管制冷机 |
JP2697707B2 (ja) * | 1995-10-12 | 1998-01-14 | 株式会社移動体通信先端技術研究所 | パルス管冷凍機 |
US6715300B2 (en) * | 2001-04-20 | 2004-04-06 | Igc-Apd Cryogenics | Pulse tube integral flow smoother |
US7568351B2 (en) * | 2005-02-04 | 2009-08-04 | Shi-Apd Cryogenics, Inc. | Multi-stage pulse tube with matched temperature profiles |
-
2007
- 2007-04-23 JP JP2007113434A patent/JP4279889B2/ja active Active
- 2007-10-01 GB GB0719140A patent/GB2448783B/en not_active Expired - Fee Related
- 2007-10-01 US US11/905,432 patent/US20080256958A1/en not_active Abandoned
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015129592A (ja) * | 2014-01-06 | 2015-07-16 | 住友重機械工業株式会社 | パルス管冷凍機 |
Also Published As
Publication number | Publication date |
---|---|
GB2448783B (en) | 2009-04-08 |
GB2448783A (en) | 2008-10-29 |
US20080256958A1 (en) | 2008-10-23 |
JP4279889B2 (ja) | 2009-06-17 |
GB0719140D0 (en) | 2007-11-07 |
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