JP2020193726A5 - - Google Patents
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- JP2020193726A5 JP2020193726A5 JP2019097922A JP2019097922A JP2020193726A5 JP 2020193726 A5 JP2020193726 A5 JP 2020193726A5 JP 2019097922 A JP2019097922 A JP 2019097922A JP 2019097922 A JP2019097922 A JP 2019097922A JP 2020193726 A5 JP2020193726 A5 JP 2020193726A5
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- pulse tube
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- high temperature
- switching valve
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Claims (7)
第１段パルス管と、第２段パルス管と、前記第１段パルス管の低温端と連通している低温端を有する第１段蓄冷器と、前記第２段パルス管の低温端と連通している低温端を有し、前記第１段蓄冷器に直列に接続された第２段蓄冷器と、を備えるコールドヘッドと、
前記第１段蓄冷器の高温端を前記圧縮機吐出口および前記圧縮機吸入口に交互に接続する主圧力切換弁と、
パルス管連通路を介して前記第１段パルス管の高温端と前記第２段パルス管の高温端の両方を前記圧縮機吐出口および前記圧縮機吸入口に交互に接続する副圧力切換弁と、を備え、
前記パルス管連通路は、前記第１段パルス管の高温端および前記第２段パルス管の高温端と前記副圧力切換弁との間に分岐部を有し、前記分岐部で第１パルス管流路と第２パルス管流路に分岐し、前記第１パルス管流路が前記副圧力切換弁を前記第１段パルス管の高温端に接続し、前記第２パルス管流路が前記副圧力切換弁を前記第２段パルス管の高温端に接続し、
前記主圧力切換弁は、前記第１段蓄冷器の高温端が前記圧縮機吐出口および前記圧縮機吸入口のどちらにも接続されない第１待機期間、前記第１段蓄冷器の高温端が前記圧縮機吐出口に接続される吸気期間、前記第１段蓄冷器の高温端が前記圧縮機吐出口および前記圧縮機吸入口のどちらにも接続されない第２待機期間、および前記第１段蓄冷器の高温端が前記圧縮機吸入口に接続される排気期間を順番に繰り返すように構成され、
前記副圧力切換弁は、前記第１待機期間の１／２が経過するまでに前記第１段パルス管の高温端と前記第２段パルス管の高温端の両方を前記圧縮機吐出口に接続し、前記第２待機期間の１／２が経過するまでに前記第１段パルス管の高温端と前記第２段パルス管の高温端の両方を前記圧縮機吸入口に接続するように構成されていることを特徴とする多段式パルス管冷凍機。 A compressor having a compressor discharge port and a compressor suction port,
A first-stage pulse tube, a second-stage pulse tube, a first-stage regenerator having a low-temperature end communicating with the low-temperature end of the first-stage pulse tube, and a low-temperature end of the second-stage pulse tube are communicated with each other. A cold head comprising a second-stage cold storage device having a low temperature end and connected in series to the first-stage cold storage device.
A main pressure switching valve that alternately connects the high temperature end of the first stage cooler to the compressor discharge port and the compressor suction port,
With an auxiliary pressure switching valve that alternately connects both the high temperature end of the first stage pulse tube and the high temperature end of the second stage pulse tube to the compressor discharge port and the compressor suction port via the pulse tube communication passage. , Equipped with
The pulse pipe connecting passage has a branch portion between the high temperature end of the first stage pulse tube and the high temperature end of the second stage pulse tube and the auxiliary pressure switching valve, and the first pulse tube is formed at the branch portion. It branches into a flow path and a second pulse tube flow path, the first pulse tube flow path connects the auxiliary pressure switching valve to the high temperature end of the first stage pulse tube, and the second pulse tube flow path is the sub. Connect the pressure switching valve to the high temperature end of the second stage pulse tube ,
In the main pressure switching valve, the high temperature end of the first stage cooler is the high temperature end of the first stage cooler during the first standby period in which the high temperature end of the first stage cooler is not connected to either the compressor discharge port or the compressor suction port. An intake period connected to the compressor discharge port, a second standby period in which the high temperature end of the first-stage cooler is not connected to either the compressor discharge port or the compressor suction port, and the first-stage cooler. The high temperature end of the compressor is configured to repeat the exhaust period connected to the compressor suction port in order.
The auxiliary pressure switching valve connects both the high temperature end of the first stage pulse tube and the high temperature end of the second stage pulse tube to the compressor discharge port by the time when 1/2 of the first standby period elapses. Then, by the time half of the second standby period elapses, both the high temperature end of the first stage pulse tube and the high temperature end of the second stage pulse tube are configured to be connected to the compressor suction port. A multi-stage pulse tube refrigerator characterized by the fact that it is used.
前記副圧力切換弁は、前記パルス管連通路を介して前記第３段パルス管の高温端も前記圧縮機吐出口および前記圧縮機吸入口に交互に接続し、
前記パルス管連通路は、前記分岐部でさらに第３パルス管流路に分岐し、前記第３パルス管流路が前記副圧力切換弁を前記第３段パルス管の高温端に接続することを特徴とする請求項１から５のいずれかに記載の多段式パルス管冷凍機。 The cold head has a third-stage pulse tube and a third-stage regenerator having a low-temperature end communicating with the low-temperature end of the third-stage pulse tube and connected in series with the second-stage regenerator. , Equipped with
In the auxiliary pressure switching valve, the high temperature end of the third stage pulse tube is also alternately connected to the compressor discharge port and the compressor suction port via the pulse tube communication passage.
The pulse tube communication passage further branches to the third pulse pipe flow path at the branch portion, and the third pulse tube flow path connects the auxiliary pressure switching valve to the high temperature end of the third stage pulse tube. The multi-stage pulse tube refrigerator according to any one of claims 1 to 5 .
第２段パルス管と、
前記第１段パルス管の低温端と連通している低温端を有する第１段蓄冷器と、
前記第２段パルス管の低温端と連通している低温端を有し、前記第１段蓄冷器に直列に接続された第２段蓄冷器と、
前記第１段蓄冷器の高温端を主圧力切換弁に接続する蓄冷器連通路と、
前記第１段パルス管の高温端と前記第２段パルス管の高温端の両方を副圧力切換弁に接続するパルス管連通路と、を備え、
前記パルス管連通路は、前記第１段パルス管の高温端および前記第２段パルス管の高温端と前記副圧力切換弁との間に分岐部を有し、前記分岐部で第１パルス管流路と第２パルス管流路に分岐し、前記第１パルス管流路が前記副圧力切換弁を前記第１段パルス管の高温端に接続し、前記第２パルス管流路が前記副圧力切換弁を前記第２段パルス管の高温端に接続し、
前記主圧力切換弁は、前記第１段蓄冷器の高温端が圧縮機吐出口および圧縮機吸入口のどちらにも接続されない第１待機期間、前記第１段蓄冷器の高温端が前記圧縮機吐出口に接続される吸気期間、前記第１段蓄冷器の高温端が前記圧縮機吐出口および前記圧縮機吸入口のどちらにも接続されない第２待機期間、および前記第１段蓄冷器の高温端が前記圧縮機吸入口に接続される排気期間を順番に繰り返すように構成され、
前記副圧力切換弁は、前記第１待機期間の１／２が経過するまでに前記第１段パルス管の高温端と前記第２段パルス管の高温端の両方を前記圧縮機吐出口に接続し、前記第２待機期間の１／２が経過するまでに前記第１段パルス管の高温端と前記第２段パルス管の高温端の両方を前記圧縮機吸入口に接続するように構成されていることを特徴とする多段式パルス管冷凍機のコールドヘッド。 1st stage pulse tube and
Second stage pulse tube and
A first-stage regenerator having a low-temperature end communicating with the low-temperature end of the first-stage pulse tube,
A second-stage regenerator having a low-temperature end communicating with the low-temperature end of the second-stage pulse tube and connected in series with the first-stage regenerator.
A regenerator communication passage that connects the high temperature end of the first stage regenerator to the main pressure switching valve, and
A pulse tube connecting passage for connecting both the high temperature end of the first stage pulse tube and the high temperature end of the second stage pulse tube to the auxiliary pressure switching valve is provided.
The pulse pipe connecting passage has a branch portion between the high temperature end of the first stage pulse tube and the high temperature end of the second stage pulse tube and the auxiliary pressure switching valve, and the first pulse tube is formed at the branch portion. It branches into a flow path and a second pulse tube flow path, the first pulse tube flow path connects the auxiliary pressure switching valve to the high temperature end of the first stage pulse tube, and the second pulse tube flow path is the sub. Connect the pressure switching valve to the high temperature end of the second stage pulse tube ,
The main pressure switching valve has a first standby period in which the high temperature end of the first stage cooler is not connected to either the compressor discharge port or the compressor suction port, and the high temperature end of the first stage cooler is the compressor. The intake period connected to the discharge port, the second standby period in which the high temperature end of the first-stage cooler is not connected to either the compressor discharge port or the compressor suction port, and the high temperature of the first-stage cooler. The end is configured to sequentially repeat the exhaust period connected to the compressor suction port,
The auxiliary pressure switching valve connects both the high temperature end of the first stage pulse tube and the high temperature end of the second stage pulse tube to the compressor discharge port by the time when 1/2 of the first standby period elapses. Then, by the time half of the second standby period elapses, both the high temperature end of the first stage pulse tube and the high temperature end of the second stage pulse tube are configured to be connected to the compressor suction port. The cold head of the multi-stage pulse tube refrigerator, which is characterized by being
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019097922A JP7186133B2 (en) | 2019-05-24 | 2019-05-24 | Multi-stage pulse tube refrigerator and cold head of multi-stage pulse tube refrigerator |
| CN202080035070.4A CN113825958B (en) | 2019-05-24 | 2020-05-19 | Multi-stage pulse tube refrigerator and cold head of multi-stage pulse tube refrigerator |
| PCT/JP2020/019769 WO2020241377A1 (en) | 2019-05-24 | 2020-05-19 | Multi-stage pulse tube refrigerator and cold head of multi-stage pulse tube refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019097922A JP7186133B2 (en) | 2019-05-24 | 2019-05-24 | Multi-stage pulse tube refrigerator and cold head of multi-stage pulse tube refrigerator |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2020193726A JP2020193726A (en) | 2020-12-03 |
| JP2020193726A5 true JP2020193726A5 (en) | 2022-02-25 |
| JP7186133B2 JP7186133B2 (en) | 2022-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019097922A Active JP7186133B2 (en) | 2019-05-24 | 2019-05-24 | Multi-stage pulse tube refrigerator and cold head of multi-stage pulse tube refrigerator |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7186133B2 (en) |
| CN (1) | CN113825958B (en) |
| WO (1) | WO2020241377A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880225B (en) * | 2021-01-26 | 2022-08-02 | 中国科学院上海技术物理研究所 | Multi-stage U-shaped gas-coupled pulse tube refrigerator connecting tube type heat exchanger and implementation method |
| CN113154714B (en) * | 2021-03-11 | 2022-09-16 | 中国科学院上海技术物理研究所 | Channel type cold end heat exchanger of gas coupling pulse tube refrigerator and implementation method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3936117B2 (en) * | 2000-03-24 | 2007-06-27 | 株式会社東芝 | Pulse tube refrigerator and superconducting magnet system |
| US6629418B1 (en) * | 2002-01-08 | 2003-10-07 | Shi-Apd Cryogenics, Inc. | Two-stage inter-phasing pulse tube refrigerators with and without shared buffer volumes |
| CN101153754A (en) * | 2006-09-29 | 2008-04-02 | 住友重机械工业株式会社 | Refrigerator of pulse tube |
| CN101294752B (en) * | 2007-04-29 | 2011-07-27 | 中国科学院理化技术研究所 | Thermal coupling multilevel pulsatron refrigerating machine |
| JP5172788B2 (en) * | 2009-07-03 | 2013-03-27 | 住友重機械工業株式会社 | 4-valve pulse tube refrigerator |
| US9644867B2 (en) * | 2009-10-27 | 2017-05-09 | Sumitomo Heavy Industries, Ltd. | Rotary valve and a pulse tube refrigerator using a rotary valve |
| JP5497404B2 (en) * | 2009-10-27 | 2014-05-21 | 住友重機械工業株式会社 | Rotary valve and pulse tube refrigerator |
| CN102393096A (en) * | 2011-09-29 | 2012-03-28 | 南京柯德超低温技术有限公司 | Pulse tube refrigerator with device capable of automatically regulating gas flow rate and phase |
| JP2017062064A (en) * | 2015-09-24 | 2017-03-30 | 住友重機械工業株式会社 | Pulse tube freezing machine |
-
2019
- 2019-05-24 JP JP2019097922A patent/JP7186133B2/en active Active
-
2020
- 2020-05-19 CN CN202080035070.4A patent/CN113825958B/en active Active
- 2020-05-19 WO PCT/JP2020/019769 patent/WO2020241377A1/en active Application Filing
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