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11. 发明申请

US20080245077A1 Multiple Rotary Valve For Pulse Tube Refrigerator 审中-公开
标题翻译：多管旋转阀用于脉管冷冻机
公开(公告)号：US20080245077A1
公开(公告)日：2008-10-09
申请号：US11910088
申请日：2005-06-10
申请人： Mingyao Xu , Eric Seitz
发明人： Mingyao Xu , Eric Seitz
IPC分类号： F25B9/14 , F16K5/00
CPC分类号： F16K11/0655 , F16K31/041 , F25B9/145 , F25B2309/006 , F25B2309/1408 , F25B2309/14181 , F25B2309/14241 , Y10T137/86533 , Y10T137/86863
摘要： A rotary disc valve unit and refrigerators containing a rotary disc valve unit that has multiple valves, in which at least one rotary valve has ports connecting to the regenerator and at least one rotary valve has ports connecting to the warm ends of one or more pulse tubes where the rotary valve with ports for the regenerator has lighter contact than the rotary valve with ports for the pulse tubes. The valve face is divided into an inner area with ports for the pulse tubes and an outer area with ports for the regenerator, the inner area having a greater sealing pressure than the outer area.
摘要翻译：旋转盘阀单元和包含旋转盘阀单元的冰箱，其具有多个阀，其中至少一个旋转阀具有连接到再生器的端口，并且至少一个旋转阀具有连接到一个或多个脉冲管的暖端的端口其中具有用于再生器的端口的旋转阀具有比具有用于脉冲管的端口的旋转阀更轻的接触。阀面被分成具有用于脉冲管的端口的内部区域和具有用于再生器的端口的外部区域，内部区域具有比外部区域更大的密封压力。

12. 发明申请

US20080092588A1 Reduced Input Power Cryogenic Refrigerator 有权
标题翻译：降低输入功率的低温冰箱
公开(公告)号：US20080092588A1
公开(公告)日：2008-04-24
申请号：US11721513
申请日：2005-01-13
申请人： Mingyao Xu , Jin Gao
发明人： Mingyao Xu , Jin Gao
IPC分类号： F25J1/00
CPC分类号： F25B9/145 , F25B9/14 , F25B2309/1408 , F25B2309/1411 , F25B2309/1418 , F25B2309/1424 , F25B2309/14241 , F25B2600/2519
摘要： The present invention relates to valved cryogenic refrigerators, in particular, Gifford McMahon (GM) refrigerators, and GM type pulse tube refrigerators where gas is cycled between high and low pressures by a valve mechanism that connects to an expander. Input power is reduced by use of a buffer volume which stores gas that flows to and from the warm end of the regenerator through a valve that opens and closes during the periods when the main supply and return valves are closed and is closed when the main supply and return valves are open.
摘要翻译：本发明涉及带阀的低温冰箱，特别是吉福德·麦克马洪（GM）冰箱，以及GM型脉冲管制冷器，其中气体通过连接到膨胀机的阀机构在高压和低压之间循环。通过使用缓冲体积来减少输入功率，该缓冲体积存储在再生器的暖端流动的气体通过在主供给和返回阀关闭的时段期间打开和关闭的阀，当主供应回流阀打开。

13. 发明授权

US09644867B2 Rotary valve and a pulse tube refrigerator using a rotary valve 有权
公开(公告)号：US09644867B2
公开(公告)日：2017-05-09
申请号：US12909882
申请日：2010-10-22
申请人： Mingyao Xu
发明人： Mingyao Xu
IPC分类号： F25B9/00 , F16K31/02 , F25B9/14
CPC分类号： F25B9/145 , F25B2309/14181
摘要： A rotary valve of a multivalve type pulse tube refrigerator includes: a stationary seat; a rotary disk to change a coolant path by rotating while surface-contacting with a face of the stationary seat; a plurality of first ports provided in the face of the stationary seat to supply a high-pressure coolant to a regenerator and exhaust a low-pressure coolant from the regenerator; and a plurality of second ports provided in the face of the stationary seat to supply a high-pressure coolant to a pulse tube and exhaust a low-pressure coolant from the pulse tube. The first ports are arranged in a first circular track area in rotation symmetry with respect to the center of the face. The second ports are arranged in a second circular track area in rotation symmetry with respect to the center of the face.

14. 发明授权

US09182156B2 Cryogenic refrigerator, cryopump and displacer 有权
标题翻译：低温冰箱，低温泵和置换器
公开(公告)号：US09182156B2
公开(公告)日：2015-11-10
申请号：US13632252
申请日：2012-10-01
申请人： Mingyao Xu
发明人： Mingyao Xu
IPC分类号： F25B9/00 , B01D8/00 , F25B9/14 , F25B9/10 , F04B37/08
CPC分类号： F25B9/14 , B01D8/00 , F04B37/08 , F25B9/10 , F25B2309/003
摘要： A two-stage GM cryogenic refrigerator includes a displacer having a low-temperature side and a high-temperature side and a motor configured to drive the displacer. The motor is configured to be rotatable forward in cooling and backward in increasing a temperature. The cryogenic refrigerator further includes a resin provided on an outer circumferential surface of the displacer. A thickness of the resin is thinner on the high-temperature side than on the low-temperature side.
摘要翻译：两级GM低温冰箱包括具有低温侧和高温侧的置换器和构造成驱动置换器的马达。电动机被构造成在增加温度时在冷却和向后可向前旋转。低温冷冻机还包括设置在置换器的外周面上的树脂。树脂的厚度在高温侧比在低温侧更薄。

15. 发明申请

US20110061404A1 REGENERATIVE REFRIGERATOR 审中-公开
标题翻译：再生制冷机
公开(公告)号：US20110061404A1
公开(公告)日：2011-03-17
申请号：US12880068
申请日：2010-09-11
申请人： MASAYUKI ISHIZUKA , Yuichi Tateishi , Mingyao Xu , Kyosuke Nakano
发明人： MASAYUKI ISHIZUKA , Yuichi Tateishi , Mingyao Xu , Kyosuke Nakano
IPC分类号： F25B9/00
CPC分类号： F25B9/14 , F25B2309/006 , Y10T29/49359
摘要： A regenerative refrigerator includes a compressor compressing working fluid; a cylinder fed with the compressed working fluid, containing a regenerator material, and having an expansion space; and a rotary valve to switch a first passage and a second passage formed to cause the working fluid to flow from the compressor to the expansion space and from the expansion space to the compressor, respectively. The working fluid expands in the expansion space to generate cold temperatures in the cylinder. The rotary valve includes a valve body having a first flat surface; and a valve plate having a second flat surface and configured to rotate with the first and second flat surfaces in surface contact. One of the first and second flat surfaces has an arithmetic average roughness of 0.1 μm to 0.9 μm. The other one of the first and second flat surfaces includes resin.
摘要翻译：再生式冰箱包括压缩工作流体的压缩机; 供给压缩的工作流体的圆筒，包含再生材料，并具有膨胀空间; 以及旋转阀，用于切换第一通道和第二通道，所述第一通道和第二通道分别形成为使得工作流体从压缩机流到膨胀空间以及从膨胀空间流到压缩机。工作流体在膨胀空间中膨胀以在气缸中产生冷的温度。旋转阀包括具有第一平面的阀体; 以及阀板，其具有第二平坦表面并且被构造成与所述第一和第二平坦表面以表面接触的方式旋转。第一和第二平面之一具有0.1μm至0.9μm的算术平均粗糙度。第一和第二平面中的另一个包括树脂。

16. 发明授权

US07654096B2 Reduced torque valve for cryogenic refrigerator 有权
标题翻译：低温冰箱减速扭矩阀
公开(公告)号：US07654096B2
公开(公告)日：2010-02-02
申请号：US10580917
申请日：2005-01-20
申请人： Mingyao Xu , Jin Lin Gao , Eric Seitz , Motokazu Saito
发明人： Mingyao Xu , Jin Lin Gao , Eric Seitz , Motokazu Saito
IPC分类号： F25B9/00 , F16K11/074 , F16K31/02
CPC分类号： F25B9/14 , F16K11/074 , F16K31/041 , F25B9/145 , F25B2309/006 , F25B2309/1408 , F25B2309/14181 , F25B2309/14241 , Y10T137/86863
摘要： A rotary valve unit which reduces the torque required to turn the valve disc, and the amount of wear dust that is blown into the cold head, using differential gas forces to keep the valve disc in contact with the valve seat, and which enables larger diameter valve discs to be utilized for multi-ported pulse tubes that have less force on the face of the valve disc, resulting in reduced torque and reduced wear rate.
摘要翻译：一种旋转阀单元，其减小了转动阀盘所需的扭矩以及吹入冷头中的磨损粉尘的量，使用差分气体力来保持阀盘与阀座接触，并且使得能够更大直径用于多孔脉冲管的阀盘，其在阀盘的表面上具有较小的力，导致减小的转矩和降低的磨损率。

17. 发明授权

US07568351B2 Multi-stage pulse tube with matched temperature profiles 有权
标题翻译：具有匹配温度曲线的多级脉冲管
公开(公告)号：US07568351B2
公开(公告)日：2009-08-04
申请号：US11333760
申请日：2006-01-17
申请人： Mingyao Xu , Jin Lin Gao
发明人： Mingyao Xu , Jin Lin Gao
IPC分类号： F25B9/00
CPC分类号： F25B9/145 , F25B9/10 , F25B2309/1408 , F25B2309/1413 , F25B2309/1418 , F25B2309/1421 , F25B2309/14241 , F25B2400/17 , F25D19/006
摘要： Convection losses associated with different temperature profiles in the pulse tubes and regenerators of multi-stage pulse tubes mounted in helium gas in the neck tube of a MRI cryostat are reduced by providing one or more of thermal bridges, and/or insulating sleeves between one or more pulse tubes and regenerators, and/or spacers, and spacer tubes, in one or more pulse tubes and regenerators.
摘要翻译：通过在MRI低温恒温器的颈管中安装在氦气中的多级脉冲管的脉冲管和再生器中的不同温度曲线相关的对流损耗通过在一个或多个第一或第二组之间提供一个或多个热桥和/或绝缘套管来减少一个或多个脉冲管和再生器中的更多脉冲管和再生器，和/或间隔物和间隔管。

18. 发明授权

US07509814B2 Compact integrated buffer for pulse tube refrigerator 有权
标题翻译：脉冲管冰箱紧凑型集成缓冲器
公开(公告)号：US07509814B2
公开(公告)日：2009-03-31
申请号：US11334034
申请日：2006-01-18
申请人： Mingyao Xu
发明人： Mingyao Xu
IPC分类号： F25B9/00
CPC分类号： F25B9/145 , F25B9/10 , F25B2309/1408 , F25B2309/1418 , F25B2309/14241
摘要： A range of buffer volume/pulse tube volume ratios for two-stage hybrid GM type pulse tube cold-heads that are designed to produce refrigeration at 4 K are provided. The ranges of volume ratios for the first and second stages provides a good balance between the inefficiencies but compact size of a four-valve phase shifting mechanism and the better efficiency but larger size of a double-orifice phase shifting mechanism. The buffer volumes are small enough to be conveniently machined into the warm end housing, or as an option, one can be part of a valve disc housing. The drive motor for the valve disc is in an attached housing to make the valve disc readily accessible for service.
摘要翻译：提供了设计用于在4K下产生制冷的两级混合型GM型脉冲管冷头的缓冲体积/脉冲管体积比的范围。第一级和第二级的体积比的范围在四阀相移机构的低效率紧凑的尺寸和双孔相移机构的更高的效率但更大的尺寸之间提供了良好的平衡。缓冲体积足够小以便被方便地加工到热端壳体中，或者作为选项，可以是阀盘壳体的一部分。用于阀盘的驱动马达在附接的壳体中，以使得阀盘易于使用。

19. 发明授权

US07497084B2 Co-axial multi-stage pulse tube for helium recondensation 有权
标题翻译：用于氦气再凝结的同轴多级脉冲管
公开(公告)号：US07497084B2
公开(公告)日：2009-03-03
申请号：US11274447
申请日：2005-11-15
申请人： Mingyao Xu , Ralph Longsworth
发明人： Mingyao Xu , Ralph Longsworth
IPC分类号： F25B9/00
CPC分类号： F25B9/10 , F25B9/145 , F25B2309/1406 , F25B2309/1408 , F25B2309/1413 , F25B2309/1414 , F25B2309/1415 , F25B2309/1418 , F25B2309/14241 , F25B2309/1425 , F25B2400/17 , F25D19/006
摘要： A two-stage pulse tube refrigerator having a compact design, low vibration and low heat loss is provided where at least the 2nd stage is co-axial but preferably, both stages are co-axial with the second stage pulse tube being central and the first stage pulse tube occupying the annular space between the second stage pulse tube and the first stage regenerator. Convection losses associated with different temperature profiles in the pulse tubes and regenerators are minimized by shifting the thermal patterns in the pulse tubes relative to the regenerators by one or more of spacers in the regenerators, physical differences in length with gas channel connections, adjustment of dc flow, and thermal bridges.
摘要翻译：提供了具有紧凑设计，低振动和低热损失的两级脉冲管制冷器，其中至少第二级是同轴的，但是优选地，两级与第二级脉冲管是同轴的，中心的是第一级占位于第二级脉冲管与第一级再生器之间的环形空间。脉冲管和再生器中与不同温度曲线相关的对流损耗通过在再生器中的一个或多个间隔物相对于再生器移动热脉冲图案，与气体通道连接的长度物理差异，直流调节流动和热桥。

20. 发明申请

US20080256958A1 Pulse tube cryocooler 审中-公开
标题翻译：脉管低温冷冻机
公开(公告)号：US20080256958A1
公开(公告)日：2008-10-23
申请号：US11905432
申请日：2007-10-01
申请人： Mingyao Xu
发明人： Mingyao Xu
IPC分类号： F25B7/00 , F25B9/14
CPC分类号： F25B9/145 , F25B9/10 , F25B2309/1408 , F25B2309/1412 , F25B2309/1413 , F25B2309/1418 , F25B2309/1421 , F25B2309/14241 , F25B2400/17 , F25D19/006
摘要： A pulse tube cryocooler used under a non-vacuum atmosphere, the pulse tube cryocooler includes a pressure wave generator configured to generate pressure wave in an operations gas; a first stage regenerator having a high temperature end connected to the pressure wave generator; a second stage regenerator having a high temperature end connected to the first stage regenerator; a first stage pulse tube having a high temperature end and a low temperature end, the high temperature end being connected to a first buffer tank, the low temperature end being connected to a low temperature end of the first stage regenerator; a second stage pulse tube having a high temperature end and a low temperature end, the high temperature end being connected to a second buffer tank, the low temperature end being connected to a low temperature end of the second stage regenerator; a first stage cooling stage provided in a position where the first stage regenerator and the first stage pulse tube are connected; and a second stage cooling stage provided in a position where the second stage regenerator and the second stage pulse tube are connected.
摘要翻译：在非真空气氛中使用的脉冲管低温冷冻机，脉冲管低温冷却器包括：压力波发生器，其被配置为在操作气体中产生压力波; 具有连接到压力波发生器的高温端的第一级再生器; 第二级再生器，具有连接到第一级再生器的高温端; 具有高温端和低温端的第一级脉冲管，所述高温端连接到第一缓冲罐，所述低温端连接到所述第一级再生器的低温端; 具有高温端和低温端的第二级脉冲管，所述高温端连接到第二缓冲罐，所述低温端连接到所述第二级再生器的低温端; 设置在第一级再生器和第一级脉冲管连接的位置的第一级冷却级; 以及设置在第二级再生器和第二级脉冲管连接的位置的第二级冷却级。

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