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1. 发明授权

US4924675A Linear motor compresser with stationary piston 失效
标题翻译：带静止活塞的直线电机压缩机
公开(公告)号：US4924675A
公开(公告)日：1990-05-15
申请号：US371510
申请日：1989-06-26
申请人： Graham J. Higham , Gerald R. Pruitt , Ronald Morris , Frank Heger , James Livingstone , David Tormey
发明人： Graham J. Higham , Gerald R. Pruitt , Ronald Morris , Frank Heger , James Livingstone , David Tormey
IPC分类号： F04B35/04 , F16F7/116 , F25B9/14 , H02K33/06
CPC分类号： F25B9/14 , F04B35/045 , F16F7/116 , H02K33/06 , F25B2309/001 , F25B2500/13
摘要： A linear motor compressor within a cryogenic refrigerator wherein the compressor space, within which a gaseous fluid is alternately compressed and expanded, is formed by a stationary piston and a reciprocating armature that is concentric about the piston. The armature is supported along a clearance seal the stationary piston. An axial bore along the stationary piston conveys gaseous fluid from the compression space to a displacer within the cold finger of the cryogenic refrigerator. An isolator for reducing transimission into and out of the compressor comprising a dynamic absorber and flat springs mounted with a damping material between the compressor and a mounting frame. A sensor for detecting the position of the armature utilizes a target magnet whose magnetic flux lines are decoupled from the flux lines generated about the coil.
摘要翻译：低温冷冻机内的线性电动机压缩机，其中气态流体交替压缩和膨胀的压缩机空间由静止活塞和与活塞同心的往复式电枢形成。电枢沿静止活塞的间隙密封支撑。沿着固定活塞的轴向孔将气态流体从压缩空间传递到低温冰箱的冷指状物内的置换器。用于减少进入和离开压缩机的隔离器包括动态吸收器和在压缩机和安装框架之间安装有阻尼材料的扁平弹簧。用于检测电枢位置的传感器利用目标磁体，其磁通线与绕线圈产生的磁通线分离。

2. 发明授权

US4819439A Linear drive motor with improved dynamic absorber 失效
标题翻译：带动力吸收器的直线驱动电机
公开(公告)号：US4819439A
公开(公告)日：1989-04-11
申请号：US106630
申请日：1987-10-08
申请人： Graham J. Higham
发明人： Graham J. Higham
IPC分类号： F04B35/04 , F16F1/02 , F16F7/116 , F25B9/14 , F25B9/00
CPC分类号： F16F1/028 , F04B35/045 , F16F7/116 , F25B9/14 , F25B2309/001 , F25B2500/13
摘要： A linear drive motor of cryogenic refrigerator in which a reciprocating armature alternately compresses and expands a gaseous fluid in a thermodynamic cycle. An isolator system comprising a countermass, having an antiphase movement with respect to the armature is centrally mounted on unitary springs. Isolator springs are mounted between the compressor and the compressor housing such that vibrations in to and out of the system are attenuated.
摘要翻译：一种低温冰箱的线性驱动电动机，其中往复式电枢在热力循环中交替地压缩和膨胀气态流体。包括具有相对于电枢的反相运动的反质量的隔离器系统集中安装在单一弹簧上。隔离器弹簧安装在压缩机和压缩机壳体之间，使得进出系统的振动被衰减。

3. 发明授权

US4761960A Cryogenic refrigeration system having an involute laminated stator for its linear drive motor 失效
标题翻译：低温制冷系统具有用于其线性驱动电动机的渐开线层压定子
公开(公告)号：US4761960A
公开(公告)日：1988-08-09
申请号：US885218
申请日：1986-07-14
申请人： Graham J. Higham , Howard D. Snively , Harry G. Nicoll , Gerald R. Pruitt
发明人： Graham J. Higham , Howard D. Snively , Harry G. Nicoll , Gerald R. Pruitt
IPC分类号： F25B9/00 , F02G1/044 , F25B9/14 , H02K33/06
CPC分类号： F25B9/14 , F02G1/0445 , H02K33/06 , F02G2250/18 , F02G2258/10 , F25B2309/001
摘要： In a cryogenic split Stirling refrigerator, the compressor is driven by linear drive motors. Each linear drive motor has an armature hermetically sealed by a housing 20. Surrounding the housing is a stator formed from two bodies each housing a drive coil 48 and 49. Each body consists of two components 52-55 formed from involute laminations which have been aligned after the coil has been inserted. Separating the bodies is a magnet 56.
摘要翻译：在低温分体斯特林冰箱中，压缩机由线性驱动电机驱动。每个线性驱动电动机具有由壳体20密封密封的电枢。围绕壳体的定子是由两个主体构成的定子，每个壳体均容纳驱动线圈48和49.每个主体由已经对准的渐开线叠层形成的两个部件52-55组成线圈插入后。身体分离是磁铁56。

4. 发明授权

US5018357A Temperature control system for a cryogenic refrigeration 失效
标题翻译：用于低温制冷的温度控制系统
公开(公告)号：US5018357A
公开(公告)日：1991-05-28
申请号：US488418
申请日：1990-03-01
申请人： James Livingstone , Graham J. Higham , Gerald R. Pruitt
发明人： James Livingstone , Graham J. Higham , Gerald R. Pruitt
IPC分类号： F25B9/14 , G05D23/20
CPC分类号： F25B9/14 , G05D23/1906 , G05D23/20 , F25B2309/001 , F25B2500/13
摘要： In a cryogenic refrigeration utilizing a linear drive motor, a temperature control system controls the displacement of an armature reciprocating at a fixed frequency to adjust the operating temperature of a working fluid at the cold end of a cold finger. Linear drive motors using dynamic absorbers to reduce vibration operate within the narrow frequency range to which the absorber is tuned. Controlling the maximum displacement of the armature used to compress the working fluid results in the ability to adjust the temperature at the cold end of the refrigeration without altering the frequency of operation.
摘要翻译：在利用线性驱动电机的低温制冷中，温度控制系统控制电枢以固定频率往复运动的位移，以调节冷手指冷端处的工作流体的工作温度。使用动态吸收器减少振动的线性驱动电机在吸收器调谐到的窄频范围内工作。控制用于压缩工作流体的电枢的最大位移导致在不改变操作频率的情况下调节冷端冷端的温度的能力。

5. 发明授权

US4860543A Vibration isolation system for a linear reciprocating machine 失效
标题翻译：线性往复机的隔振系统
公开(公告)号：US4860543A
公开(公告)日：1989-08-29
申请号：US239436
申请日：1988-09-01
申请人： Graham J. Higham , Ronald N. Morris , Gerald R. Pruitt
发明人： Graham J. Higham , Ronald N. Morris , Gerald R. Pruitt
IPC分类号： F16F7/108 , F16F7/116 , F16F15/08 , F25B9/14
CPC分类号： F25B9/14 , F16F15/08 , F16F7/116 , F16F2224/005 , F25B2309/001 , F25B2500/13 , Y10S417/901
摘要： A two mass vibration isolator particularly suited to a linear reciprocating machine. Vibration into and out of the machine is attenuated by an isolator placed between the machine and its mounting frame. The isolator is an elastomer with a damping ratio of at least 0.1 sandwiched between two retainers.
摘要翻译：一种特别适用于直线往复机器的两质量隔振器。通过放置在机器和其安装框架之间的隔离器来衰减进出机器的振动。隔离器是阻尼比至少为0.1的弹性体，夹在两个保持器之间。

6. 发明授权

US4783968A Vibration isolation system for a linear reciprocating machine 失效
标题翻译：线性往复机的隔振系统
公开(公告)号：US4783968A
公开(公告)日：1988-11-15
申请号：US894777
申请日：1986-08-08
申请人： Graham J. Higham , Ronald N. Morris , Gerald R. Pruitt
发明人： Graham J. Higham , Ronald N. Morris , Gerald R. Pruitt
IPC分类号： F04B39/00 , F04B35/01 , F16F7/108 , F16F7/116 , F16F15/02 , F16F15/08 , F25B9/14 , F25B9/00
CPC分类号： F16F7/116 , F16F15/08 , F25B9/14 , F16F2224/005 , F25B2309/001 , F25B2500/13
摘要： A two mass vibration isolator particularly suited to a linear reciprocating machine. Vibration into and out of the machine is attenuated by an isolator placed between the machine and its mounting frame. The isolator is an elastomer with a damping ratio of at least 0.1 sandwiched between two retainers.
摘要翻译：一种特别适用于直线往复机器的两质量隔振器。通过放置在机器和其安装框架之间的隔离器来衰减进出机器的振动。隔离器是阻尼比至少为0.1的弹性体，夹在两个保持器之间。

7. 发明授权

US5040372A Linear drive motor with flexure bearing support 失效
标题翻译：带有挠性轴承支持的直线驱动电机
公开(公告)号：US5040372A
公开(公告)日：1991-08-20
申请号：US487945
申请日：1990-04-06
申请人： Graham J. Higham
发明人： Graham J. Higham
IPC分类号： F16F7/116 , F25B9/14 , H02K33/00 , H02K33/06
CPC分类号： H02K33/00 , F16F7/116 , F25B9/14 , H02K33/06 , F25B2309/001
摘要： A linear drive motor of a cryogenic refrigerator, where a reciprocating armature (10) which alternately compresses and expands a gaseous fluid in a thermodynamic cycle, is supported at both ends by flexure supports (110, 130). The armature has a clearance seal (150) with a stationary piston (11) attached at one end to the armature housing by a flexible stem (11B) to minimize cross-bearing loads between the armature and the stationary piston along the clearance seal.
摘要翻译：低温冷冻机的线性驱动马达，其中在热力学循环中交替地压缩和膨胀气态流体的往复式衔铁（10）通过弯曲支撑件（110,130）在两端被支撑。电枢具有间隙密封件（150），其中固定的活塞（11）通过柔性杆（11B）的一端连接到电枢壳体，以使电枢和静止活塞之间沿着间隙密封的交叉轴承负载最小化。

8. 发明授权

US5357760A Hybrid cryogenic vacuum pump apparatus and method of operation 失效
标题翻译：混合式低温真空泵装置及其操作方法
公开(公告)号：US5357760A
公开(公告)日：1994-10-25
申请号：US95956
申请日：1993-07-22
申请人： Graham J. Higham
发明人： Graham J. Higham
IPC分类号： F04B37/08 , B01D8/00
CPC分类号： F04B37/08 , Y10S417/901
摘要： Apparatus for vacuum pumping an enclosed chamber without the use of activated charcoal to remove hydrogen by cryosorption. As a result, the potential for contamination by a sorbent material is eliminated. The pumping structure includes an integral two-stage vacuum pump. The first-stage pump is a cryogenic pump having a pump chamber and cryoarrays mounted on an expander for cryocondensation of the principal gases present in the vacuum chamber. The second-stage pump operates at room temperatures and includes one or more getter pumps whose principal function is to remove hydrogen molecules that may be present in the vacuum chamber after the first-stage cryopump has removed most of the cryocondensable gases from the vacuum chamber. In one aspect of the invention, the first-stage pump is separated from the second-stage pump by a gate valve to protect the getter pumps during the regeneration flushing of nitrogen through the first-stage cryogenic pump chamber. In another aspect of the invention, a technique is disclosed to eliminate the need for a gate valve separating the two pumps. In another aspect of the invention, an ion pump is added to the two-stage vacuum pump to reduce the helium and neon molecules that may be present after the pumping of hydrogen and the other cryocondensable gases in the vacuum chamber.
摘要翻译：用于真空泵送封闭室而不使用活性炭以通过冷冻吸附除去氢的装置。结果，消除了吸附剂材料污染的可能性。泵送结构包括一体式两级真空泵。第一级泵是具有泵室的低温泵和安装在膨胀机上的冷凝器，用于冷凝存在于真空室中的主要气体。第二级泵在室温下工作，并且包括一个或多个吸气泵，其主要功能是在第一级低温泵从真空室中除去大部分低温可冷凝气体之后，去除可能存在于真空室中的氢分子。在本发明的一个方面，第一级泵通过闸阀与第二级泵分离，以在通过第一级低温泵室再生冲洗氮气期间保护吸气泵。在本发明的另一方面，公开了一种消除对分离两个泵的闸阀的需要的技术。在本发明的另一方面，离子泵被添加到两级真空泵中以减少在真空室中泵送氢气和其它低温可冷冻气体之后可能存在的氦和氖分子。

9. 发明授权

US5305612A Cryopump method and apparatus 失效
标题翻译：冷冻方法和装置
公开(公告)号：US5305612A
公开(公告)日：1994-04-26
申请号：US988708
申请日：1992-12-10
申请人： Graham J. Higham , Craig Perkins
发明人： Graham J. Higham , Craig Perkins
IPC分类号： F04B37/08 , B01D8/00
CPC分类号： F04B37/08
摘要： Cryopump apparatus and method for controlling the operating temperature of a cryoarray in a cryopump. The cryopump has means for thermally isolating one of more of the cryoarrays from the refrigeration source. The means for thermally isolating is a thermal switch formed from at least first and second switch elements made of materials having dissimilar coefficients of thermal expansion. The thermal switch is also used in isolating one of the pump's cryoarrays during a partial regeneration process. The thermal switch of the preferred embodiment may also be used to prevent one of the pump's cryoarrays from falling below a predetermined operating temperature.
摘要翻译：冷冻设备和控制低温泵中低温阵列工作温度的方法。低温泵具有用于将多个冷冻阵列中的一个与制冷源热隔离的装置。用于隔热的装置是由至少由具有不同热膨胀系数的材料制成的第一和第二开关元件形成的热开关。在部分再生过程中，热开关还用于隔离泵的低温阵列。优选实施例的热开关还可用于防止泵的冷冻套管中的一个下降到预定工作温度以下。

10. 发明授权

US4798054A Linear drive motor with flexure bearing support 失效
标题翻译：带有挠性轴承支持的直线驱动电机
公开(公告)号：US4798054A
公开(公告)日：1989-01-17
申请号：US106428
申请日：1987-10-08
申请人： Graham J. Higham
发明人： Graham J. Higham
IPC分类号： F25B9/14 , H02K33/12 , F25B9/00
CPC分类号： F25B9/14 , H02K33/12 , F25B2309/001
摘要： A linear drive motor of a cryogenic refrigerator, where a reciprocating armature which alternately compresses and expands a gaseous fluid in a thermodynamic cycle, is supported at both ends by flexure supports. The armature has a clearance seal with a stationary piston attached at one end to the armature housing by a flexible stem to minimize cross-bearing loads between the armature and the stationary piston along the clearance seal.
摘要翻译：低温冷冻机的线性驱动马达，其中在热力循环中交替地压缩和膨胀气态流体的往复式衔铁通过弯曲支撑件支撑在两端。电枢具有间隙密封，固定活塞通过柔性杆在一端连接到电枢壳体上，以最小化沿着间隙密封件的电枢和静止活塞之间的交叉轴承负载。

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