公开(公告)号：US07997088B2

公开(公告)日：2011-08-16

申请号：US11719697

申请日：2005-01-13

申请人： Ralph C. Longsworth

发明人： Ralph C. Longsworth

IPC分类号： F25B9/00

CPC分类号： F25B9/145 ,  F16K31/041 ,  F25B9/10 ,  F25B2309/002 ,  F25B2309/006 ,  F25B2309/1408 ,  F25B2309/1411 ,  F25B2309/14181 ,  F25B2309/14241 ,  F25B2309/1427 ,  Y10T137/87032

摘要： The problems of reducing the torque required to turn the valve, eliminating wear dust, and extending the life of the valves in Gifford McMahon (G-M) type multi-port pulse tube refrigerators are solved by using a rotary spool valve having radial clearance to control flow to and from the regenerator, and using face seal ports on the end of the spool to control flow to and from the pulse tubes.

摘要翻译： 通过使用具有径向游隙的旋转滑阀来解决吉福德·麦克马洪（GM）型多口脉冲管式冰箱中降低扭矩所需扭矩，消除磨损灰尘并延长阀门使用寿命的问题，以控制流量 并且使用在线轴端部的面密封端口来控制流入和流出脉冲管的流量。

公开(公告)号：US20080184712A1

公开(公告)日：2008-08-07

申请号：US11721723

申请日：2005-02-08

申请人： Ralph C. Longsworth

发明人： Ralph C. Longsworth

IPC分类号： B01D8/00

CPC分类号： F04B37/085 ,  F25B9/14

摘要： A cryopump cooled by a GM type refrigerator is disclosed in which the cold (second stage) cryopanel(s) are in planes that are pitched parallel to the axis of the expander cylinder; the cold end of the first stage expansion space is close to the point where the expander cylinder enters the vacuum housing that contains the cryopanels; and a drain system removes all the liquid argon and water flowing out through a vent port for two orientations of the cryopump.

摘要翻译： 公开了一种由GM型冰箱冷却的低温泵，其中冷（第二级）冷冻板处于平行于膨胀机气缸轴线的平面内; 第一级膨胀空间的冷端接近膨胀缸进入包含冷冻板的真空壳体的点; 并且排水系统除去通过排气口流出的所有液态氩和水，用于低温泵的两个取向。

公开(公告)号：US07191600B2

公开(公告)日：2007-03-20

申请号：US10500982

申请日：2003-03-05

申请人： Jin Lin Gao ,  Ralph C. Longsworth

发明人： Jin Lin Gao ,  Ralph C. Longsworth

IPC分类号： F25B9/00

CPC分类号： F25B45/00 ,  F25B9/145 ,  F25B2309/006 ,  F25B2309/1408 ,  F25B2309/1411 ,  F25B2309/1418 ,  F25B2309/14181 ,  F25B2309/14241

摘要： This invention provides an improved means of quickly warming a pulse tube (165) by shifting the phase relation of flow to the warm end of the pulse tube relative to flow to the warm end (117) of the pulse tube relative to flow to the warm end of the regenerator (160) using a “four valve” concept and the “active buffer” concept. Several different pulse tube configurations and valve timing relations that are effective at reversing the cycle from the normal mode, which produces cooling at the pulse tube heat station, to a reverse mode that produces heating are disclosed.

摘要翻译： 本发明提供了一种改进的方法，通过相对于流向脉管的暖端（117）的流动将相对于脉冲管的温端的相位关系移动到脉动管（165）来快速加温 使用“四阀”概念和“主动缓冲器”概念的再生器（160）的端部。 公开了几种不同的脉冲管配置和气门正时关系，其有效地将从脉冲管加热站产生冷却的正常模式的循环反向到产生加热的反向模式。

公开(公告)号：US5687574A

公开(公告)日：1997-11-18

申请号：US615131

申请日：1996-03-14

申请人： Ralph C. Longsworth ,  Francis T. Lotz

发明人： Ralph C. Longsworth ,  Francis T. Lotz

IPC分类号： B01D8/00 ,  F04B37/08 ,  F25B9/00 ,  F25B19/02

CPC分类号： F04B37/08 ,  B01D8/00 ,  F25B9/006 ,  Y10S417/901

摘要： A Group I gas cryopumping system includes a compressor throttle cycle refrigerator using mixed refrigerants. Cold refrigerant flows through a cryopumping surface located in a vacuum chamber, whereon vapor freezes. The refrigerant then passes through a heat exchanger in cross flow with refrigerant from the compressor. Refrigerant flow entering and leaving the heat exchanger is in uninsulated lines at substantially room temperature. All exposed cold lines are eliminated. The throttle device and cold cryopumping surface are an integral unit that connects directly to the flow paths of the heat exchanger without intermediate lines. The compressor/aftercooler unit may be located at any convenient distance from the heat exchanger and cryopumping surface, and the heat exchanger is located immediately adjacent to the pumping surface in a separate housing outside the vacuum chamber. The heat exchanger housing may share or be isolated from the vacuum of the vacuum chamber. Selected mixed refrigerants provide a wide range of cooling capacity over narrow, selectable temperature ranges. Thus, in a selected temperature range, gases are selectively collected to the exclusion of other gases. A tray collects liquid water from the cryopump surfaces during defrost.

摘要翻译： 第一组气体低温泵系统包括使用混合制冷剂的压缩机节流循环制冷机。 冷制冷剂流经位于真空室内的低温泵，其中气体冻结。 然后制冷剂与来自压缩机的制冷剂交叉流过热交换器。 进入和离开热交换器的制冷剂流在基本室温的非绝缘管线中。 所有暴露的冷线都被消除。 节流装置和冷冻低温表面是直接连接到没有中间管线的热交换器的流动路径的整体单元。 压缩机/后冷却器单元可以位于距离热交换器和低温泵的表面任何方便的距离处，并且热交换器位于真空室外部的单独壳体中紧邻泵送表面。 热交换器壳体可以与真空室的真空共享或隔离。 选择的混合制冷剂在窄的可选择的温度范围内提供宽范围的冷却能力。 因此，在选定的温度范围内，选择性地收集气体以排除其它气体。 在除霜期间，托盘从低温泵表面收集液态水。

公开(公告)号：US5402648A

公开(公告)日：1995-04-04

申请号：US86164

申请日：1993-07-01

申请人： Ralph C. Longsworth

发明人： Ralph C. Longsworth

IPC分类号： F25B9/00 ,  F25D3/10 ,  F25B19/00

CPC分类号： F25B9/00 ,  F25D3/10 ,  Y10S505/897

摘要： Apparatus and methods for low pressure cooling of superconducting magnets, for example, on a magnetic levitated train, through a separate circulation loop from a sealed, unvented thermal reservoir to provide a lightweight cooling system. In a second embodiment, forced flow cooling is directed to the superconducting magnets and shields through a separate circulation loop from a sealed thermal reservoir to further reduce the weight of the cooling system.

摘要翻译： 超导磁体的低压冷却的设备和方法，例如在磁悬浮列车上，通过从密封的未通风的热容器分离的循环回路提供轻质的冷却系统。 在第二实施例中，强制流冷却通过独立的循环回路引导至超导磁体和屏蔽件，以进一步降低冷却系统的重量。

公开(公告)号：US4223540A

公开(公告)日：1980-09-23

申请号：US17009

申请日：1979-03-02

申请人： Ralph C. Longsworth

发明人： Ralph C. Longsworth

IPC分类号： F17C3/08 ,  F25D3/10 ,  F25J1/00 ,  H01F6/00 ,  F25B19/00

CPC分类号： F17C3/085 ,  F25D3/10 ,  H01F6/00 ,  F17C2203/0687 ,  F17C2221/012 ,  F17C2221/014 ,  F17C2221/017 ,  F17C2270/0509 ,  F25B2400/17 ,  Y02E60/321 ,  Y10S505/894

摘要： A cryostat for maintaining an inventory of a liquefied cryogen including a vacuum jacketed reservoir (Dewar) containing heat shields in the vacuum jacket, the heat shields cooled to different temperatures and a cryogen recondenser cooled by a cryogenic refrigerator. Included in the cryostat is an access passage to place objects in the cryogen and to support the refrigerator, the access passage including means to remove the refrigerator without opening the liquid cryogen to ambient atmosphere.

摘要翻译： 一种低温恒温器，用于维持液化冷冻剂的库存，包括在真空夹套中含有隔热罩的真空夹层储存器（杜瓦），冷却至不同温度的隔热罩和由低温冰箱冷却的冷冻剂再冷凝器。 包括在低温恒温器中的是通道，用于将物体放置在冷冻剂中并支撑冰箱，该进入通道包括在不将液体冷冻剂打开至周围大气的情况下移除冰箱的装置。

公开(公告)号：US4152903A

公开(公告)日：1979-05-08

申请号：US896012

申请日：1978-04-13

申请人： Ralph C. Longsworth

发明人： Ralph C. Longsworth

IPC分类号： F25B9/02 ,  F25J1/00 ,  G05D23/02 ,  F25B41/04

CPC分类号： F25J1/0276 ,  F25B9/02 ,  G05D23/024 ,  F25B2309/022 ,  F25J2290/42

摘要： A demand-flow cryostat wherein a refrigerant is supplied through an elongated heat exchanger disposed in a container and the refrigerant is expanded through a Joule-Thompson expansion orifice at one end of the heat exchanger to provide an inventory of liquid in the container at that end and wherein a valve member for controlling a refrigerant flow through the orifice is located adjacent thereto and is movable relative to the orifice; whereby a throttling movement is effected with a reduction in temperature. The operation of the orifice and valve member characterized in that each is affixed to separate mounting means, each of which mounting means is associated with a separate control element composed of different materials whose mean cryogenic linear coefficients of expansion differ by at least about 1.times.10.sup.-5 (.degree. K.sup.-1).

摘要翻译： {PG，1 A需求流量低温恒温器，其中通过布置在容器中的细长热交换器供应制冷剂，并且制冷剂在热交换器的一端通过焦耳汤普森膨胀孔膨胀，以提供在 并且其中用于控制通过所述孔口的制冷剂流动的阀构件位于其附近并且可相对于所述孔口移动; 从而通过降低温度来实现节流运动。 孔和阀构件的操作特征在于每个固定到单独的安装装置，每个安装装置与安装装置相关联的单独的控制元件由不同的材料组成，其平均低温线性膨胀系数相差至少约1 {33 10 {hu {31 5 {l（{20 {0 K {HU {31 1 {L））。

公开(公告)号：US07305835B2

公开(公告)日：2007-12-11

申请号：US10500786

申请日：2003-01-08

申请人： Ralph C. Longsworth

发明人： Ralph C. Longsworth

IPC分类号： F25B9/00

CPC分类号： F25B9/145 ,  F25B9/10 ,  F25B2309/1407 ,  F25B2309/1411 ,  F25B2309/1412 ,  F25B2309/1418 ,  F25B2309/14241

摘要： The present invention applies to single or two stage pulse tube refrigerators that have one or more passive orifices at the hot end(s) of the pulse tube(s) through which gas flows to achieve phase shifting and the phase shifting gas flow circulates to a remote heat sink by adding check valves and an appropriate piping circuit.

摘要翻译： 本发明适用于在脉冲管的热端具有一个或多个无源孔的单级或两级脉冲管制冷器，气体通过该端口流动以实现相移，并且相移气流循环到 通过添加止回阀和适当的管道电路进行远程散热。

公开(公告)号：US06488120B1

公开(公告)日：2002-12-03

申请号：US09662535

申请日：2000-09-15

申请人： Ralph C. Longsworth

发明人： Ralph C. Longsworth

IPC分类号： F01M100

CPC分类号： F04B39/16 ,  F04B39/04 ,  F25B9/14 ,  F25B31/004 ,  F25B43/003 ,  F25B43/02

摘要： In an oil-lubricated helium compressor unit, the adsorber can retain all of the oil that might be transferred from the compressor to the adsorber before the system shuts down. No oil is ever transferred or transferable to, for example, the expander in a GM type refrigeration system connected to the unit. The compressor itself will shut down because of a protective switch or seize for lack of oil before any oil carries outside the compressor unit. The unit and the connected refrigeration system can run for more than a selected design life before the compressor shuts down because the limit of oil in the adsorber has been reached. The adsorber can retain as much oil as might leave the compressor over the life of the system plus a safety margin of at least 25%. The adsorber need not be serviced or replaced for the life of the system.

摘要翻译： 在油润滑的氦压缩机单元中，吸收器可以在系统关闭之前保留可能从压缩机传递到吸附器的所有油。 没有油被转移或转移到例如连接到该单元的GM型制冷系统中的膨胀器。 压缩机本身将由于保护开关而关闭，或者在任何油携带在压缩机单元外部时因为缺油而被卡住。 在压缩机关闭之前，单元和连接的制冷系统可以运行超过选定的设计寿命，因为已经达到吸附器中的油的极限。 吸附器可以保留尽可能多的油，这可能会使压缩机在系统寿命内加上至少25％的安全裕度。 在系统的使用寿命内，吸附器不需要维修或更换。

公开(公告)号：US5628195A

公开(公告)日：1997-05-13

申请号：US396528

申请日：1995-03-01

申请人： Dennis Hill ,  Ralph C. Longsworth

发明人： Dennis Hill ,  Ralph C. Longsworth

IPC分类号： G01R33/035 ,  F17C13/00 ,  F25B9/00 ,  F25D19/00 ,  G01J5/06 ,  F25B19/00

CPC分类号： F17C13/006 ,  F25D19/006 ,  G01J5/061 ,  F17C2223/0161 ,  F17C2227/0337

摘要： A cryogenic cold head in a canister is partially surrounded by an isolation mass. An open portion of the mass permits access for connection of a vapor compression refrigeration unit to the cold head, which is highly conductive. Straps of braided copper suspend the isolation mass from the cold head. The isolation mass and straps have a fundamental frequency that is below the first harmonic frequency at the cold head as caused by the refrigeration unit. A temperature differential between the cold head and a device-mounting interface on the isolation mass is preferably less than 2.5K per watt of heat transferred. The device to be cooled is mounted directly to the isolation mass when the mass of the device is insignificant relative to the isolation mass. For further vibration isolation, the device is separated from the isolation mass by another braided strap. By mounting the isolation mass using a plurality of generally opposed braided straps, any orientation of the cold head/isolation mass combination may be used without jeopardizing performance.

摘要翻译： 罐中的低温冷头被隔离块部分地包围。 质量的开放部分允许进入用于将蒸气压缩制冷单元连接到高度导电的冷头。 编织铜带将隔离块悬挂在冷头上。 隔离质量和带子具有低于制冷单元引起的冷头处的一次谐波频率的基频。 冷头和隔离物质上的装置安装界面之间的温差优选小于2.5K /瓦特传热。 当装置的质量相对于隔离质量不显着时，要冷却的装置直接安装在隔离块上。 为了进一步的隔振，设备通过另一个编织带与隔离块分离。 通过使用多个大致相对的编织带安装隔离块，可以使用冷头/隔离块组合的任何取向而不损害性能。