公开(公告)号：US20100275616A1

公开(公告)日：2010-11-04

申请号：US12743545

申请日：2008-11-05

申请人： Nobuyoshi Saji ,  Toshio Takahashi ,  Seiichiro Yoshinaga ,  Hirohisa Wakisaka

发明人： Nobuyoshi Saji ,  Toshio Takahashi ,  Seiichiro Yoshinaga ,  Hirohisa Wakisaka

IPC分类号： F25B9/00

CPC分类号： F25B9/14 ,  F25B9/06 ,  F25B45/00 ,  F25B2309/1401 ,  F25B2400/16 ,  F25B2500/27 ,  F25B2600/2519 ,  F25J1/005 ,  F25J1/0062 ,  F25J1/0065 ,  F25J1/0248 ,  F25J2245/02 ,  F25J2270/16 ,  F25J2270/912

摘要： A cryogenic refrigerator (10) which generates a cryogenic temperature by compressing and expanding a working gas in a closed loop (11). The cryogenic refrigerator comprises a bypass line (22) allowing a high-pressure portion and a low-pressure portion to communicate with each other, a gas storage tank (24) located midway in the bypass line and having pressure regulation valves (23a, 23b) on the high-pressure side and the low-pressure side, respectively, and a pressure control unit (26) controlling the pressure regulation valves. The pressure control unit (26) controls the pressure regulation valves (23a, 23b) so that the pressure in the gas storage tank (24) is equal to the pressure in the closed loop at room temperature and in a stopped state and so that the pressure in the gas storage tank (24) is between the pressures in the high-pressure portion and in the low-pressure portion and is close to the pressure in the low-pressure portion in an operating state.

摘要翻译： 一种低温冰箱（10），其通过在闭环（11）中压缩和膨胀工作气体而产生低温温度。 低温冷冻机包括允许高压部分和低压部分彼此连通的旁通管线（22），位于旁路管线中间的储气罐（24），并具有压力调节阀（23a，23b ）和控制压力调节阀的压力控制单元（26）分别设置在高压侧和低压侧。 压力控制单元（26）控制压力调节阀（23a，23b），使得气体储存箱（24）中的压力等于在室温和停止状态下的闭环中的压力， 气体储罐（24）中的压力处于高压部分和低压部分的压力之间，并且在操作状态下接近低压部分的压力。

公开(公告)号：US06382910B1

公开(公告)日：2002-05-07

申请号：US09695905

申请日：2000-10-26

申请人： Takashi Kato ,  Katsumi Kawano ,  Toru Shimba ,  Tadao Hiyama ,  Hiroshi Tsuji ,  Seiichiro Yoshinaga ,  Hiroshi Asakura ,  Nobuyoshi Saji ,  Takehiko Ishizawa

发明人： Takashi Kato ,  Katsumi Kawano ,  Toru Shimba ,  Tadao Hiyama ,  Hiroshi Tsuji ,  Seiichiro Yoshinaga ,  Hiroshi Asakura ,  Nobuyoshi Saji ,  Takehiko Ishizawa

IPC分类号： F01D1712

CPC分类号： F01D17/165 ,  Y10S62/91

摘要： An adiabatic expansion apparatus 22 with a built-in turbine impeller 12 adiabatically expands gas at a cryogenic temperature when the impeller rotates. A control device 24 is connected coaxially with the turbine impeller to control the impeller. A variable nozzle mechanism 30 is provided for varying the throat area for the gas at a cryogenic temperature to be introduced into the turbine impeller. The adiabatic expansion apparatus is installed in a vacuum vessel 14, and a control device is disposed outside the vacuum vessel. The variable nozzle mechanism comprises a nozzle component 32 built into the adiabatic expansion apparatus, and a driving component 34 installed outside the vacuum vessel. The nozzle component and the driving component are connected to the turbine impeller with a coaxial, thin cylindrical component 36, and drive the nozzle component when the cylindrical component rotates about the axis Z of the turbine impeller. The actuator and most of components of the nozzle driving mechanism can be installed at normal temperature under atmospheric pressure, the heat input can be suppressed to an extremely minimal level, and the variable nozzle of the expansion turbine can be driven. Thus, according to the invention, helium gas at a cryogenic temperature can be expanded adiabatically at a high adiabatic efficiency.

摘要翻译： 具有内置涡轮叶轮12的绝热膨胀装置22在叶轮旋转时在低温下绝热膨胀气体。 控制装置24与涡轮机叶轮同轴地连接以控制叶轮。 提供可变喷嘴机构30，用于改变在低温下气体的喉部区域，以引入涡轮叶轮。 绝热膨胀装置安装在真空容器14中，控制装置设置在真空容器的外部。 可变喷嘴机构包括内置于绝热膨胀装置中的喷嘴部件32和安装在真空容器外部的驱动部件34。 喷嘴部件和驱动部件通过同轴的薄的圆柱形部件36连接到涡轮机叶轮，并且当圆柱形部件围绕涡轮叶轮的轴线Z旋转时驱动喷嘴部件。 致动器和喷嘴驱动机构的大部分部件可以在大气压下的常温下进行安装，能够将热输入抑制到极小的水平，并且可以驱动膨胀涡轮机的可变喷嘴。 因此，根据本发明，在低温下的氦气可以以绝热的高效绝热膨胀。

公开(公告)号：US5347819A

公开(公告)日：1994-09-20

申请号：US141742

申请日：1993-10-27

申请人： Nobuyoshi Saji ,  Hiroshi Ohya ,  Hiroshi Asakura ,  Shunji Nagai

发明人： Nobuyoshi Saji ,  Hiroshi Ohya ,  Hiroshi Asakura ,  Shunji Nagai

IPC分类号： F17C13/00 ,  F25B9/10 ,  F25J1/00 ,  F25B19/00

CPC分类号： F25B9/10

摘要： Method and apparatus for manufacturing superfluidity helium (He II). The method includes the steps of (a) providing .sup.3 He gas (b) providing liquid .sup.4 He, (c) compressing the .sup.3 He gas to produce compressed .sup.3 He gas, (d) indirectly cooling the compressed .sup.3 He gas with liquid .sup.4 He to produce cryogenic .sup.3 He gas (e) adiabatically expanding the cryogenic .sup.3 He gas to produce cryogenic .sup.3 He gas having a temperature of less than about 1.18.degree. K., preferably less than 1.8.degree. K., and (f) indirectly cooling the liquid .sup.4 He with the cryogenic .sup.3 He gas produced in step (e) to produce superfluidity helium. The apparatus includes a first container for liquid helium and a second container for containing superfluidity helium, and a first line for connecting the first and second containers. A .sup.3 He refrigeration circuit is provided to cool the .sup.4 He in directly with cryogenic .sup.3 He to produce superfluidity helium. The method and apparatus enables superfluidity helium to be produced without the use of a large vacuum pump whose lubricants might contaminate the superfluidity helium. The method and apparatus also allow superfluidity helium at or near standard pressure to be easily produced and maintained.

摘要翻译： 制造超流氦的方法和装置（氦II）。 该方法包括以下步骤：（a）提供提供液体4He的3He气体（b），（c）压缩3He气体以产生压缩的3He气体，（d）用液体4He间接冷却压缩的3He气体以产生低温3He气体 e）绝热膨胀低温3He气体以产生温度低于约1.18°K，优选小于1.8°K的低温3He气体，和（f）间接地用步骤中产生的低温3He气体冷却液体4He （e）产生超流氦。 该装置包括用于液氦的第一容器和用于容纳超流氦的第二容器和用于连接第一和第二容器的第一管线。 提供3He制冷回路以直接用低温3He冷却4He以产生超流氦。 该方法和装置使得能够生产超流氦，而不需要使用其润滑剂可能污染超流氦的大型真空泵。 该方法和装置还允许容易地产生和维持在标准压力附近或接近标准压力的超流氦。