公开(公告)号：US20050193745A1

公开(公告)日：2005-09-08

申请号：US10708477

申请日：2004-03-05

申请人： Roy Mangano ,  In-Hua Xu ,  Gregory Lehmann ,  Deborah Mantone

发明人： Roy Mangano ,  In-Hua Xu ,  Gregory Lehmann ,  Deborah Mantone

IPC分类号： G01R33/3815 ,  A61B5/055 ,  F17C13/00 ,  F25B9/14 ,  F25B19/00 ,  F25D19/00 ,  F25D21/00 ,  F25D21/06 ,  F25D21/08 ,  G01R33/20 ,  H01F6/04 ,  H05B3/84

CPC分类号： F25D21/08 ,  F25B9/14 ,  F25B2400/17 ,  F25D19/006 ,  G01R33/3815

摘要： A system and method for de-icing a recondensor includes at least one heating element configured to melt iced particles from a recondensing system. A power delivery circuit is included configured to deliver power to the at least one resistive heating element such that the at least one resistive heating element delivers a supply of heat sufficient to melt the iced particles from the recondensing system.

摘要翻译： 一种用于除冰再冷凝器除冰的系统和方法包括至少一个加热元件，其构造成从再冷凝系统熔化冰粒。 功率输送电路被配置成向所述至少一个电阻加热元件输送功率，使得所述至少一个电阻加热元件传递足以使来自所述再冷凝系统熔化所述冰晶颗粒的热量。

公开(公告)号：US20060022779A1

公开(公告)日：2006-02-02

申请号：US10710682

申请日：2004-07-28

申请人： Longzhi Jiang ,  Gregory Lehmann ,  Edwin Legall

发明人： Longzhi Jiang ,  Gregory Lehmann ,  Edwin Legall

IPC分类号： H01F6/00

CPC分类号： H01F6/04 ,  F25B9/14 ,  F25B2400/17 ,  F25D19/006 ,  G01R33/3815

摘要： A zero boiloff cryogen cooled recondensing superconducting magnet assembly including superconducting magnet coils suitable for magnetic resonance imaging including a cryogen pressure vessel to contain a liquid cryogen reservoir to provide cryogenic temperatures to the magnet coils for superconducting operation; a vacuum vessel surrounding the pressure vessel and spaced therefrom; a first thermal shield surrounding and spaced from the pressure vessel; a second thermal shield surrounding and spaced from the first thermal shield and intermediate the vacuum vessel and the first shield; a cryocooler thermally connected by a first and a second thermal interface to the first and second thermal shields, respectively; a recondenser positioned in the space between the pressure vessel and the first thermal shield and thermally connected by a thermal interface to the cryocooler to recondense, back to liquid, cryogen gas provided from the pressure vessel; and means for returning the recondensed liquid cryogen the pressure vessel; wherein the second thermal shield surrounding the first thermal shield reduces a radiation heat load from the first thermal shield to the pressure vessel lowering boiloff of cryogen gas under conditions of failure or power off of the cryocooler.

摘要翻译： 一种零沸腾冷冻再冷凝超导磁体组件，包括适用于磁共振成像的超导磁体线圈，包括冷冻剂压力容器，以容纳液体冷冻剂储存器，以向超导体操作的磁体线圈提供低温; 围绕压力容器并与之隔开的真空容器; 围绕并与压力容器隔开的第一热屏蔽; 围绕第一热屏蔽并与真空容器和第一屏蔽件间隔开的第二热屏蔽; 分别通过第一和第二热界面热连接到第一和第二热屏蔽的低温冷却器; 再冷凝器定位在压力容器和第一热屏蔽之间的空间中，并通过热界面与低温冷却器热连接以重新冷凝，从压力容器提供的液体冷冻剂气体; 以及用于使所述再冷凝液体冷冻剂返回所述压力容器的装置; 其中围绕所述第一热屏蔽的所述第二热屏蔽减少从所述第一热屏蔽到所述压力容器的辐射热负荷，以在所述低温冷却器的故障或断电的条件下降低制冷剂气体的沸腾。

公开(公告)号：US20060266053A1

公开(公告)日：2006-11-30

申请号：US10908752

申请日：2005-05-25

申请人： Longzhi Jiang ,  Gregory Lehmann ,  Neil Clarke

发明人： Longzhi Jiang ,  Gregory Lehmann ,  Neil Clarke

IPC分类号： F25B19/00 ,  F28D1/06 ,  F28F13/00

CPC分类号： H01F6/04 ,  F25B9/10 ,  F25D3/00 ,  F25D19/00 ,  F25D19/006 ,  G01R33/3815

摘要： A thermal shield for a superconducting magnet includes a shield body having an annular shape. The shield body includes a material having a thermal conductivity greater than about 1000 W/m·K at about 70K.

摘要翻译： 用于超导磁体的热屏蔽包括具有环形形状的屏蔽体。 屏蔽体包括在约70K处具有大于约1000W / m.K的热导率的材料。

公开(公告)号：US20050228262A1

公开(公告)日：2005-10-13

申请号：US10708979

申请日：2004-04-05

申请人： Longzhi Jiang ,  Gregory Lehmann ,  Clifford Ginfrida

发明人： Longzhi Jiang ,  Gregory Lehmann ,  Clifford Ginfrida

IPC分类号： A61B5/05 ,  G01R33/3815

CPC分类号： G01R33/3815

摘要： A magnetic resonance imaging magnet assembly is provided. The assembly comprises a outer thermal shield having an operational temperature. The assembly further includes a cold sleeve assembly comprising a plurality of braid elements mounted to a cooler block and a highly thermally conductive block mounted between the cooler block and the outer thermal shield. The highly thermally conductive block is welded to the outer thermal shield and is welded to the cooler block. The highly thermally conductive block has greater thermal conductance than the outer thermal shield.

摘要翻译： 提供磁共振成像磁体组件。 组件包括具有操作温度的外部热屏蔽。 组件还包括冷套筒组件，其包括安装到冷却器块的多个编织元件和安装在冷却器块和外部热屏蔽之间的高导热块。 高导热块被焊接到外部热屏蔽并焊接到冷却器块。 高导热块具有比外部热屏蔽更大的导热性。

公开(公告)号：US20050104701A1

公开(公告)日：2005-05-19

申请号：US10718439

申请日：2003-11-19

申请人： Xianrui Huang ,  Paul Thompson ,  David Ryan ,  Gregory Lehmann ,  Timothy Havens

发明人： Xianrui Huang ,  Paul Thompson ,  David Ryan ,  Gregory Lehmann ,  Timothy Havens

IPC分类号： H01L39/04 ,  G01R33/3815 ,  H01F6/04 ,  H01F5/00

CPC分类号： G01R33/3815 ,  Y10T29/49359

摘要： A low eddy current cryogen circuit for superconducting magnets including at least a first cooling coil made of an electrically conducting material and having at least one electrical isolator incorporated in the first cooling coil. The electrical isolator is located to inhibit induced eddy current loops due to inductive coupling of the first cooling coil with eddy current inducing field sources.

摘要翻译： 一种用于超导磁体的低涡流制冷剂回路，包括至少由导电材料制成的第一冷却盘管，并具有并入第一冷却盘管中的至少一个电气隔离器。 电隔离器位于通过第一冷却线圈与涡流感应场源的感应耦合来抑制感应涡流环路。