基本信息:
- 专利标题： Coaxial multistage pulse tube for helium recondensation
- 专利标题（中）：同轴多重脉冲管用于HELIUM RECONDENSATION
- 申请号：JP2005368581 申请日：2005-12-21
- 公开(公告)号：JP2006189245A 公开(公告)日：2006-07-20
- 发明人： XU MINGYAO , LONGSWORTH RALPH
- 申请人： Sumitomo Heavy Ind Ltd , 住友重機械工業株式会社
- 专利权人： Sumitomo Heavy Ind Ltd,住友重機械工業株式会社
- 当前专利权人： Sumitomo Heavy Ind Ltd,住友重機械工業株式会社
- 优先权： US64119905 2005-01-04
- 主分类号： F25B9/00
- IPC分类号： F25B9/00
摘要：
PROBLEM TO BE SOLVED: To provide a design for reducing vibration transmitted to an MRI low-temperature tank by an expander. SOLUTION: A two-stage pulse tube refrigerator having a compact design, low vibration and low thermal loss is provided; and, in this case, it is preferable both the stages are coaxial with each other in the state where at least the second stage is coaxial, the second-stage pulse tube is located at the center, the first-stage pulse tube occupies an annular space between the second-stage pulse tube and a first-stage regenerator. Convective loss related to different temperature profiles in the pulse tubes and the regenerators is minimized by shifting thermal patterns in the pulse tubes with respect to the regenerators by one or more spacers in the regenerators, the difference of physical length from gas passage connection, adjustment of a direct current flow and a heat escape path. COPYRIGHT: (C)2006,JPO&NCIPI
摘要（中）：
要解决的问题：提供一种用于减小通过膨胀机传递到MRI低温罐的振动的设计。
解决方案：提供具有紧凑设计，低振动和低热损失的两级脉冲管制冷器。 在这种情况下，优选在至少第二级同轴的状态下，两级相互同轴，第二级脉冲管位于中心，第一级脉管占据环状 第二级脉冲管与第一级再生器之间的空间。 通过在再生器中通过一个或多个间隔物相对于再生器移动热脉冲图案，脉冲管和再生器中的不同温度分布的对流损耗最小化，物理长度与气体通过连接的差异 直流电流和热逸散路径。 版权所有（C）2006，JPO＆NCIPI
公开/授权文献:
- JP4617251B2 Coaxial multi-stage pulse tube for helium re-condensing 公开/授权日：2011-01-19