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1. 发明申请

WO2006078437A1 MULTI-STAGE CRYOCOOLER WITH CONCENTRIC SECOND STAGE 审中-公开
标题翻译：多阶段CRYOCOOLER CONCENTRIC SECOND STAGE
公开(公告)号：WO2006078437A1
公开(公告)日：2006-07-27
申请号：PCT/US2005/047641
申请日：2005-12-20
申请人： RAYTHEON COMPANY
发明人： KIRKCONNELL, Carl, S. , CICCARELLI, Ken, J. , ALANIZ, Abram
IPC分类号： F25B9/10 , F25B9/14
CPC分类号： F25B9/145 , F25B9/10 , F25B2309/1406 , F25B2309/1408 , F25B2309/1423
摘要： A multi-stage cryocooler (100) includes a concentric second-stage pulse tube expander (130) in which a pulse tube (132) is located within a second-stage regenerator (131). In one embodiment, an inner wall of the regenerator also functions as an outer wall of the pulse tube. In another embodiment, there is an annular gap between an inner wall of the regenerator and an outer wall of the pulse tube. The gap may be maintained at a low pressure, approaching a vacuum, by placing the gap in fluid communication with an environment around the cryocooler, such as the low-pressure environment of space. The integrated second-stage structure, with the pulse tube within the annular regenerator, provides several potential advantages over prior multi-stage cryocooler systems.
摘要翻译：多级低温冷却器（100）包括同心的第二级脉冲管扩管器（130），脉冲管（132）位于第二级再生器（131）内。在一个实施例中，再生器的内壁也用作脉冲管的外壁。在另一个实施例中，在再生器的内壁和脉冲管的外壁之间存在环形间隙。间隙可以通过将间隙与低温空气的低压环境周围的环境流体连通地保持在低压，接近真空。集成的第二级结构，与脉冲管在环形再生器内，提供了优于现有多级低温冷却器系统的几个潜在优势。

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