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——不幸的是,至今闭循环制冷器无论是对使用者还是对制造者来说,仍然是红外系统中的薄弱环节。当使用这种制冷器时,它最多只能连续工作几百小时,所以红外系统的性能不得不因它而减低了。本文着重讨论斯特林循环制冷器工艺方面的技术进展,这将逐渐使军用制冷器的面貌为之一新。这里重点讨论最新研制出来的一系列平均无维修故障时间长的分置闭循环制冷器。阐述这些制冷器在技术上的演变,其中包括美国研制的平均无维修故障时间长达几年的卫星系统用斯特林制冷器以及荷兰研制的UA7011制冷器 (首批一次性、军用制冷器)。还讨论三台新型制冷机。检验其中两台平均无维修故障时间至少有2500小时,标准制冷量在80K温度下为1/4瓦和1瓦的线谐振自由排出器斯特林制冷机。第三台制冷机是经过改进的,制冷量在80K温度下为1/4瓦的最新斯特林机,它的自由排出器是经改进了的,但压缩器仍利用曲轴驱动。所有三台制冷机都可配装美国标准的60元和120/180元探测器/杜瓦瓶。文中详尽地讨论了上述制冷器中的线谐振压缩机和自由排出器膨胀器的技术,以使读者清楚了解它们的优越性能。
Unfortunately, to date, closed-loop coolers are still the weakest link in infrared systems for both users and manufacturers. When using this type of cooler, it can only work continuously for hundreds of hours, so the performance of the infrared system has to be reduced because of it. This article focuses on the technological advances in the Stirling cycle refrigeration process, which will gradually make the face of military refrigerators one of the new. Here focused on the latest development of a series of average maintenance-free fault long time fracturing closed loop cooler. Describe the technological evolution of these chillers, including the U.S.-developed Stirling chiller for satellite systems with an average maintenance-free failure time of several years and the UA7011 chiller developed by the Netherlands (the first one-time, military chiller) . Three new refrigerators are also discussed. Two of them were tested for an average of at least 2,500 hours without maintenance downtime and a standard Stirling freezer with a linear resonance free exciter at 1/4 watt and 1 watt at 80K. The third refrigerator is the newest Stirling machine with an improved cooling capacity of 1/4 watt at 80K and its free ejector has been improved but the compressor still uses crankshaft drive. All three refrigerators can be equipped with US standard 60 yuan and 120/180 yuan detector / Dewar bottle. This article discusses in detail the above-mentioned line-resonance compressors in refrigerators and free ejector expanders to give readers a clear understanding of their superior performance.