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Flexure Bearing Compressor in the One Watt Linear (OWL) Envelope

机译：一瓦线性（OWL）信封中的挠曲轴承压缩机

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For high performance IR detectors the split linear cooler is a preferred solution. High reliability, low induced vibration and low audible noise are major benefits of such coolers. Today, most linear coolers are qualified for MTTF of 8,000h or above. It is a strong customer desire to further reduce the maintenance costs on system level with significantly higher cooler lifetime. Increased cooler MTTF figures are also needed for IR applications with high lifetime requirements like missile warning applications, border surveillance or homeland security applications. AIM developed a Moving Magnet Flexure Bearing compressor to meet a MTTF of minimum 20,000h. The compressor has a full flexure bearing support on both sides of the driving mechanism. In the assembly process of the compressor an automated alignment process is used to achieve the necessary accuracy. Thus, side-forces on the pistons are minimized during operation, which significantly reduces the wear-out. In order to reduce the outgassing potential most of the internal junctions are welded and the use of all non-metallic components is minimized. The outline dimensions comply with the SADA2 requirements in length and diameter. Further, when operated with a Vi" SADA type coldfmger, the cooler meets all specified performance data for SADA2. The compressor can be combined with different Stirling type coldfingers and also with the AIM Pulse Tube coldfinger, which gives increased lifetime potential up to 50,000h MTTF. Technical details and performance data of the new compressor are shown.
机译：对于高性能红外探测器，分体式线性冷却器是首选解决方案。高可靠性，低振动和低噪音是此类冷却器的主要优点。如今，大多数线性冷却器都符合8,000h或以上的MTTF的要求。客户强烈希望进一步降低系统级的维护成本，同时显着提高冷却器的使用寿命。对于具有高寿命要求的红外应用（例如导弹警告应用，边界监视或国土安全应用），还需要提高凉爽的MTTF数值。 AIM开发了一种动磁挠性轴承压缩机，其MTTF至少为20,000h。压缩机在驱动机构的两侧均具有完全弯曲的轴承支撑。在压缩机的组装过程中，使用自动对准过程来达到必要的精度。因此，在操作过程中最小化了活塞上的侧向力，从而显着降低了磨损。为了减少放气的可能性，大多数内部结被焊接并且所有非金属部件的使用被最小化。外形尺寸符合SADA2的长度和直径要求。此外，当使用Vi“ SADA型冷风机运行时，该冷却器符合SADA2的所有指定性能数据。该压缩机可与不同的斯特林型冷风机以及AIM脉冲管冷指结合使用，使用寿命可能延长到50,000h MTTF。显示了新压缩机的技术细节和性能数据。

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