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公开(公告)号：US5636708A
公开(公告)日：1997-06-10
申请号：US243113
申请日：1994-05-16
IPC分类号： C10M171/00 , F16N7/32 , F16N17/02 , F01M5/00
CPC分类号： F16C33/6662 , C10M171/005 , F16N17/02 , F16N7/32 , F16N2210/02
摘要： Conventional liquid lubrication requires a compromise between high temperature properties for good lubrication and low temperature properties for pumpability. The major thrust of this invention is the preservation of the long life and reliable mechanism of elastohydrodynamic lubrication in the pursuit of elevated temperature lubrication. The mechanism of EHD lubrication is the primary source of lubrication for rolling element bearings, gears and other non-conforming contacting surfaces which must carry high loads over small areas of contact. The invention supplies the lubricant as a vapor which upon condensation provides an efficient replenishment of the inlet region to the elastohydrodynamic contact. The surfaces are encouraged to operate at elevated temperatures without cooling for reasons of efficiency. Broad temperature range EHD lubrication with perfluoroalkylpolyether fluids provide full EHD lubrication up to 500.degree. C. The enhanced temperature range, small fluid quantity and the supply of lubricant in a vapor environment eliminates the need for complex lubrication and cooling hardware. The vapor lubrication scheme when applied to a rolling element bearing provides lubrication to 500.degree. C. The invention provides high speed operation to 0.9 MDn (30,000 rpm with a 30 mm bore bearing) with the use of a driving air to overcome the internal windage generated by the high speed components.
摘要翻译： 传统的液体润滑需要在高温性能之间达到妥协，以获得良好的润滑性和低的泵送性能。 本发明的主要目的是保持弹性流体动力润滑在追求高温润滑方面的长寿命和可靠的机理。 EHD润滑的机理是滚动元件轴承，齿轮和其他不合格接触表面的主要润滑源，必须在小的接触区域承载高负荷。 本发明提供作为蒸气的润滑剂，其在冷凝时向弹性流体动力接触提供有效补充入口区域。 鼓励表面在升高的温度下运行，而不会因为效率而冷却。 宽温度范围EHD润滑与全氟烷基聚醚流体提供高达500℃的全面EHD润滑。在蒸气环境中，增加的温度范围，小的流体量和润滑剂的供应无需复杂的润滑和冷却硬件。 当应用于滚动元件轴承时，蒸气润滑方案提供润滑至500℃。本发明通过使用驱动空气来克服产生的内部风阻，提供0.9 MDn（30,000rpm，30mm内径轴承）的高速操作 由高速组件。
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