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公开(公告)号：US06279340B1
公开(公告)日：2001-08-28
申请号：US09578622
申请日：2000-05-25
IPC分类号： F25B4302
CPC分类号： F04D29/063 , F04D25/06 , F04D29/023 , F04D29/059 , F04D29/5806 , F05D2300/20 , F05D2300/2283 , F05D2300/501 , F05D2300/5021 , F05D2300/522 , F16C33/6659 , F16C33/6692 , F16C2360/44 , F16C2380/26 , F25B31/002 , F25B31/006 , F25B31/008 , F25B49/025 , H02K7/083 , H02K9/20 , Y10S62/02
摘要： A refrigeration chiller employs a centrifugal compressor the impellers of which are mounted on a shaft which is itself mounted for rotation using rolling element bearings lubricated only by the refrigerant which constitutes the working fluid of the chiller system. Apparatus is taught for providing liquid refrigerant to (1.) the bearings immediately upon chiller start-up, during chiller operation and during a coastdown period subsequent to shutdown of the chiller and (2.) the drive motor of the chiller's compressor for motor cooling purposes. By use of a variable speed-driven motor to drive the compressor, optimized part load chiller performance is achieved in a chiller which does not require or employ an oil-based lubrication system.
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公开(公告)号：US06176092B1
公开(公告)日：2001-01-23
申请号：US09169343
申请日：1998-10-09
IPC分类号： F25B4302
CPC分类号： F04D29/063 , F04D25/06 , F04D29/023 , F04D29/059 , F04D29/5806 , F05D2300/20 , F05D2300/2283 , F05D2300/501 , F05D2300/5021 , F05D2300/522 , F16C33/6659 , F16C33/6692 , F16C2360/44 , F16C2380/26 , F25B31/002 , F25B31/006 , F25B31/008 , F25B49/025 , H02K7/083 , H02K9/20 , Y10S62/02
摘要： A refrigeration chiller employs a centrifugal compressor the impellers of which are mounted on a shaft which is itself mounted for rotation using rolling element bearings lubricated only by the refrigerant which constitutes the working fluid of the chiller system. Apparatus is taught for providing liquid refrigerant to (1.) the bearings immediately upon chiller start-up, during chiller operation and during a coastdown period subsequent to shutdown of the chiller and (2.) the drive motor of the chiller's compressor for motor cooling purposes. By use of a variable speed-driven motor to drive the compressor, optimized part load chiller performance is achieved in a chiller which does not require or employ an oil-based lubrication system.
摘要翻译： 制冷冷冻机采用离心式压缩机，其叶轮安装在轴上，该轴本身通过仅由构成冷却器系统的工作流体的制冷剂润滑的滚动元件轴承进行旋转。 教学设备用于在冷水机启动期间，冷水机组运行期间和冷却器停机后的滑行期间（1）提供液体制冷剂到（1）轴承;（2）制冷机用于电机冷却的压缩机的驱动电机 目的 通过使用变速驱动电机来驱动压缩机，在不需要或使用油基润滑系统的冷却器中实现优化的部件负载冷却器性能。
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公开(公告)号：US06564560B2
公开(公告)日：2003-05-20
申请号：US09903168
申请日：2001-07-11
IPC分类号： F25B3100
CPC分类号： F04D29/063 , F04D25/06 , F04D29/023 , F04D29/059 , F04D29/5806 , F05D2300/20 , F05D2300/2283 , F05D2300/501 , F05D2300/5021 , F05D2300/522 , F16C33/6659 , F16C33/6692 , F16C2360/44 , F16C2380/26 , F25B31/002 , F25B31/006 , F25B31/008 , F25B49/025 , H02K7/083 , H02K9/20 , Y10S62/02
摘要： A refrigeration chiller employs a centrifugal compressor the impellers of which are mounted on a shaft which is itself mounted for rotation using rolling element bearings lubricated only by the refrigerant which constitutes the working fluid of the chiller system. Apparatus is taught for providing liquid refrigerant to (1.) the bearings immediately upon chiller start-up, during chiller operation and during a coastdown period subsequent to shutdown of the chiller and (2.) the drive motor of the chiller's compressor for motor cooling purposes. By use of a variable speed-driven motor to drive the compressor, optimized part load chiller performance is achieved in a chiller which does not require or employ an oil-based lubrication system.
摘要翻译： 制冷冷冻机采用离心式压缩机，其叶轮安装在轴上，该轴本身通过仅由构成冷却器系统的工作流体的制冷剂润滑的滚动元件轴承进行旋转。 教学设备用于在冷水机启动期间，冷水机组运行期间和冷却器停机后的滑行期间（1）提供液体制冷剂到（1）轴承;（2）制冷机用于电机冷却的压缩机的驱动电机 目的 通过使用变速驱动电机来驱动压缩机，在不需要或使用油基润滑系统的冷却器中实现优化的部件负载冷却器性能。
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