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发明公开
CN105051466A 压缩机轴承冷却 有权

压缩机轴承冷却
摘要：
压缩机(22)具有壳体组件(40)，该壳体组件(40)具有吸入端口(24)、排出端口(26)和马达隔室(60)。电动马达(42)具有在该马达隔室内的定子(62)和在该定子内的转子(64)。该转子安装成用于围绕转子轴线(500)旋转。一个或更多个工作叶轮(44)联接至该转子，以在至少第一条件下由该转子驱动，以便穿过该吸入端口取入流体且从该排出端口排出该流体。入口导向叶片(IGV)阵列(174)在该吸入端口(24)与该一个或更多个叶轮(44)之间。一个或更多个轴承系统(66、68)支撑该转子(64)和/或一个或更多个叶轮(44)。一个或更多个主排泄通道(120、234、206；120、232、202、206)联接至该轴承，以将流体沿排泄流路从该轴承传递至在该叶轮上游和该IGV阵列下游的位置(172)。
摘要（英）：

A compressor (22) has a housing assembly (40) with a suction port (24), a discharge port (26), and a motor compartment (60). An electric motor (42) has a stator (62) within the motor compartment and a rotor (64) within the stator. The rotor is mounted for rotation about a rotor axis (500). One or more working impellers (44) are coupled to the rotor to be driven by the rotor in at least a first condition so as to draw fluid in through the suction port and discharge the fluid from the discharge port. An inlet guide vane (IGV) array (174) is between the suction port (24) and the one or more impellers (44). One or more bearing systems (66, 68) support the rotor (64) and/or the one or more impellers (44). One or more main drain passages (120,234 206; 120, 232, 202, 206) are coupled to the bearings to pass fluid along a drain flowpath from the bearings to a location (172) upstream of the impeller and downstream of the IGV array.

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