公开(公告)号：US20140127059A1

公开(公告)日：2014-05-08

申请号：US14153882

申请日：2014-01-13

申请人： Trane International, Inc.

发明人： Paul F. Haley ,  Dennis R. Dorman ,  Frederic Byron Hamm, JR. ,  David M. Foye ,  James A. Kwiatkowski ,  Rick T. James ,  Randall L. Janssen ,  William J. Plzak

IPC分类号： F04D25/06 ,  F04D17/10

CPC分类号： F04D25/06 ,  F04D17/10 ,  F04D17/122 ,  F04D29/4213 ,  F04D29/441

摘要： A centrifugal compressor assembly for compressing refrigerant in a 250-ton capacity or larger chiller system comprising a motor, preferably a compact, high energy density motor or permanent magnet motor, for driving a shaft at a range of sustained operating speeds under the control of a variable speed drive. Another embodiment of the centrifugal compressor assembly comprises a mixed flow impeller and a vaneless diffuser sized such that a final stage compressor operates with an optimal specific speed range for targeted combinations of head and capacity, while a non-final stage compressor operates above the optimum specific speed of the final stage compressor. Another embodiment of the centrifugal compressor assembly comprises an integrated inlet flow conditioning assembly to condition flow of refrigerant into an impeller to achieve a target approximately constant angle swirl distribution with minimal guide vane turning.

摘要翻译： 一种用于在250吨或更大的冷冻机系统中压缩制冷剂的离心式压缩机组件，其包括电动机，优选紧凑的高能量密度电动机或永磁电动机，用于在持续运行速度的范围内驱动轴， 变速驱动。 离心压缩机组件的另一个实施例包括混合流动叶轮和无叶漫射器，其尺寸使得最终级压缩机以最佳特定速度范围进行操作，用于头部和容积的目标组合，而非最终级压缩机在最佳特定 最终级压缩机的速度。 离心式压缩机组件的另一个实施例包括集成的入口流调节组件，用于调节制冷剂进入叶轮的流量，以实现目标大约恒定角度的涡流分布，同时具有最小的导向叶片转动。