公开(公告)号：EP2257710A4

公开(公告)日：2013-08-07

申请号：EP09718698

申请日：2009-03-13

申请人： AAF MCQUAY INC

发明人： DOTY MARK C ,  CAMPAIGNE EARL A ,  WATSON THOMAS E ,  BUTLER PAUL K ,  CLINE QUENTIN E ,  SHOWALTER SAMUEL J

IPC分类号： F04D29/42 ,  F04B17/00 ,  F04B39/06 ,  F04B49/00 ,  F04D29/28 ,  F04D29/58 ,  F25B1/00 ,  F25B1/053 ,  F25B31/00

CPC分类号： F25B1/00 ,  F04D29/284 ,  F04D29/5846 ,  F25B1/053 ,  F25B31/006 ,  F25B2500/12

摘要： A high efficiency, low maintenance single stage or multi-stage centrifugal compressor assembly for large cooling installations. A cooling system provides direct, two-phase cooling of the rotor by combining gas refrigerant from the evaporator section with liquid refrigerant from the condenser section to affect a liquid/vapor refrigerant mixture. Cooling of the stator with liquid refrigerant may be provided by a similar technique. A noise suppression system is provided by injecting liquid refrigerant spray at points between the impeller and the condenser section. The liquid refrigerant may be sourced from high pressure liquid refrigerant from the condenser section.

公开(公告)号：EP2061998A4

公开(公告)日：2013-08-28

申请号：EP07839361

申请日：2007-10-09

申请人： AAF MCQUAY INC

发明人： DOTY MARK C ,  CAMPAIGNE EARL A ,  WATSON THOMAS A ,  BUTLER PAUL K ,  CLINE QUENTIN E ,  SHOWALTER S SAMUEL J

IPC分类号： F25B31/00 ,  B23P11/00 ,  F03B3/18 ,  F25B17/00 ,  F25B23/00 ,  H02K37/00

CPC分类号： F25B1/053 ,  F04D25/0606 ,  F04D27/0261 ,  F04D29/058 ,  F04D29/4213 ,  F04D29/462 ,  F04D29/5806 ,  F05D2250/51 ,  F16C32/044 ,  F16C2360/44 ,  F25B31/006 ,  F25B49/025 ,  F25B2600/021 ,  H02K1/32 ,  H02K5/128 ,  H02K5/20 ,  H02K5/225 ,  H02K7/09 ,  H02K7/14 ,  H02K9/00 ,  H02K9/19 ,  H02K11/25 ,  Y02B30/741 ,  Y10T29/49826

摘要： A high efficiency, low maintenance single stage or multi-stage centrifugal compressor assembly for large cooling installations. The assembly is highly efficient by virtue of a variable frequency drive (VFD) that drives a permanent magnet motor and matches compressor speed with compressor load, a direct drive impeller that eliminates gearing losses, and magnetic bearings that reduce frictional losses. The back-emf produced by the motor provides an intermediate power source for the magnetic bearings in the event of a loss of electrical power. A cooling system provides direct cooling of the rotor with gas refrigerant, and cooling of the stator with liquid refrigerant. Modular construction allows the compressor to be retrofit with upgrades. An inlet guide vane system operates without need for oil lubrication. The use of light metal castings and elimination of gearing reduces the weight to one-third or less of comparably powered conventional units.

摘要翻译： 用于大型冷却装置的高效率，低维护性单级或多级离心式压缩机组件。 该组件通过驱动永磁电动机并将压缩机速度与压缩机负载相匹配的变频驱动（VFD），消除传动损失的直接驱动叶轮和减少摩擦损失的磁轴承来实现高效。 电动机产生的反电动势在电力损失的情况下为磁轴承提供中间电源。 冷却系统提供转子与气体制冷剂的直接冷却，以及用液体制冷剂冷却定子。 模块化结构使压缩机能够随着升级而改进。 入口导叶系统无需油润滑。 使用轻金属铸件和消除传动装置将重量减轻到比较动力的传统装置的三分之一或更少。