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1. 发明申请

WO2015122991A3 HOT GAS BYPASS FOR TWO-STAGE COMPRESSOR 审中-公开
标题翻译：两级压缩机热气旁路
公开(公告)号：WO2015122991A3
公开(公告)日：2015-11-26
申请号：PCT/US2015011940
申请日：2015-01-20
申请人： CARRIER CORP
发明人： SISHTLA VISHNU M
IPC分类号： F25B1/053 , F25B1/10 , F25B49/02
CPC分类号： F25B1/10 , F04D17/122 , F04D27/0215 , F04D27/0223 , F04D27/023 , F04D27/0238 , F04D29/441 , F25B1/053 , F25B41/04 , F25B49/02 , F25B2400/0403 , F25B2400/0411 , F25B2400/13 , F25B2400/23 , F25B2600/17 , F25B2600/2501 , F25B2700/151 , F25B2700/1931 , F25B2700/195 , F25B2700/197
摘要： A vapor compression system comprising a centrifugal compressor (22) having: an inlet (24); an outlet (26); a first impeller stage (28); a second impeller stage (30); and a motor (34) coupled to the first impeller stage and second impeller stage. A first heat exchanger (38) is downstream of the outlet along a refrigerant flowpath. An expansion device (56) and a second heat exchanger (64) are upstream of the inlet along the refrigerant flowpath. A bypass flowpath (120; 320) is positioned to deliver refrigerant from the compressor bypassing the first heat exchanger. A valve (128) is positioned to control flow through the bypass flowpath, wherein: the bypass flowpath extends from a first location (140) intermediate the inlet and outlet to a second location (142; 342) downstream of the first heat exchanger along the refrigerant flowpath.
摘要翻译：一种蒸汽压缩系统，包括离心式压缩机（22），该离心式压缩机具有：入口（24）一个出口（26）; 第一叶轮级（28）; 第二叶轮级（30）; 和联接到第一叶轮级和第二叶轮级的马达（34）。第一热交换器（38）沿着制冷剂流动路径在出口的下游。膨胀装置（56）和第二热交换器（64）沿制冷剂流动路径位于入口的上游。旁路流动路径（120; 320）定位成绕过第一热交换器从压缩机输送制冷剂。阀（128）被定位成控制通过旁路流动路径的流动，其中：旁路流动路径从入口和出口中间的第一位置（140）延伸到位于第一热交换器下游的第二位置（142; 342）制冷剂流路。

2. 发明申请

WO2012166338A3 HYBRID COMPRESSOR SYSTEM AND METHODS 审中-公开
标题翻译：混合压缩机系统及方法
公开(公告)号：WO2012166338A3
公开(公告)日：2013-01-24
申请号：PCT/US2012037872
申请日：2012-05-15
申请人： CARRIER CORP , SISHTLA VISHNU M
发明人： SISHTLA VISHNU M
IPC分类号： F25B41/04 , F25B1/10 , F25B31/00
CPC分类号： F04D29/582 , F25B1/10 , F25B31/00 , F25B41/04
摘要： An apparatus (20) has a centrifugal compressor (24), a positive displacement compressor (26), a first heat exchanger (32), and a second heat exchanger (36). A plurality of valves (70, 72, 74) are positioned to provide operation in at least two modes. In a first mode, refrigerant is compressed in the positive displacement compressor and the centrifugal compressor at least partially in parallel. In a second mode, refrigerant is compressed in the positive displacement compressor and the centrifugal compressor is offline. In a third mode, refrigerant is compressed in the positive displacement compressor and the centrifugal compressor at least partially in series.
摘要翻译：装置（20）具有离心压缩机（24），容积式压缩机（26），第一热交换器（32）和第二热交换器（36）。定位多个阀（70,72,74）以提供至少两种模式的操作。在第一模式中，制冷剂至少部分平行地在容积式压缩机和离心式压缩机中被压缩。在第二模式中，制冷剂在容积压缩机中被压缩，离心式压缩机离线。在第三模式中，制冷剂至少部分地串联在压缩机和离心压缩机中被压缩。

3. 发明申请

WO2006050271A2 VSD CONTROL 审中-公开
标题翻译： VSD控制
公开(公告)号：WO2006050271A2
公开(公告)日：2006-05-11
申请号：PCT/US2005039286
申请日：2005-10-31
申请人： CARRIER CORP , HOLDEN STEVEN J , SISHTLA VISHNU M , HOLMES CORNELIUS
发明人： HOLDEN STEVEN J , SISHTLA VISHNU M , HOLMES CORNELIUS
CPC分类号： F04B49/06 , F04B2203/0202 , F04B2203/0204 , F04B2203/0209 , H02P27/048 , H02P27/08
摘要： A compressor is powered by a motor which is, in turn, powered by a variable speed drive (VSD). The switching frequency and voltage/frequency relationship of the VSD may be adjusted dynamically to maximize efficiency.
摘要翻译：压缩机由马达供电，马达又由变速驱动器（VSD）供电。可以动态调整VSD的开关频率和电压/频率关系，以最大限度地提高效率。

4. 发明申请

WO2010135407A3 VARIABLE SPEED COMPRESSOR 审中-公开
标题翻译：可变速压缩机
公开(公告)号：WO2010135407A3
公开(公告)日：2011-03-03
申请号：PCT/US2010035369
申请日：2010-05-19
申请人： CARRIER CORP , SISHTLA VISHNU M
发明人： SISHTLA VISHNU M
IPC分类号： F25B49/02 , F04B49/20 , F04D27/00
CPC分类号： F25B49/022 , F04D25/022 , F04D27/0261 , F25B2600/0253 , F25B2700/21173 , Y02B30/741
摘要： A large tonnage water chiller 60 is disclosed that includes a drive motor 11a connected to a proximal drive shaft 18, 18a, 18b. The proximal drive shaft 18 is connected to a continuous variable transmission (CVT) 15, 15a, 15b. The CVT 15, 15a, 15b is connected to an output drive shaft 19, 19a, 19b. The output drive shaft 19, 19a, 19b is connected to an impeller 33 disposed within a compressor 10a that forms an evaporative refrigerant cycle with an evaporator 53 and condenser 52. A controller 50 controls the operation of the CVT 15, 15a, 15b based on the leaving chilled water temperature (54) in the evaporator 52 while maintaining operation of the drive motor 11a at a constant speed.
摘要翻译：公开了一种大吨位水冷却器60，其包括连接到近端驱动轴18,18a，18b的驱动马达11a。近端驱动轴18连接到连续可变传动装置（CVT）15，15a，15b。 CVT 15,15a，15b连接到输出驱动轴19,19a，19b。输出驱动轴19,19a，19b连接到设置在与蒸发器53和冷凝器52形成蒸发制冷剂循环的压缩机10a内的叶轮33.控制器50基于以下方式控制CVT 15，15a，15b的操作：在蒸发器52中的离开冷冻水温度（54），同时保持驱动电动机11a的运转恒定。

5. 发明申请

WO2009151895A2 METHODS AND SYSTEMS FOR INJECTING LIQUID INTO A SCREW COMPRESSOR FOR NOISE SUPPRESSION 审中-公开
标题翻译：将液体注入用于噪声抑制的螺杆压缩机的方法和系统
公开(公告)号：WO2009151895A2
公开(公告)日：2009-12-17
申请号：PCT/US2009044567
申请日：2009-05-19
申请人： CARRIER CORP , SISHTLA VISHNU M
发明人： SISHTLA VISHNU M
IPC分类号： F04C18/16 , F04C18/18 , F04C29/12
CPC分类号： F04C29/0007 , F04B41/06 , F04C18/165 , F04C29/0035 , F04C29/042 , F04C29/06 , F04C29/12 , F04C2270/13 , F04F5/54
摘要： A screw compressor 12 for use in a chiller assembly 10 includes cooperating screw rotors 22, 24, 26 configured to increase the pressure of a vaporized refrigerant flowing through the compressor 12, a venturi tube 50 arranged in a flow path of the refrigerant in the compressor 12 downstream of the rotors 22, 24, 26, and an inlet port 46 in fluid communication with a throat of the venturi tube 50 and configured to deliver liquid refrigerant from a condenser 16 of the chiller assembly 10 to the flow path of the refrigerant in the compressor 12. The venturi tube 50 is configured to cause a pressure drop in the refrigerant in the compressor 12. The liquid refrigerant delivered from the condenser 16 reduces pulsations in the pressure of the refrigerant discharged from the compressor 12.
摘要翻译：用于冷却器组件10中的螺杆式压缩机12包括协调的螺杆转子22,24,26，其配置成增加流过压缩机12的汽化制冷剂的压力，布置在压缩机中的制冷剂流动路径中的文丘里管50 转子22,24,26的下游，以及与文氏管50的喉部流体连通的入口端口46，并且构造成将液体制冷剂从冷却器组件10的冷凝器16输送到制冷剂的流动路径压缩机12.文丘里管50被配置为引起压缩机12中的制冷剂的压降。从冷凝器16输送的液体制冷剂减少从压缩机12排出的制冷剂的压力的脉动。

6. 发明专利

JP2001132676A HERMETICALLY SEALED REFRIGERATING DEVICE AND METHOD FOR IMPROVING PERFORMANCE IN PARTIAL LOAD OF HERMETICALLY SEALED REFRIGERATING DEVICE 失效
公开(公告)号：JP2001132676A
公开(公告)日：2001-05-18
申请号：JP2000293378
申请日：2000-09-27
申请人： CARRIER CORP
发明人： SISHTLA VISHNU M
IPC分类号： F04C18/16 , F01P9/06 , F04C28/08 , F04C29/00 , F04C29/02 , F25B1/047 , F25B31/00 , F25B49/02
摘要： PROBLEM TO BE SOLVED: To improve performance in a partial load of a variable speed screw type compressor of a hermetically sealed refrigerating device. SOLUTION: This hermetically sealed refrigerating device 10 extracts an oil rich layer formed in an upper layer of a cooler 22 from the cooler 22 to lubricate and seal rotors 12-1, 12-2 to be supply to an ejector 50 having the size suitable for supplying a maximum quantity of required lubricant via a line 40. A line 52-1 has a limiter 60 adjusted to the size to supply a proper flow of lubricant to the rotors 12-1, 12-2. A line 52-2 has a normally closed solenoid valve 62. When a speed of a motor 26 becomes sufficiently slow, the solenoid valve 62 is opened by a control device 34 to supply a larger quantity of oil to lubricate and seal the rotors 12-1, 12-2.

7. 发明专利

JP2004144087A Rotary vane diffuser for centrifugal compressor 审中-公开
公开(公告)号：JP2004144087A
公开(公告)日：2004-05-20
申请号：JP2003361436
申请日：2003-10-22
申请人： Carrier Corp , キャリアコーポレイションCarrier Corporation
发明人： SISHTLA VISHNU M , ZINSMEYER THOMAS M
IPC分类号： F04D27/02 , F04D29/46
CPC分类号： F04D29/462 , F04D27/0246 , F05D2250/52
摘要： PROBLEM TO BE SOLVED: To provide a vane diffuser for a centrifugal compressor, having a selectively adjustable vane pitch to be adaptable for variable loaded conditions.
SOLUTION: Each vane 21 is rotatable around a pivotal pin 34 near its leading edge 32 and is engaged with an operating member 66 near its tailing edge 33. The operating member 66 is attached to a common ring 67 selectively rotatable for moving the vanes 21 at a time. The ring 67 is supported at its outside peripheral edge by a roller 73 and positioned at the outside peripheral edge of a diffuser wall face such that there is no forward facing step protruding into a flow stream. A throat 87 is defined between the adjacent vanes 21 and the pivotal pin 34 for each vane 21 is arranged downstream of the throat 87 on a pressure surface 83 of the vane 21 to reduce the turbulent flow of the throat portion 87.
COPYRIGHT: (C)2004,JPO

8. 发明专利

JPH11132197A POSITIONING DRIVING MECHANISM AND BACKLASH ADJUSTING MECHANISM 失效
公开(公告)号：JPH11132197A
公开(公告)日：1999-05-18
申请号：JP22093398
申请日：1998-08-05
申请人： CARRIER CORP
发明人： SISHTLA VISHNU M , WRIGHT KENNETH A , GODLEWSKI FRANK H , GALLAGHER EDWARD G
IPC分类号： F04D27/02 , F04D29/46 , F16H55/18
摘要： PROBLEM TO BE SOLVED: To improve operability by constituting a positioning driving mechanism of a variable diffuser for a centrifugal compressor so as to rotate a cylindrical member through meshing of a pinion shaft and a rack gear by a rotary driving means, and arranging a movement limiter to restrict a movement of the cylindrical member. SOLUTION: A centrifugal compressor 10 has an impeller 12 to accelerate refrigerant vapor, a diffuser 14 to convert kinetic energy of the refrigerant vapor into pressure energy and a delivery plenum 16 to collect delivery vapor. The diffuser 14 is a variable structure, and contains an inside ring 40, an outside ring 42, a ring support mechanism 35 and a positioning driving mechanism 121. The positioning driving mechanism 121 is constituted so as to rotate the inside ring 40 in the circumferential direction on the inside of the outside ring 42 through a rack gear 123 meshing with a pinion shaft 126 by an actuator 128. In this inside ring 40, a movement is restricted between first and second positions by a movement limiter.

9. 发明公开

EP2307733A4 METHODS AND SYSTEMS FOR INJECTING LIQUID INTO A SCREW COMPRESSOR FOR NOISE SUPPRESSION 审中-公开
标题翻译：方法和系统流体的注入螺杆压缩机降噪
公开(公告)号：EP2307733A4
公开(公告)日：2014-07-02
申请号：EP09763186
申请日：2009-05-19
申请人： CARRIER CORP
发明人： SISHTLA VISHNU M
IPC分类号： F04C18/16 , F04C18/18 , F04C29/00 , F04C29/04 , F04C29/06 , F04C29/12
CPC分类号： F04C29/0007 , F04B41/06 , F04C18/165 , F04C29/0035 , F04C29/042 , F04C29/06 , F04C29/12 , F04C2270/13 , F04F5/54
摘要： A screw compressor for use in a chiller assembly includes cooperating screw rotors configured to increase the pressure of a vaporized refrigerant flowing through the compressor, a venturi tube arranged in a flow path of the refrigerant in the compressor downstream of the rotors, and an inlet port in fluid communication with a throat of the venturi tube and configured to deliver liquid refrigerant from a condenser of the chiller assembly to the flow path of the refrigerant in the compressor. The venturi tube is configured to cause a pressure drop in the refrigerant in the compressor. The liquid refrigerant delivered from the condenser reduces pulsations in the pressure of the refrigerant discharged from the compressor.

10. 发明公开

EP1854204A4 VSD CONTROL 审中-公开
标题翻译： VSD控制
公开(公告)号：EP1854204A4
公开(公告)日：2011-02-02
申请号：EP05821348
申请日：2005-10-31
申请人： CARRIER CORP
发明人： HOLDEN STEVEN J , SISHTLA VISHNU M , HOLMES CORNELIUS
IPC分类号： H02K41/02 , F02B1/00 , H02P1/26 , H02P5/00 , H02P27/04 , H02P27/08
CPC分类号： F04B49/06 , F04B2203/0202 , F04B2203/0204 , F04B2203/0209 , H02P27/048 , H02P27/08

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