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71. 发明授权

US08359873B2 Oil return in refrigerant system 有权
标题翻译：回油制冷系统
公开(公告)号：US08359873B2
公开(公告)日：2013-01-29
申请号：US12377144
申请日：2006-08-22
申请人： Alexander Lifson , Michael F. Taras
发明人： Alexander Lifson , Michael F. Taras
IPC分类号： F25B43/02
CPC分类号： F25B31/002 , F25B49/02 , F25B2500/16 , F25B2600/2513
摘要： To address the problem of lubricant entrainment within the refrigerant system components such as an evaporator and suction line, a control is provided to periodically, substantially and intermittently increase the refrigerant flow through these components to thereby carry the trapped lubricant back to the compressor. The increased flow of refrigerant can be accomplished by periodically throttling and then unthrottling either an expansion device or a suction modulation valve to cause instantaneous pressure buildup within a respective section of the vapor compression system and subsequent increase of the refrigerant flow through the above-referenced components such as an evaporator and suction line. Suggested time intervals of both the throttling and unthrottling states are provided, as well as the frequency of occurrence for subsequent oil return cycles.
摘要翻译：为了解决在诸如蒸发器和吸入管线的制冷剂系统部件内的润滑剂夹带的问题，提供了一个控制以周期性地，基本上和间歇地增加通过这些部件的制冷剂流动，从而将被捕获的润滑剂运回压缩机。制冷剂的增加的流动可以通过周期性地节流，然后将膨胀装置或抽吸调节阀切断，以在蒸汽压缩系统的相应部分内产生瞬时压力，随后增加制冷剂流过上述参考部件例如蒸发器和吸入管线。提供了节流和节流状态的建议时间间隔，以及后续回油循环的发生频率。

72. 发明授权

US08356489B2 Injection of refrigerant in system with expander 失效
标题翻译：在膨胀机系统中注入制冷剂
公开(公告)号：US08356489B2
公开(公告)日：2013-01-22
申请号：US12515443
申请日：2006-12-26
申请人： Alexander Lifson , Michael F. Taras
发明人： Alexander Lifson , Michael F. Taras
IPC分类号： F25B1/00 , F25B1/10 , F25D9/00
CPC分类号： F25B9/06 , F25B1/10 , F25B11/02 , F25B2309/061 , F25B2400/13 , F25B2400/14 , F25B2600/2521
摘要： A refrigerant system incorporates an expander. At least a portion of refrigerant bypasses an evaporator and is injected into the compression process to cool main refrigerant vapor flow and compressor elements. In disclosed embodiments, the injected refrigerant may be partially expanded in the expander and routed either into the compressor suction or to an intermediate point in the compression process. A valve may control the amount of the injected refrigerant to achieve desired operational characteristics for the refrigerant system.
摘要翻译：制冷剂系统包括膨胀机。制冷剂的至少一部分绕过蒸发器并被注入压缩过程以冷却主制冷剂蒸气流和压缩机元件。在所公开的实施例中，注入的制冷剂可以在膨胀机中部分膨胀并且在压缩过程中被引导到压缩机吸入件或中间点。阀可以控制注入的制冷剂的量以达到制冷剂系统的期望的操作特性。

73. 发明授权

US08316657B2 Refrigerant system and control method 有权
标题翻译：制冷剂系统及控制方法
公开(公告)号：US08316657B2
公开(公告)日：2012-11-27
申请号：US12528910
申请日：2007-02-28
申请人： Alexander Lifson
发明人： Alexander Lifson
IPC分类号： F25B41/00
CPC分类号： F25B49/02 , F25B1/10 , F25B2400/13 , F25B2600/025 , F25B2600/0261 , F25B2600/2509 , F25B2700/21151 , F25B2700/21152
摘要： A refrigerant system is configured to alternatingly run in an economized mode and a standard mode. A control system shifts the refrigerant system between the economized mode and standard mode responsive to a determined efficiency reflecting a combination of at least two of: compressor isentropic efficiency; condenser efficiency; evaporator efficiency; efficiency of hardware mechanically powering the compressor; and a mode-associated cycling efficiency. In a bypass mode, a bypass refrigerant flow from an intermediate port may return to the suction port. Shifting into the bypass mode may be similarly controlled based upon the determined efficiency.
摘要翻译：制冷剂系统被配置为以经济模式和标准模式交替运行。控制系统响应于确定的效率反映经济模式和标准模式之间的制冷剂系统，反映出以下组合中的至少两个：压缩机等熵效率; 冷凝器效率; 蒸发器效率; 压缩机机械动力的硬件效率; 和模式相关的循环效率。在旁通模式中，来自中间端口的旁路制冷剂流可以返回到吸入口。可以基于所确定的效率来类似地控制切换到旁路模式。

74. 发明申请

US20120291462A1 Ejector Cycle Refrigerant Separator 有权
标题翻译：喷射循环制冷分离器
公开(公告)号：US20120291462A1
公开(公告)日：2012-11-22
申请号：US13522121
申请日：2011-07-20
申请人： Parmesh Verma , Jinliang Wang , Frederick J. Cogswell , Hans-Joachim Huff , Alexander Lifson , Richard G. Lord
发明人： Parmesh Verma , Jinliang Wang , Frederick J. Cogswell , Hans-Joachim Huff , Alexander Lifson , Richard G. Lord
IPC分类号： F25B1/06 , F28D15/00 , F25B43/00 , F25B1/00
CPC分类号： F25B41/00 , F25B1/10 , F25B40/00 , F25B43/006 , F25B2309/061 , F25B2341/0011 , F25B2341/0012 , F25B2400/23 , F25B2600/21
摘要： A system has a compressor. A heat rejection heat exchanger is coupled to the compressor to receive refrigerant compressed by the compressor. An ejector has a primary inlet coupled with heat rejection heat exchanger to receive refrigerant, a secondary inlet, and an outlet. The system has a heat absorption heat exchanger. The system includes means for providing at least of a 1-10% quality refrigerant to the heat absorption heat exchanger and an 85-99% quality refrigerant to at least one of the compressor and, if present, a suction line heat exchanger.
摘要翻译：系统具有压缩机。排热热交换器与压缩机连接以接收由压缩机压缩的制冷剂。喷射器具有与散热换热器相连接的主入口以接收制冷剂，次级入口和出口。该系统具有吸热式热交换器。该系统包括用于向吸热热交换器提供至少1-10％质量的制冷剂的装置，以及至少一个压缩机以及如果存在吸入管线热交换器的85-99％质量的制冷剂。

75. 发明授权

US08292599B2 Compressor reverse rotation of variable duration on start-up 有权
标题翻译：压缩机在启动时可变持续时间的反向旋转
公开(公告)号：US08292599B2
公开(公告)日：2012-10-23
申请号：US12530486
申请日：2007-03-13
申请人： Alexander Lifson , Jason Scarcella
发明人： Alexander Lifson , Jason Scarcella
IPC分类号： F04B17/00 , F04B35/00
CPC分类号： F04C18/0215 , F04C23/008 , F04C28/06 , F04C29/045
摘要： In a method of operating a compressor at startup, the compressor is rotated in reverse for a brief period of time. The compressor is of a type that does not compress liquid when rotated in reverse. The purpose is to boil off the liquid refrigerant from the oil by heating and agitating the mixture of oil and refrigerant in the oil sump. This results in a much more benign forward start as less refrigerant is drawn into the compressor pump and the amount of oil pumped out of the compressor on start up is minimized. Also, the viscosity of oil is increased and lubrication of the bearings is improved. After a short period of time reverse rotation is stopped and the compressor can start rotating in the forward direction. The short period of time of reverse rotation is varied based upon system conditions. In one embodiment, the variation can occur by reducing the reverse run time as ambient temperature increases. In another embodiment, electrical conditions such as incoming voltage and/or a ratio of voltage to frequency can be utilized to change the reverse run time.
摘要翻译：在启动时操作压缩机的方法中，压缩机反向旋转短时间。压缩机是反向旋转时不会压缩液体的类型。目的是通过加热和搅拌油底壳中的油和制冷剂的混合物来从油中清除液体制冷剂。这导致更加良性的正向启动，因为较少的制冷剂被吸入到压缩机泵中，并且在起动时从压缩机中泵出的油的量被最小化。此外，油的粘度增加，轴承的润滑性提高。在短时间之后，反转停止，压缩机可以向前方开始旋转。反向旋转的短时间段根据系统条件而变化。在一个实施例中，通过在环境温度升高时减少反向运行时间可以发生变化。在另一个实施例中，可以利用诸如输入电压和/或电压与频率之比的电气条件来改变反向运行时间。

76. 发明授权

US08240162B2 Engine driven refrigerant compressor with pulse width modulation control 有权
标题翻译：发动机驱动的制冷压缩机具有脉宽调制控制
公开(公告)号：US08240162B2
公开(公告)日：2012-08-14
申请号：US12445644
申请日：2006-10-18
申请人： Michael F. Taras , Alexander Lifson
发明人： Michael F. Taras , Alexander Lifson
IPC分类号： F25B49/00
CPC分类号： F25B49/022 , F25B2327/00 , F25B2600/0251 , F25B2600/0252
摘要： A fuel-powered engine is provided to drive a mobile air conditioning or refrigeration unit such as a portable chiller, a container refrigeration unit, a portable packaged system, a transport tractor-trailer or truck refrigeration unit, etc. A control rapidly changes the engine speed between the predefined set of discreet engine speeds to precisely adjust the capacity of the refrigerant system. If the engine operates only at a single speed, then the control cycles the engine between this operating speed and a zero speed (the engine is shut off). If the engine can operate at multiple discreet speeds, then the control can cycle the engine between any of these speeds (including a zero speed). When a lower capacity is desirable, the engine operates for a longer time interval at a lower speed, and when a higher capacity is desirable, the engine operates for a longer period of time at a higher speed. The cycle rate is selected to control the comfort (e.g. temperature and/or humidity) of the conditioned environment within the specified tolerance band, while conforming to the reliability requirements.
摘要翻译：提供燃料动力的发动机来驱动移动空调或制冷单元，例如便携式冷却器，容器制冷单元，便携式包装系统，运输拖拉机拖车或卡车制冷单元等。控制快速地改变发动机在预定的一套离散发动机速度之间的速度，以精确地调节制冷剂系统的容量。如果发动机仅以单个速度运行，则控制器将使发动机在该运行速度和零速度之间循环（发动机关闭）。如果发动机可以以多个谨慎的速度运行，则控制器可以在任何这些速度（包括零速度）之间循环发动机。当需要较低的容量时，发动机以较低的速度运转更长的时间间隔，并且当需要更高的容量时，发动机以更高的速度运行更长的时间段。选择循环速率以在符合可靠性要求的情况下控制在规定的公差带内的调节环境的舒适度（例如温度和/或湿度）。

77. 发明申请

US20120192583A1 Suction Cutoff Unloader Valve For Compressor Capacity Control 审中-公开
标题翻译：用于压缩机容量控制的抽吸式卸载阀
公开(公告)号：US20120192583A1
公开(公告)日：2012-08-02
申请号：US13384811
申请日：2010-07-12
申请人： Alexander Lifson , Michael F. Taras
发明人： Alexander Lifson , Michael F. Taras
IPC分类号： F04B49/03 , F25B49/02
CPC分类号： F04B39/08 , F04B27/0451 , F04B27/053 , F04B27/067 , F04B27/0673 , F04B27/24 , F04B35/01 , F04B39/1073 , F04B49/03 , F04B49/22 , F04B49/225 , F04B2201/06011 , F25B2400/074 , F25B2600/026 , F25B2600/2521
摘要： A reciprocating compressor includes a first cylinder and a second cylinder, first and second suction cutoff unloader valve assemblies, and a controller. The first and second suction cutoff unloader valve assemblies are integral to the compressor and are capable of a rapid cycling to interrupt flow of refrigerant to the first and second cylinders. The controller operates at least one of the first suction cutoff unloader valve assembly or second suction cut-off unloader valve assembly in the rapid cycling and monitor a number of rapid cycles. In another aspect, a multi-stage compressor comprises a lower pressure stage and a higher pressure stage, and at least one suction cutoff unloader valve assembly capable of a rapid cycling to interrupt flow of refrigerant to a lower stage cylinder.
摘要翻译：往复式压缩机包括第一气缸和第二气缸，第一和第二吸入切除卸载器阀组件以及控制器。第一和第二抽吸截止卸载器阀组件与压缩机成一体，并且能够快速循环以中断制冷剂到第一和第二气缸的流动。控制器操作第一吸入切断卸载器阀组件或第二吸入截止卸载阀组件中的至少一个，以快速循环并监视多个快速循环。另一方面，多级压缩机包括较低压力级和较高压力级，以及能够快速循环以阻止制冷剂流向下级气缸的至少一个吸入切断卸载阀组件。

78. 发明申请

US20120167602A1 PRESSURE SPIKE REDUCTION FOR REFRIGERANT SYSTEMS INCORPORATING A MICROCHANNEL HEAT EXCHANGER 审中-公开
标题翻译：配有微通道热交换器的制冷系统的压力减少
公开(公告)号：US20120167602A1
公开(公告)日：2012-07-05
申请号：US13395548
申请日：2010-10-14
申请人： Michael F. Taras , Alexander Lifson
发明人： Michael F. Taras , Alexander Lifson
IPC分类号： F25B49/02 , F25B1/10 , F25B49/00 , F25B1/00
CPC分类号： F25B49/02 , F25B2341/0681 , F25B2400/0411 , F25B2400/075 , F25B2500/07 , F25B2500/26 , F25B2600/0253 , F25B2600/026 , F25B2600/2513 , F25B2700/1931 , Y02B30/741
摘要： A refrigerant system includes at least one compressor (54, 56) that compresses refrigerant and delivers it downstream to a heat rejection heat exchanger (26). The heat rejection heat exchanger is a microchannel heat exchanger. Refrigerant passes from the heat rejection heat exchanger downstream to an expansion device (60), from the expansion device through an evaporator (66), and from the evaporator back to the at least one compressor. A control (58) operates at least one compressor and the expansion device to reduce pressure spikes at transient conditions.
摘要翻译：制冷剂系统包括至少一个压缩制冷剂的压缩机（54,56），并将其下游输送到排热热交换器（26）。排热换热器是微通道热交换器。制冷剂从下游的排热热交换器通过膨胀装置（60），从膨胀装置通过蒸发器（66）和从蒸发器返回到至少一个压缩机。控制器（58）操作至少一个压缩机和膨胀装置以在瞬态条件下减小压力尖峰。

79. 发明申请

US20110185753A1 SUPERHEAT CONTROL FOR HVAC&R SYSTEMS 有权
标题翻译： HVAC＆R系统的超级控制
公开(公告)号：US20110185753A1
公开(公告)日：2011-08-04
申请号：US12161700
申请日：2005-05-26
申请人： Alexander Lifson , Michael F. Taras , Richard Lord
发明人： Alexander Lifson , Michael F. Taras , Richard Lord
IPC分类号： F25B1/00 , F25B41/00
CPC分类号： F25B49/02 , F25B31/006 , F25B41/043 , F25B2600/21 , F25B2600/2513 , F25B2700/2115 , F25B2700/21151 , F25B2700/21175
摘要： A superheat control utilizes a sensor at a location downstream of an evaporator after some heat is delivered to the refrigerant. In one embodiment, the compressor is a sealed compressor with at least a portion of the refrigerant being heated by an electric motor. The temperature is sensed after the refrigerant temperature has increased after passing over the electric motor. In another embodiment, the refrigerant temperature is measured after some minimal compression and minimal temperature rise has occurred within the compressor pumping elements. In either case, by measuring the temperature of the refrigerant after some additional heat has been added to the refrigerant, the refrigerant super-heat leaving the evaporator can be controlled to a lower value. The improved superheat control enhances the system performance by increasing system efficiency, system capacity and improving oil return to the compressor.
摘要翻译：过热控制在将一些热量输送到制冷剂之后，在蒸发器下游的位置使用传感器。在一个实施例中，压缩机是密封的压缩机，其中至少一部分制冷剂被电动机加热。在通过电动机之后制冷剂温度升高后感测温度。在另一个实施例中，在压缩机泵送元件中发生一些最小压缩和最小温升之后，测量制冷剂温度。在任一情况下，通过在向制冷剂添加一定量的热量之后测量制冷剂的温度，可以将离开蒸发器的制冷剂超热量控制在较低的值。改进的过热控制通过提高系统效率，系统容量和改善对压缩机的回油来提高系统性能。

80. 发明授权

US07921661B2 Dehumidification system with multiple condensers and compound compressor 有权
标题翻译：具有多个冷凝器和复合压缩机的除湿系统
公开(公告)号：US07921661B2
公开(公告)日：2011-04-12
申请号：US10978570
申请日：2004-11-01
申请人： Michael F. Taras , Alexander Lifson
发明人： Michael F. Taras , Alexander Lifson
IPC分类号： F25B49/00
CPC分类号： F24F3/153 , F25B1/10 , F25B6/00 , F25B41/04 , F25B2400/0403
摘要： A refrigerant cycle is provided with a multi-port compressor or compressor stages connected in series, and multiple condensers. A single evaporator communicates with the plurality of condensers. At least one of the plurality of condensers receives fully compressed refrigerant while the other condensers receive refrigerant at intermediate pressure. A control can optionally direct refrigerant to the condensers to achieve desired system heat rejection characteristics and operating conditions. One or multiple reheat coils may be associated with the evaporator and are arranged either in series or in parallel to provide a desired dehumidification function and reheat stages. One or several of the intermediate pressure condensers may be utilized for the reheat function as well.
摘要翻译：制冷循环具有串联连接的多口压缩机或压缩机级，以及多个冷凝器。单个蒸发器与多个冷凝器连通。多个冷凝器中的至少一个冷凝器接收完全压缩的制冷剂，而另一个冷凝器在中间压力下接收制冷剂。控制器可以可选地将制冷剂引导到冷凝器以实现期望的系统排热特性和操作条件。一个或多个再热线圈可以与蒸发器相关联并且被串联或并联设置以提供期望的除湿功能和再加热阶段。中压压缩机中的一个或几个也可用于再热功能。

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