公开(公告)号：US20050166617A1

公开(公告)日：2005-08-04

申请号：US10769161

申请日：2004-01-30

Applicant: Michael Taras ,  Alexander Lifson ,  Thomas Dobmeier

Inventor： Michael Taras ,  Alexander Lifson ,  Thomas Dobmeier

IPC: F25B41/04 ,  F25B7/00

CPC classification number: F25B41/04 ,  F25B2400/075 ,  F25B2400/13 ,  F25B2600/0261 ,  F25B2600/2509

Abstract: A refrigerant cycle is provided with tandem compressors. Only some of the multiple compressors are provided with an economized cycle, and an optional unloader valve for selectively returning flow from an economizer injection port back to suction. The present invention thus provides the economized operation capabilities and benefits for a refrigerant cycle having tandem compressors, without the complexity of providing separate economizer arrangement for each of the compressors.

Abstract translation: 制冷循环设有串联式压缩机。 只有一些多台压缩机具有经济的循环，以及可选的卸载阀，用于选择性地将节流器注入口的流量返回到抽吸。 因此，本发明提供了具有串联压缩机的制冷剂循环的经济的操作能力和益处，而不需要为每个压缩机提供单独的节能器装置的复杂性。

公开(公告)号：US20050103037A1

公开(公告)日：2005-05-19

申请号：US10712682

申请日：2003-11-13

Applicant: Alexander Lifson ,  Michael Taras

Inventor： Alexander Lifson ,  Michael Taras

IPC: F25B41/04 ,  F25B1/00 ,  F25B1/10 ,  F25B49/00

CPC classification number: F25B41/04 ,  F25B2400/075 ,  F25B2500/28 ,  F25B2600/2519

Abstract: A refrigerant cycle is disclosed having a number of compressors operating in tandem and supplying a compressed refrigerant to a refrigerant system. Discharge lines communicate a compressed refrigerant to a central discharge line for receiving flow from all tandem compressors. A control is operational to determine a number of compressors need to be operated or whether some compressors should be shutdown to satisfy load requirements. Shutoff valves are placed on discharge lines outwardly of the shell of the compressors. That can be shutdown during part load operation. These shutoff valves are closed when their associated compressors are stopped to prevent backflow of refrigerant from operating compressors through the shutoff compressor, and into the system suction side. Additionally, high pressure differential across the compressor internal discharge check valve is eliminated and the possibility of compressor flooding through a discharge line is reduced. Thus, compressor/system performance is enhanced and reliability is improved.

公开(公告)号：US20050086970A1

公开(公告)日：2005-04-28

申请号：US10693593

申请日：2003-10-24

Applicant: Alexander Lifson ,  Thomas Dobmeier ,  Michael Taras

Inventor： Alexander Lifson ,  Thomas Dobmeier ,  Michael Taras

IPC: F25B13/00 ,  F25B41/04 ,  F25B41/00 ,  F25B5/00

CPC classification number: F25B41/046 ,  F25B13/00 ,  F25B41/062 ,  F25B2313/02742 ,  F25B2400/13 ,  F25B2500/18

Abstract: A refrigerant system is operable in either heating mode or cooling mode. The system is also provided with an economizer cycle that will function in either heating mode or cooling mode. A four-way valve assembly selectively communicates refrigerant from either an indoor heat exchanger or outdoor heat exchanger to an economizer heat exchanger. The valve assembly further includes a restriction for restricting a refrigerant flow downstream of the economizer heat exchanger. The valve assembly provides two distinct restrictions such that a different size restriction is presented to the flow in cooling and heating modes. In this way, a single valve assembly can provide both the required routing for the alternative heating and cooling modes, and at the same time allow for distinct restriction sizes for the two modes without the necessity of separate expansion devices, also improving overall system cost and reliability.

Abstract translation: 制冷剂系统可以在加热模式或冷却模式中操作。 该系统还具有将在加热模式或冷却模式下工作的节能循环。 四通阀组件选择性地将制冷剂从室内热交换器或室外热交换器传送到节能器热交换器。 阀组件还包括用于限制节能热交换器下游的制冷剂流的限制。 阀组件提供了两个不同的限制，使得在冷却和加热模式下对流动提供了不同的尺寸限制。 以这种方式，单个阀组件可以为替代的加热和冷却模式提供所需的路线，并且同时允许两种模式的不同的限制尺寸，而不需要单独的膨胀装置，也提高整体系统成本， 可靠性。

公开(公告)号：US06873504B2

公开(公告)日：2005-03-29

申请号：US10247449

申请日：2002-09-19

Applicant: Alexander Lifson ,  Michael F. Taras

Inventor： Alexander Lifson ,  Michael F. Taras

IPC: F04B49/10 ,  H02H1/00 ,  H02H3/13 ,  H02H3/34 ,  H02H7/09 ,  H03L7/08 ,  H02H7/00

CPC classification number: H02H7/09 ,  H02H1/0038

Abstract: A system for detecting loss of an electrical phase in a compressor system includes a compressor system component having a plurality of phase carrying legs; a sensor for measuring current communicated with one leg of the plurality of phase carrying legs; and a processor unit adapted to receive a signal from the sensor and determine whether loss of phase has occurred in any of the plurality of phase carrying legs.

Abstract translation: 用于检测压缩机系统中的电相损失的系统包括具有多个相位支路的压缩机系统部件; 传感器，用于测量与所述多个相位腿中的一条腿相通的电流; 以及处理器单元，其适于从所述传感器接收信号，并且确定所述多个相位腿中的任何一个中是否发生相位损失。

公开(公告)号：US06826918B1

公开(公告)日：2004-12-07

申请号：US10732565

申请日：2003-12-10

Applicant: Michael F. Taras ,  Alexander Lifson ,  Howard H. Fraser, Jr.

Inventor： Michael F. Taras ,  Alexander Lifson ,  Howard H. Fraser, Jr.

IPC: F25B100

CPC classification number: F25B1/00 ,  F25B40/00 ,  F25B2400/13

Abstract: The invention provides two distinct schematics allowing system performance enhancement through the utilization of an auxiliary heat exchanger and splitting the refrigerant flow into primary and secondary paths. A system performance boost is achieved due to extra subcooling of a primary refrigerant flow in an auxiliary heat exchanger as well as superheat reduction of the combined refrigerant flow entering the compressor and a primary refrigerant flow pressure drop decrease through the evaporator (in comparison to the prior art). The invention offers the superior benefits outlined above with only a moderate cost increment. Also, employment of conventional components only, and no compressor modifications make implementation of the proposed schematics even more attractive.

Abstract translation: 本发明提供了两个截然不同的原理图，通过利用辅助热交换器并将制冷剂流分解成主要和次要路径来提高系统性能。 由于辅助热交换器中的初级制冷剂流的过度冷却以及进入压缩机的组合制冷剂流的过热减少以及通过蒸发器的初级制冷剂流量压降降低（与之前相比），系统性能提升是实现的 艺术）。 本发明提供了上述优点，只有适度的成本增量。 而且，仅使用常规部件，并且没有压缩机修改使得所提出的示意​​图的实现更具吸引力。

公开(公告)号：US06821098B2

公开(公告)日：2004-11-23

申请号：US10364119

申请日：2003-02-11

Applicant: Alexander Lifson

Inventor： Alexander Lifson

IPC: F04C1816

CPC classification number: F04C29/12

Abstract: A compressor has male and female rotors with enmeshed screw-type body portions. A housing cooperates with the rotors to define inlet and outlet chambers for pumping of fluid from/to when the male rotor in a first direction and the female rotor rotates in an opposite direction. The housing cooperates with the rotors to define inlet and outlet ports at the inlet and outlet chambers for each of a male and female compression pocket. The inlet ports and/or outlet ports of the respective male and female compression pockets are positioned to respectively close or open sequentially.

Abstract translation: 压缩机具有带啮合的螺旋型主体部分的阳和阴转子。 壳体与转子配合以限定用于当第一方向上的阳转子和阴转子沿相反方向旋转时从/向泵送流体的入口和出口室。 壳体与转子配合以在入口和出口腔室处限定用于每个雄性和阴性压缩袋的入口和出口。 相应的阳和阴压缩袋的入口端口和/或出口定位成分别关闭或依次打开。

公开(公告)号：US06817205B1

公开(公告)日：2004-11-16

申请号：US10693556

申请日：2003-10-24

Applicant: Alexander Lifson ,  Thomas J. Dobmeier ,  Michael F. Taras

Inventor： Alexander Lifson ,  Thomas J. Dobmeier ,  Michael F. Taras

IPC: F25B1300

CPC classification number: F25B13/00 ,  F25B2313/02742 ,  F25B2400/13

Abstract: A refrigerant system is operable either in a heating mode or a cooling mode. The system is also provided with an economizer cycle that will function in both heating mode or cooling mode. A pair of four-way valves control the flow of refrigerant through the refrigerant cycle in a preferred embodiment. The first valve properly routes the refrigerant from the compressor either to the outdoor heat exchanger or to the indoor heat exchanger dependent upon whether cooling mode or heating mode is in place. The second valve routes the refrigerant serially from either the outdoor heat exchanger or the indoor heat exchanger through an economizer heat exchanger and a main expansion device, again dependent on whether the refrigerant cycle is in a cooling mode or in a heating mode. A tap is positioned upstream of the economizer heat exchanger and taps a portion of the refrigerant to provide the economizer function. The present invention thus provides a simple system for utilizing a refrigerant cycle for both cooling and heating modes, while still providing an economizer function in both modes.

Abstract translation: 制冷剂系统可以在加热模式或冷却模式中操作。 该系统还具有在加热模式或冷却模式下工作的节能循环。 在优选实施例中，一对四通阀控制制冷剂循环中的制冷剂流动。 第一个阀根据冷却模式或加热模式是否正确将制冷剂从压缩机正确地输送到室外热交换器或室内热交换器。 第二阀将制冷剂从室外热交换器或室内热交换器顺序地通过节能器热交换器和主膨胀装置连续地进行，这也取决于制冷剂循环是处于冷却模式还是处于加热模式。 水龙头位于节能器热交换器的上游，并且抽吸一部分制冷剂以提供节能器功能。 因此，本发明提供了一种用于在冷却和加热模式下利用制冷剂循环的简单系统，同时在两种模式中仍然提供节能器功能。

公开(公告)号：US06799951B2

公开(公告)日：2004-10-05

申请号：US10207407

申请日：2002-07-25

Applicant: Alexander Lifson ,  Michael F. Taras ,  Howard H. Fraser, Jr.

Inventor： Alexander Lifson ,  Michael F. Taras ,  Howard H. Fraser, Jr.

IPC: F04B4900

CPC classification number: F04C28/28 ,  F04B49/10 ,  F04D27/001 ,  F25B1/10 ,  F25B49/005 ,  F25B49/022 ,  F25B2400/13

Abstract: A method for detecting compressor degradation includes the steps of providing a dataset for a compressor relating compressor operating parameters to each other; detecting real time actual values of the compressor operating parameters including an evaluated operating parameter; using at least one of the real time actual values and the dataset to determine a predicted value of the evaluated operating parameter; and comparing the predicted value of the evaluated operating parameter to the real time actual value of the evaluated operating parameter. This advantageously allows a prognosis of compressor performance to determine whether performance degradation is occurring.

Abstract translation: 一种用于检测压缩机劣化的方法包括以下步骤：为压缩机提供压缩机操作参数的数据集; 检测包括评估的操作参数的压缩机操作参数的实时实际值; 使用实时实际值和数据集中的至少一个来确定所评估的运行参数的预测值; 以及将所评估的操作参数的预测值与所评估的操作参数的实时实际值进行比较。 这有利地允许压缩机性能的预测来确定是否发生性能降级。

公开(公告)号：US06648604B1

公开(公告)日：2003-11-18

申请号：US09092368

申请日：1998-06-05

Applicant: Alexander Lifson

Inventor： Alexander Lifson

IPC: F04B1924

CPC classification number: F04C28/28 ,  F04C18/0215 ,  F04C18/16 ,  F04C23/008 ,  F04C28/06 ,  F04C29/02 ,  F04C29/023 ,  F04C2270/701 ,  F25B2500/26

Abstract: In a method of operating a scroll compressor at startup, the compressor is rotated in reverse for a brief period of time. The compressor is of a type which 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 much more benign forward start as no refrigerant is drawn into the scroll 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 begin to be driven in the forward direction.

Abstract translation: 在启动时操作涡旋式压缩机的方法中，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。 这导致在没有制冷剂被吸入到涡旋压缩机泵中并且在起动时从压缩机中抽出的油的量被最小化的情况下更加良性地向前开始。 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，并且压缩机可以开始沿向前方向被驱动。

公开(公告)号：US06571576B1

公开(公告)日：2003-06-03

申请号：US10115622

申请日：2002-04-04

Applicant: Alexander Lifson ,  James W. Bush ,  Michael F. Taras ,  Howard H. Fraser, Jr. ,  Russell G. Lewis

Inventor： Alexander Lifson ,  James W. Bush ,  Michael F. Taras ,  Howard H. Fraser, Jr. ,  Russell G. Lewis

IPC: F25B4100

CPC classification number: F25B41/04 ,  F04C18/0215 ,  F04C29/042 ,  F25B1/047 ,  F25B1/10 ,  F25B49/022 ,  F25B2400/13 ,  F25B2600/0261 ,  F25B2600/2509

Abstract: An improved apparatus and method for injecting a liquid/vapor into compression chambers at an intermediate pressure utilizes the economizer injection ports already found in the compressor. By selectively communicating a liquid to be injected into the compression chambers to the economizer return line, the economizer return line and its ports are utilized for this liquid/vapor injection. In this way, no additional flow connections at the compressor are necessary. Moreover, by injecting the liquid at an intermediate pressure point, the other benefits are provided. In general, the liquid is injected to reduce the discharge temperature of the refrigerant under certain operational conditions.

Abstract translation: 用于在中间压力下将液体/蒸汽喷射到压缩室中的改进的装置和方法利用了已经在压缩机中找到的节约器注入口。 通过将要注入的压缩室中的液体选择性地连通到节能器返回管线，节能器返回管线及其端口用于该液体/蒸气喷射。 以这种方式，在压缩机上不需要额外的流动连接。 此外，通过在中间压力点注入液体，提供了其它益处。 通常，注射液体以在某些操作条件下降低制冷剂的排放温度。