公开(公告)号：US06430959B1

公开(公告)日：2002-08-13

申请号：US10073511

申请日：2002-02-11

Applicant: Alexander Lifson

Inventor： Alexander Lifson

IPC: F25B3100

CPC classification number: F25B5/02 ,  F04C18/0261 ,  F04C18/0269 ,  F04C29/0007 ,  F25B1/04 ,  F25B2400/13

Abstract: A scroll compressor is provided with economizer injection ports which extend through the wrap of one of the scroll members. Preferably the injection ports are formed through a so-called “hybrid” wrap which has a varying thickness. The other scroll member is provided with grooves in its base plate. The injection of economizer fluid occurs only during a portion of the orbiting cycle when the injection port and corresponding grooves are aligned with each other. However, as the orbiting cycle continues, the injection port will no longer be aligned with the groove. At that point, the injection is ceased. This allows a simple and precise way for valving the flow of the economizer fluid into the compression chambers.

Abstract translation: 涡旋压缩机设置有延伸通过其中一个涡旋构件的包裹体的节能器注入口。 优选地，注射端口通过具有变化的厚度的所谓的“混合”包装形成。 另一个涡旋构件在其底板中设置有凹槽。 节气器流体的注入仅在注入口和对应的槽彼此对准时在轨道循环的一部分期间发生。 然而，随着轨道循环的继续，注入口将不再与凹槽对齐。 在这一点上，注射停止了。 这允许简单和精确的方法来将经济流体的流动阀门压入压缩室。

公开(公告)号：US06290478B1

公开(公告)日：2001-09-18

申请号：US09356092

申请日：1999-07-16

Applicant: Alexander Lifson

Inventor： Alexander Lifson

IPC: F03C200

CPC classification number: F04C27/005 ,  F04C18/0215

Abstract: A scroll compressor includes back-pressure chamber seals which are mounted eccentrically relative to a shaft rotational axis. Because of the seal eccentricity, the back chamber force, which prevents fixed and orbiting scroll separation, also acts eccentrically. The eccentric back chamber force creates an overturning moment. The direction of eccentricity is selected such that this overturning moment counteracts the scroll tipping moment of the tangential gas force. Therefore, the back chamber force and thrust force between the non-orbiting and orbiting scrolls are minimized. Also the back chamber area between the seals is reduced. The reduction of thrust force minimizes scroll wear and reduces friction, while back chamber area reduction frees up additional space in the scroll environment which can be utilized for other purposes.

Abstract translation: 涡旋压缩机包括相对于轴旋转轴线偏心安装的背压室密封件。 由于密封偏心，防止固定和绕动涡旋分离的后室力也偏心地作用。 偏心的后室力产生翻转时刻。 选择偏心方向使得该倾覆力矩抵消切向气体力的滚动倾翻力矩。 因此，非轨道和绕动涡卷之间的后室力和推力被最小化。 密封件之间的后室区也减小了。 推力的减少使涡旋磨损最小化并减少摩擦，而后室面积减小可以释放可用于其他目的的涡旋环境中的额外空间。

公开(公告)号：US06210119B1

公开(公告)日：2001-04-03

申请号：US09092369

申请日：1998-06-05

Applicant: Alexander Lifson ,  Boris Karpman ,  John Douglas Lamb

Inventor： Alexander Lifson ,  Boris Karpman ,  John Douglas Lamb

IPC: F04B4900

CPC classification number: F04C28/28 ,  F04C2270/72 ,  F04C2270/86

Abstract: A method is disclosed for identifying when a compressor is being run in reverse due to improper wiring. In a preferred embodiment, sensors sense the condition of a refrigerant at the inlet line and a refrigerant at the outlet line. If an expected pressure differential is not seen, then the determination is made that the compressor is running in reverse. In embodiments the control system may shut down the compressor, provide an alarm, or reverse a phase of two of the three wires of a three phase power input to correct the rotation direction.

Abstract translation: 公开了一种用于识别由于布线不正确而使压缩机反向运行的方法。 在优选实施例中，传感器感测入口管路处的制冷剂的状态和出口管路处的制冷剂。 如果没有看到预期的压力差，则确定压缩机反向运行。 在实施例中，控制系统可以关闭压缩机，提供报警或反转三相电力输入的三条线中的两条线的相位，以校正旋转方向。

公开(公告)号：US06196816B1

公开(公告)日：2001-03-06

申请号：US09290331

申请日：1999-04-12

Applicant: Alexander Lifson ,  James W. Bush

Inventor： Alexander Lifson ,  James W. Bush

IPC: F01C102

CPC classification number: F04C29/042 ,  F04C29/0035

Abstract: Scroll compressors are provided with injection ports for injecting fluid from a supplemental source such as an economizer cycle or by-passing fluid through an unloader valve. The injection ports are formed in each of two compression chambers whose volume is being reduced towards a discharge port. Due to various design constraints, it is desirable that the injection ports have unequal characteristics. In some cases, it may be desirable to make the injection ports of different size, including width, depth, and length. In other applications, it may be desirable to locate the injection ports at different angular positions relative to compression chambers seal off from suction.

Abstract translation: 涡旋式压缩机设置有用于从补充源（例如节能器循环）或旁路流体通过卸载阀注入流体的注入口。 注入口形成在两个压缩室中的每一个中，这两个压缩室的体积朝向排出口减小。 由于各种设计限制，优选的是注入口具有不同的特性。 在一些情况下，可能希望制造不同尺寸的注射口，包括宽度，深度和长度。 在其他应用中，可能需要将注射口定位在相对于压缩室的不同角度位置处，从吸力密封。

公开(公告)号：US6042344A

公开(公告)日：2000-03-28

申请号：US114461

申请日：1998-07-13

Applicant: Alexander Lifson

Inventor： Alexander Lifson

IPC: F04C18/02 ,  F04B23/00 ,  F04B49/00 ,  F04C28/28 ,  F25B1/04

CPC classification number: F04C28/28 ,  F04C2270/72

Abstract: A unique method of operating a scroll compressor includes the steps of opening a capacity modulation unloader valve slightly before shutdown of the scroll compressor. By opening the unloader valve, the occurrence of unpowered reverse rotation is reduced or eliminated. Most preferably, the unloader valve communicates an economizer line to a suction inlet line.

Abstract translation: 一种操作涡旋式压缩机的独特方法包括在关闭涡旋压缩机之前略微打开容量调节卸载阀的步骤。 通过打开卸载阀，减少或消除了无动力反向旋转的发生。 最优选地，卸载阀将节能器管路连接到吸入口管线。

公开(公告)号：US10337507B2

公开(公告)日：2019-07-02

申请号：US13382379

申请日：2010-05-24

Applicant: Alexander Lifson ,  Michael F. Taras

Inventor： Alexander Lifson ,  Michael F. Taras

IPC: F04B39/08 ,  F04B49/03 ,  F04B49/06 ,  F04B49/22 ,  F04B49/035 ,  F04B1/04

Abstract: A reciprocating compressor includes a cylinder block, a cylinder head, and a bypass unloader valve assembly. The cylinder block has a cylinder disposed therein. The cylinder head is secured to the cylinder block overlying the cylinder and has a suction plenum and a discharge plenum in selective fluid communication with the cylinder. The bypass unloader valve assembly is in operable communication with the cylinder head and is responsive to control signals to rapid cycle to allow for fluid communication of a refrigerant between the discharge plenum and the suction plenum.

公开(公告)号：US09890982B2

公开(公告)日：2018-02-13

申请号：US13057945

申请日：2009-07-22

Applicant: Alexander Lifson ,  Michael F. Taras

Inventor： Alexander Lifson ,  Michael F. Taras

IPC: F25B49/00 ,  F25B49/02

CPC classification number: F25B49/025 ,  F25B2500/13 ,  F25B2600/0253 ,  Y02B30/741

Abstract: A variable speed electric drive for use in refrigerant systems includes an electric motor for driving an associated component at a variable speed that is a function of an operating frequency of the motor; and a control for supplying alternating discrete drive frequencies to the electric motor to provide a continuously variable speed drive of the associated component. The control cycles the drive frequency to the electric motor among the at least two discrete frequencies so that the variable average resultant speed at which the associated component is driven is a function of a combination of the selected at least two discrete frequencies.

公开(公告)号：US09677788B2

公开(公告)日：2017-06-13

申请号：US13322954

申请日：2010-05-26

Applicant: Alexander Lifson ,  Mark J. Perkovich

Inventor： Alexander Lifson ,  Mark J. Perkovich

IPC: F25B1/10 ,  F25B41/04

CPC classification number: F25B1/10 ,  F25B41/043 ,  F25B2400/0401 ,  F25B2400/13 ,  F25B2600/2501 ,  F25B2600/2509

Abstract: A refrigerant system capable of operating at multiple capacity modes includes an evaporator, a multi-stage compressor assembly, a first fluid flow path, a second fluid flow path, a first valve, and a second valve. The multi-stage compressor assembly has a first stage and a second stage. The first fluid flow path extends from the evaporator to the first stage of the multi-stage compressor assembly. The second fluid flow path connects to the first fluid flow path and to the multi-stage compressor assembly between the first stage and the second stage.

公开(公告)号：US09494352B2

公开(公告)日：2016-11-15

申请号：US12279075

申请日：2006-07-31

Applicant: Alexander Lifson ,  Jason D. Scarcella

Inventor： Alexander Lifson ,  Jason D. Scarcella

IPC: F25B41/00 ,  F25B41/04 ,  F25B49/02

CPC classification number: F25B41/043 ,  F25B49/02 ,  F25B2400/01 ,  F25B2500/26 ,  F25B2500/28 ,  F25B2600/02 ,  F25B2600/0261 ,  F25B2600/111 ,  F25B2600/2517 ,  Y02B30/743

Abstract: A suction modulation valve is throttled when conditions in a refrigerant system indicate that an undesirable amount of liquid refrigerant might otherwise be delivered to the compressor. As an example, the throttling would occur at start-up, among other conditions. Throttling the suction modulation valve reduces the amount of refrigerant reaching the compressor and thus ensures that any liquid refrigerant would be likely “boiled off” before raising any problems in the compressor. Other control steps can also be performed to alleviate flooded compressor operation with liquid refrigerant. Such steps, for example, can include actuating heaters, discharge valve throttling, by-passing refrigerant from an intermediate compression point back to suction, controlling the speed of the condenser fan can be performed independently or in combination including the suction modulation valve throttling.

Abstract translation: 当制冷剂系统中的条件指示不希望量的液体制冷剂可能被输送到压缩机时，抽吸调节阀被节流。 作为一个例子，节流将发生在启动时以及其他条件。 调节吸入调节阀减少到达压缩机的制冷剂量，从而确保任何液体制冷剂在引起压缩机中的任何问题之前都可能“沸腾”。 还可以执行其他控制步骤以减轻用液体制冷剂的淹没的压缩机操作。 例如，这样的步骤可以包括致动加热器，排出阀节流，将制冷剂从中间压缩点旁通回到吸入，控制冷凝器风扇的速度可以独立地或组合地包括抽吸调节阀节流来执行。

公开(公告)号：US08925336B2

公开(公告)日：2015-01-06

申请号：US12918233

申请日：2008-02-19

Applicant: Alexander Lifson ,  Michael F. Taras

Inventor： Alexander Lifson ,  Michael F. Taras

IPC: F25B41/00 ,  F25B49/00 ,  F25B7/00 ,  F25B39/04 ,  F25B41/04 ,  F25B6/04 ,  F25B49/02

CPC classification number: F25B41/04 ,  F25B6/04 ,  F25B49/02 ,  F25B2400/0403 ,  F25B2400/22 ,  F25B2600/11

Abstract: A refrigerant system operates in an environment defined by three distinct temperature levels, such as, for instance, the outdoor ambient temperature level, the indoor temperature level and the refrigeration temperature level. The refrigerant system is provided with an air-to-refrigerant heat exchanger located within the general indoor environment and connected to receive the flow of refrigerant from a heat rejection heat exchanger. The air-to-refrigerant heat exchanger gives off heat to the indoor air and in the process further cools the refrigerant flowing to an expansion device to thereby increase the cooling effect provided by an evaporator to the refrigeration area. Provisions are also made to partially or entirely bypass the air-to-refrigerant heat exchanger and/or the heat rejection heat exchanger, on a selective basis.

Abstract translation: 制冷剂系统在由三个不同的温度水平（例如室外环境温度水平，室内温度水平和制冷温度水平）限定的环境中操作。 制冷剂系统设置有位于一般室内环境内并连接以接收来自排热热交换器的制冷剂流的空气 - 制冷剂热交换器。 空气 - 制冷剂热交换器向室内空气发热，并且在该过程中进一步冷却流到膨胀装置的制冷剂，从而将由蒸发器提供的冷却效果提高到制冷区域。 还有选择地进行部分地或完全地旁路空气 - 制冷剂热交换器和/或排热热交换器。