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公开(公告)号：US4678406A
公开(公告)日：1987-07-07
申请号：US855676
申请日：1986-04-25
CPC分类号： F04C28/125
摘要： An axial flow helical screw compressor with a slide valve and slide stop mounted end to end in communication with the intermeshing rotors has means for changing the volume ratio during operation by stepwise movement of the slide stop and for changing the capacity during operation in infinitely variable fashion, both in response to system operating conditions. In the event of interference between the movements of the slide stop and slide valve, the components are designed so that the movements of the slide stop overpowers that of the slide valve.
摘要翻译： 具有滑动阀和滑动止动件的轴向流螺旋式螺杆压缩机以与啮合转子连通的方式安装在一起，具有用于通过滑动止动件的逐步移动来改变操作期间的体积比并且以无限可变的方式改变操作期间的容量的装置 ，都是响应系统运行条件。 在滑块和滑阀的运动之间发生干涉的情况下，部件被设计成使得滑动止动件的运动超过滑阀的运动。
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公开(公告)号：US4465446A
公开(公告)日：1984-08-14
申请号：US493484
申请日：1983-05-11
申请人： Paul Nemit, Jr. , Joseph W. Pillis
发明人： Paul Nemit, Jr. , Joseph W. Pillis
CPC分类号： F16C19/54 , F01C21/02 , F01C21/102 , F04C29/0021 , F16C2360/43
摘要： A radial and thrust bearing mounting particularly adapted for a helical screw type compressor, is provided in which the radial load is isolated from the thrust load to prevent the thrust bearing from carrying any substantial radial load, and in which adjustment of the axial discharge end clearance between the faces of the rotors and the discharge end of the housing cover is provided.
摘要翻译： 提供一种特别适用于螺旋式压缩机的径向和推力轴承安装件，其中径向载荷与推力载荷隔离，以防止止推轴承承受任何显着的径向载荷，并且其中调节轴向排出端隙 提供转子的表面和壳体盖的排出端之间。
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公开(公告)号：US08287248B2
公开(公告)日：2012-10-16
申请号：US12646765
申请日：2009-12-23
CPC分类号： F04C18/16 , F04C28/125 , F04C2270/58
摘要： A system is provided for maintaining the position of a valve in a compressor. The valve includes a valve body connected to a piston in a cylinder by a shaft. The valve body is positioned in the discharge outlet of the compressor based on the location of the piston in the cylinder. The system maintains the position of the valve body in response to a movement of the piston by permitting fluid to flow from a fluid source through the piston and into a chamber of the cylinder to urge the piston back to its initial position in the cylinder.
摘要翻译： 提供一种用于维持压缩机中阀的位置的系统。 阀包括通过轴连接到气缸中的活塞的阀体。 阀体基于活塞在气缸中的位置而位于压缩机的排出口中。 系统通过允许流体从流体源流过活塞并流入气缸的腔室来维持阀体的位置以响应于活塞的运动，以将活塞推回到其在气缸中的初始位置。
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4.发明授权公开(公告)号：US06409490B1
公开(公告)日：2002-06-25
申请号：US09864234
申请日：2001-05-25
IPC分类号： F04C1816
CPC分类号： F04C28/125 , F01C21/02 , F04C18/16
摘要： In a screw compressor, guide bushings are mounted within bores for the bearings which support rotor shafts for the compressor. First bushings are provided at an inlet casing of the compressor and provide guidance for a slide stop and second bushings are provided in an outlet casing of the compressor to provide guidance for a slide valve. The bushings are also mounted to the inlet and outlet casings to provide centering for two sections of the compressor rotor housing. In one embodiment the first and second bushings provide guidance for a slide valve.
摘要翻译： 在螺杆式压缩机中，引导衬套安装在用于承载压缩机的转子轴的轴承的孔内。 第一衬套设置在压缩机的入口壳体处，并为滑动止挡提供引导，并且第二衬套设置在压缩机的出口壳体中，以为滑阀提供引导。 衬套也安装在入口和出口壳体上，以为压缩机转子壳体的两个部分提供定心。 在一个实施例中，第一和第二衬套为滑阀提供引导。
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公开(公告)号：US08899942B2
公开(公告)日：2014-12-02
申请号：US13817717
申请日：2011-09-14
IPC分类号： F04B49/035 , F04C28/12 , F04C18/16 , F04C28/26 , F04C2/18
CPC分类号： F04C28/12 , F04C2/18 , F04C18/16 , F04C28/125 , F04C28/26
摘要： A system and method for controlling the volume ratio of a compressor is provided. The system can use a port (88) or ports in a rotor cylinder to bypass vapor from the compression chamber to the discharge passage of the compressor. A control valve (90) can be used to open or close the port or ports to obtain different volume ratios in the compressor. The control valve (90) can be moved or adjusted by one or more valves that control a flow of fluid to the valve. A control algorithm can be used to control the one or more valves to move the control valve to obtain different volume ratios from the compressor. The control algorithm can control the one or more valves in response to operating parameters associated with the compressor.
摘要翻译： 提供了一种用于控制压缩机的体积比的系统和方法。 该系统可以使用端口（88）或转子气缸中的端口来将蒸气从压缩室旁通到压缩机的排放通道。 可以使用控制阀（90）来打开或关闭端口以在压缩机中获得不同的体积比。 控制阀（90）可以通过一个或多个阀来移动或调节，该阀控制流体流向阀。 可以使用控制算法来控制一个或多个阀来移动控制阀以获得与压缩机不同的体积比。 控制算法可以响应于与压缩机相关联的操作参数来控制一个或多个阀。
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公开(公告)号：US08641395B2
公开(公告)日：2014-02-04
申请号：US12752959
申请日：2010-04-01
申请人： Paul Nemit, Jr.
发明人： Paul Nemit, Jr.
IPC分类号： F04C18/00
CPC分类号： F04C18/16 , F04C28/12 , F04C29/0021 , Y10T137/86718
摘要： A system is provided for controlling the balance piston pressure in a screw compressor. The system can use the slide valve of the compressor as a valve to control the flow of fluid from a fluid source to the balance piston. When the slide valve prevents direct flow between the fluid source and the balance piston, an alternate path is used to provide fluid at a reduced pressure to the balance piston. The reduced pressure fluid is obtained by passing the fluid from the fluid source through an orifice to lower the fluid pressure.
摘要翻译： 提供一种用于控制螺杆式压缩机中的平衡活塞压力的系统。 该系统可以使用压缩机的滑阀作为阀来控制流体从流体源到平衡活塞的流动。 当滑阀阻止流体源和平衡活塞之间的直接流动时，使用一个替代的路径来将减压的流体提供给平衡活塞。 减压流体是通过使来自流体源的流体通过孔口来获得的，以降低流体压力。
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公开(公告)号：US08267116B2
公开(公告)日：2012-09-18
申请号：US11461079
申请日：2006-07-31
申请人： Paul A. Huber , Paul Nemit, Jr.
发明人： Paul A. Huber , Paul Nemit, Jr.
IPC分类号： F16K15/06
CPC分类号： F16K15/06 , F04C18/16 , F04C23/008 , F04C29/0092 , F16K15/033 , Y10T137/7862 , Y10T137/7904 , Y10T137/794 , Y10T137/8049 , Y10T137/86791
摘要： A backflow and strainer device is presented. The device is a unitary unit that prevents backflow of fluid gas in a compressor and prevents dirt particles and debris from entering the compressor, thereby damaging the components. A valve mechanism moves between an open position and a closed position to either allow or prevent fluid gas from flowing into the compressor. A mesh portion is disposed in the device to trap all dirt particles and debris to prevent them from entering the compressor. The valve mechanism responds to the higher and lower pressures associated with the operation and shutdown of compressors.
摘要翻译： 提出了一种回流和过滤装置。 该装置是防止压缩机中流体气体回流的整体单元，防止污垢颗粒和碎屑进入压缩机，从而损坏组件。 阀机构在打开位置和关闭位置之间移动，以允许或防止流体气体流入压缩机。 网格部分设置在设备中以捕获所有污垢颗粒和碎屑以防止它们进入压缩机。 阀机构响应与压缩机的操作和关闭相关联的更高和更低的压力。
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公开(公告)号：US09759469B2
公开(公告)日：2017-09-12
申请号：US14238340
申请日：2012-08-31
申请人： Paul Nemit, Jr.
发明人： Paul Nemit, Jr.
IPC分类号： C09K5/04 , F25B1/00 , F25D9/00 , F25B43/02 , H02P27/04 , H02P23/00 , F04B35/04 , G05B21/00 , F25B49/02 , F04C28/08 , F04B49/06 , F24F11/00 , F04C29/00
CPC分类号： F25B49/022 , F04B35/04 , F04B49/065 , F04B2203/0202 , F04B2203/0204 , F04B2203/0205 , F04C28/08 , F04C29/0085 , F04C2240/403 , F04C2240/81 , F04C2270/80 , F04C2270/86 , F24F11/85 , F25B2600/021 , Y02B30/741
摘要： A variable speed drive (VSD) can be used to vary the voltage-to-frequency ratio (V/f) supplied to a compressor motor of a heating, ventilation, air conditioning or refrigeration (HVAC&R) system to make the motor stronger or weaker to compensate for varying conditions in the HVAC&R system. The VSD and corresponding control system or algorithm can monitor an operating parameter of the HVAC&R system, such as the kW absorbed by the motor, and then raise or lower the V/f of the VSD to obtain the lowest possible power consumption from the motor.
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公开(公告)号：US08888466B2
公开(公告)日：2014-11-18
申请号：US13454308
申请日：2012-04-24
申请人： Paul Nemit, Jr.
发明人： Paul Nemit, Jr.
摘要： A compressor including a compression mechanism configured and positioned to receive vapor from an intake passage and provide compressed vapor to a discharge passage. An opening is positioned in the compression mechanism in fluid communication with the discharge passage. A valve has an aperture formed therein, the aperture configured and positioned in fluid communication with a passageway to provide a path for a pressurized vapor flow to a first chamber and a first piston without mixing with vapor in the discharge passage. A second chamber is in fluid communication with a second piston and the discharge passage, the first piston and the second piston of the valve configured to move together. First piston and second piston movement are controllable in response to predetermined conditions to maintain the magnitude of pressure of the compression mechanism immediately upstream of the opening at substantially the same pressure magnitude at the discharge passage.
摘要翻译： 一种压缩机，包括压缩机构，所述压缩机构构造和定位成从进气通道接收蒸气并将压缩蒸汽提供到排出通道。 开口位于与排出通道流体连通的压缩机构中。 阀具有形成在其中的孔，孔被构造和定位成与通道流体连通，以提供用于加压蒸汽流到第一室和第一活塞的路径，而不与排放通道中的蒸气混合。 第二室与第二活塞流体连通，并且阀的排出通道，第一活塞和第二活塞构造成一起移动。 第一活塞和第二活塞运动可响应于预定条件而被控制，以将压缩机构的压力的大小紧紧地保持在开口的上游处，在排放通道处以基本相同的压力大小。
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公开(公告)号：US07387498B2
公开(公告)日：2008-06-17
申请号：US10728157
申请日：2003-12-04
CPC分类号： F04C28/02 , F04B39/0027 , F04B41/06 , F04B49/065 , F04C18/16 , F04C28/08 , F04C29/061 , F04C29/068 , F04C2270/05
摘要： A system is provided for attenuating noise in at least two positive displacement compressors proximately located from each other for use with at least one heating or cooling system. A lead compressor and a lag compressor have a selectably controllable rotational speed and a selectably controllable phase of operation. A controller selectably controls the rotational speed and the phase of operation of each of the compressors. The controller controls the rotational speed of the compressors at a predetermined rotational speed that is substantially the same for each of the compressors. The controller controls the phase of operation of the compressors by shifting the phase of operation of the lag compressor so that an outlet pressure pulse operatively produced by the lag compressor is substantially evenly spaced between successive outlet pressure pulses operatively produced by the reference compressor.
摘要翻译： 提供了一种系统，用于衰减至少两个彼此近似定位的容积式压缩机中的噪声，以与至少一个加热或冷却系统一起使用。 引导压缩机和滞后压缩机具有可选择的可控旋转速度和可选择地可控的操作相位。 控制器可选地控制每个压缩机的转速和运行阶段。 控制器以对于每个压缩机基本上相同的预定转速来控制压缩机的转速。 控制器通过改变滞后压缩机的运行阶段来控制压缩机的运行阶段，使得由滞后压缩机可操作地产生的出口压力脉冲基本上均匀地间隔在由参考压缩机可操作地产生的连续出口压力脉冲之间。
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