公开(公告)号：US3936239A

公开(公告)日：1976-02-03

申请号：US492084

申请日：1974-07-26

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F04C28/00 ,  F01C1/16 ,  F03B20060101 ,  F04B37/12 ,  F04B39/06 ,  F04B49/02 ,  F04C18/16 ,  F04C28/12 ,  F04C28/26 ,  F04D20060101 ,  F16K20060101

CPC分类号： F04C28/125 ,  F05B2250/25

摘要： An axially shiftable slide valve member in a rotary, helical screw compressor carries a port which senses the pressure of the working fluid in the trapped volume just before uncovering of the closed thread to the discharge port and compares that pressure with the line pressure at the discharge port and shifts the slide valve member to balance the pressures and prevent overcompression or undercompression of the compressor. The screw compressor may be provided with two identical but oppositely oriented slide valve members on opposite sides of the intermeshed helical screws with one slide valve member controlling the capacity of the compressor and the other balancing the closed thread pressure at discharge with discharge line pressure. Compressor rotation may be reversed to eliminate the need for a reversing valve where the compressor operates in heat pump or reverse flow defrost refrigeration applications, with the two slide valves trading functions.

公开(公告)号：US07980836B2

公开(公告)日：2011-07-19

申请号：US12134389

申请日：2008-06-06

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F04C18/00 ,  F04C2/00

CPC分类号： F04C18/165 ,  F04C2230/60 ,  F04C2240/70 ,  Y10T29/49242

摘要： A multi-rotor compressor and method of manufacturing is provided. The compressor includes a housing with a plurality of identical planet rotors. The planet rotors are equally spaced apart at a fixed distance from a centerline. A single sun rotor is provided that is disposed to cooperate with the plurality of identical planet rotors in the compression of gas. The number and radial spacing of the plurality of identical planet rotors about said single sun rotor may be arranged in different configurations to change an output capacity parameter for said compressor.

摘要翻译： 提供了一种多转子压缩机及其制造方法。 压缩机包括具有多个相同行星转子的壳体。 行星转子在距中心线一定距离处相等间隔开。 提供单个太阳转子，其设置成在压缩气体时与多个相同的行星转子配合。 围绕所述单个太阳转子的多个相同的行星转子的数量和径向间隔可以以不同的构造布置以改变用于所述压缩机的输出容量参数。

公开(公告)号：US5911743A

公开(公告)日：1999-06-15

申请号：US807796

申请日：1997-02-28

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F04C18/16 ,  F04C23/00 ,  F04C28/08 ,  F25B1/047 ,  F25B11/02 ,  F25D31/00 ,  F25D17/02 ,  F25B43/02

CPC分类号： F04C28/08 ,  F04C18/165 ,  F04C23/00 ,  F25B1/047 ,  F25B11/02 ,  F25B2339/0242 ,  F25D31/002

摘要： An expansion/separation compressor system is presented for a multi-rotor compressor configuration. In accordance with the present invention the rotors are disposed in a shell having open and closed off portions for providing expansion, compression and separation. The closed off portions depend from or are attached to other suitable compressor structure including the induction or discharge plates. In an embodiment the expansion portion is comprised of a sliding valve. Separation is achieved when the flute and respective open shell portion expose the fluid to basic plenum pressure. The fluid is essentially removed by centrifugal force through the opening in the shell. The compressor is mounted to an evaporator and a control system is provided to regulate the temperature of water in the evaporator thereby controlling the rate of evaporation of liquid phase refrigerant in the evaporator. The liquid phase refrigerant is expanded between the rotors and respective shell portions to a desired volume. Further, the present invention presents foam generated from the liquid phase refrigerant to an opening in the shell at the induction side of the compressor for cooling, sealing and lubrication purposes. In accordance with the present invention the capacity of above described system can be varied without mechanical unloading.

摘要翻译： 提出了一种用于多转子压缩机配置的膨胀/分离压缩机系统。 根据本发明，转子设置在具有开放和关闭部分的壳体中，用于提供膨胀，压缩和分离。 封闭部分取决于或连接到包括感应或排放板的其他合适的压缩机结构。 在一个实施例中，膨胀部分包括滑阀。 当槽和相应的开口壳部分将流体暴露于基本的压力压力时，实现分离。 流体基本上通过离心力通过壳体中的开口去除。 压缩机安装在蒸发器上，并且提供控制系统以调节蒸发器中的水的温度，从而控制蒸发器中液相制冷剂的蒸发速率。 液相制冷剂在转子和相应的壳体部分之间膨胀至所需的体积。 此外，本发明提供从液相制冷剂产生的泡沫到用于冷却，密封和润滑目的的压缩机的感应侧的壳体中的开口。 根据本发明，可以在不进行机械卸载的情况下改变上述系统的容量。

公开(公告)号：US4495778A

公开(公告)日：1985-01-29

申请号：US580047

申请日：1984-02-14

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F24F11/02 ,  F25B49/02 ,  G05D23/19 ,  F25B1/00

CPC分类号： G05D23/1912 ,  F25B49/022

摘要： An air conditioning control system, for use with an air conditioning system having a variable-capacity compressor, varies the compressor loading in accordance with evaporator pressure at return air temperatures above an upper set point and fixes the compressor loading at 33% thereabouts when the return air temperature falls below the upper set point. If the temperature continues to fall, the compressor will be shut down at a lower set point at which the heating apparatus may be automatically and momentarily activated. The compressor will not again be activated until the temperature rises above the upper set point. The heating is deactivated as soon as the temperature rises above the lower set point.

摘要翻译： 与具有可变容量压缩机的空调系统一起使用的空调控制系统根据在高于上限设定点的回风温度下的蒸发器压力来改变压缩机负载，并且当返回时将压缩机负载固定在33％ 空气温度低于上限设定点。 如果温度持续下降，压缩机将在下限设定点关闭，加热装置可自动暂时启动。 压缩机将不会再被激活，直到温度升高到高于设定点上限。 一旦温度升高到较低的设定点以上，加热就会停用。

公开(公告)号：US4375156A

公开(公告)日：1983-03-01

申请号：US193496

申请日：1980-10-03

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F04C18/16 ,  F04C29/00 ,  F04C29/02 ,  F25B41/00

CPC分类号： F04C29/0007 ,  F04C29/023

摘要： A rotary helical screw compressor for a refrigeration system employing a condensable refrigerant comprises intermeshed rotors mounted for rotation by way of anti-friction bearings, within a hermetic housing. A lubricating oil miscible in liquid refrigerant is supplied to the compressor in a mass ratio of between 0.25 and 12%, by weight of solution. Vaporized working fluid at discharge pressure and bearing oil mist is permitted to seep through the anti-friction bearings in closed loops, from the discharge side of the machine towards the suction side, for effective lubrication. Thus, the refrigeration system is oil pump free, oil sump free, and oil filter free. Liquid refrigerant oil solution may be bled from the condenser and injected into the compression chamber defined partially by the intermeshed rotors at a point in the compression process where the compression chamber is cut off from suction and discharge sides of the compressor, for cooling the rotors.

摘要翻译： 用于使用可冷凝制冷剂的制冷系统的旋转螺旋式螺杆式压缩机包括在密封壳体内安装用于通过抗摩擦轴承旋转的相互啮合的转子。 以液体制冷剂混合的润滑油以按溶液重量计0.25％至12％的质量比供给压缩机。 排气压力下的汽化工作油和轴承油雾允许从机器的排放侧到吸力侧的闭环回流中渗透润滑轴承，以进行有效的润滑。 因此，制冷系统是无油泵，无油底壳，并且不含油过滤器。 液体制冷剂油溶液可以从冷凝器排出，并且在压缩过程中的压缩室被从压缩机的吸入和排出侧切断用于冷却转子的点处，被注入部分地由相互啮合的转子限定的压缩室中。

公开(公告)号：US4245476A

公开(公告)日：1981-01-20

申请号：US604

申请日：1979-01-02

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F24D11/02 ,  F25B1/10 ,  F25B13/00 ,  F25B30/02 ,  F25B30/06 ,  F25B27/00

CPC分类号： F25B13/00 ,  F24D11/0221 ,  F25B1/10 ,  F25B30/02 ,  F25B2313/025 ,  F25B2313/0292 ,  F25B2313/0293 ,  F25B2313/0294 ,  F25B2313/0314 ,  F25B2313/0315 ,  F25B2400/074 ,  F25B2400/13 ,  F25B2400/24 ,  F25B2600/02 ,  F25B2600/2501 ,  F25B2600/2509 ,  F25B2700/2111 ,  F25B30/06 ,  Y02B10/20 ,  Y02B10/70 ,  Y02B30/126

摘要： A multi-cylinder reciprocating compressor is automatically staged at low ambient temperature to improve refrigerant volume flow while facilitating subcooler operation and return of vaporized refrigerant from the subcooler to the inlet of the second stage cylinders of the compressor in the two stage mode. A solar evaporator substitutes for the outdoor coil when the solar heated storage tank temperature exceeds that of ambient. During staging mode, the wrist pins of the low side cylinders and the high side cylinder undergo proper load reversals, since intermediate suction pressure is applied to the wrist pin of the high side cylinders.

摘要翻译： 多缸往复式往复式压缩机在低环境温度下自动分级以提高制冷剂体积流量，同时促进过冷却器操作并使蒸发的制冷剂从二级冷却器返回到压缩机的第二级气缸入口。 当太阳能加热储罐温度超过环境温度时，太阳能蒸发器代替户外线圈。 在分段模式下，低侧气缸和高侧气缸的腕销经过适当的负载反转，因为中间吸入压力被施加到高侧气缸的腕针上。

公开(公告)号：US4220197A

公开(公告)日：1980-09-02

申请号：US601

申请日：1979-01-02

申请人： Donald D. Schaefer ,  David N. Shaw ,  Joseph A. M. Gagnon

发明人： Donald D. Schaefer ,  David N. Shaw ,  Joseph A. M. Gagnon

IPC分类号： B60H1/00 ,  B60H1/32 ,  F04C23/00 ,  F04C28/12 ,  F25B1/047 ,  F25B27/02 ,  B60H3/00

CPC分类号： F04C28/125 ,  B60H1/00007 ,  B60H1/3204 ,  F04C23/00 ,  F25B1/047 ,  F25B27/02

摘要： A compact, helical screw compressor/expander unit mounted in a vehicle and connected to the vehicle engine driven drive shaft has inlet and outlet ports and a capacity control slide valve and a pressure matching or volume ratio slide valve, respectively, for said ports. A refrigerant loop includes the compressor, a condenser mounted in the path of air flow over the engine and an evaporator mounted in a fresh air/cab return air flow duct for the occupant. Heat pipes thermally connect the cab air flow duct to the engine exhaust system which also bears the vapor boiler. Selectively operated damper valves control the fresh air/cab return air for passage selectively over the evaporator coil and the heat pipes as well as the exhaust gas flow over opposite ends of the heat pipes and the vapor boiler.

摘要翻译： 安装在车辆中并连接到车辆发动机驱动驱动轴的紧凑型螺旋式螺杆式压缩机/膨胀机单元分别具有用于所述端口的入口和出口以及容量控制滑阀和压力匹配或体积比滑阀。 制冷剂回路包括压缩机，安装在发动机空气流动路径中的冷凝器和安装在用于乘客的新鲜空气/驾驶室返回空气流动管道中的蒸发器。 热管将驾驶室空气流动管道连接到也带有蒸气锅炉的发动机排气系统。 选择性地操作的阻尼阀控制新鲜空气/驾驶室返回空气，用于选择性地通过蒸发器盘管和热管，以及在热管和蒸气锅炉的相对端上的废气流。

公开(公告)号：US4209998A

公开(公告)日：1980-07-01

申请号：US972151

申请日：1978-12-21

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F04C23/00 ,  F25B1/047 ,  F25B27/00 ,  F25B29/00 ,  F25B9/00 ,  F04B9/14

CPC分类号： F25B29/003 ,  F04C23/003 ,  F25B1/047 ,  F25B27/00

摘要： A closed loop refrigeration system such as an air source heat pump includes a hermetic screw compressor and a helical screw rotary expander connected to an electric induction drive motor. The closed loop refrigeration circuit permits an air source evaporator to constitute a heat source for supplying vaporized refrigerant to the compressor and expander, while both are mechanically coupled to the electric induction drive motor and with both driven as compression units. The air source evaporator feeds to slide valve controlled inlet ports of both the compressor and expander. Compressed vapor from both units passes to condenser coil(s) such as heating condensers to increase the system capacity under this mode.

摘要翻译： 诸如空气源热泵的闭环制冷系统包括连接到电感驱动电动机的密封螺杆式压缩机和螺旋式螺旋式旋转式膨胀机。 闭环制冷回路允许空气源蒸发器构成用于将蒸发的制冷剂供应到压缩机和膨胀器的热源，而两者都机械地联接到电感驱动电动机并且两者被驱动为压缩单元。 空气源蒸发器进给以滑动压缩机和膨胀器的控制入口端口。 来自两个单元的压缩蒸汽传递到冷凝器盘管，例如加热冷凝器，以增加该模式下的系统容量。

公开(公告)号：US4180986A

公开(公告)日：1980-01-01

申请号：US900025

申请日：1978-04-25

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F04C18/16 ,  F04C28/06 ,  F04C29/02 ,  F25B1/047 ,  F25B43/02 ,  F25B49/02

CPC分类号： F04C28/06 ,  F04C29/021 ,  F04C29/026 ,  F25B1/047 ,  F25B43/02 ,  F25B49/022 ,  F04C18/16 ,  F25B2400/22 ,  F25B41/043

摘要： A positive displacement compressor, such as a helical screw rotary compressor without capacity control element, is coupled in a refrigeration loop main line between the evaporator and an oil separator and upstream of the condensor. To unload the screw compressor at low evaporator load, any refrigerant discharging from the compressor is bypassed by a line connecting the suction and discharge sides of the screw compressor, and main line connection from the evaporator to the screw compressor is shut off such that the driven, unloaded screw compressor pulls oil from the separator through a restrictor and oil injection port and some refrigerant vapor which passes to the evaporator side through the screw compressor bypass line. As the evaporator pressure increases, the evaporator is connected through a restrictor within the main line to the screw compressor suction. As the evaporator load increases, normal operation returns, with the bypass line being closed and oil fed from the oil separator to the screw compressor injection port bypassing the restrictor for that oil line.

摘要翻译： 诸如不具有容量控制元件的螺旋式旋转式压缩机的容积式压缩机在蒸发器和油分离器之间的制冷回路主管线中并联在冷凝器的上游。 为了在低蒸发器负载下卸载螺杆式压缩机，从压缩机排出的任何制冷剂被连接螺杆式压缩机的吸入侧和排出侧的管线旁路，并且从蒸发器到螺杆式压缩机的主线连接被切断，使得被驱动 卸载的螺杆式压缩机通过限制器和注油口以及通过螺杆压缩机旁路管路传递到蒸发器侧的一些制冷剂蒸汽从分离器中抽出油。 当蒸发器压力增加时，蒸发器通过主管线内的限流器连接到螺杆式压缩机吸入口。 当蒸发器负载增加时，正常运行返回，旁路管路闭合，并从油分离器向螺旋压缩机注入口供油，旁路该油路的限流器。

公开(公告)号：US4148436A

公开(公告)日：1979-04-10

申请号：US806407

申请日：1977-06-14

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F04C18/16 ,  F25B1/047 ,  F25B13/00 ,  F25B27/00 ,  F25B29/00 ,  F25B30/02 ,  G05D23/00 ,  F25B1/10 ,  F25B27/02

CPC分类号： F25B1/047 ,  F25B13/00 ,  F25B29/003 ,  F25B30/02 ,  F04C18/16

摘要： A multi-cylinder reciprocating compressor is automatically staged at low ambient temperature to improve refrigerant volume flow while facilitating subcooler operation and return of vaporized refrigerant from the subcooler to the inlet of the second stage cylinders of the compressor in the two stage mode. A solar evaporator substitutes for the outdoor coil when the solar heated storage tank temperature exceeds that of ambient. During staging mode, the wrist pins of the low side cylinders and the high side cylinder undergo proper load reversals, since intermediate suction pressure is applied to the wrist pin of the high side cylinders.

摘要翻译： 多缸往复式往复式压缩机在低环境温度下自动分级以提高制冷剂体积流量，同时促进过冷却器操作并使蒸发的制冷剂从二级冷却器返回到压缩机的第二级气缸入口。 当太阳能加热储罐温度超过环境温度时，太阳能蒸发器代替户外线圈。 在分段模式下，低侧气缸和高侧气缸的腕销经过适当的负载反转，因为中间吸入压力被施加到高侧气缸的腕针上。