公开(公告)号：US6105378A

公开(公告)日：2000-08-22

申请号：US152548

申请日：1998-09-14

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F04C28/10 ,  F04C28/16 ,  F04C29/04 ,  F04C29/12 ,  F25B1/047 ,  F25B49/02 ,  F04B23/00 ,  F01C1/16

CPC分类号： F04C29/042 ,  F04C28/10 ,  F04C28/16 ,  F04C29/122 ,  F25B1/047 ,  F25B49/022 ,  F25B2339/0242 ,  F25B2400/075 ,  F25B2400/13 ,  F25B2400/23

摘要： A helical-screw rotary compressor having a twin rotor configuration or a multi-rotor (i.e., at least three) configuration with defined compressor induction and discharge ends has at least one unloader piston disposed at said compressor discharge end. The unloader pistons being opened and closed in fine discrete steps by microprocessor controlled stepping motors which drive linear actuators

摘要翻译： 具有双转子结构或具有限定的压缩机感应和排出端的多转子（即至少三个）构型的螺旋螺杆式旋转式压缩机具有至少一个卸载器活塞，其设置在所述压缩机排出端。 卸载器活塞通过微处理器控制的步进电机以微小的离散步骤打开和关闭，驱动线性致动器

公开(公告)号：US5839886A

公开(公告)日：1998-11-24

申请号：US644744

申请日：1996-05-10

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F04B39/02 ,  F04B41/06 ,  F25B1/10 ,  F25B13/00 ,  F25B31/00 ,  F04B3/00

CPC分类号： F25B31/002 ,  F04B39/0207 ,  F04B41/06 ,  F25B1/10 ,  F25B13/00 ,  F25B2400/075 ,  F25B2400/13

摘要： A primary compressor and a booster compressor connected in series is presented. A first conduit connects the low side of a heating/cooling or refrigeration system to the inlet of the booster compressor, the outlet of the booster compressor and the inlet of the primary compressor. A second conduit connects the outlet of the primary compressor to the high side of the system. The first conduit includes a check valve for closing or opening the connection between the first conduit and the outlet of the booster compressor. A sump conduit is positioned near the bottom of the primary and booster compressors to allow lubricant to flow from the booster compressor to the primary compressor.

摘要翻译： 介绍了串联连接的主压缩机和增压压缩机。 第一导管将加热/制冷或制冷系统的低侧连接到增压压缩机的入口，增压压缩机的出口和主压缩机的入口。 第二导管将主压缩机的出口连接到系统的高侧。 第一管道包括用于关闭或打开第一管道和增压压缩机出口之间的连接的止回阀。 一个储槽导管位于主和增压压缩机的底部附近，以允许润滑剂从增压压缩机流到主压缩机。

公开(公告)号：US5642992A

公开(公告)日：1997-07-01

申请号：US550253

申请日：1995-10-30

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F04C18/08 ,  F04C18/16

CPC分类号： F04C18/084 ,  F04C18/165

摘要： A compressor in accordance with the present invention includes a male rotor which is axially aligned with and in communication with two female rotors. The male rotor is driven by a motor, in other words the male rotor is the drive rotor. The male rotor has a plurality of lobes which intermesh with a plurality of flutes on each of the female rotors. The male rotor comprises an inner cylindrical metal shaft with an outer composite material ring mounted thereon. The ring includes the lobes of the male rotor integrally depending therefrom. The lobes of the male rotor being comprised of a composite material allows positioning of the female rotors at a small clearance from the male drive rotor. This clearance is small enough that the liquid refrigerant itself provides sufficient sealing, cooling and lubrication. The positioning of the female rotors on opposing sides of the male rotor balances the radial loading on the male rotor thereby minimizing radial bearing loads. The interface velocity between the male and female rotors during operation is low, whereby damage suffered as a result of lubrication loss is reduced. The compressor includes a housing having an inlet housing portion, a main housing portion and a discharge housing portion. An induction side plate and a discharge side plate are mounted on the male rotor. The outside diameter of the induction plate is equal to the root diameter of the male rotor. The outside diameter of the discharge plate is equal to the crest diameter of the male rotor. These plates serve two purposes, to secure the male rotor components and to equalize suction pressure at both ends of the male rotor, thereby virtually eliminating the thrust loads. Discharge porting is defined in the discharge housing portion wherein trap pocket relief is provided.

摘要翻译： 根据本发明的压缩机包括与两个母转子轴向对准并与之连通的公转子。 阳转子由电动机驱动，换句话说，公转子是驱动转子。 阳转子具有多个凸角，其与每个阴转子上的多个凹槽相互啮合。 阳转子包括内圆柱形金属轴，其上安装有外复合材料环。 环包括与其一体地悬挂的阳转子的叶。 阳转子的凸起由复合材料构成，允许阴转子与阳驱动转子间隔很小的位置。 该间隙足够小，使得液体制冷剂本身提供足够的密封，冷却和润滑。 阴转子在阳转子的相对侧上的定位平衡了阳转子上的径向负载，从而使径向轴承负载最小化。 在运行中，公转轮与转子之间的界面速度较低，因此减少了由于润滑损失而造成的损坏。 压缩机包括具有入口壳体部分，主壳体部分和排出壳体部分的壳体。 感应侧板和排出侧板安装在阳转子上。 感应板的外径等于公转子的根直径。 排出板的外径等于公转子的峰值直径。 这些板具有两个目的，用于固定阳转子部件并使雄转子的两端的吸入压力相等，从而实际上消除了推力负载。 放电端口被限定在放电容纳部分中，其中提供陷阱袋释放。

公开(公告)号：US5065591A

公开(公告)日：1991-11-19

申请号：US646021

申请日：1991-01-28

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F25B5/02 ,  F25B49/02 ,  F25D29/00

CPC分类号： F25B49/022 ,  F25B5/02 ,  F25D29/00 ,  F25B2400/075 ,  F25B2400/0751 ,  F25B2400/22 ,  F25B2500/06 ,  F25D2700/12

摘要： A refrigeration system includes a rack or bank of compressors located in parallel and feeding a common condenser. Liquid refrigerant from the condenser is supplied to a plurality of evaporators located in parallel and feeding a common suction manifold. The suction manifold is connected to the compressors and contains a valve for selectively isolating one or more compressors and evaporators whereby the isolated compressor acts as a satellite compressor and the isolated evaporators are operated at a lower temperature than the other evaporators.

摘要翻译： 制冷系统包括平行定位并供给公共冷凝器的一个或多个压缩机组。 来自冷凝器的液体制冷剂被供给到并联设置的多个蒸发器，并且供给共同的抽吸歧管。 吸入歧管连接到压缩机并且包含用于选择性地隔离一个或多个压缩机和蒸发器的阀，由此隔离的压缩机用作卫星压缩机，并且隔离的蒸发器在比其他蒸发器低的温度下操作。

公开(公告)号：US4899555A

公开(公告)日：1990-02-13

申请号：US353981

申请日：1989-05-19

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F25B1/00 ,  F25B1/047 ,  F25B5/04 ,  F25B31/00 ,  H02K9/00

CPC分类号： F25B31/006 ,  F25B5/04 ,  F25B2400/13 ,  F25B2400/23

摘要： Gaseous refrigerant is supplied from a flash tank economizer to cool the motor of a hermetic or semi-hermetic compressor when there is a sufficient flow available. When the flow becomes too small, liquid refrigerant is supplied to the shell of the compressor for cooling the motor.

摘要翻译： 当存在足够的流动时，气体制冷剂从闪蒸罐节能器供应以冷却密封或半封闭式压缩机的电动机。 当流量变得太小时，液体制冷剂被供给到用于冷却马达的压缩机壳体。

公开(公告)号：US4787211A

公开(公告)日：1988-11-29

申请号：US863593

申请日：1986-05-15

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F04B41/06 ,  F04B49/00 ,  F25B1/10 ,  F25B5/00 ,  F25B41/04 ,  F25B49/02 ,  F25B7/00

CPC分类号： F25B5/00 ,  F25B1/10 ,  F25B41/04 ,  F25B49/022 ,  F25B2400/075 ,  F25B2400/13 ,  F25B2400/22 ,  F25B2600/021 ,  F25B41/043 ,  F25B5/02 ,  Y02B30/741

摘要： There is disclosed a refrigeration system employing multi-stage compressors, several unique modes of operation thereof, a sub-cooler/economizer for sub-cooling the condensed refrigerant prior to vaporization in the evaporator, as well as an improved expansion valve arrangement for controlling second stage discharge temperature, another valve arrangement for controlling economizer liquid discharge temperature, an interstage intercooler for use in a hot water system, a satellite compressor arrangement for ultra-low temperature applications, and an improved liquid-suction heat exchange arrangement.

公开(公告)号：US4497185A

公开(公告)日：1985-02-05

申请号：US536046

申请日：1983-09-26

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F04C18/16 ,  F25B1/047 ,  F25B31/00 ,  F25B43/02

CPC分类号： F25B1/047 ,  F04C18/16 ,  F25B31/004

摘要： Where a helical screw compressor gas or vapor working fluid is not too soluble in the compressor lubricant for compression process cooling, such lubricant after separation from the working fluid and cooled to as a low a temperature as possible and operating at as high a pressure as possible, is fed to an atomizing nozzle and injected into the inlet end of the compressor. This produces a cloud type blanket of cool atomized droplets uniformly dispersed within the suction vapor or gas allowing the highest possible rate of heat transfer to occur during the compression process and achieving the highest possible isothermal efficiency in a gas compression system or operation near vapor saturation values in a refrigeration vapor compression system while avoiding large hydraulic losses in the compressor. Working fluids such as helium, air, and ammonia may provide extremely high superheated gas or vapor at the compressor inlet.

摘要翻译： 螺旋压缩机气体或蒸汽工作流体在压缩过程冷却的压缩机润滑剂中不太溶解时，这种润滑剂在与工作流体分离后被冷却至尽可能低的温度并且尽可能高的压力下操作 被送入雾化喷嘴并喷射到压缩机的入口端。 这产生了均匀分散在吸入蒸气或气体中的冷雾化液滴的云层，允许在压缩过程期间发生最高可能的传热速率，并且在气体压缩系统或近似蒸汽饱和值下的操作中实现最高的等温效率 同时避免压缩机中的大的水压损失。 工作流体如氦气，空气和氨可以在压缩机入口处提供极高的过热气体或蒸气。

公开(公告)号：US4332144A

公开(公告)日：1982-06-01

申请号：US247968

申请日：1981-03-26

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F04B49/22 ,  F25B1/00 ,  F25B49/02 ,  F25B13/00

CPC分类号： F25B49/02 ,  F04B49/225 ,  F25B1/00 ,  F25B2400/13 ,  F25B2600/0261

摘要： Scavenging is applied to a conventional refrigeration cycle to return most of the energy normally remaining in a warm condensed liquid to the cycle. This permits considerably more energy to be picked up in the evaporator of the cycle than under conventional practice. The concept is applicable to any type positive displacement compressor where an intake of evaporator generated gas can be trapped in the compressor, with the scavenged gas then added prior to mechanical compression. The concept is particularly applicable to reciprocating compressor type heat pump systems.

摘要翻译： 清除被应用于传统的制冷循环，以将通常保留在温冷凝液体中的大部分能量返回到循环中。 这允许在循环的蒸发器中比在常规实践中相当多的能量被吸收。 该概念适用于任何类型的容积式压缩机，其中蒸发器产生的气体的入口可以被捕获在压缩机中，然后在机械压缩之前加入清除的气体。 该概念特别适用于往复式压缩机式热泵系统。

公开(公告)号：US4242872A

公开(公告)日：1981-01-06

申请号：US970789

申请日：1978-12-18

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F24D11/00 ,  F24D11/02 ,  F24F3/00 ,  F24J3/02 ,  F25B27/00

CPC分类号： F24F3/001 ,  F24D11/003 ,  F24D11/0221 ,  F24D11/0264 ,  Y02B10/20 ,  Y02B10/70 ,  Y02B30/126

摘要： A solar-assisted multiple source and multiple sink heat pump system for use in residential homes includes a solar/air coil mounted in the attic of the residential home and selectively open to the attic interior with the attic roof bearing a solar window with selective shield permitting the attic solar space to constitute a passive solar collector. The solar/air coil is positioned within duct work which selectively opens to the attic interior or the outside air to permit thermal energy pick up from the attic solar space or outside air or wasting of heat thereto. The inside air coil is also mounted in a separate duct work within the attic shielded from the attic interior but selectively open thereto and to and from the building interior beneath the attic for adding heat to the building interior or removing the same. One or more thermal storage tanks may constitute heat and cold sinks. Energy amplified by the heat pump may be delivered to inside air, a domestic hot water heater within the building, hydronic heating system water within the building space to be conditioned, the storage system tank media, or alternatively discharged to the outside air through the solar/outside air coil in the case of net requirement for rejection to ambient through the heat pump system. Direct room heating from the solar space or cooling by outside air flow is achieved without heat pump operation, and free-wheeling to and from storage media is provided.

摘要翻译： 用于住宅的太阳能辅助多源和多水槽热泵系统包括安装在住宅的阁楼中的太阳能/空气线圈，并且选择性地向阁楼内部开放，顶板具有带有选择性屏蔽允许的太阳窗 阁楼太阳能空间构成被动太阳能收集器。 太阳能/空气线圈被定位在管道工作中，其选择性地打开到阁楼内部或外部空气，以允许热能从阁楼太阳能空间或外部空气拾取或者浪费热量。 内部空气盘管还安装在与阁楼内部屏蔽的阁楼内的单独的管道工作中，但是选择性地向其敞开，并且朝向和离开阁楼下方的建筑物内部，以将热量加热到建筑物内部或者移除该建筑物内部。 一个或多个储热罐可以构成热和冷水槽。 由热泵放大的能量可以传送到内部空气，建筑物内的家用热水器，液体循环加热系统在待调节的建筑空间内的水，储存系统罐介质，或者通过太阳能排放到外部空气 在通过热泵系统排除环境的净需求的情况下，外部空气盘管。 在没有热泵操作的情况下实现来自太阳能空间的直接室内加热或通过外部空气流的冷却，并且提供到和从存储介质的再循环。

公开(公告)号：US4222716A

公开(公告)日：1980-09-16

申请号：US44433

申请日：1979-06-01

申请人： David N. Shaw

发明人： David N. Shaw

IPC分类号： F01C20/12 ,  F04B49/02

CPC分类号： F01C20/125

摘要： A helical screw rotary compressor or expander rotatably mounts intermeshed helical screw rotors within intersecting bores of a casing. An axially extending recess provided within the barrel portion of the casing in open communication with the bore bears a slide valve member whose inner face is complementary to the envelope of the casing. The slide valve member controls communication between the working chamber defined by the rotors and the casing to the outlet port and bears means at the end in communication with the outlet port for sensing the closed thread pressure adjacent to the end of the slide valve member closing off the outlet port. Comparison of that closed thread pressure to the outlet port pressure permits controlled shifting of the slide valve member to prevent overcompression and undercompression, when the unit acts as a compressor, or underexpansion or overexpansion when the unit acts as an expander. The slide valve member carries a bore parallel to its longitudinal axis which bears a cylindrical volume capacity control valve body which shifts to vary flow through axially spaced channels, selectively communicating the working fluid inlet to the bores bearing the intermeshed helical screw rotors. The slide valve member and the volume capacity control valve body carried thereby are independently movable.

摘要翻译： 螺旋式旋转式压缩机或膨胀机可旋转地将相互啮合的螺旋转子安装在套管的相交孔内。 设置在壳体的与筒体开放连通的筒体部分内的轴向延伸的凹部具有滑动阀构件，其内表面与壳体的外壳互补。 滑阀构件控制由转子限定的工作室和出口到壳体之间的连通，并且在与出口连通的端部处承载装置，用于感测与滑阀构件的端部相邻的闭合螺纹压力关闭 出口口。 将该闭合螺纹压力与出口压力进行比较允许滑阀构件的控制移位，以防止当该单元用作压缩机时过压和欠压，或者当该单元用作膨胀机时，其不足或过度膨胀。 滑阀构件承载平行于其纵向轴线的孔，该孔承载圆柱体积容量控制阀体，其移动以通过轴向间隔开的通道改变流动，将工作流体入口选择性地连通到承载相互啮合的螺旋转子的孔。 滑动阀构件和由此承载的容积容积控制阀体独立地可移动。