公开(公告)号：US4395880A

公开(公告)日：1983-08-02

申请号：US242453

申请日：1981-03-11

申请人： David M. Berchowitz

发明人： David M. Berchowitz

IPC分类号： F02G1/044 ,  F02G1/06

CPC分类号： F02G1/044 ,  F02G2244/50 ,  F02G2253/03 ,  F02G2254/30 ,  F02G2270/50 ,  Y10T74/19098 ,  Y10T74/1959

摘要： A mechanical device for effecting a phase change between the expansion and compression volumes of a double-acting Stirling engine uses helical elements which produce opposite rotation of a pair of crankpins when a control rod is moved, so the phase between two pairs of pistons is changed by +.psi. and the phase between the other two pairs of pistons is changed by -.psi.. The phase can change beyond .psi.=90.degree. at which regenerative braking and then reversal of engine rotation occurs.

摘要翻译： 用于实现双作用斯特林发动机的膨胀和压缩体积之间的相变的机械装置使用螺旋元件，当控制杆移动时，螺旋元件产生一对曲柄销的相反旋转，因此两对活塞之间的相位发生变化 通过+ psi，另外两对活塞之间的相位被-psi改变。 相位可以改变超过psi = 90°，在此时发生再生制动，然后发生反转。

公开(公告)号：US4382363A

公开(公告)日：1983-05-10

申请号：US270893

申请日：1981-06-05

申请人： Jeffrey S. Rauch

发明人： Jeffrey S. Rauch

IPC分类号： F02G1/043 ,  F02G1/04

CPC分类号： F02G1/0435

摘要： A free piston Stirling engine includes a hermetically sealed vessel enclosing a working space which is filled with a working gas such as helium. A displacer is mounted in the working space on a suspension apparatus for axial reciprocation to displace working gas back and forth sequentially through a heater, a regenerator, and a cooler to create a cyclic pressure wave which drives a power piston. The displacer is connected to a mounting flange fixed to the vessel by a bellows which permits the displacer to move axially. A diaphragm is connected to the mounting flange and seals an oil cavity whose sides are defined by the bellows. The top of the oil cavity is formed by a transverse wall in the displacer, in which is formed a cylinder which receives a stationary piston mounted on a spider in the oil cavity and fastened to the mounting flange. The axial motion of the displacer is accommodated by the bellows, and the distributed pressure forces of the working gas pressure wave are conducted through the diaphragm and fluid in the cavity to the displacer transverse wall. The volumetric displacement of fluid in the cavity caused by axial expansion and compression of the bellows is accommodated by a corresponding displacement of the cylinder relative to the fixed piston, so the volume in the cavity stays virtually constant and the only substantial stress to which the diaphragm is subjected is the displacement induced stress that enables the diaphragm to function as a centering spring, and not pressure induced stress.

摘要翻译： 一个自由活塞斯特林发动机包括一个封闭的工作空间的气密密封容器，其上装有工作气体如氦气。 置换器安装在用于轴向往复运动的悬挂装置上的工作空间中，以依次通过加热器，再生器和冷却器来回移动工作气体，以产生驱动动力活塞的循环压力波。 置换器通过允许置换器轴向移动的波纹管连接到固定到容器的安装凸缘。 隔膜连接到安装法兰上，并密封其侧面由波纹管限定的油腔。 油腔的顶部由置换器中的横向壁形成，其中形成有缸，其容纳安装在油腔中的蜘蛛上并固定到安装凸缘的固定活塞。 置换器的轴向运动由波纹管容纳，并且工作气体压力波的分布的压力通过隔膜和空腔中的流体传导到置换器横向壁。 由于波纹管的轴向膨胀和压缩引起的空腔中的流体的体积位移由圆柱体相对于固定活塞的相应位移来适应，因此腔体中的体积几乎保持不变，并且仅有明显的应力 受到的是位移引起的应力，使得隔膜能够用作定心弹簧，而不是压力引起的应力。

公开(公告)号：US4380902A

公开(公告)日：1983-04-26

申请号：US270892

申请日：1981-06-05

申请人： Nicholas G. Vitale

发明人： Nicholas G. Vitale

IPC分类号： F02G1/043 ,  F02G1/053 ,  F02G1/04

CPC分类号： F02G1/053 ,  F02G1/0435 ,  F02G2243/24

摘要： A diaphragm suspension system for a free piston Stirling engine includes a transverse wall across the cold end of the displacer. An upper diaphragm is attached to the displacer shell above the transverse wall, and a support diaphragm is attached at its center to a partition fixed to the engine vessel, and is attached at its peripheral edge to the lower end of the displacer. A lower oil cavity is defined between the transverse wall and the support diaphragm, and an upper oil cavity is defined between the upper diaphragm and the transverse wall. A cylinder is formed in the transverse wall communicating between the oil cavities, and a piston is disposed in the cylinder and is fixed to the partition. When the displacer moves, the piston remains stationary and compensates for the oil displacement caused by the support diaphragm flexing into and out of the oil cavity, so the support diaphragm experiences only or primarily displacement induced stress rather than pressure induced stress. The top oil cavity ensures that leakage past the piston will be equal in both directions, and also provides an additional spring effect to return the displacer toward its midstroke position.

摘要翻译： 用于自由活塞的隔膜悬架系统斯特林发动机包括穿过置换器的冷端的横向壁。 上隔膜附接到横向壁上方的置换器壳体，并且支撑隔膜在其中心附接到固定到发动机容器的分隔件上，并且在其周边附接到置换器的下端。 下部油腔被限定在横向壁和支撑膜片之间，上部油腔被限定在上部隔膜和横向壁之间。 缸体形成在连通在油腔之间的横向壁中，活塞设置在气缸中并固定在隔板上。 当置换器移动时，活塞保持静止并且补偿由支撑隔膜弯曲进入和流出油腔所引起的油位移，因此支撑隔膜仅经受或主要是位移诱发应力而不是压力引起的应力。 顶部油腔确保了通过活塞的泄漏在两个方向上相等，并且还提供了额外的弹簧效应以使置换器朝着其中间位置返回。

公开(公告)号：US4345442A

公开(公告)日：1982-08-24

申请号：US160306

申请日：1980-06-17

申请人： Richard A. Dorman

发明人： Richard A. Dorman

IPC分类号： F25B49/02 ,  H02K33/18 ,  F25B13/00 ,  F04B49/06

CPC分类号： H02K33/18 ,  F25B2400/073 ,  F25B49/025 ,  H02P21/00

摘要： A control system for controlling the operation of a reciprocating resonant free-piston variable stroke compressor of the type driven by electrodynamic linear motors wherein the spring-mass system of the compressor which is forced into vibration by the linear motor, is arranged to have a selectively variable mechanical resonant frequency generally centered on the power line frequency of the alternating current power source used to drive the linear motor. The control system provided by this invention variably controls the opening and closing of a gas spring control valve that in turn regulates the pressure of gas filled volumes selectively connected to a manifold vented by the valve. The volumes comprise the resilient gas springs for the resonant piston compressor. For this purpose, the control system comprises an alternating current sensor for deriving a sensed output signal representative of the magnitude and phase of the alternating current supplied to the linear reciprocating motor, a reciprocating piston displacement/velocity sensor for deriving a signal representative of the reciprocating free piston velocity, and an .alpha. angle detector responsive to the signal from the alternating current sensor and the piston velocity signal from the piston displacement/velocity sensor for comparing the phase of the alternating current supplied to the linear reciprocating motor to the reciprocating free resonant piston displacement/velocity and deriving an output .alpha. angle control signal that then is supplied to an RPC control logic circuit for the RCP heat pump. The RPC control logic circuit derives motor voltage control relays for controlling the supply voltage valve to the A-C coils of the linear motor.

摘要翻译： 用于控制由电动力线性电动机驱动的类型的往复式共振自由活塞可变行程压缩机的操作的控制系统，其中由线性电动机强制进入振动的压缩机的弹簧质量系统被布置成具有选择性地 可变机械谐振频率通常以用于驱动线性电动机的交流电源的电力线频率为中心。 由本发明提供的控制系统可变地控制气弹簧控制阀的打开和关闭，该气弹簧控制阀又调节选择性地连接到由阀排出的歧管的气体填充体积的压力。 这些体积包括用于谐振活塞式压缩机的弹性气弹簧。 为此，控制系统包括用于导出代表提供给线性往复运动马达的交流电流的大小和相位的感测输出信号的交流传感器，用于导出代表往复运动的信号的往复运动的位移/速度传感器 自由活塞速度和响应于来自交流传感器的信号和来自活塞位移/速度传感器的活塞速度信号的α角检测器，用于将提供给线性往复运动马达的交流电的相位与往复式自由谐振活塞 位移/速度，并导出输出角度控制信号，然后将其提供给用于RCP热泵的RPC控制逻辑电路。 RPC控制逻辑电路导出电机电压控制继电器，用于控制线性电机的A-C线圈的电源电压阀。

公开(公告)号：US4304411A

公开(公告)日：1981-12-08

申请号：US140969

申请日：1980-04-17

申请人： Donald F. Wilcock ,  Martin W. Eusepi

发明人： Donald F. Wilcock ,  Martin W. Eusepi

IPC分类号： F16J15/00 ,  F16J15/42 ,  F16J15/43 ,  F16J15/16

CPC分类号： F16J15/008 ,  F16J15/42 ,  F16J15/43

摘要： A magnetic/centrifugal-fluid seal comprising a rotating disk-like collar/vane surrounding a rotatable shaft journalled in a housing defined by close-fitting stationary members forming a cavity to accommodate the rotatable shaft and disk-like collar/vane. A magnetic fluid is retained in a close clearance magnetic gap region between the rotatable shaft and the stationary members and is magnetized by an external permanent magnet or electromagnet. At standstill or low-speed the magnetic fluid is retained by magnetic force in the close-clearance magnetic gap region formed by several sets of opposing pole-like teeth confronting the inner surfaces of the rotating disk-like collar/vane. By virtue of magnetic attraction the magnetic fluid can withstand a pressure drop between high and low pressure regions and thus effects a magnetic seal at standstill and low speeds. As the shaft rotates faster, the magnetic fluid is forced centrifugally from the magnetic seal region and becomes a rotating mass or pool of fluid at the circumferential rim of the disk-like collar/vane. The fluid then acts as a conventional centrifugal seal. When stopping or slowing down, a speed is reached where the magnetic/gravitational forces again dominate over the centrifugal forces and the magnetic fluid returns to the magnetic seal region.

摘要翻译： 一种磁/离心流体密封件，其包括围绕可旋转的轴的旋转圆盘状套环/叶片，所述旋转轴轴颈安装在壳体中，该壳体由形成空腔的紧密固定的构件限定，以容纳可旋转轴和盘状套环/叶片。 磁性流体保持在可旋转轴和固定构件之间的紧密间隙磁隙区域中，并被外部永磁体或电磁体磁化。 在静止或低速下，磁性流体在由旋转的盘状套环/叶片的内表面相对的几组相对的极性齿形成的靠近间隙的磁隙区域中被磁力保持。 通过磁吸引，磁性流体可承受高压区域和低压区域之间的压降，从而在静止和低速下实现磁性密封。 当轴旋转得更快时，磁性流体被强制从磁性密封区域离心，并且在圆盘状的轴环/叶片的圆周边缘处成为旋转的质量或流体池。 然后，流体用作常规的离心密封。 当停止或减速时，达到速度，其中磁力/重力再次主导超过离心力，并且磁性流体返回到磁性密封区域。

公开(公告)号：US4262975A

公开(公告)日：1981-04-21

申请号：US80502

申请日：1979-10-01

申请人： Hooshang Heshmat ,  Wilbur Shapiro

发明人： Hooshang Heshmat ,  Wilbur Shapiro

IPC分类号： F16C17/12 ,  F16C32/06 ,  F16C39/04

CPC分类号： F16C17/024

摘要： A hydrodynamic compliant journal bearing for dynamically supporting a rotating shaft in a journal sleeve, includes three pads, each having a flexible bearing sheet attached to the sleeve along one edge and a resilient supporting structure attached to the sleeve under the bearing sheet for compliantly supporting the bearing sheet to support the shaft. The resilient support has a series of resilient elevations which increase in stiffness in the direction of shaft rotation so that the pad assumes a profile under hydrodynamic loading which increases in inclination with increasing shaft speed to maintain bearing stability over the full load range.

摘要翻译： 用于动态地支撑轴颈套筒中的旋转轴的流体动力学柔性轴颈轴承包括三个垫，每个垫具有沿着一个边缘附接到套筒的柔性轴承片和在轴承片下方附接到套筒的弹性支撑结构，用于柔性支撑 轴承片支撑轴。 弹性支撑件具有一系列弹性升高，其在轴旋转方向上的刚性增加，使得垫片在流体动力学负载下呈现轮廓，随着轴速度的增加倾斜度增加，以在整个载荷范围内保持轴承的稳定性。

公开(公告)号：US4227752A

公开(公告)日：1980-10-14

申请号：US974258

申请日：1978-12-29

申请人： Donald F. Wilcock

发明人： Donald F. Wilcock

IPC分类号： F16C17/06 ,  F16C17/12 ,  F16C32/06

CPC分类号： F16C17/042 ,  F16C17/06

摘要： A hydrodynamic fluid bearing includes a pivoted shoe which can tilt in response to the hydrodynamic fluid forces generated between the bearing surfaces, and a locally conformable bearing layer attached to the shoe facing the opposing bearing surface. The pivoted shoe can pivot to conform to changes in the pitch of the opposing bearing surface and can tilt to the correct slope to generate the hydrodynamic supporting fluid wedge, and can also conform to the shape of the opposing bearing surface if it becomes thermally distorted or "dished". The compliant layer at the top surface of the shoe can conform to smaller area bearing irregularities, and in addition, can locally conform under hydrodynamic forces to assume the ideal configuration to generate the optimum hydrodynamic wedge. The support on which the pivoted shoe is mounted can itself be pivoted on a gimbal ring to provide large area compliance with the bearing surface to follow, if necessary, precession or other large scale runout of the bearing surface. Each stage of the compliant support can be designed to give the stiffness and damping best suited for that stage of support.

摘要翻译： 流体动力流体轴承包括可响应于在轴承表面之间产生的流体动力流体力而倾斜的枢转的鞋，以及附接到面向相对的支承表面的鞋的局部顺应的承载层。 枢转的鞋可以枢转以符合相对的支承表面的间距的变化，并且可以倾斜到正确的斜率以产生流体动力支撑流体楔，并且如果它变得热失真，也可以符合相对的支承表面的形状 “盘”。 鞋的顶表面上的柔顺层可以符合较小的区域轴承不规则性，并且此外，可以在流体动力作用下局部地符合以承担理想构型以产生最佳流体动力楔。 枢转的鞋安装在其上的支撑件本身可以在万向环上枢转以提供与轴承表面的大面积一致性，以便在必要时跟随承受表面的进动或其它大规模的跳动。 柔性支撑件的每个阶段都可以设计成给出最适合于该支撑阶段的刚度和阻尼。

公开(公告)号：US4225196A

公开(公告)日：1980-09-30

申请号：US974259

申请日：1978-12-29

申请人： Stanley Gray

发明人： Stanley Gray

IPC分类号： F16C17/12 ,  F16C33/10 ,  F16C32/06 ,  F16C39/04

CPC分类号： F16C17/042 ,  F16C33/106

摘要： A resilient compliant hydrodynamic fluid film thrust bearing includes a top bearing sheet of thin metalic foil material, and a lower supporting sheet of the same or slightly heavier gauge material. The top bearing sheet is stamped to produce an annular array of truncated sector-shaped flaps attached to the array along one radially extending edge. The second section is stamped to produce an annular pattern of raised projections formed by bending the material along slits to form radially extending bumps which resiliently support the first section. The two sheets are superimposed and aligned, and are welded together along the edge by which the sector-shaped flaps are attached to the first section. The welded assemblies are then sheared from the superimposed foils and deburred.

摘要翻译： 弹性柔性流体动力流体膜推力轴承包括薄金属箔材料的顶部承载片材和相同或稍微较重的材料的下部支撑片材。 顶部轴承板被冲压以产生沿着一个​​径向延伸的边缘附接到阵列的截头的扇形翼片的环形阵列。 第二部分被冲压以产生通过沿着狭缝弯曲材料形成的凸起突起的环形图案，以形成弹性地支撑第一部分的径向延伸的凸块。 两个片材被叠置并对准，并且沿着边缘被焊接在一起，通过该边缘扇形翼片附接到第一部分。 然后将焊接的组件从叠加的箔片剪切并去毛刺。

公开(公告)号：US4223958A

公开(公告)日：1980-09-23

申请号：US974254

申请日：1978-12-29

申请人： Stanley Gray

发明人： Stanley Gray

IPC分类号： F16C17/12 ,  F16C32/06

CPC分类号： F16C17/042 ,  F16C17/024 ,  F16C17/10

摘要： A resilient, compliant, hydrodynamic fluid film bearing, for positioning between a stationary member and the bearing surface of a rotor, includes a bearing module formed as a unitary one-piece article having a resilient support section and a bearing surface section which overlaps its own resilient support section, or that of the next adjacent module, to provide a low cost bearing which is easy, fast and economical to manufacture and assemble.

摘要翻译： 用于在固定构件和转子的支承表面之间定位的弹性，柔顺的流体动力流体膜轴承包括轴承模块，该轴承模块形成为具有弹性支撑部分和与其自身重叠的支承表面部分的整体式单件制品 弹性支撑部分或下一个相邻模块的弹性支撑部分，以提供便宜，快速和经济地制造和组装的低成本轴承。

公开(公告)号：US4067667A

公开(公告)日：1978-01-10

申请号：US656575

申请日：1976-02-09

申请人： Harlan Vernon White

发明人： Harlan Vernon White

IPC分类号： F04B35/04 ,  F04B39/00 ,  H02K33/08 ,  F01B11/02

CPC分类号： H02K33/08 ,  F04B35/045 ,  F04B39/0005

摘要： A compressor of the free-piston resonant type driven by an electrodynamic oscillating motor incorporates means to control the stroke to allow for stable operation over a wide range of operating conditions. The spring-mass system of the compressor which is forced into vibration by the electrodynamic oscillating motor is arranged to have a selectively variable natural resonant frequency generally centered on the power line frequency. Variable area port means responsive to any overstroking are operative to vary the natural frequency of the spring-mass system by varying the stiffness of a gas spring means thereof so as to oppose overstroking and also provide for a maximum stroke limit.