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公开(公告)号：US06666033B1
公开(公告)日：2003-12-23
申请号：US10163781
申请日：2002-06-06
申请人： Gregory W. Swift , John J. Wollan
发明人： Gregory W. Swift , John J. Wollan
IPC分类号： F25B900
CPC分类号： F25B9/145 , F02G2243/54 , F25B2309/1407 , F25B2309/1411 , F25B2309/1423
摘要： An orifice pulse tube refrigerator uses flow resistance, compliance, and inertance components connected to a pulse tube for establishing a phase relationship between oscillating pressure and oscillating velocity in the pulse tube. A temperature regulating system heats or cools a working gas in at least one of the flow resistance and inertance components. A temperature control system is connected to the temperature regulating system for controlling the temperature of the working gas in the at least one of the flow resistance and inertance components and maintains a control temperature that is indicative of a desired temporal phase relationship.
摘要翻译： 孔脉冲管制冷器使用连接到脉冲管的流阻，顺应性和惯性分量来建立脉冲管中的振荡压力和振荡速度之间的相位关系。 温度调节系统在至少一个流阻和惯性分量中加热或冷却工作气体。 温度控制系统连接到温度调节系统，用于控制流动阻力和惯性分量中的至少一个中的工作气体的温度，并保持指示期望的时间相位关系的控制温度。
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公开(公告)号：US06560970B1
公开(公告)日：2003-05-13
申请号：US10165700
申请日：2002-06-06
申请人： Gregory W. Swift
发明人： Gregory W. Swift
IPC分类号： F25B900
CPC分类号： F25B9/145 , F25B9/14 , F25B2309/1403 , F25B2309/1405 , F25B2309/1424
摘要： A regenerator-based engine or refrigerator has a regenerator with two ends at two different temperatures, through which a gas oscillates at a first oscillating volumetric flow rate in the direction between the two ends and in which the pressure of the gas oscillates, and first and second heat exchangers, each of which is at one of the two different temperatures. A dead-end side branch into which the gas oscillates has compliance and is connected adjacent to one of the ends of the regenerator to form a second oscillating gas flow rate additive with the first oscillating volumetric flow rate, the compliance having a volume effective to provide a selected total oscillating gas volumetric flow rate through the first heat exchanger. This configuration enables the first heat exchanger to be configured and located to better enhance the performance of the heat exchanger rather than being confined to the location and configuration of the regenerator.
摘要翻译： 基于再生器的发动机或冰箱具有在两个不同温度下具有两端的再生器，通过该再生器，气体以两端之间的方向以第一振荡体积流速振荡，并且气体的压力在其中振荡， 第二热交换器，每个热交换器处于两个不同温度之一。 气体振荡的死端侧分支具有顺应性并且与再生器的一端之间相邻连接，以形成具有第一振荡体积流量的第二振荡气体流速添加剂，所述柔量具有有效提供的体积 通过第一热交换器的选定的总振荡气体体积流量。 这种构造使得能够构造和定位第一热交换器以更好地增强热交换器的性能，而不是限于再生器的位置和构造。
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3.发明授权公开(公告)号：US06637211B1
公开(公告)日：2003-10-28
申请号：US10218960
申请日：2002-08-13
IPC分类号： F25B900
CPC分类号： F25B9/145 , F02G2243/54 , F25B2309/1402 , F25B2309/1405 , F25B2309/1416
摘要： An oscillating-wave engine or refrigerator having a regenerator or a stack in which oscillating flow of a working gas occurs in a direction defined by an axis of a trunk of the engine or refrigerator, incorporates an improved heat exchanger. First and second connections branch from the trunk at locations along the axis in selected proximity to one end of the regenerator or stack, where the trunk extends in two directions from the locations of the connections. A circulating heat exchanger loop is connected to the first and second connections. At least one fluidic diode within the circulating heat exchanger loop produces a superimposed steady flow component and oscillating flow component of the working gas within the circulating heat exchanger loop. A local process fluid is in thermal contact with an outside portion of the circulating heat exchanger loop.
摘要翻译： 具有再生器或堆叠的振荡波发动机或冰箱，其中工作气体的振荡流在由发动机或冰箱的主干轴线限定的方向上发生，其包括改进的热交换器。 第一和第二连接器从中继线在沿着轴线的位置处选择接近再生器或堆叠的一端分支，其中干线从连接的位置沿两个方向延伸。 循环热交换器回路连接到第一和第二连接。 循环热交换器回路内的至少一个流体二极管在循环热交换器回路内产生工作气体的叠加稳定流分量和振荡流分量。 局部过程流体与循环热交换器回路的外部部分热接触。
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公开(公告)号：US6032464A
公开(公告)日：2000-03-07
申请号：US234236
申请日：1999-01-20
CPC分类号： F25B9/145 , F02G1/02 , F02G2243/54 , F25B2309/1403 , F25B2309/1405 , F25B2309/1413 , F25B2309/1415
摘要： A traveling-wave device is provided with the conventional moving pistons eliminated. Acoustic energy circulates in a direction through a fluid within a torus. A side branch may be connected to the torus for transferring acoustic energy into or out of the torus. A regenerator is located in the torus with a first heat exchanger located on a first side of the regenerator downstream of the regenerator relative to the direction of the circulating acoustic energy; and a second heat exchanger located on an upstream side of the regenerator. The improvement is a mass flux suppressor located in the torus to minimize time-averaged mass flux of the fluid. In one embodiment, the device further includes a thermal buffer column in the torus to thermally isolate the heat exchanger that is at the operating temperature of the device.
摘要翻译： 提供了消除常规移动活塞的行波装置。 声能在通过环面内的流体的方向上循环。 侧分支可以连接到环面以将声能传递到环面中或从环面传出。 再生器位于环形区域中，第一热交换器相对于循环声能的方向位于再生器下游的再生器的第一侧; 以及位于再生器的上游侧的第二热交换器。 改进是位于环面中的质量通量抑制器，以最小化流体的时间平均质量通量。 在一个实施例中，该装置还包括在环面中的热缓冲塔，以热隔离处于设备的工作温度的热交换器。
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公开(公告)号：US4577414A
公开(公告)日：1986-03-25
申请号：US728976
申请日：1985-04-30
IPC分类号： G01C17/26
CPC分类号： G01C17/26
摘要： A remotely readable fiber optic compass. A sheet polarizer is affixed to a magnet rotatably mounted in a compass body, such that the polarizer rotates with the magnet. The optical axis of the sheet polarizer is preferably aligned with the north-south axis of the magnet. A single excitation light beam is divided into four identical beams, two of which are passed through the sheet polarizer and through two fixed polarizing sheets which have their optical axes at right angles to one another. The angle of the compass magnet with respect to a fixed axis of the compass body can be determined by measuring the ratio of the intensities of the two light beams. The remaining ambiguity as to which of the four possible quadrants the magnet is pointing to is resolved by the second pair of light beams, which are passed through the sheet polarizer at positions which are transected by two semicircular opaque strips formed on the sheet polarizer. The incoming excitation beam and the four return beams are communicated by means of optical fibers, giving a remotely readable compass which has no electrical parts.
摘要翻译： 遥控光纤罗盘。 片状偏振器固定在可旋转地安装在罗盘体中的磁体上，使得偏光镜与磁体一起旋转。 偏光片的光轴优选与磁铁的南北轴对准。 单个激发光束被分成四个相同的光束，其中两个光束通过片状偏光片并通过两个固定的偏振片，它们的光轴彼此成直角。 罗盘磁体相对于罗盘体的固定轴的角度可以通过测量两个光束的强度的比例来确定。 关于磁体指向的四个可能象限中的哪一个的剩余模糊度被第二对光束解析，第二对光束在形成在薄片偏振器上的两个半圆形不透明条带横切的位置上穿过薄片偏振器。 传入的激励光束和四个返回光束通过光纤传送，给出了一个远程读取的罗盘，没有电气部分。
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公开(公告)号：US06658862B2
公开(公告)日：2003-12-09
申请号：US10125268
申请日：2002-04-18
IPC分类号： F25B900
CPC分类号： F02G1/0435 , F02G2243/54 , F25B9/145 , F25B2309/1402 , F25B2309/1407
摘要： A thermoacoustic device is formed with a resonator system defining at least one region of high specific acoustic impedance in an acoustic wave within the resonator system. A plurality of thermoacoustic units are cascaded together within the region of high specific acoustic impedance, where at least one of the thermoacoustic units is a regenerator unit.
摘要翻译： 热声装置形成有谐振器系统，其在谐振器系统内的声波中限定至少一个具有高声阻抗的区域。 多个热声单元在高声学阻抗的区域内级联在一起，其中至少一个热声单元是再生器单元。
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7.发明授权Method and apparatus for rapid stopping and starting of a thermoacoustic engine 失效用于快速停止和启动热声发动机的方法和装置公开(公告)号：US06644028B1
公开(公告)日：2003-11-11
申请号：US10176311
申请日：2002-06-20
IPC分类号： F01B2908
CPC分类号： F25B9/14 , F02G2243/54 , F25B9/145 , F25B2309/1403 , F25B2309/1424
摘要： A thermoacoustic engine-driven system with a hot heat exchanger, a regenerator or stack, and an ambient heat exchanger includes a side branch load for rapid stopping and starting, the side branch load being attached to a location in the thermoacoustic system having a nonzero oscillating pressure and comprising a valve, a flow resistor, and a tank connected in series. The system is rapidly stopped simply by opening the valve and rapidly started by closing the valve.
摘要翻译： 具有热交换器，再生器或堆叠的热声发动机驱动系统和环境热交换器包括用于快速停止和起动的侧分支负载，该侧分支负载附接到具有非零振荡的热声系统中的位置 压力并且包括串联连接的阀，流阻器和罐。 系统通过打开阀门即可快速停止，并通过关闭阀门快速启动。
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公开(公告)号：US5456082A
公开(公告)日：1995-10-10
申请号：US261361
申请日：1994-06-16
CPC分类号： F02G1/0435 , F24J3/00 , F25B9/145 , F02G2243/52 , F02G2243/54 , F25B2309/003 , F25B2309/1416
摘要： A thermoacoustic stack for connecting two heat exchangers in a thermoacoustic energy converter provides a convex fluid-solid interface in a plane perpendicular to an axis for acoustic oscillation of fluid between the two heat exchangers. The convex surfaces increase the ratio of the fluid volume in the effective thermoacoustic volume that is displaced from the convex surface to the fluid volume that is adjacent the surface within which viscous energy losses occur. Increasing the volume ratio results in an increase in the ratio of transferred thermal energy to viscous energy losses, with a concomitant increase in operating efficiency of the thermoacoustic converter. The convex surfaces may be easily provided by a pin array having elements arranged parallel to the direction of acoustic oscillations and with effective radial dimensions much smaller than the thicknesses of the viscous energy loss and thermoacoustic energy transfer volumes.
摘要翻译： 用于连接热声能量转换器中的两个热交换器的热声叠层在垂直于轴线的平面中提供凸起的流体 - 固体界面，用于两个热交换器之间的流体的声振荡。 凸表面增加了从凸表面移位到与粘性能量损失发生的表面相邻的流体体积的有效热声体积中的流体体积的比例。 增加体积比导致传递的热能与粘性能量损失的比率的增加，伴随着热声转换器的操作效率的增加。 凸表面可以容易地由具有平行于声振动方向布置的元件的销阵列提供，并且有效径向尺寸远小于粘性能量损失和热声能传递体积的厚度。
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公开(公告)号：US4560849A
公开(公告)日：1985-12-24
申请号：US620287
申请日：1984-06-13
申请人： Albert Migliori , Gregory W. Swift
发明人： Albert Migliori , Gregory W. Swift
摘要： A regulated induction heater for heating a stream of flowing fluid to a predetermined desired temperature. The heater includes a radiofrequency induction coil which surrounds a glass tube through which the fluid flows. A heating element consisting of a bundle of approximately 200 stainless steel capillary tubes located within the glass tube couples the output of the induction coil to the fluid. The temperature of the fluid downstream from the heating element is sensed with a platinum resistance thermometer, the output of which is applied to an adjustable proportional and integral feedback control circuit which regulates the power applied to the induction coil. The heater regulates the fluid temperature to within 0.005.degree. C. at a flow rate of 50 cm.sup.3 /second with a response time of less than 0.1 second, and can accommodate changes in heat load up to 1500 watts.
摘要翻译： 一种用于将流动流体流加热至预定期望温度的调节感应加热器。 加热器包括射频感应线圈，其围绕流体流过的玻璃管。 由位于玻璃管内的大约200个不锈钢毛细管组成的加热元件将感应线圈的输出与流体耦合。 使用铂电阻温度计感测加热元件下游的流体的温度，铂电阻温度计的输出被施加到可调节的比例积分反馈控制电路，其调节施加到感应线圈的功率。 加热器以50cm 3 /秒的流速将流体温度调节到0.005℃以内，响应时间小于0.1秒，并且可以适应高达1500瓦特的热负荷变化。
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10.发明授权
公开(公告)号：US4516632A
公开(公告)日：1985-05-14
申请号：US413635
申请日：1982-08-31
CPC分类号： F28D9/0075 , F28F2260/02 , Y10S366/03
摘要： A microchannel crossflow fluid heat exchanger and a method for its fabrication are disclosed. The heat exchanger is formed from a stack of thin metal sheets which are bonded together. The stack consists of alternating slotted and unslotted sheets. Each of the slotted sheets includes multiple parallel slots which form fluid flow channels when sandwiched between the unslotted sheets. Successive slotted sheets in the stack are rotated ninety degrees with respect to one another so as to form two sets of orthogonally extending fluid flow channels which are arranged in a crossflow configuration. The heat exchanger has a high surface to volume ratio, a small dead volume, a high heat transfer coefficient, and is suitable for use with fluids under high pressures. The heat exchanger has particular application in a Stirling engine that utilizes a liquid as the working substance.
摘要翻译： 公开了一种微通道横流流体热交换器及其制造方法。 热交换器由粘合在一起的薄金属片堆叠形成。 堆叠由交替的开槽和未打印的纸张组成。 每个开槽片包括多个平行的狭槽，当夹在未打印的片材之间时形成流体流动通道。 堆叠中的连续的开槽片材相对于彼此旋转90度，以便形成两组正交延伸的流体流动通道，这些流体流动通道以横向流动的形式布置。 热交换器具有高的体积比，小的死体积，高的传热系数，并且适用于高压下的流体。 热交换器特别适用于采用液体作为工作物质的斯特林发动机。
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