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1. 发明授权

US09951784B2 Mechanically-coupled turbomachinery configurations and cooling methods for hermetically-sealed high-temperature operation 有权
公开(公告)号：US09951784B2
公开(公告)日：2018-04-24
申请号：US13191979
申请日：2011-07-27
申请人： Giridhari L. Agrawal , Charles W. Buckley , Muthusamy Rajendran
发明人： Giridhari L. Agrawal , Charles W. Buckley , Muthusamy Rajendran
IPC分类号： F04D25/02 , F04D29/04 , F04D13/02 , F04D29/054 , F04D29/58 , F04D25/06
CPC分类号： F04D25/024 , F04D13/021 , F04D25/0606 , F04D29/0405 , F04D29/054 , F04D29/5806
摘要： A hermetically-sealed turbomachine, such as a motor-driven blower and a turbine driven generator, capable of reliable high-temperature operation, especially for large sized turbomachine includes a hot blower, compressor or turbine end of the turbomachine that is separated from the cooler electric motor, generator or alternator end of the turbomachine by a compliant mechanical coupling and a thermal choke assembly. The turbomachine housing is also hermetically sealed, providing control over the process gas within the machine housing, and permitting an internal cooling method within the turbomachine, whereby a small amount of process gas itself is used within the turbomachine for providing cooling of the rotating shafts, the axial fan, radial fan, or turbine impeller, the bearings and the electric motor, generator or alternator disposed within the turbomachine housing. The cooling method can be aided by a heat exchanger operatively communicating with the turbomachine.

2. 发明授权

US09476428B2 Ultra high pressure turbomachine for waste heat recovery 有权
标题翻译：用于废热回收的超高压涡轮机
公开(公告)号：US09476428B2
公开(公告)日：2016-10-25
申请号：US13484751
申请日：2012-05-31
申请人： Giridhari L. Agrawal , Charles W. Buckley , Ali Shakil , Andrew Hamilton Coward
发明人： Giridhari L. Agrawal , Charles W. Buckley , Ali Shakil , Andrew Hamilton Coward
IPC分类号： F04D25/08 , F04D29/58 , F04D25/02 , F01D15/10 , F01D25/12 , F01D25/16 , H02K1/32 , F04D25/06
CPC分类号： F04D25/024 , F01D15/10 , F01D25/125 , F01D25/168 , F04D25/0606 , H02K1/32
摘要： A turbine-driven alternator (i.e., a turbomachine) suitable for generating electrical power from process gas waste energy. In particular suitable for very high density process gases such as super critical CO2, R134a, R245fa, etc. The turboalternator comprises two separate machines, specifically, a turbine device and an alternator device operatively connected together by a coupling shaft. The rotating shaft assemblies for each machines on the turbine side and the alternator side are supported by hydrodynamic foil gas bearings. The foil gas bearings use process gas at the turbine side, enabling high-pressure operation (˜3000 psia) and thrust load balancing. At the alternator side, cooling fluid is used in the foil gas bearings, enabling high-speed (˜40,000 rpm), low-windage, oil-free operation with closed-loop shaft cooling.
摘要翻译：适用于从工艺废气能量产生电能的涡轮机驱动的交流发电机（即，涡轮机）。特别适合于非常高密度的工艺气体，例如超临界CO2，R134a，R245fa等。涡轮分离器包括两个独立的机器，具体地，涡轮装置和通过联接轴可操作地连接在一起的交流发电机装置。涡轮机侧和交流发电机侧的每个机器的旋转轴组件由流体动力箔气体轴承支撑。箔气体轴承在涡轮机侧使用工艺气体，可实现高压运行（〜3000 psia）和推力负载平衡。在交流发电机侧，冷却流体用于箔气体轴承，通过闭环轴冷却可实现高速（约40,000 rpm），低风量，无油运行。

3. 发明申请

US20120027567A1 MECHANICALLY-COUPLED TURBOMACHINERY CONFIGURATIONS AND COOLING METHODS FOR HERMETICALLY-SEALED HIGH-TEMPERATURE OPERATION 有权
标题翻译：机械式联接的涡轮机配置和冷却方法，用于密封高温操作
公开(公告)号：US20120027567A1
公开(公告)日：2012-02-02
申请号：US13191979
申请日：2011-07-27
申请人： Giridhari L. Agrawal , Charles W. Buckley , Muthusamy Rajendran
发明人： Giridhari L. Agrawal , Charles W. Buckley , Muthusamy Rajendran
IPC分类号： F04D29/46
CPC分类号： F04D25/024 , F04D13/021 , F04D25/0606 , F04D29/0405 , F04D29/054 , F04D29/5806
摘要： The present invention provides a hermetically sealed turbomachine, such as a motor-driven blower and a turbine driven generator, capable of reliable high-temperature operation, especially for large sized turbomachines. The hot blower, compressor or turbine end of the turbomachine is separated from the cooler electric motor, generator or alternator end of the turbomachine by a compliant mechanical coupling and a thermal choke assembly, providing reliable high-temperature operation. The turbomachine housing is also hermetically sealed, providing control over the process gas within the machine housing, and permitting an internal cooling method within the turbomachine, whereby a small amount of process gas itself is used within the turbomachine for providing cooling of the rotating shafts, the axial fan, radial fan, or turbine impeller, the bearings and the electric motor, generator or alternator disposed within the turbomachine housing. The cooling method can be aided by a heat exchanger operatively communicating with the turbomachine.
摘要翻译：本发明提供了一种密封的涡轮机，例如电机驱动的鼓风机和涡轮驱动发电机，能够进行可靠的高温操作，特别是对于大型涡轮机。涡轮机的热风机，压缩机或涡轮机端部通过柔性机械联轴器和热扼流圈组件与涡轮机的冷却器电动机，发电机或交流发电机端分离，从而提供可靠的高温运行。涡轮机壳体也是密封的，提供对机器壳体内的工艺气体的控制，并允许涡轮机内的内部冷却方法，由此在涡轮机内部使用少量处理气体来提供旋转轴的冷却，轴流风扇，径向风扇或涡轮叶轮，轴承以及设置在涡轮机壳体内的电动机，发电机或交流发电机。可以通过与涡轮机操作地连通的热交换器来辅助冷却方法。

4. 发明申请

US20160365770A1 FOIL BEARING SUPPORTED MOTOR WITH ADJUSTABLE THRUST BEARING CAP 有权
标题翻译：带轴承支撑的电动机，带有可调节的轴承座
公开(公告)号：US20160365770A1
公开(公告)日：2016-12-15
申请号：US14812439
申请日：2015-07-29
申请人： Alexander R. Nelson , Charles W. Buckley , Giridhari L. Agrawal
发明人： Alexander R. Nelson , Charles W. Buckley , Giridhari L. Agrawal
IPC分类号： H02K7/08 , H02K3/44
CPC分类号： H02K5/02 , H01M8/04201 , H02K5/12 , H02K5/1672 , H02K5/18 , H02K5/20 , H02K2205/03
摘要： An electric motor includes a stator; an annular end cap, fastened at a first end of the stator; a threaded seat that is mounted at an outward end face of the annular end cap for receiving a first gas foil thrust bearing; a shaft, inserted through the stator, through the annular end cap, and through the threaded seat; a thrust runner mounted at an end of said shaft adjacent the threaded seat; a first gas foil thrust bearing that is mounted into the threaded seat, adjacent a face of the thrust runner facing the stator; a bearing cap that has a threaded fitting by which it is attached onto the threaded seat; and a second gas foil thrust bearing that is mounted into the bearing cap adjacent to a face of the thrust runner opposite the first gas foil thrust bearing.
摘要翻译：电动机包括定子; 环形端盖，固定在定子的第一端; 螺纹座，其安装在所述环形端盖的外端面，用于容纳第一气箔推力轴承; 穿过定子插入的轴，穿过环形端盖，并穿过螺纹座; 安装在所述轴的与所述螺纹座相邻的端部处的推力流道; 第一气垫推力轴承，其安装在螺纹座中，靠近面向定子的推力流道的表面; 轴承盖，其具有螺纹配件，通过该螺纹配件将其附接到螺纹座上; 以及第二气体箔推力轴承，其与所述推力流道的与所述第一气体箔推力轴承相对的表面相邻地安装在所述轴承盖中。

5. 发明申请

US20120306206A1 ULTRA HIGH PRESSURE TURBOMACHINE FOR WASTE HEAT RECOVERY 有权
标题翻译：超高压涡轮机用于废热回收
公开(公告)号：US20120306206A1
公开(公告)日：2012-12-06
申请号：US13484751
申请日：2012-05-31
申请人： Giridhari L. Agrawal , Charles W. Buckley , Ali Shakil , Andrew Hamilton Coward
发明人： Giridhari L. Agrawal , Charles W. Buckley , Ali Shakil , Andrew Hamilton Coward
IPC分类号： H02K7/18
CPC分类号： F04D25/024 , F01D15/10 , F01D25/125 , F01D25/168 , F04D25/0606 , H02K1/32
摘要： A turbine-driven alternator (i.e., a turbomachine) suitable for generating electrical power from process gas waste energy. In particular suitable for very high density process gases such as super critical CO2, R134a, R245fa, etc. The turboalternator comprises two separate machines, specifically, a turbine device and an alternator device operatively connected together by a coupling shaft. The rotating shaft assemblies for each machines on the turbine side and the alternator side are supported by hydrodynamic foil gas bearings. The foil gas bearings use process gas at the turbine side, enabling high-pressure operation (˜3000 psia) and thrust load balancing. At the alternator side, cooling fluid is used in the foil gas bearings, enabling high-speed (˜40,000 rpm), low-windage, oil-free operation with closed-loop shaft cooling.
摘要翻译：适用于从工艺废气能量产生电能的涡轮机驱动的交流发电机（即，涡轮机）。特别适合于非常高密度的工艺气体，例如超临界CO2，R134a，R245fa等。涡轮分离器包括两个独立的机器，具体地，涡轮装置和通过联接轴可操作地连接在一起的交流发电机装置。涡轮机侧和交流发电机侧的每个机器的旋转轴组件由流体动力箔气体轴承支撑。箔气体轴承在涡轮机侧使用工艺气体，可实现高压运行（〜3000 psia）和推力负载平衡。在交流发电机侧，冷却流体用于箔气体轴承，通过闭环轴冷却可实现高速（约40,000 rpm），低风量，无油运行。

6. 发明申请

US20120082575A1 OIL-FREE, LOW PRESSURE WATER VAPOR BLOWER 有权
标题翻译：无油，低压水蒸汽鼓风机
公开(公告)号：US20120082575A1
公开(公告)日：2012-04-05
申请号：US13251582
申请日：2011-10-03
申请人： Giridhari L. Agrawal , Charles W. Buckley , Jared Knechel
发明人： Giridhari L. Agrawal , Charles W. Buckley , Jared Knechel
IPC分类号： F04D29/10 , F04D29/046 , F04D29/58 , F04D29/52
CPC分类号： F04D29/057 , F04D25/0606 , F04D25/082 , F04D29/5846 , F16C2360/46
摘要： A high-speed, single-stage, motor-driven blower designed to move water vapor includes an axial flow compressor and a rotating assembly supported by gas foil bearings and driven by a brushless permanent magnet synchronous motor utilizing a remotely mounted variable frequency drive. The blower is immersed in a water vapor flow for operation. Accordingly, the blower comprises an outer blower housing and an inner blower housing defining an annular cavity therebetween, wherein the inner blower housing is held within the outer blower housing by seals, and contains and protects the motor components and the bearings against water damage and contamination. A cooling flow may be leaked through the inner blower housing to cool the internal operational components of the blower and to capture heat therefrom, which can be added to the water vapor flow moving through the blower.
摘要翻译：设计用于移动水蒸汽的高速，单级，电动鼓风机包括轴流式压缩机和由气体箔轴承支撑的旋转组件，并由使用远程安装的变频驱动器的无刷永磁同步电动机驱动。将鼓风机浸入水蒸汽流中进行操作。因此，鼓风机包括外部鼓风机壳体和在其间限定环形空腔的内部鼓风机壳体，其中内部鼓风机壳体通过密封件保持在外部鼓风机壳体内，并且容纳和保护电动机部件和轴承免受水的损害和污染。冷却流可能通过内部鼓风机壳体泄漏，以冷却鼓风机的内部操作部件并从其中捕获热量，这可以被添加到通过鼓风机移动的水蒸汽流中。

7. 发明授权

US10008899B2 Foil bearing supported motor with adjustable thrust bearing cap 有权
公开(公告)号：US10008899B2
公开(公告)日：2018-06-26
申请号：US14812439
申请日：2015-07-29
申请人： Alexander R. Nelson , Charles W. Buckley , Giridhari L. Agrawal
发明人： Alexander R. Nelson , Charles W. Buckley , Giridhari L. Agrawal
IPC分类号： H02K15/12 , H02K5/02 , H02K5/12 , H02K5/18 , H02K5/20 , H02K5/167 , H01M8/04082
CPC分类号： H02K5/02 , H01M8/04201 , H02K5/12 , H02K5/1672 , H02K5/18 , H02K5/20 , H02K2205/03
摘要： An electric motor includes a stator; an annular end cap, fastened at a first end of the stator; a threaded seat that is mounted at an outward end face of the annular end cap for receiving a first gas foil thrust bearing; a shaft, inserted through the stator, through the annular end cap, and through the threaded seat; a thrust runner mounted at an end of said shaft adjacent the threaded seat; a first gas foil thrust bearing that is mounted into the threaded seat, adjacent a face of the thrust runner facing the stator; a bearing cap that has a threaded fitting by which it is attached onto the threaded seat; and a second gas foil thrust bearing that is mounted into the bearing cap adjacent to a face of the thrust runner opposite the first gas foil thrust bearing.

8. 发明授权

US07063519B2 Motor driven centrifugal compressor/blower 有权
标题翻译：电动离心式压缩机/鼓风机
公开(公告)号：US07063519B2
公开(公告)日：2006-06-20
申请号：US10612656
申请日：2003-07-02
申请人： Giridhari L. Agrawal , Charles W. Buckley
发明人： Giridhari L. Agrawal , Charles W. Buckley
IPC分类号： F04B17/03
CPC分类号： F04D29/057 , F04D25/0606 , F04D29/053 , F04D29/5806
摘要： This invention provides a small, high efficiency, oil free motor driven compressor/blower suitable for providing pressurized, contamination-free gas and or air to transportation, industrial and aerospace fuel cell systems or other contaminant-intolerant applications. The motor driven compressor/blower rotor assembly is supported by foil air bearings and rotates at high speed by using a high frequency drive. The impeller is a centrifugal type design. The MDC can be easily integrated into the air management system of a fuel cell.
摘要翻译：本发明提供了一种小型，高效率的无油马达驱动的压缩机/鼓风机，其适用于向运输，工业和航空航天燃料电池系统或其他污染物不耐受应用提供加压，无污染的气体和/或空气。电机驱动的压缩机/鼓风机转子组件由铝箔空气轴承支撑，并通过使用高频驱动器高速旋转。叶轮是离心式设计。 MDC可以轻松地集成到燃料电池的空气管理系统中。

9. 发明申请

US20140084588A1 GAS BEARING SUPPORTED TURBOMACHINE WITH REDUCTION GEAR ASSEMBLY 审中-公开
标题翻译：具有减速齿轮组件的气体支撑支撑涡轮发动机
公开(公告)号：US20140084588A1
公开(公告)日：2014-03-27
申请号：US14033966
申请日：2013-09-23
申请人： Giridhari L. Agrawal , Charles W. Buckley
发明人： Giridhari L. Agrawal , Charles W. Buckley
IPC分类号： H02K7/18
CPC分类号： H02K7/1823 , F01D25/16 , F05D2220/40 , F05D2260/4031 , H02K5/1672 , H02K7/116 , H02K9/06 , H02K2205/03
摘要： A turbine-driven generator (i.e., a turbomachine) is provided for extracting energy and generating electrical power from a process gas. A turbine impeller mounted on a rotating shaft is rotatably disposed within a turbine housing for processing process gas flowing between an inlet and an outlet of the turbine. The rotating shaft of the turbine is coupled to a high-speed pinion of a reduction gear assembly to transfer torque from the turbine, via the gear assembly, to a generating device. Upon operation of the turbine impeller, rotation of the turbine rotating shaft, often at high speeds, is transferred to the high-speed pinion, which transfers torque to a low-speed gear of the gear assembly in engagement with the pinion. Rotation of the low-speed gear in turn causes a rotating assembly of the generating device to rotate, often at much lower speeds, which generates power that can be directed to an energy grid.
摘要翻译：提供涡轮驱动发电机（即，涡轮机），用于从处理气体中提取能量并产生电力。安装在旋转轴上的涡轮叶轮可旋转地设置在涡轮壳体内，用于处理在涡轮机的入口和出口之间流动的处理气体。涡轮机的旋转轴联接到减速齿轮组件的高速小齿轮，以将扭矩从涡轮经由齿轮组件传递到发电装置。在涡轮机叶轮的运行时，涡轮机转动轴的转动通常以高速转动，转移到高速小齿轮，高速小齿轮将转矩传递到与小齿轮啮合的齿轮组件的低速齿轮。低速齿轮的旋转又使得发电装置的旋转组件经常以低得多的速度旋转，这产生能够被引导到能量网格的功率。

10. 发明申请

US20180269742A1 FOIL BEARING SUPPORTED MOTOR WITH ADJUSTABLE THRUST BEARING CAP 审中-公开
公开(公告)号：US20180269742A1
公开(公告)日：2018-09-20
申请号：US15983257
申请日：2018-05-18
申请人： Alexander R. Nelson , Charles W. Buckley , Giridhari L. Agrawal
发明人： Alexander R. Nelson , Charles W. Buckley , Giridhari L. Agrawal
IPC分类号： H02K5/02 , H01M8/04082 , H02K5/167 , H02K5/12 , H02K5/20 , H02K5/18
CPC分类号： H02K5/02 , H01M8/04201 , H02K5/12 , H02K5/1672 , H02K5/18 , H02K5/20 , H02K2205/03
摘要： An electric motor includes a stator; an annular end cap, fastened at a first end of the stator; a threaded seat that is mounted at an outward end face of the annular end cap for receiving a first gas foil thrust bearing; a shaft, inserted through the stator, through the annular end cap, and through the threaded seat; a thrust runner mounted at an end of said shaft adjacent the threaded seat; a first gas foil thrust bearing that is mounted into the threaded seat, adjacent a face of the thrust runner facing the stator; a bearing cap that has a threaded fitting by which it is attached onto the threaded seat; and a second gas foil thrust bearing that is mounted into the bearing cap adjacent to a face of the thrust runner opposite the first gas foil thrust bearing.

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