-
公开(公告)号:US06933661B2
公开(公告)日:2005-08-23
申请号:US10271454
申请日:2002-10-16
IPC分类号: H01L41/053 , H02N2/04 , H01L41/08
CPC分类号: H01L41/053
摘要: A piezoelectric actuator and a method of assembling and employing a piezoelectric actuator. This method comprises the steps of positioning an expandable piezoelectric material inside a case, and enclosing a vaporizable liquid in the case. The case is positioned in a high temperature environment; and the liquid vaporizes, in that high temperature environment, over a given period of time, to maintain the temperature of the piezoelectric material below a given value for said period of time. Preferably, the vaporizing liquid maintains the temperature of the piezoelectric material substantially constant over that period of time. Also, preferably the case is provided with a pressure responsive valve that opens and closes, in the high temperature environment, to expose the liquid to that environment and control the vaporization of the liquid to maintain the temperature of the piezoelectric material substantially constant over the period of time.
摘要翻译: 压电致动器以及组装和使用压电致动器的方法。 该方法包括将可膨胀压电材料定位在壳体内并将壳体中的可汽化液体包围的步骤。 该案件位于高温环境中; 并且在该高温环境中,液体在给定的时间内蒸发,以将压电材料的温度保持在给定值以下一段时间。 优选地,汽化液体在该时间段内保持压电材料的温度基本上恒定。 此外,优选地,在高温环境中优选地设置有打开和关闭的压力响应阀,以将液体暴露于该环境并且控制液体的蒸发以在压缩材料的温度保持基本上恒定的期间 的时间。
-
公开(公告)号:US06883774B2
公开(公告)日:2005-04-26
申请号:US10277028
申请日:2002-10-21
申请人: Matthew C. Nielsen , Laura J. Meyer , Todd G. Wetzel , Stanton E. Weaver , Jeffrey B. Fortin , Renato Guida
发明人: Matthew C. Nielsen , Laura J. Meyer , Todd G. Wetzel , Stanton E. Weaver , Jeffrey B. Fortin , Renato Guida
CPC分类号: F16K99/0001 , F15C5/00 , F16K99/0007 , F16K99/0015 , F16K99/0048 , F16K99/0057 , F16K2099/0074
摘要: A microvalve and a method of forming a microvalve. The microvalve comprises first and second layers, a diaphragm member and a switching means. The first and second layers are secured together to form a valve body that forms an inlet opening for receiving fluid, an outlet opening for conducting fluid from the valve body, and a flow channel for conducting fluid from the inlet to the outlet. The diaphragm is disposed between the layers, and is movable between open and closed positions. In these position, the diaphragm, respectively, allows and blocks the flow of fluid from the inlet to the flow channel. The diaphragm is biased to the closed position, and moves from the closed position to the open position when the pressure of fluid in the inlet reaches a preset value. The switching means is connected to the valve body for moving the diaphragm to the closed position against the pressure of fluid in the inlet. Preferably, the microvalve is constructed out of SiC and stainless steel materials, allowing the microvalve to be used in a harsh environment.
摘要翻译: 一种微型阀和形成微型阀的方法。 微型阀包括第一和第二层,隔膜构件和开关装置。 第一层和第二层被固定在一起以形成阀体,其形成用于接收流体的入口开口,用于从阀体传导流体的出口,以及用于将流体从入口传导到出口的流动通道。 隔膜设置在层之间,并且可在打开位置和关闭位置之间移动。 在这些位置上,隔膜分别允许和阻止流体从入口到流动通道的流动。 隔膜被偏压到关闭位置,并且当入口中的流体的压力达到预设值时,隔膜从关闭位置移动到打开位置。 切换装置连接到阀体,用于抵抗入口中的流体的压力将隔膜移动到关闭位置。 优选地,微型阀由SiC和不锈钢材料制成,允许微型阀在恶劣的环境中使用。
-
公开(公告)号:US06790779B2
公开(公告)日:2004-09-14
申请号:US10202331
申请日:2002-07-24
IPC分类号: H01L21302
CPC分类号: B81C1/00619 , B81B2203/033 , B81C1/00412 , B81C2201/0132 , B81C2201/016 , H01L21/0332 , H01L21/3065 , H01L21/3081 , Y10S438/964
摘要: A method for creating deep features in a Si-containing substrate for use in fabricating MEMS type devices is provided. The method includes first forming a thin Ni hardmask on a surface of a Si-containing substrate. The Ni hardmask is patterned using conventional photolithography and wet etching so as to expose at least one portion of the underlying Si-containing substrate. The at least one exposed portion of the Si-containing substrate, not containing the patterned hardmask, is then etched in a plasma that includes free radicals generated from a gaseous mixture of chlorine (Cl2), sulfur hexafluoride (SF6) and oxygen (O2). The interaction of the gas species in the plasma yields a rapid silicon etch rate that is highly selective to the Ni hardmask. The etch rate ratio of Si to Ni using the inventive method is greater than 250:1.
摘要翻译: 提供了一种用于制造用于制造MEMS型器件的含Si衬底中的深度特征的方法。 该方法包括首先在含Si衬底的表面上形成薄的Ni硬掩模。 使用常规的光刻和湿法刻蚀图案化Ni硬掩模,以暴露下面的含Si衬底的至少一部分。 然后,在包含由氯(Cl 2),六氟化硫(SF 6)和氧气(O 2)的气体混合物产生的自由基的等离子体中蚀刻含有图案化硬掩模的含Si衬底的至少一个暴露部分, 。 等离子体中的气体物质的相互作用产生了对Ni硬掩模高度选择性的快速硅蚀刻速率。 使用本发明方法的Si与Ni的蚀刻速率比大于250:1。
-
4.
公开(公告)号:US07966801B2
公开(公告)日:2011-06-28
申请号:US11567950
申请日:2006-12-07
申请人: Chukwueloka Umeh , Leonardo C. Kammer , Minesh Shah , Jeffrey B. Fortin , Aaron Knobloch , William J. Myers , Alfred Albert Mancini
发明人: Chukwueloka Umeh , Leonardo C. Kammer , Minesh Shah , Jeffrey B. Fortin , Aaron Knobloch , William J. Myers , Alfred Albert Mancini
IPC分类号: F02C9/00
CPC分类号: F02C7/22 , F02C9/266 , F02C9/46 , F05D2250/82 , F05D2250/84 , F05D2260/80 , F05D2270/092 , F23R3/286 , F23R3/343 , F23R3/50 , F23R2900/00013 , F23R2900/03281
摘要: An Active Combustion Control System and method provides for monitoring combustor pressure and modulating fuel to a gas turbine combustor to prevent combustion dynamics and/or flame extinguishments. The system includes an actuator, wherein the actuator periodically injects pulsed fuel into the combustor. The apparatus also includes a sensor connected to the combustion chamber down stream from an inlet, where the sensor generates a signal detecting the pressure oscillations in the combustor. The apparatus controls the actuator in response to the sensor. The apparatus prompts the actuator to periodically inject pulsed fuel into the combustor at a predetermined sympathetic frequency and magnitude, thereby controlling the amplitude of the pressure oscillations in the combustor by modulating the natural oscillations.
摘要翻译: 主动燃烧控制系统和方法提供监测燃烧器压力并将燃料调节到燃气轮机燃烧器以防止燃烧动力学和/或火焰熄灭。 该系统包括致动器,其中致动器周期性地将脉冲燃料喷射到燃烧器中。 该装置还包括一个传感器,其连接到从入口向下游的燃烧室,其中传感器产生检测燃烧器中的压力振荡的信号。 该装置响应于传感器控制致动器。 该装置促使致动器以预定的交感频率和大小周期性地将脉冲燃料喷射到燃烧器中,从而通过调节自然振荡来控制燃烧器中的压力振荡的振幅。
-
公开(公告)号:US07880580B2
公开(公告)日:2011-02-01
申请号:US11648919
申请日:2007-01-03
IPC分类号: H01C7/10
CPC分类号: H01C7/008 , H01C17/08 , Y10T29/49082 , Y10T29/49083
摘要: According to some embodiments, a first layer of doped material may be provided to form a resistor. A second layer of undoped material may then be formed on the first layer. The first layer might comprise, for example, a layer of doped silicon carbide while the second layer comprises a layer of undoped silicon carbide. The resistance of the resistor may then be measured to determine a temperature.
摘要翻译: 根据一些实施例,可以提供第一掺杂材料层以形成电阻器。 然后可以在第一层上形成第二层未掺杂的材料。 第一层可以包括例如掺杂碳化硅层,而第二层包括未掺杂的碳化硅层。 然后可以测量电阻器的电阻以确定温度。
-
6.
公开(公告)号:US20080134684A1
公开(公告)日:2008-06-12
申请号:US11567950
申请日:2006-12-07
申请人: Chukwueloka Umeh , Leonardo C. Kammer , Minesh Shah , Jeffrey B. Fortin , Aaron Knobloch , William J. Myers , Alfred Albert Mancini
发明人: Chukwueloka Umeh , Leonardo C. Kammer , Minesh Shah , Jeffrey B. Fortin , Aaron Knobloch , William J. Myers , Alfred Albert Mancini
IPC分类号: F02C1/00
CPC分类号: F02C7/22 , F02C9/266 , F02C9/46 , F05D2250/82 , F05D2250/84 , F05D2260/80 , F05D2270/092 , F23R3/286 , F23R3/343 , F23R3/50 , F23R2900/00013 , F23R2900/03281
摘要: An Active Combustion Control System and method provides for monitoring combustor pressure and modulating fuel to a gas turbine combustor to prevent combustion dynamics and/or flame extinguishments. The system includes an actuator, wherein the actuator periodically injects pulsed fuel into the combustor. The apparatus also includes a sensor connected to the combustion chamber down stream from an inlet, where the sensor generates a signal detecting the pressure oscillations in the combustor. Lastly, the apparatus includes means for controlling the actuator in response to the sensor. The means for controlling prompts the actuator to periodically inject pulsed fuel into the combustor at a predetermined sympathetic frequency and magnitude, thereby controlling the amplitude of the pressure oscillations in the combustor by modulating the natural oscillations.
摘要翻译: 主动燃烧控制系统和方法提供监测燃烧器压力并将燃料调节到燃气轮机燃烧器以防止燃烧动力学和/或火焰熄灭。 该系统包括致动器,其中致动器周期性地将脉冲燃料喷射到燃烧器中。 该装置还包括一个传感器,其连接到从入口向下游的燃烧室,其中传感器产生检测燃烧器中的压力振荡的信号。 最后,该装置包括用于响应于传感器控制致动器的装置。 用于控制的装置促使致动器以预定的交感频率和大小周期性地将脉冲燃料喷射到燃烧器中,从而通过调节自然振荡来控制燃烧器中的压力振荡的振幅。
-
-
-
-
-