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    SHAPE MEMORY ALLOY ACTUATOR WITH ENHANCED HEAT TRANSFER CHARACTERISTICS
    62.
    发明申请
    SHAPE MEMORY ALLOY ACTUATOR WITH ENHANCED HEAT TRANSFER CHARACTERISTICS 有权
    形状记忆合金执行器，具有增强的热传递特性

    公开(公告)号：US20120234000A1

    公开(公告)日：2012-09-20

    申请号：US13048952

    申请日：2011-03-16

    申请人： Alan L. Browne ,  Nancy L. Johnson ,  Xiujie Gao ,  James Holbrook Brown ,  Nilesh D. Mankame ,  Nicholas W. Pinto, IV

    发明人： Alan L. Browne ,  Nancy L. Johnson ,  Xiujie Gao ,  James Holbrook Brown ,  Nilesh D. Mankame ,  Nicholas W. Pinto, IV

    IPC分类号： F01B29/10

    CPC分类号： F03G7/065

    摘要： A shape memory alloy (SMA) actuator includes an SMA element and a flexible outer coating or layer. The element is respectively activated by a heating source. The layer surrounds the element, and enhances the heat transfer characteristics of the element to increase the speed of the actuation cycle. The nominal geometry and/or thermal conductivity may be altered during an activation phase, and may include discrete elements oriented with respect to the element, and partially embedded in the layer. An end gripper assembly may be used to cause the layer to move in concert with the element during a phase transformation. An electro-mechanical system includes the cooling source and the actuator. A method includes connecting the actuator to a load, activating the element using the heating source, and deactivating the element using a cooling source or free/ambient air.

    摘要翻译： 形状记忆合金（SMA）致动器包括SMA元件和柔性外涂层或层。 元件分别由加热源激活。 该层围绕元件，并且增强元件的传热特性以增加致动循环的速度。 标称几何形状和/或热导率可以在激活阶段期间改变，并且可以包括相对于元件定向且部分地嵌入在该层中的分立元件。 可以使用端部夹持器组件，以在相变期间使层与元件一起移动。 机电系统包括冷却源和致动器。 一种方法包括将致动器连接到负载，使用加热源激活元件，以及使用冷却源或空气/环境空气来去激活元件。

    COOLING SYSTEM
    66.
    发明申请
    COOLING SYSTEM 有权
    冷却系统

    公开(公告)号：US20110121582A1

    公开(公告)日：2011-05-26

    申请号：US12947857

    申请日：2010-11-17

    申请人： Paul W. Alexander ,  Alan L. Browne ,  Nancy L. Johnson ,  Patrick B. Usoro ,  Nilesh D. Mankame ,  Xiujie Gao ,  Geoffrey P. McKnight ,  John A. Cafeo ,  Christopher P. Henry

    发明人： Paul W. Alexander ,  Alan L. Browne ,  Nancy L. Johnson ,  Patrick B. Usoro ,  Nilesh D. Mankame ,  Xiujie Gao ,  Geoffrey P. McKnight ,  John A. Cafeo ,  Christopher P. Henry

    IPC分类号： F03G7/06 ,  F28D15/00 ,  H02K7/18

    CPC分类号： F03G7/06

    摘要： A cooling system configured for converting thermal energy to mechanical energy includes a source of thermal energy provided by a temperature difference between a heat source having a first temperature and a coolant having a second temperature that is lower than the first temperature. The cooling system includes a cooling circuit configured for conveying the coolant to and from the heat source. The cooling circuit includes a conduit and a pump in fluid communication with the conduit and configured for delivering the coolant to the heat source. The cooling system also includes a heat engine disposed in thermal relationship with the conduit and configured for converting thermal to mechanical energy. The heat engine includes a first element formed from a first shape memory alloy having a crystallographic phase changeable between austenite and martensite at a first transformation temperature in response to the temperature difference between the heat source and coolant.

    摘要翻译： 构造成将热能转换为机械能的冷却系统包括由具有第一温度的热源和具有低于第一温度的第二温度的冷却剂之间的温度差提供的热能源。 冷却系统包括冷却回路，该冷却回路构造成将冷却剂输送到热源。 冷却回路包括导管和与导管流体连通的构造成将冷却剂输送到热源的泵。 冷却系统还包括与导管热关系设置的热引擎，并被配置为将热转换成机械能。 热机包括由第一形状记忆合金形成的第一元件，该第一形状记忆合金在第一相变温度下响应于热源和冷却剂之间的温度差，具有在奥氏体和马氏体之间可变化的结晶相。