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    • 16. 发明授权
    • Snap-through thermal actuator
    • 卡通式导热器
    • US06953240B2
    • 2005-10-11
    • US11015999
    • 2004-12-18
    • Antonio CabalJohn A. LebensDavid P. TrauernichtDavid S. Ross
    • Antonio CabalJohn A. LebensDavid P. TrauernichtDavid S. Ross
    • B41J2/14B41J2/04B41J2/05
    • B41J2/14B41J2002/14346
    • A snap-through thermal actuator for a micro-electromechanical device, for example, a liquid drop emitter or a fluid control microvalve, is disclosed. The snap-through actuator includes a base element formed with a depression having opposing anchor edges which define a central plane. A deformable element, attached to the base element at the opposing anchor edges, is constructed as a planar lamination including a first layer of a first material having a low coefficient of thermal expansion and a second layer of a second material having a high coefficient of thermal expansion. The deformable element is formed to have a residual shape bowing outward from the central plane in a first direction away from the second layer. The snap-through thermal actuator further includes apparatus adapted to apply a heat pulse to the deformable element which causes a sudden rise in the temperature of the deformable element.
    • 公开了一种用于微机电装置的卡通式热致动器,例如液滴发射器或流体控制微型阀。 卡通贯通致动器包括形成有凹部的基部元件,该凹陷具有限定中心平面的相对的锚定边缘。 在相对的锚边缘处附接到基体元件的可变形元件被构造为平面层压,其包括具有低热膨胀系数的第一材料的第一层和具有高热系数的第二材料的第二层 扩张。 可变形元件形成为具有从远离第二层的第一方向从中心平面向外弯曲的残留形状。 卡通式热致动器还包括适于向可变形元件施加热脉冲的装置,其引起可变形元件的温度的突然升高。
    • 17. 发明授权
    • Snap-through thermal actuator
    • 卡通式导热器
    • US06948800B2
    • 2005-09-27
    • US11016000
    • 2004-12-18
    • Antonio CabalJohn A. LebensDavid P. TrauernichtDavid S. Ross
    • Antonio CabalJohn A. LebensDavid P. TrauernichtDavid S. Ross
    • B41J2/14B41J2/04B41J2/05
    • B41J2/14B41J2002/14346
    • A snap-through thermal actuator for a micro-electromechanical device such as a liquid drop emitter or a fluid control microvalve is disclosed. The snap-through actuator is comprised of a base element formed with a depression having opposing anchor edges which define a central plane. A deformable element, attached to the base element at the opposing anchor edges, is constructed as a planar lamination including a first layer of a first material having a low coefficient of thermal expansion and a second layer of a second material having a high coefficient of thermal expansion. The deformable element is formed to have a residual shape bowing outward from the central plane in a first direction away from the second layer. The snap-through thermal actuator further comprises apparatus adapted to apply a heat pulse to the deformable element which causes a sudden rise in the temperature of the deformable element. The deformable element initially bows farther outward in the first direction, then, due to thermomechanical torque's acting at the opposing anchor edges, reverses and snaps through the central plane to bow outward in a second direction toward the second layer, and then relaxes to the residual shape as the temperature decreases. The snap-through thermal actuator is configured with a liquid chamber having a nozzle, a fluid flow port to form a liquid drop emitter or a fluid control microvalve, or to activate an electrical microswitch. Heat pulses are applied to the deformable element by resistive heating or by light energy pulses.
    • 公开了一种用于诸如液滴发射器或流体控制微型阀的微机电装置的卡通式热致动器。 卡通贯通致动器包括形成有凹部的基座元件,该凹陷部具有限定中心平面的相对的锚定边缘。 在相对的锚边缘处附接到基体元件的可变形元件被构造为平面层压,其包括具有低热膨胀系数的第一材料的第一层和具有高热系数的第二材料的第二层 扩张。 可变形元件形成为具有从远离第二层的第一方向从中心平面向外弯曲的残留形状。 卡通式热致动器还包括适于向可变形元件施加热脉冲的装置,其引起可变形元件的温度的突然上升。 可变形元件最初在第一方向向外弯曲,然后,由于热机械扭矩作用在相对的锚定边缘处,反转并咬合通过中心平面,朝向第二层向第二方向向外弯曲,然后松弛到残余物 随着温度的降低形状。 卡通式热致动器配置有具有喷嘴的液体室,用于形成液滴发射器的流体流动端口或流体控制微型阀,或者激活电微型开关。 加热脉冲通过电阻加热或光能脉冲施加到可变形元件。