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    • 21. 发明申请
    • Valve for fluids having a diaphragm shutter controlled by shape memory means acting also as defrosting means
    • 具有由形状记忆装置控制的光阑快门的液体的阀也用作除霜装置
    • US20070051911A1
    • 2007-03-08
    • US11515773
    • 2006-09-06
    • Marco BiasiottoFrancesco ButeraStefano AlacquaAlessandro Zanella
    • Marco BiasiottoFrancesco ButeraStefano AlacquaAlessandro Zanella
    • F16K31/02
    • F25D17/045F16K31/025
    • Described herein is a valve for fluids, liquids or dusts, which can be used to particular advantage for controlling openings for passage of cooling air in refrigerating apparatuses or the like. The valve comprises a diaphragm open/close element having a central part and a peripheral edge connected, respectively, to a central support and to a peripheral support. Said supports are axially displaceable with respect to one another between a first relative end position and a second relative end position corresponding, respectively, to the open condition and to the closed condition of the valve, or vice versa. The relative displacement in an axial direction of said first and second supports is controlled by shape-memory means, including at least one shape-memory wire, which extends at least in part along the periphery of the diaphragm and is activated by electrical supply means. The heating of the wire is exploited to remove any possible formation of ice or frost that might tend to prevent correct movement of the diaphragm.
    • 这里描述的是用于流体,液体或粉尘的阀门,其特别可用于控制制冷装置等中冷却空气通过的开口。 阀包括隔膜开/关元件,其具有分别连接到中心支撑件和外围支撑件的中心部分和外围边缘。 所述支撑件可以在分别对应于打开状态和阀的关闭状态的第一相对端部位置和第二相对端部位置之间相对于彼此轴向移位,反之亦然。 所述第一和第二支撑件的轴向方向上的相对位移由形状记忆装置控制,所述形状记忆装置包括至少一个形状记忆线,所述至少一个形状记忆线至少部分地沿着所述隔膜的周边延伸并且由供电装置启动。 利用电线的加热来消除任何可能形成的冰或霜,这可能倾向于阻止隔膜的正确移动。
    • 23. 发明授权
    • Discrete step rotary actuator
    • 离散步进旋转执行器
    • US07076951B2
    • 2006-07-18
    • US10523249
    • 2004-02-23
    • Alessandro ZanellaFrancesco ButeraStefano Alacqua
    • Alessandro ZanellaFrancesco ButeraStefano Alacqua
    • F01B29/10
    • H02N2/101F03G7/065
    • A discrete step rotary actuator (1) comprises a stator (2), a rotor (3) and at least an actuating element (10) made with a shape memory active material, the actuating element (10) having a first portion (11) anchored to said stator and a second portion with a terminal element (12). The rotor has a sequence of seatings (14) arranged as a circumference, into which the terminal element (12) can engage in a sequential way. Elastic means (13) placed between the actuating element (10) and the stator (2) induce the shift of the terminal element (12) between two consecutive seatings (14), during the passage of the active material from its shortened to its extended configuration. The passage of the active material from the extended configuration to its shortened configuration imparts the rotor (3) a rotation couple with respect to the stator (2).
    • 离散步进旋转致动器(1)包括定子(2),转子(3)和至少由形状记忆活性材料制成的致动元件(10),所述致动元件(10)具有第一部分(11) 锚固到所述定子和具有端子元件(12)的第二部分。 转子具有排列成圆周的一系列座(14),端子元件(12)可以以顺序的方式啮合到座中。 放置在致动元件(10)和定子(2)之间的弹性装置(13)在活动材料从其缩短的延伸到其延伸的过程中引起端子元件(12)在两个连续的座(14)之间的移动 组态。 活性材料从延伸构型到其缩短构型的通过赋予转子(3)相对于定子(2)的旋转耦合。