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    • 1. 发明授权
    • Temperature triggered actuator
    • 温度触发执行器
    • US07950590B2
    • 2011-05-31
    • US12048305
    • 2008-03-14
    • Murat OcalanKuo Chiang Chen
    • Murat OcalanKuo Chiang Chen
    • G05D23/00F16K31/08
    • E21B43/2406E21B34/06E21B34/08E21B41/00F16K31/002F16K31/06F16K31/383H01H37/58
    • An actuator is disclosed which operates on the principle of the variable magnetic properties of materials with respect to temperature. As temperature is raised past Curie temperature, magnetic permeability of certain materials drops significantly to a value close to free space permeability. However, depending on the material selection, magnetic permeability may be significantly higher below Curie temperature. This principle is used to cause magnetic attractive force to move an actuator at one temperature, while permitting a return spring force to move the actuator at another temperature by changing the pathway traversed by most magnetic lines of flux from a magnetic source. The actuator may be employed to provide a temperature activated electrical switch or fluid valve. The temperature activated valves are suited to use in high temperature environments, such as SAGD wells.
    • 公开了一种致动器,其以相对于温度的材料的可变磁特性的原理进行操作。 随着温度升高到居里温度,某些材料的磁导率显着下降到接近自由空间渗透率的值。 然而,根据材料选择,磁导率可能会高于居里温度以下。 该原理用于引起磁力吸引力以在一个温度下移动致动器,同时允许复位弹簧力通过改变来自磁源的通量的大部分磁线穿过的路径在另一个温度下移动致动器。 可以使用致动器来提供温度激活的电开关或流体阀。 温度启动阀适用于高温环境,如SAGD井。
    • 4. 发明授权
    • Switching relays
    • 开关继电器
    • US4745385A
    • 1988-05-17
    • US85325
    • 1987-08-11
    • Guglielmo Rossi
    • Guglielmo Rossi
    • H01H37/58H01H9/00
    • H01H37/58
    • A temperature compensated switching relay with thermally effected switching delay should be of simple and compact construction and reliable in switching with precisely adjustable switching delay. For this purpose, the switching relay comprises a switching member (1) movable between two end positions and bearing a permanent magnet (2), with an inherent snapping action to actuate at least one switching contact (6), on opposite sides of the permanent magnet (2) in its direction of movement a first and a second paramagnetic member (3, 4) is provided, on the first paramagnetic member (3) a PTC resistor (5) feedable by a source of current is mounted, and in the end position of the switching member (1) at the second paramagnetic member (4) the distance (A) of the permanent magnet (2) from the first paramagnetic member (3) is less than its distance (B) from the second paramagnetic member (4). The ratios of the distances of the permanent magnet (2) from the paramagnetic members (3, 4) can expediently be adjusted.
    • 具有热效应开关延迟的温度补偿开关继电器应具有结构简单紧凑的结构,切换时间可靠,切换延迟精确。 为此,开关继电器包括可在两个端部位置之间移动并且具有永久磁体(2)的开关构件(1),其具有固定的卡扣动作,以致动永久物体的相对侧上的至少一个开关触点(6) 在第一顺磁部件(3)上提供磁体(2)沿其运动方向的第一和第二顺磁部件(3,4),安装由电流源供给的PTC电阻器(5),并且在 切换部件(1)在第二顺磁部件(4)处的终止位置,永磁体(2)与第一顺磁部件(3)的距离(A)小于与第二顺磁部件(3)的距离(B) (4)。 永磁体(2)与顺磁部件(3,4)的距离比可以方便地调整。
    • 5. 发明授权
    • Temperature-sensitive switch
    • 温度敏感开关
    • US4434411A
    • 1984-02-28
    • US356710
    • 1982-03-10
    • Philip M. Anderson, IIIJames E. KearneyScott E. Gordon
    • Philip M. Anderson, IIIJames E. KearneyScott E. Gordon
    • H01H37/58H01H61/013
    • H01H37/58
    • A temperature-sensitive switch is provided with a resilient movable cantilever composed of amorphous ferromagnetic material having a Curie point. The cantilever is adapted to carry a first contact member. A second contact member is disposed adjacent the first contact member for at least intermittently establishing electrical contact with the first contact member. A magnet is associated with and adapted to bias the cantilever to a first position that establishes electrical continuity between the first and second contact members. The cantilever is transformed from a ferromagnetic phase to a paramagnetic phase when its temperature exceeds the Curie point, whereby the cantilever assumes a second position in which the electrical conductivity is interrupted. The switch is lightweight, compact, economical to manufacture and reliable in operation.
    • 温度敏感开关设置有由具有居里点的非晶铁磁材料构成的弹性可移动悬臂。 悬臂适于承载第一接触构件。 第二接触构件设置成与第一接触构件相邻,用于至少间歇地建立与第一接触构件的电接触。 磁体与悬臂相关联并适于将悬臂偏置到在第一和第二接触构件之间建立电连续性的第一位置。 当其温度超过居里点时,悬臂从铁磁相转变为顺磁相,由此悬臂呈现中断导电性的第二位置。 该开关重量轻,结构紧凑,制造经济,操作可靠。