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    Pressure devices
    1.
    发明公开
    Pressure devices 失效
    压力装置

    公开(公告)号：EP0511880A3

    公开(公告)日：1993-05-12

    申请号：EP92303988.7

    申请日：1992-05-01

    申请人： PALL CORPORATION

    发明人： Cassidy, Ronald Frederick

    IPC分类号： H01H35/26 ,  H01H35/38 ,  H01H36/00

    CPC分类号： H01H35/38 ,  H01H35/2692 ,  H01H36/0006

    摘要： A pressure indication device comprises a housing (ll) including a bore (l3) in which is received a slidable piston (l4). The piston (l4) has two end faces (l9,40), one of which is for connection to a source of fluid at higher pressure and the other of which is for connection to a source of fluid at lower pressure. The device produces an indication when the pressure differential reaches a predetermined value. In an inoperative position of the piston (l4), a portion (2l) of the upstream face (l9) operates with the bore (l3) to provide a seal which reduces leakage between the bore (l3) and the piston (l4) and which also reduces the effective area of the upstream face (l9). In addition, a labyrinth seal (l8) is provided between the bore (l3) and the piston (l4). When the predetermined pressure is reached, the piston (l4) moves, and as it does so, the effective area of the upstream face (l9) is increased. This causes increasingly rapid movement of the piston (l4) so providing a very positive indication that predetermined pressure has been reached and so overcoming any tendency of the piston (l4) to stick or move only very gradually as the predetermined pressure is reached.

    Druckabhängig gesteuerter Schalter.
    2.
    发明公开
    Druckabhängig gesteuerter Schalter. 失效
    压力依赖性受控开关。

    公开(公告)号：EP0206132A2

    公开(公告)日：1986-12-30

    申请号：EP86107993

    申请日：1986-06-11

    申请人： HONEYWELL BV

    发明人： BERKHOF HENDRIKUS

    IPC分类号： F23N5/24 ,  H01H35/26

    CPC分类号： F23N5/247 ,  H01H35/2692 ,  Y10T137/2278

    摘要： Zur Überwachung niedriger Luft- oder Gasdrücke mittels eines über eine Membran (3) betätigbaren elektrischen Schalters (8) wird der zu überwachende Druck zunächst pneumatisch verstärkt. Er wirkt auf die den Schließkörper (16) eines Abblasventils (15, 16) tragende Membran (17) eines pneumatischen Verstärkers ein, der über eine Drossel (14) mit einem Versorgungsdruck (PG) gespeist wird (Fig. 1).

    摘要翻译： 对于由膜（3）致动的电开关（8）的装置监测低的空气或气体的压力，要被监视的压力被第一气动扩增。 它作用于携带气动放大器，其经由节气门（14）的供给压力（PG）（图1）供给的所述隔膜（17）的吹开闭阀（15，16）的封闭体（16）。

    Pressure devices
    3.
    发明公开
    Pressure devices 失效
    Druckeinrichtungen。

    公开(公告)号：EP0511880A2

    公开(公告)日：1992-11-04

    申请号：EP92303988.7

    申请日：1992-05-01

    申请人： PALL CORPORATION

    发明人： Cassidy, Ronald Frederick

    IPC分类号： H01H35/26 ,  H01H35/38 ,  H01H36/00

    CPC分类号： H01H35/38 ,  H01H35/2692 ,  H01H36/0006

    摘要： A pressure indication device comprises a housing (ll) including a bore (l3) in which is received a slidable piston (l4). The piston (l4) has two end faces (l9,40), one of which is for connection to a source of fluid at higher pressure and the other of which is for connection to a source of fluid at lower pressure. The device produces an indication when the pressure differential reaches a predetermined value. In an inoperative position of the piston (l4), a portion (2l) of the upstream face (l9) operates with the bore (l3) to provide a seal which reduces leakage between the bore (l3) and the piston (l4) and which also reduces the effective area of the upstream face (l9). In addition, a labyrinth seal (l8) is provided between the bore (l3) and the piston (l4). When the predetermined pressure is reached, the piston (l4) moves, and as it does so, the effective area of the upstream face (l9) is increased. This causes increasingly rapid movement of the piston (l4) so providing a very positive indication that predetermined pressure has been reached and so overcoming any tendency of the piston (l4) to stick or move only very gradually as the predetermined pressure is reached.

    摘要翻译： 压力指示装置包括包括孔（13）的壳体（11），其中容纳有可滑动的活塞（14）。 活塞（14）具有两个端面（19,40），其中一个端面用于连接到较高压力下的流体源，另一端用于连接到较低压力的流体源。 当压力差达到预定值时，该装置产生指示。 在活塞（14）的不工作位置，上游面（19）的一部分（21）与孔（13）一起工作以提供密封，其减小孔（13）和活塞（14）之间的泄漏，以及 这也减少了上游面的有效面积（19）。 此外，在孔（13）和活塞（14）之间设置迷宫式密封件（18）。 当达到预定压力时，活塞（14）移动，并且如此，上游面（19）的有效面积增加。 这导致活塞（14）的越来越快的运动，从而提供非常正的指示，即已经达到预定的压力，并且因此克服了当达到预定压力时活塞（14）只能非常缓慢地移动或移动的任何趋势。

    Druckabhängig gesteuerter Schalter
    4.
    发明公开
    Druckabhängig gesteuerter Schalter 失效
    作为压力的功能控制的开关

    公开(公告)号：EP0206132A3

    公开(公告)日：1989-05-24

    申请号：EP86107993.7

    申请日：1986-06-11

    申请人： HONEYWELL B.V.

    发明人： Berkhof, Hendrikus

    IPC分类号： H01H35/26

    CPC分类号： F23N5/247 ,  H01H35/2692 ,  Y10T137/2278

    摘要： Zur Überwachung niedriger Luft-oder Gasdrücke mittels eines über eine Membran (3) betätigbaren elektrischen Schalters (8) wird der zu überwachende Druck zunächst pneumatisch verstärkt. Er wirkt auf die den Schließkörper (16) eines Abblasventils (15, 16) tragende Membran (17) eines pneumatischen Verstärkers ein, der über eine Drossel (14) mit einem Versorgungsdruck (P G ) gespeist wird (Fig. 1).

    Pressure responsive control device
    8.
    发明公开
    Pressure responsive control device 失效
    DruckabhängigeRegelvorrichtung。

    公开(公告)号：EP0036792A1

    公开(公告)日：1981-09-30

    申请号：EP81400307.5

    申请日：1981-02-27

    申请人： THE BENDIX CORPORATION

    发明人： McCombs, Howard L. Jr.

    IPC分类号： H01H35/24

    CPC分类号： H01H35/28 ,  H01H35/2692

    摘要： A pressure responsive control device, particularly for controlling the operation of a pump to maintain the pressure level of a fluid in a reservoir within a predetermined pressure range, comprising a sensor which compares said pressure level with a reference pressure (atmospheric air) and a switch which is actuated by said sensor as a function of the difference between said pressures and which itself controls the operation of the pump.
    According to this invention, the force exerted by the pressure difference on a first movable wall (38, 48) which closes a first chamber (30) in the sensor (18) is opposed by a lesser force exerted by same pressure difference on a second movable wall (52, 58) which separates said first chamber (30) from a second chamber (32) which itself is connectable either to the reference pressure or to the first chamber as a result of the displacement of said walls, thus providing for snap actuation of the associated switch (16).
    For use particularly in controlling operation of vacuum pumps in automotive vehicles.

    摘要翻译： 一种压力响应控制装置，特别是用于控制泵的操作以将储存器中的流体的压力水平维持在预定压力范围内，包括将所述压力水平与参考压力（大气）和开关 其由所述传感器驱动，作为所述压力之间的差异的函数，并且其本身控制所述泵的操作。 根据本发明，通过压力差施加的关闭传感器（18）中的第一室（30）的第一可移动壁（38,48）的力由相同的力施加相反的力 在第二可移动壁（52,58）上的压差，其将所述第一室（30）与第二室（32）分开，第二室（32）本身可连接到参考压力或第一室 ，从而提供相关开关（16）的卡扣致动。 ...特别适用于控制汽车中真空泵的运行。