| 摘要 |
<p>SOLENOID CONTROLLED FLUID FLOW VALVE A remotely controllable fluid valve includes a solenoid armature arrangement which functions as an electro-magnetic spring having improved force-displacement characteristics over a mechanical spring. The solenoid magnetizes a pair of axially spaced, sleevelike field poles. The armature is so shaped and initially positioned relative to the field poles that: as the armature, supported in one pole, moves further into the other pole, the axial magnetic force thereon decreases at a decreasing rate with the rate of decrease being greater at higher levels of solenoid energization. In one embodiment, the flow valve is pressure compensated and controls a larger flow valve. The valve seat is formed on a member separate from the housing which also slidingly supports the valve member. The surfaces supporting sliding members are electroless nickel coated to reduce friction.</p> |
