Solenoid controlled fluid flow valve

Details Solenoid controlled fluid flow valve Solenoid controlled fluid flow valve

F - Mech Eng,Light,Heat,Weapons

16

K

137/38

F16K 11/10 (2006.01) F16K 17/02 (2006.01) F16K 31/06 (2006.01)

Patent

CA 1235043

SOLENOID CONTROLLED FLUID FLOW VALVE ABSTRACT 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.

470609

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