Proportional solenoid valve

Details Proportional solenoid valve Proportional solenoid valve

F - Mech Eng,Light,Heat,Weapons

16

K

251/14

F16K 31/06 (2006.01) F02M 51/06 (2006.01) F02M 61/16 (2006.01) H01F 7/13 (2006.01)

Patent

CA 1232592

PROPORTIONAL SOLENOID VALVE ABSTRACT: A diaphragm operated valve assembly is con- trolled by an electromagnetic valve assembly (10). A flat disc armature (422), which forms part of a flux path, is operable in an inner chamber (118)to modulate the flow between the inner chamber (118) and an exit port (28) in response to an applied magnetic force. The level of the effective magnetic force is a function of the armature mass (422), the pressure acting on the disc surface and the magnetic reluctance. A pole piece (416) adjacent to the flat disc armature (422) includes a seat (20) and is at a fixed distance from the armature (422). Variation of an air gap (x) provides a means to adjust the magnetic reluctance of the electromagnetic valve (10) after its final assembly and in this case an adjustment air gap is provided at the top member (414) of the flux path. Such valves may thus be calibrated to operate at various pressure or flow rates as a func- tion of electrical power input, that is a variation of current or voltage. These electrical power variations determine at what operating condition the flat disc armature (422) will contact the seat (20) and seal fluid flow.

457047

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