Solenoid fluid valves

Details Solenoid fluid valves Solenoid fluid valves

1975-05-09

1977-09-06

Rosenthal, Arnold

Valves and valve actuation

Electrically actuated valve

Remote or follow-up control system for electrical actuator

335244, 335262, 251141, F16K 3106, H01F 713

Patent

active

040463516

ABSTRACT:
A solenoid valve wherein a conical tip of a cylindrical plunger armature seals a flow-limiting orifice in an elastic valve-seat annulus, enabling minimum armature travel per unit of flow. The resulting short-gap, combined with a thin-walled armature housing and an efficient unitary exterior magnetic yoke yields a low reluctance magnetic circuit, and a high impedance solenoid. Wattage demand is reduced in both inrush and steady-state conditions. Choice of gap dimension and annulus design enables a low wattage demand, substantially free from variable fluid pressure effects. The use in combination of a unitary dual-path exterior magnetic loop, with a ferrous armature housing, and a novel phase-splitting core enable operation at still further reduced wattage values. Size, copper usage, temperature rise and cost are held to low values previously unattainable.

REFERENCES:
patent: 959618 (1910-05-01), Schmidt
patent: 1664613 (1928-04-01), French
patent: 2544209 (1951-03-01), Wolcott
patent: 2629766 (1953-02-01), Vargo
patent: 2853659 (1958-09-01), Herion
patent: 2863628 (1958-12-01), Rimsha et al.
patent: 2888237 (1959-05-01), Dahl
patent: 3082359 (1963-03-01), Mangiafico et al.
patent: 3235223 (1966-02-01), Wintress
patent: 3262027 (1966-07-01), Zaleske et al.
patent: 3512749 (1970-05-01), Noakes et al.

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