Solenoid controlled fluid valve

Details Solenoid controlled fluid valve Solenoid controlled fluid valve

1987-06-02

1988-12-20

Rosenthal, Arnold

Fluid handling

Line condition change responsive valves

Direct response valves

25112902, 25112908, 25112921, 25112918, F16K 3106, G05D 706

Patent

active

047919582

ABSTRACT:
A normally open pilot pressure relief valve wherein the opening pressure can be readily controlled by small amounts of electrical power, which does not employ a spring, has improved pressure versus flow characteristics at both high and low pressures. The solenoid-armature magnetic circuit is so configured that: in the designed range of valve opening movement, the magnetic force-displacement curve of the armature has a slope which increases with increasing amounts of solenoid energization. The relieved fluid flows through a longitudinal passage in the armature creating an opening flow force to compensate for the Bernoulli effect at the valve seat as the valve opens. Adjustment means are provided for accurately positioning the armature in its magnetic circuit to compensate for manufacturing tolerances.

REFERENCES:
patent: 3069846 (1962-12-01), Buescher
patent: 3791408 (1974-02-01), Saitou et al.
patent: 3945399 (1976-03-01), Tirelli
patent: 4206781 (1980-06-01), Salter
patent: 4268009 (1981-05-01), Allen, Jr.
patent: 4339109 (1982-07-01), Kawata et al.

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