Solenoid valve with high flow capacity and low energy consumptio

Details Solenoid valve with high flow capacity and low energy consumptio Solenoid valve with high flow capacity and low energy consumptio

1990-09-20

1991-11-12

Rosenthal, Arnold

Valves and valve actuation

Electrically actuated valve

Including solenoid

25112907, 1374542, F16K 3106

Patent

active

050641662

ABSTRACT:
A solenoid valve for highly efficient control of high flow capacities comprises an armature formed as a sleeve having one end closing against the valve seat. A ring-shaped protrusion on the sleeve forms a conical surface facing a corresponding conical surface on a stationary part of the solenoid valve body separated by a predetermined gap to form magnetic poles within the magnetic flux path generated by the solenoid coil. The application of electrical current to the coil generates the magnetic force across the gap which displaces the sleeve in an axial direction toward a stop ring carried by the valve body. The end of the sleeve engaging the stop ring includes recesses for adjusting the net force when fluid pressure is exerted against the sleeve as it rests against the stop ring. The net force generated by the fluid pressure is slightly less than a spring force urging the sleeve toward its closed position so that a substantial decay of the magnetic field occurs before the sleeve is displaced when the current has been shut off to the coil. When the sum of the decayed magnetic force and the net fluid force drops below the force of the spring, displacement of the sleeve away from the stop ring exposes the end of the sleeve to hydraulic fluid force and immediately reduces the net fluid force to zero to quicken the response time of the armature.

REFERENCES:
patent: 3368789 (1968-02-01), Martin
patent: 4541610 (1985-09-01), Reynolds et al.
patent: 4883252 (1989-11-01), Mesenich
patent: 4917150 (1990-04-01), Koch et al.
patent: 4944486 (1990-07-01), Babitzka

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