Solenoid valve for flow rate control

Details Solenoid valve for flow rate control Solenoid valve for flow rate control

1996-05-17

1998-03-17

Lee, Kevin

Valves and valve actuation

Electrically actuated valve

Including solenoid

251 65, F16K 3108

Patent

active

057277699

ABSTRACT:
A solenoid valve is disclosed and includes a solenoid, a plunger made of a magnetic material, and a yoke receiving the plunger therein such that the plunger may be moved by the magnetic field produced by the solenoid. A valve element is connected to the plunger for controlling the rate of flow through the solenoid valve. A permanent magnet is disposed in a desired position outside the yoke. The magnetic flux of the magnetic field of the permanent magnet is effectively used for damping the oscillation of the plunger to thereby achieve excellent controllability of the valve.

REFERENCES:
patent: 4738430 (1988-04-01), Pichon
patent: 5029807 (1991-07-01), Fuchs
patent: 5035306 (1991-07-01), Ashiba

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