Solenoid valve

Details Solenoid valve Solenoid valve

1984-09-20

1985-12-31

Scott, Samuel

Valves and valve actuation

Electrically actuated valve

Including solenoid

251 65, 25112920, 13762544, 335234, F16K 3107

Patent

active

045616329

ABSTRACT:
A solenoid valve for liquid and gaseous media whose valve closure piece or pieces (24) can be actuated by an armature (20') which is movable relative to the valve seat or seats (18, 19) is disclosed. The armature lies in the magnetic field of at least one electromagnet (4, 5) and of at least one permanent magnet (10) arranged outside the field of the electromagnet. The valve is closed via the armature (20') and has operating air gaps which change in opposite directions upon a movement of the armature. The electromagnet is provided with a core (4) whose ends form three magnet poles (10, 11, 12). The armature (20') which contains the permanent magnet (21) has two pole pieces (20') which extend between the three magnet poles (10, 11, 12) of the electromagnet to form four operating air gaps, the pole pieces being combined with the permanent magnet and connected with them to form as assembly.

REFERENCES:
patent: 2160117 (1939-05-01), Borresen
patent: 3399861 (1968-09-01), Howland
patent: 3532121 (1970-10-01), Sturman et al.
patent: 4285497 (1981-08-01), Gottel
patent: 4310143 (1982-01-01), Determan
patent: 4343329 (1982-08-01), Turansky et al.
patent: 4397443 (1983-08-01), Watanabe et al.

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