Valves and valve actuation – Electrically actuated valve – Including solenoid
Patent
1982-10-14
1985-10-15
Rosenthal, Arnold
Valves and valve actuation
Electrically actuated valve
Including solenoid
25112910, 335267, 335268, F16K 3106
Patent
active
045469555
ABSTRACT:
A two-stage solenoid valve uses a pair of stacked coaxial armatures separated by a predetermined gap which is maintained by a first spring therebetween. A coaxial connecting rod extends between a first armature and the second armature and is attached to the first armature. A head on the unattached end of the rod bears against a bottom surface of a recess in the second armature to limit the expansion of the first spring. A second spring is arranged to contact the head of the rod and to extend therefrom to a fixed plug in the end of a cylindrical housing surrounding the first and second armatures. The first armature is provided with a fluid sealing surface on a first end for sealing an adjacent fluid port in the valve in response to the spring force exerted by the second spring. A first and a second solenoid coil assembly are coaxially stacked to surround the cylindrical sleeve housing adjacent to respective ones of the first and second armatures. The coils are connected in series with a center tap connection therebetween to allow either parallel or single coil energization. Selective energization of the first and second electromagnetic solenoid coil assemblies is used to control the positioning of the first and second armatures to provide a first and a second spacing of the sealing surface from the orifice during an open state of the valve to provide a first and a second flow rate, respectively, through the valve.
REFERENCES:
patent: 2901210 (1959-08-01), Hebard
patent: 3421546 (1969-01-01), Jennings et al.
patent: 3424429 (1969-01-01), Monnich
patent: 3623583 (1971-11-01), Shimanckas
patent: 4056255 (1977-11-01), Lace
patent: 4342443 (1982-08-01), Wakeman
patent: 4361309 (1982-11-01), Sogabe
Beyer Kenneth E.
Horlacher Wilhelm H.
Halista Mitchell J.
Honeywell Inc.
Joike Trevor B.
Rosenthal Arnold
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