Valves and valve actuation – Electrically actuated valve – Having means to produce digital pulses
Patent
1984-08-21
1986-06-17
Rosenthal, Arnold
Valves and valve actuation
Electrically actuated valve
Having means to produce digital pulses
25112901, 25112907, 25112908, 25112922, F16K 3106
Patent
active
045951705
ABSTRACT:
A solenoid valve includes a valve body (3), a ferromagnetic fluid flow damper (4) cooperating with a seat (6), to form a fluid sealing surface, an electromagnetic field coil (11) for selectively displacing the damper (4) against the action of a spring (7) by a magnetic field produced by an energization of the coil, an intake conduit (19) and an outlet conduit (20). The valve body (3) is housed in a cylindrical chamber (2) of a hydraulic unit (1) with an internal fluid intake pipe (14) and an internal fluid outlet pipe (22), communicating with their respective fluid intake (19) and outlet (20) conduits in the valve body (3). A flexible joint (16) connects the wall of the cylindrical chamber (2) with the rim of the intake conduit (19) and a compression spring (23) is located between the lower side (24) of the body (3) and the hydraulic unit (1) to provide an elastic suspension for the body (3). This arrangement enables gradual interruption of the flowing liquid when the valve closes by the damper (4) being impelled into the seat (6) by the spring (7) to eliminate water hammer. It is thus possible to regulate pressure in an fluid bypass application installation following a linear function of the ratio of the valve opening time to the total current cycle supplying the coil (11).
REFERENCES:
patent: 3441246 (1969-04-01), Lauppe et al.
patent: 3470892 (1969-10-01), Barker
patent: 3653630 (1972-04-01), Ritsema
patent: 4210311 (1980-07-01), Stone
patent: 4376447 (1983-03-01), Chumley
Halista Mitchell J.
Honeywell Lucifer S.A.
Joike Trevor B.
Rosenthal Arnold
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