US 6,886,802 B2Granted

Electromagnetically-actuated two-way valve

AssigneeEdi System s.r.l.

InventorsMarco Bartolacelli, Sergio Acerbi, Reggiani Claudio

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Abstract

An electromagnetically-actuated two-way two-position valve is normally closed and comprises an axially-mobile group (5) which has an upper end (5a) that faces a fixed group (6) and which is attracted thereby. An obturator (4) is intercepted and then drawn in an opening movement by the mobile group (5) when the mobile group (5) is at a short distance from an end of its run. A return spring (9), which displaced the obturator (4) towards a closed position when the fixed group is deactivated, is entirely located behind the upper end (5a) of he mobile group (5). An air gap (8) is comprised, in a radial direction, between a coil (7) for activating the fixed group (6) and the upper end (5a) of the mobile group (5). The valve is constructionally simple and economical and has a higher fatigue resistance than known valves.

Claims9

Dependent claims

An electromagnetically-actuated two-way valve, for commanding a passage of a fluid, which valve is normally closed and comprises:

a fixed group (6) which is electromagnetically actuated;
a mobile group (5) which in an axial direction exhibits an upper end (5a) which faces the fixed group (6) and is attracted thereby;
an obturator (4) which is axially mobile between an open position and a closed position of a seating which seating is used for the passage of the fluid;
when in the closed position the obturator (4) being intercepted and drawn by the mobile group (5) in an opening movement, when the mobile group (5) is at a short distance from an end of a run towards the fixed group (6), the run being induced by force of electromagnetic attraction;
a return spring (9) predisposed to displace the obturator (4) towards the closed position when the fixed group (6) is deactivated;
wherein the return spring (9) is entirely situated behind the upper end (5a) of the mobile group (5), which faces the fixed group (6).

3 more elements

Dependencies are inferred from the claim text.