ELECTROPNEUMATIC VALVE Russian patent published in 2003 - IPC

FIELD: electromagnetic distributing devices. SUBSTANCE: electropneumatic valve has body with electromagnetic drive, intake channel and controlled channel of working medium discharge. Electromagnetic drive is made in form of two coating cylindrical, E-shaped in cross-section cores with control windings and recesses, and two armatures installed on road ends with piston in the middle. Body is made with two cylindrical cavities. Introduced into each cylindrical cavity are intake channel and channel for working medium discharge with axial hole for piston and radial hole for drainage in transverse wall between cavities. Cores are installed in cavities flat with body end surface. Recesses on core surfaces communicate discharge channel with piston having circular groove for drainage and effective area equaling that of discharge channel. Each discharge channel is made ion form of circular nozzle profiled between body internal walls and core external walls. Armatures diameter is not less than nozzle outer diameter. EFFECT: higher operating characteristics of electropneumatic valves due to working medium pressure relief. 2 cl, 1 dwg