SOLENOID VALVE Russian patent published in 2015 - IPC F16K31/06 

FIELD: electricity.

SUBSTANCE: invention refers to solenoid valve, solenoid part of which features a frame bearing a winding, and a sleeve is mounted on internal peripheral surface of the frame. The sleeve is made out of magnetic material and features a cylindrical section and a flange at lower end of the cylindrical section, while upper end of the cylindrical section forms a trapeze-formed part with outer peripheral surface deepened inwards in radial direction. In addition, trapeze-formed part is mounted so that it is turned aside and adjoins outer peripheral surface of immobile iron core tightly, and upon excitation of solenoid part, magnetic flux density in trapeze-formed part increases.

EFFECT: increased traction force affecting mobile iron core, reduced number of assembly process stages.

11 cl, 6 dwg