초록 ▼

A solenoid comprising a solenoid coil having a longitudinal hole at the center of a bobbin made of a non-magnetic material and a coil winding wound around the peripheral wall of the bobbin. A yoke comprising a peripheral side plate, an upper end plate and a lower end plate all for the covering the o

A solenoid comprising a solenoid coil having a longitudinal hole at the center of a bobbin made of a non-magnetic material and a coil winding wound around the peripheral wall of the bobbin. A yoke comprising a peripheral side plate, an upper end plate and a lower end plate all for the covering the outer peripheral surface and both end surfaces of solenoid coil, a pole core disposed at one end of the longitudinal hole and a plunger fitted slidably into the other end of the longitudinal hole. The solenoid further comprises a protrusion member for forming an irregular magnetic field, formed integrally at the center of the yoke, and a recess for fitting the protrusion member from the end surface of the peripheral wall of the bobbin formed in the peripheral wall. A diaphragm of a solenoid valve for opening and closing a main valve port, opened and closed by the movement of the plunger operating at a constant stroke above a predetermined feed water pressure and at a stroke proportional to the water drainage pressure below the predetermined feed water pressure.

대표청구항 ▼

[ What is claimed is:] [19.] A solenoid valve comprising a diaphragm having a pilot valve hole and a bleed hole and a pin penetrating through said bleed hole where a main valve hole is opened and closed by opening and closing said pilot valve hole by a movement operation of a plunger of a solenoid,

[ What is claimed is:] [19.] A solenoid valve comprising a diaphragm having a pilot valve hole and a bleed hole and a pin penetrating through said bleed hole where a main valve hole is opened and closed by opening and closing said pilot valve hole by a movement operation of a plunger of a solenoid, a strainer being installed on a primary side of water supply of said solenoid valve, and a sectional area of a gap between said bleed hole and said pin being fixed to be substantially equal to or larger than a mesh of said strainer.