SOLENOID CHANGING SLEEVE VALVE WITH ARCH-SHAPED SLOTS SOLENOID CHANGING SLEEVE VALVE WITH ARCH-SHAPED SLOTS, CAPABLE OF MINIMIZING PRESSURE EFFECT FROM A FLOW IN A RADIAL PORT BUMPING AGAINST THE LATERAL SIDE OF A SLEEVE PORT

摘要

PURPOSE: A solenoid changing sleeve valve is provided to minimize pressure effect from a flow in a radial port bumping against the lateral side of a sleeve port and to generate a biasing or automatic motion of a sleeve regardless of solenoid energization by forming a valve port like an arch-shaped slot. CONSTITUTION: A normal opening solenoid-changing valve assembly comprises a body(12) composed of one end with an inlet port formed at the body and a plurality of horizontal valving ports arranged on the centrifugal surface of one end in the arrangement separated to a peripheral part and connected with the input port; an annular armature(44) disposed through the valving port in a firmly fixed sliding arrangement; a coil(30) aligned around the armature; and a flux collector(22) installed adjacently to one end of the armature to form a working air gap. The annular armature has a plurality of arch-shaped extension slots(64) for valving an outlet port.