SOLENOID VALVE WITH SPHERICAL ARMATURE

摘要

A valve includes (10) a valve body (18), a flux tube (30), and a winding (38). The body defines first (26) and second (28) passageways, and a circular opening (24) is defined in the second passageway (28) providing fluid communication between the passageways (26,28). The flux tube (30) has a closed (32) end, an open (34) end, and a hollow armature receiving section (36). The open end (34) is in fluid communication with the first passageway (26) . A spherical armature (14) is disposed in the armature receiving section (36) for reciprocating movement between a closed position sealing against the circular opening 24) to prevent communication between the passageways (26,28) and an open position spaced apart from the opening (24) permitting communication between the passageways (26,28). The winding (38) is disposed about the flux tube (30) for electromagnetically positioning the armature (14). The flux tube (30) forms a fluid tight pressure boundary between the winding (38) and the passageways (26,28). A spring (40) urges the armature toward one of the open position and the closed position.