| 摘要 |
<p>A solenoid actuated magnetically latched valve comprises a main housing (2) formed by an inner sleeve (5) and an outer sleeve (38) extending between respective end caps (7, 8). The inner sleeve (5) defines a valving chamber (10) into which fluid is delivered through a fluid inlet (17) in the end cap (7). A fluid outlet (18) in the end cap (8) delivers fluid from the valving chamber (10). An armature (11) terminates in a valving member (21) which is co-operable with a valve seat (22) in the end cap (8), and is axially slideable within the valving chamber (10) between an open position with the valving member (21) disengaged from the valve seat (22), and a closed position with the valving member (21) engaging the valve seat (22). A pair of permanent magnets (45) generate magnetic flux which flows through the outer sleeve (38), the end caps (7, 8) and the armature (11) for alternately magnetically latching the armature (11) in the open position and the closed position. A pair of solenoid coils (50, 51) are located between the inner sleeve (5) and the outer sleeve (38) for shuttling the armature (11) between the respective open and closed position. A fluid accommodating bore (28) extends into the armature (11) and communicates with the fluid inlet (17) for accommodating fluid through the armature (11) to communicating ports (29) in the armature (11). The fluid is delivered through the communicating ports (29) into the valving chamber (10), and in turn through the fluid outlet (18) when the armature (11) is in the open position. <IMAGE></p> |
