| 摘要 |
<p>A solenoid valve comprising an inlet conduit (17) coaxial with an exhaust conduit (19); and an on-off element (21) supported on the anchor (16) of an electromagnet (15) and moving substantially along the common axis of the two conduits (17, 19) for alternately connecting the inlet conduit (17) and the exhaust conduit (19) to an outlet conduit (18) via a connecting compartment (42). The anchor (16) normally closes the inlet conduit (17) via flexible means, such as a permanent magnet (58) in the magnetic circuit of the electromagnet (15), magnetized the opposite way to when the electromagnet (15) is energized. The action of the electromagnet (15) is such as to substantially eliminate that of the magnet (58) on the anchor (16), which is thus set rapidly to the closed position over the exhaust conduit (19). <IMAGE></p> |
