| 摘要 |
<p>A magnetic-latching of a two-position valve utilizes a generally toroidal magnetic circuit that is established by spaced inner and outer annular walls (A, B), with an inlet port (10) and an outlet port (11). The inner wall has a gap between axially spaced first and second annular pole faces (17, 18). A single excitation coil (14) is coupled to the magnet circuit at overlap with the inner annular wall on one side of the gap. An armature (25) is supported for axially shuttled displacement in the gap. Fixedly mounted radially polarized means within the outer annular wall completes a magnet circuit to the outer wall. And valve means for on/off control of port-to-port flow is provided by an annular valve seat radially within one of the pole faces, in coaction with a valve member (24) carried by the armature.</p> |
