| 摘要 |
<p>The magnetic actuator for reciprocating motion of a compressor diaphragm, piston or the like. The actuator comprises a stator with stator poles (3a, 3b, 3c), excitation windings (6) and a backing plate (7). Non-magnetic support arms (4a, 4b) carry arced magnet poles (2a, 2b) and actuate a pair of compressed diaphragms (5a, 5b). With the introduction of coil current magnet poles (2a, 2b) are attracted to the central stator pole (3b) and repulsed by outer poles (3a, 3c). A torque about pivot (11) results and hence movement of arms (4a, 4b) with consequential actuation of the diaphragms (5a, 5b). Improves performance by increasing the flux produced by the electromagnet thereby reducing flux leakage and fringing.</p> |
