| 摘要 |
<p>An air pump includes an electromagnetic driving mechanism 11, 13, 14, a magnet 17 carried on the tip of an arm 16, and a diaphragm 18 connected to the intermediate portion of the arm, the magnet 17 being reciprocated by electromagnetic action exerted between the electromagnetic driving mechanism 11, 13, 14 and the magnet 17, the intake and discharge action being effected by the expansion and contraction of the diaphragm 18. In order to provide an air controller capable of simply regulating the air delivery rate of the pump, the electromagnetic driving mechanism 11, 13, 14 is mounted on a housing 12 such that it is capable of advancing and retracting with respect to the magnet 17, whereby the advance and retraction of the electromagnetic driving mechanism 11, 13, 14 will cause the distance between the core 13 and magnet 17 and hence the reciprocating rate of the magnet to change, thus changing the air delivery rate. <IMAGE></p> |
