| 摘要 |
<p>The pump has valves (2b, 10) respectively located in upstream and downstream of an elastic circular membrane (1a). A driving device includes an electromagnet (5) with a movable part that is in contact with the membrane. Analyzing units analyze supply current from the electromagnet, and detect a minimum intensity determined from the supply current to close a gap of the electromagnet at a driving cycle of the pump. An interrupting unit interrupts the current from the electromagnet, when the minimum intensity is reached to ensure autonomy of pumping between 10 to 120 liters.</p> |
