| 摘要 |
<p>A water pump with double liquid level sensors includes a water pump body (30), a control module (20), a first capacitive liquid level sensor (11) and a second capacitive liquid level sensor (12) that are electrically connected with the control module (20). The two liquid level sensors are provided in a liquid containing space where the liquid level requires controlling. The lowest horizontal plane in the liquid containing space where the liquid level requires controlling is used as a reference plane. The distance between the first capacitive liquid level sensor (11) and the reference plane is shorter than the distance between the second capacitive liquid level sensor (12) and the reference plane. Said water pump solves the problem of frequent starting and stopping caused by the liquid reflux when the water pump body (30) is closed. Further, the water pump can be turned off in time, thus saving electricity and prolonging service life of the pump.</p> |
