| 摘要 |
According to one embodiment, a liquid quantity sensing device comprises a sensor body, a first electrode, a plurality of second electrodes and a sensing mechanism. The sensor body extends toward an interior of a container and includes electrically conductive material. The first electrode is disposed on the sensor body while the plurality of second electrodes are disposed on the sensor body and are separated from each other in a movement direction of a liquid level that changes according to a quantity of the liquid. The sensing mechanism senses conduction states between the respective second electrodes and the first electrode. At least one of the first electrode and an uppermost electrode of the second electrodes is separated from the upper wall by a distance larger than a maximum thickness of a liquid drop that adheres to the upper wall.
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