| 摘要 |
A humidifier including a base defining a liquid reservoir; an electrically energized humidification device adapted to induce dispersion of liquid retained by the reservoir; a power supply for supplying electrical current to the humidification device; a control circuit connecting the power supply to the humidification device and including a switch operable in an active state to produce energizing current flow between the power supply and the humidification device and operable in an inactive state to prevent energizing current flow therebetween; and a sensing mechanism operatively coupled to the switch and adapted to sense the liquid level in the reservoir, the sensing mechanism adapted to provide the active state for the switch in response to a minimum liquid level in the reservoir and to provide the inactive state for the switch in response to a liquid level in the less than the minimum liquid level. Also included is a delay for delaying the energizing current flow between the power supply and the humidification device for a given period after the level of liquid in the reservoir reaches the minimum liquid level. The provision of a delay prevents the premature flow of current to the humidification device.
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