| 摘要 |
A humidifier includes a water tray with a filter situated to wick water from the water tray. A fan is operable to move ambient air into the humidifier through an inlet, through the filter to humidify the air, and out of the humidifier through an outlet. A control housing contains a humidistat and a controller. The control housing is situated in the humidified air stream and defines an ambient air inlet. The controller is programmed to vary the speed of the fan in response to the difference between the humidity level of the ambient air sensed by the humidistat and a desired humidity. The controller further operates the fan for a predetermined time period after the water tray is emptied.
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