| 摘要 |
A system (10) for defogging doors (20) to a display case (22) is described and includes an electric motor (12) and an air moving device (14). The air moving device (14) is operatively coupled to the electric motor (12) and positioned to provide an output proximate to at least one door (20) of the display case (22). The motor (12) is configured to operate at a first speed under standard closed door (20) conditions, at a second speed when the door of the display case (22) is open, and at a third speed for a predetermined length of time after the door (20) is moved from an open position to a closed position.
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