| 主权项 |
1. A device for dispensing an air treatment chemical, the device comprising:
a housing including an inlet for permitting air to enter into an interior space of the housing and including an outlet for permitting air mixed with air treatment chemical to exit the interior space; a substrate positioned within the housing, the substrate bearing the air treatment chemical; a power supply mounted within the housing; a motor mounted within the housing, the motor being powered by the power supply; and an impeller mounted within the housing and connected to the motor, the impeller being capable of moving air from the inlet adjacent the substrate so as to mix the air treatment chemical into the moving air, and then deliver a mixture of air and air treatment chemical through the outlet to outside of the housing, wherein the housing includes a transitional body defining a convergent-divergent channel in which the mixture compresses, at a converging section, toward a throat of the convergent-divergent channel and expands, at a diverging section, away from the throat and through the outlet of the housing. |
