| 摘要 |
PURPOSE:To contrive to enhance heat-exchanging capability, by providing radiating fins on at least one side of blades. CONSTITUTION:An impeller 6 for the heat exchange type blower is provided on the back side of a main body of a dryer, and the radiating fin 15 is located on the cooling air side of each the blades 1. The impeller 6 comprises the blades 1, an inner peripheral plate 4 and an outer peripheral plate 5 which are molded as one body from a resin. On one side of each of the blades 1, the radiating fin 15 is provided in the direction of the eaxis of rotation, the fins 15 being molded from a resin as one body with th impeller 6. Accordingly, by providing the blades 1 with the fins 15, heat-exchanging capability can be greatly enhanced without need to enlarge the heat exchange type blower or increase the rotating speed. |
