| 摘要 |
PROBLEM TO BE SOLVED: To perform a ventilation, a drying and a cool air feeding by normally and reversely rotating one normal-reverse motor, and prevent a large noise from generating during ventilation. SOLUTION: By rotating an impeller of a sirocco fan 3 for ventilation and an impeller 11 of a sirocco fan 4 for circulation by a normal-reverse motor, a ventilation, a drying and a cool air feeding are performed. Then, one end part 13a of an output shaft 13 of the normal-reverse motor 2 is fixed to the impeller 11 of the sirocco fan 3 for ventilation, and the other end part 13b of the output shaft 13 is connected to the impeller 11 of the sirocco fan 4 for circulation by one directional clutch 30 to prevent the impeller 11 from rotating during ventilation. |
