CENTRIFUGAL FAN DEVICE AND AIR CONDITIONING DEVICE

摘要

A centrifugal fan device can be operated by reduced driving power (power consumption) and can discharge a large volume of air. A centrifugal fan device provided with a blade wheel (1) consisting of a main plate (3) and blade plates (2), and also with a side plate (4) having a suction opening and a discharge opening. If the height of the suction opening is H, the height of the discharge opening is h, the diameter of the blade wheel is D, and the diameter of the suction opening is d, the centrifugal fan device satisfies the relationships 0.5 < h/H < 0.8, and 0.78 < d/D < 0.84.