| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ventilating fan unit for a duct in which workability and maintenance ability can be enhanced by fixing the vicinity of a sucking opening of a fan casing to an outer casing by screws and the screws for fixing the fan casing to the outer casing does not interfere with a spring for fixing a decorative grill to the fan casing. <P>SOLUTION: The ventilating fan unit has the box-like outer casing 20 in which the lower surface is opened, a blower 3 is attached to the top surface, and an exhaust opening is arranged in the side surface, a fan casing 6 in which an upper surface is opened, the sucking opening 7 is arranged in the lower surface, which is introduced into the outer casing 20, in which the blower 3 is housed, a wind channel 8 is formed between the blower 3 and the fan casing, and a discharge opening communicating with the exhaust opening of the outer casing is arranged in the side surface, and the decorative grill 30 secured to the lower surface of the fan casing 6 by the spring 35 and closing the lower surface opening of the outer casing 20, the fan casing 6 is fixed to the outer casing by a plurality of screwing parts arranged around the sucking opening 7 by the screws. <P>COPYRIGHT: (C)2013,JPO&INPIT |
