| 摘要 |
PROBLEM TO BE SOLVED: To prevent intake shortage and heat loss from happening by eliminating air leakage from a fan casing even at the time of high pressure.SOLUTION: A ventilation device includes a motor plate 13 provided inside a body 1 and a fan casing (an air supply fan casing 14), and it has a configuration in which a side surface facing an intake port of the air supply fan casing 14 is closed by the motor plate 13. It also has a configuration in which the motor plate 13 has an SA packing 16 attached substantially on the whole area and the air supply fan casing 14 presses an opposite intake port side end part 17 of a scroll plate vertically against the SA packing 16. Thereby, the ventilation device can be acquired which prevents intake shortage and heat loss from happening by eliminating air leakage from the air supply fan casing 14 even at the time of high pressure. |
