| 摘要 |
PURPOSE:To obtain a low-cost air supply and exhaust range hood fan for supplying and exhausting the air by one multiblade fan by partitioning a fan casing for containing a double suction type multiblade fan to an exhaust chamber and an air supply chamber provided at positions corresponding to a power transmission plate. CONSTITUTION:A multiblade fan 4 is axially split at a blade group by a power transmission plate 14 longitudinally crossed at a center. A front half part is formed as an exhaust fan section 24, and a rear half part is formed as an air supply fan section 34. The plate 14 is so contained as to be disposed near a partition wall 45. A boss 14a fixed to a center of the plate 14 is coupled from inside of the chamber to a shaft of a motor 6 fixed to a mounting leg 35d protruding from a rear plate 35 of a fan casing 5 via a nut member 14b. The casing 5 is partitioned therein to an exhaust chamber 100 corresponding to an exhaust fan section 24 and an air supply chamber 200 corresponding to an air supply fan section 34 by the plate 14 and the wall 45. |
