| 摘要 |
PURPOSE:To feed chemical to main flow without disturbing main flow and without causing flow resistance, by a mechanism wherein a chemical feed pipe is opened to the rear side of rotary disk. CONSTITUTION:In a fan, the air outlet C2 is opened to one side of fan housing C3. To supply air into the air outlet C2, an air branch pipe is protruded from a part of vortex route of the fan. To direct air at the air outlet C2, the impeller C4 has vanes 34 on the rotary disk 33 and is supported by the driving shaft C1 in the housing, and the vortex type air route 35 connects to the bent pipe D. Chemical is guided from tank through the chemical feed pipe 36 and the opening 37 into the bent pipe D. Since the chemical feed pipe 36 opens to the rear side of the disk 33, it does not disturb main flow. |
