| 摘要 |
PURPOSE:To reduce noise source and to improve ventilation efficiency by providing a multiblade hollow pipe and a ring motor which generate action of suction, pressurization and so on. CONSTITUTION:A multiblade hollow pipe 3 is inserted into a rotating inner ring of a hollow motor 2, and rotating both ends are matched by an aperture matching elbow 4 through a bearing or metal 6 and positions of parts are fixed by an armor 1. And an air duct 7 having a guide groove on the inner face is set at an optional length (opening or height), and airtightness is maintained by a semicircular cap whose one face is opened and which has airtight maintaining guide grooves on both ends, and an airtight band plate is inserted into the inner face of the air duct 7. By sliding this band plate to right and left, a suction port can be changed and slid to an optional position. |
