| 摘要 |
PURPOSE:To improve shutter sealing property, in a simultaneous air intake and exhausting type ventilating device including a centrifugal type multiple blade fan and arc shaped air intake and exhausting casings, by providing a partition between air intake and exhausting ports in a back cover so that it serves as a guide when a shutter is opened and closed. CONSTITUTION:A vertical guide groove 51 is provided at the center of the shutter 21. The partition is provided between the air intake and exhausting ports in the back cover 5, which is made to be a guide wall 52. The guide groove 51 of the shutter 21 is engaged with the guide wall 52 of the back cover 5. When the shutter 21 is slidden up and down and opened and closed in this constitution the guide groove 51 is guided by the guide wall 52 and slide, simultaneously the shutter 21 can separate an air intake and exhausting path. Therefore, the sealing property at the opening and closing of the shutter 21 can be improved. |
