| 摘要 |
PROBLEM TO BE SOLVED: To simplify installation of an air inlet and to facilitate cleaning in the air inlet. SOLUTION: The air inlet structure comprises a frame 1 fixed to an air inlet opening to the indoor side, a movable grill 2 being fixed removably to the fixed frame wherein the fixed frame comprises a first frame 11 framing an opening 5 made in a building, and a first short pipe 12 extending into the opening from that frame. The movable grill comprises a second frame 21 touching the first frame tightly, a second short pipe 22 extending from the second frame into the first short pipe to form an air channel, a plurality of blades 24 disposed on the indoor side in the second short pipe and forming a slit for passing air, a filter 25 provided in the second short pipe and filtering air passing through the channel, and a shutter 26 provided in the second short pipe and opening/closing the air channel. |
