| 摘要 |
The present invention relates to an air guide (1) for introducing replacement air into a room (6). The air guide (1) comprises at least a first wall (1.1), a second wall (1.2), a first end (1.3), a second end (1.4), an air flow duct (1.5), and a backflow trap (7) placed in the air flow duct (1.5). The air guide (1) further comprises a limiter (8) for restricting the movement of the backflow trap (7), wherein the amount of replacement air flowing through the air flow duct (1.5) is arranged to be adjusted by changing the position of said limiter (8). The invention also relates to a replacement air valve (9) and a window (3). |
