| 摘要 |
The invention relates to a duct (5, 14) for feeding air into a room (2, 3), which duct branches off from a main supply duct (4) for supplying a plurality of rooms (2, 3), and/or a duct (8, 17) for conducting air out of a room (2, 3), which duct leads into a main evacuation duct (9) for evacuating a plurality of rooms (2, 3), wherein the duct (5, 8, 14, 17) contains a unit for influencing the flow resistance (7, 11, 16, 19). Said unit is designed in such a way that undesired suctioning of air from the room (2, 3) through the duct (5, 14) for feeding air into the room and/or undesired conducting of air into the room (2, 3) through the duct (8, 17) for conducting air out of the room can be prevented. |
