| 摘要 |
The system has housing with an integral recirculation flap (10) for switching from fresh air to recirculated air and a noise reduction arrangement associated with the recirculation flap. The flap has an air throughput opening (10) that can be closed by an auxiliary flap (14) associated with the recirculation flap. The auxiliary flap is mounted on a pivot axle recirculation flap. |
