Passenger-admission device for use in motor vehicle, has air regulating element exhibiting helix-shaped surface with symmetry axis, where expansion of regulating element along symmetry axis is changeable for regulation of air flow

摘要

The device has an air regulating element (12) arranged in an air duct (10) and exhibiting a helix-shaped surface (16) with a symmetry axis (14), where expansion of the air regulating element along the symmetry axis is changeable for regulation of air flow. The symmetry axis is arranged parallel to longitudinal axis of the air duct, and the air regulating element comprises a fixed end section (18) and a mobile end section (20), where the fixed end section is connected with the air duct. Another air regulating element is arranged coaxially to the former air regulating element.