Damper with multiple shutters, in particular for an air conditioning system for motor vehicles

摘要

The damper has a frame carrying a number of pivoting flaps (22) rotating about parallel axes. This rotation is controlled by a common drive mechanism which varies the position of the flaps between maximum and zero flow positions. In the maximum flow condition, the flaps have a minimum inclination to the air flow direction passing through the register and in the zero flow position they have a maximum inclination to this direction. The drive mechanism controls pivoting of the register flaps so that they each pivot through the same angle but in the opposite direction to that of the following flap. The frame carries a number of intermediate partitions whose length extends parallel to the flaps' axis and width extends in the air flow direction. The thickness and position of these partitions is such that the free edge of the flaps in the zero flow position is in contact with the adjacent partition.