Ventilation device for automotive vehicles

Claim 1

Air-conditioning system for the passenger compartments of automotive vehicles intended to be connected to two sources of air, one of hot air, the other of fresh air, which comprises a cylindrical box T, an inlet duct 3 for one of the sources of air, which opens laterally from said box T, a shutter 1 controlling said inlet duct 3, another inlet duct 4 for the other source of air which opens coaxially into said box, another shutter 2 controlling said other inlet duct 4, a pair of outlet pipes connected to said box and directed upwards and downwards, respectively, transverse median partitions extending parallel to the box axis and dividing each outlet pipe into two channels B1, B2, and H1, and H2, a blade shutter 5 rotatably mounted in said box and means for moving said blade shutter to any of three stable positions, namely a first position in alignment with said partitions C and two other positions disposed symmetrically on either side of said first position so as to direct each one of the fresh air or warm air streams either towards the two channels of either of said outlet pipes or towards one of the channels of each one of said outlet pipes.