Controllable air mixer unit - has hollow rotatable drum with variable width aperture in its periphery into which at least two separate air streams feed

摘要

The vehicle heating and/or air conditioning system has a controllable mixer unit for at least two air stream (6,7). The mixer unit has a rotatable, hollow cylindrical drum (1) with a variable width aperture (10) formed over a section of the drum periphery. The two air streams (6,7), separated by a partition wall (3,4), are fed to the drum outer periphery. USE/ADVANTAGE - Accurate air mixing in a compact unit for vehicle heating and air conditioning.